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  <xs:element name="AdjustmentsToReconcileNetLossToNetCashUsedInOperatingActivitiesAbstract2" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_AdjustmentsToReconcileNetLossToNetCashUsedInOperatingActivitiesAbstract2"/>
  <xs:element name="IssuedPatentsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_IssuedPatentsAbstract"/>
  <xs:element name="IssuedPatentsAbstract0" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_IssuedPatentsAbstract0"/>
  <xs:element name="DerivativeLiabilitiesAbstract0" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_DerivativeLiabilitiesAbstract0"/>
  <xs:element name="ExciseTaxPayableCurrent" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_ExciseTaxPayableCurrent"/>
  <xs:element name="AdjustmentstoAdditionalPaidinCapitalContributionsFromRelatedParty" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_AdjustmentstoAdditionalPaidinCapitalContributionsFromRelatedParty"/>
  <xs:element name="StockIssuedDuringPeriodValueIssuanceOfCommonStockUponConsummationOfTheMerger" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_StockIssuedDuringPeriodValueIssuanceOfCommonStockUponConsummationOfTheMerger"/>
  <xs:element name="StockIssuedDuringPeriodSharesIssuanceOfCommonStockUponConsummationOfTheMerger" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_StockIssuedDuringPeriodSharesIssuanceOfCommonStockUponConsummationOfTheMerger"/>
  <xs:element name="StockIssuedDuringPeriodValueStockSubscriptionReceivable" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_StockIssuedDuringPeriodValueStockSubscriptionReceivable"/>
  <xs:element name="StockIssuedDuringPeriodValueEarnoutArrangement" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_StockIssuedDuringPeriodValueEarnoutArrangement"/>
  <xs:element name="StockIssuedDuringPeriodSharesEarnoutArrangementinShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_StockIssuedDuringPeriodSharesEarnoutArrangementinShares"/>
  <xs:element name="StockIssuedDuringPeriodValueContingentConsideration" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_StockIssuedDuringPeriodValueContingentConsideration"/>
  <xs:element name="StockIssuedDuringPeriodValuePrivatePlacement" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_StockIssuedDuringPeriodValuePrivatePlacement"/>
  <xs:element name="StockIssuedDuringPeriodSharesPrivatePlacement" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_StockIssuedDuringPeriodSharesPrivatePlacement"/>
  <xs:element name="StockIssuedDuringPeriodValueExerciseOfSeriesAWarrants" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_StockIssuedDuringPeriodValueExerciseOfSeriesAWarrants"/>
  <xs:element name="StockIssuedDuringPeriodSharesIssuedExerciseOfSeriesAWarrants" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_StockIssuedDuringPeriodSharesIssuedExerciseOfSeriesAWarrants"/>
  <xs:element name="StockIssuedDuringPeriodSharesReverseStockSplit" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_StockIssuedDuringPeriodSharesReverseStockSplit"/>
  <xs:element name="StockIssuedDuringPeriodSharesIssuedFromWarrantConversioninShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_StockIssuedDuringPeriodSharesIssuedFromWarrantConversioninShares"/>
  <xs:element name="IssuancesOfCommonStockForForwardPurchaseAgreement" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_IssuancesOfCommonStockForForwardPurchaseAgreement"/>
  <xs:element name="IssuancesOfCommonStockForForwardPurchaseAgreementinShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_IssuancesOfCommonStockForForwardPurchaseAgreementinShares"/>
  <xs:element name="IssuanceOfCommonStockForForwardPurchaseAgreementCompensation" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_IssuanceOfCommonStockForForwardPurchaseAgreementCompensation"/>
  <xs:element name="IssuanceOfCommonStockForForwardPurchaseAgreementCompensationinShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_IssuanceOfCommonStockForForwardPurchaseAgreementCompensationinShares"/>
  <xs:element name="StockIssuedDuringPeriodValueForwardPurchaseAgreementSubscriptionReceivableDiscount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_StockIssuedDuringPeriodValueForwardPurchaseAgreementSubscriptionReceivableDiscount"/>
  <xs:element name="StockIssuedDuringPeriodValueStockbasedCompensationToConsultant" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_StockIssuedDuringPeriodValueStockbasedCompensationToConsultant"/>
  <xs:element name="StockIssuedDuringPeriodValueSharesIssuedToConsultant" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_StockIssuedDuringPeriodValueSharesIssuedToConsultant"/>
  <xs:element name="StockIssuedDuringPeriodValueDiscountonShortTermNotesPayable" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_StockIssuedDuringPeriodValueDiscountonShortTermNotesPayable"/>
  <xs:element name="NoncashGainRelatedToCorrectionOfNotePayableBalance" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_NoncashGainRelatedToCorrectionOfNotePayableBalance"/>
  <xs:element name="LossOnIssuanceOfFPAAdditionalShares" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="sti_LossOnIssuanceOfFPAAdditionalShares"/>
  <xs:element name="IncreaseDecreaseInExciseTaxes" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="sti_IncreaseDecreaseInExciseTaxes"/>
  <xs:element name="IncreaseDecreaseInDeferredOfferingCost" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_IncreaseDecreaseInDeferredOfferingCost"/>
  <xs:element name="CashReceivedFromNUBITrust" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="sti_CashReceivedFromNUBITrust"/>
  <xs:element name="DiscountPaymentRelatedToNonRedemptionAgreement" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_DiscountPaymentRelatedToNonRedemptionAgreement"/>
  <xs:element name="PaymentForReimbursementOfConsiderationSharesRelatedToTheForwardPurchaseAgreementPayment" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_PaymentForReimbursementOfConsiderationSharesRelatedToTheForwardPurchaseAgreementPayment"/>
  <xs:element name="PaymentofReimbursementOfRecycledSharesRelatedToForwardPurchaseAgreement" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_PaymentofReimbursementOfRecycledSharesRelatedToForwardPurchaseAgreement"/>
  <xs:element name="TransactionExpensesInConnectionWithTheMerger" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_TransactionExpensesInConnectionWithTheMerger"/>
  <xs:element name="ProceedsFromInflowFromMerger" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="sti_ProceedsFromInflowFromMerger"/>
  <xs:element name="CashUsedToSettleFractionalShares" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_CashUsedToSettleFractionalShares"/>
  <xs:element name="IssuanceOfCommonStockForForwardPurchaseAgreement" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_IssuanceOfCommonStockForForwardPurchaseAgreement"/>
  <xs:element name="StockSubscriptionReceivableNetOfDiscount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="sti_StockSubscriptionReceivableNetOfDiscount"/>
  <xs:element name="FPADiscountAccretion" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_FPADiscountAccretion"/>
  <xs:element name="ReclassificationOfWarrantDerivativeLiabilityToAdditionalPaidinCapitalUponExerciseOfSeries" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="sti_ReclassificationOfWarrantDerivativeLiabilityToAdditionalPaidinCapitalUponExerciseOfSeries"/>
  <xs:element name="ConversionOfSeriesCAndSeriesDWarrantDerivativeLiabilitiesIntoCommonStock" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="sti_ConversionOfSeriesCAndSeriesDWarrantDerivativeLiabilitiesIntoCommonStock"/>
  <xs:element name="ReverseStockSplitReclassificationFromCommonStockToAdditionalPaidinCapital" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_ReverseStockSplitReclassificationFromCommonStockToAdditionalPaidinCapital"/>
  <xs:element name="SharesIssuableUponSettlementOfWarrants" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="sti_SharesIssuableUponSettlementOfWarrants"/>
  <xs:element name="DebtDiscountRecognizedOnNotePayable" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="sti_DebtDiscountRecognizedOnNotePayable"/>
  <xs:element name="RecapitalizationTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_RecapitalizationTextBlock"/>
  <xs:element name="WarrantsTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_WarrantsTextBlock"/>
  <xs:element name="ForwardPurchaseAgreementNonRedemptionAgreementAndPrivatePlacementFinancingTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_ForwardPurchaseAgreementNonRedemptionAgreementAndPrivatePlacementFinancingTextBlock"/>
  <xs:element name="EmergingGrowthCompanyPolicyTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_EmergingGrowthCompanyPolicyTextBlock"/>
  <xs:element name="PatentsPolicyTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_PatentsPolicyTextBlock"/>
  <xs:element name="EquityLinkedInstrumentsPolicyTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_EquityLinkedInstrumentsPolicyTextBlock"/>
  <xs:element name="WarrantsPolicyTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_WarrantsPolicyTextBlock"/>
  <xs:element name="ForwardPurchaseAgreementAndNonRedemptionAgreementPolicyTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_ForwardPurchaseAgreementAndNonRedemptionAgreementPolicyTextBlock"/>
  <xs:element name="ReverseStockSplitPolicyTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_ReverseStockSplitPolicyTextBlock"/>
  <xs:element name="OtherCurrentAssetsPolicyTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_OtherCurrentAssetsPolicyTextBlock"/>
  <xs:element name="ScheduleOfPropertyAndEquipmentEstimatedUsefulLivesTableTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_ScheduleOfPropertyAndEquipmentEstimatedUsefulLivesTableTextBlock"/>
  <xs:element name="ScheduleOfElementsOfMergerTableTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_ScheduleOfElementsOfMergerTableTextBlock"/>
  <xs:element name="ScheduleOfFairValueAssumptionsOfWarrantsTableTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_ScheduleOfFairValueAssumptionsOfWarrantsTableTextBlock"/>
  <xs:element name="LossOnIssuanceOfFPAAdditionalShare" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="sti_LossOnIssuanceOfFPAAdditionalShare"/>
  <xs:element name="InterestIncome" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_InterestIncome"/>
  <xs:element name="DilutedNetIncomeloss" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_DilutedNetIncomeloss"/>
  <xs:element name="CorrectionofErrorsinPreviouslyReportedConsolidatedFinancialStatementsScheduleofPreviouslyReportedCondensedConsolidatedandCombinedStatementofChangesinStockholdersDeficitEquityDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="sti_CorrectionofErrorsinPreviouslyReportedConsolidatedFinancialStatementsScheduleofPreviouslyReportedCondensedConsolidatedandCombinedStatementofChangesinStockholdersDeficitEquityDetailsTable"/>
  <xs:element name="CorrectionofErrorsinPreviouslyReportedConsolidatedFinancialStatementsScheduleofPreviouslyReportedCondensedConsolidatedandCombinedStatementofChangesinStockholdersDeficitEquityDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_CorrectionofErrorsinPreviouslyReportedConsolidatedFinancialStatementsScheduleofPreviouslyReportedCondensedConsolidatedandCombinedStatementofChangesinStockholdersDeficitEquityDetailsLineItems"/>
  <xs:element name="StockIssuedDuringPeriodValueSharesIssuedFromExerciseOfSeriesBWarrants" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_StockIssuedDuringPeriodValueSharesIssuedFromExerciseOfSeriesBWarrants"/>
  <xs:element name="IssuanceOfCommonStockForForwardPurchaseAgreements" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_IssuanceOfCommonStockForForwardPurchaseAgreements"/>
  <xs:element name="ForwardPurchaseAgreementSubscriptionReceivableDiscount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_ForwardPurchaseAgreementSubscriptionReceivableDiscount"/>
  <xs:element name="FairValueAdjustmentOfDerivativeLiabilities" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="sti_FairValueAdjustmentOfDerivativeLiabilities"/>
  <xs:element name="CapitalizedInterestToPrincipalBalanceOfShorttermNotePayable" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_CapitalizedInterestToPrincipalBalanceOfShorttermNotePayable"/>
  <xs:element name="CorrectionOfPriorperiodErrorFPASubscriptionReceivableDiscount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_CorrectionOfPriorperiodErrorFPASubscriptionReceivableDiscount"/>
  <xs:element name="SummaryofSignificantAccountingPoliciesScheduleofPropertyandEquipmentEstimatedUsefulLivesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="sti_SummaryofSignificantAccountingPoliciesScheduleofPropertyandEquipmentEstimatedUsefulLivesDetailsTable"/>
  <xs:element name="FiniteLivedIntangibleAssetsIssuedPatentsNet" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="sti_FiniteLivedIntangibleAssetsIssuedPatentsNet"/>
  <xs:element name="FiniteLivedIntangibleAssetsPatentsPendingnotAmortized" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="sti_FiniteLivedIntangibleAssetsPatentsPendingnotAmortized"/>
  <xs:element name="RecapitalizationScheduleofElementsofMergerDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="sti_RecapitalizationScheduleofElementsofMergerDetailsTable"/>
  <xs:element name="PaymentForReimbursementOfRecycledSharesRelatedToForwardPurchaseAgreement" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_PaymentForReimbursementOfRecycledSharesRelatedToForwardPurchaseAgreement"/>
  <xs:element name="CashFromNUBIOperatingAccount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="sti_CashFromNUBIOperatingAccount"/>
  <xs:element name="PrepaidExpensesofReverseRecapitalization" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="sti_PrepaidExpensesofReverseRecapitalization"/>
  <xs:element name="DerivativeLiabilitiesReverseCapitalization" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_DerivativeLiabilitiesReverseCapitalization"/>
  <xs:element name="OtherLiabilitiesReverseRecapitalization" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_OtherLiabilitiesReverseRecapitalization"/>
  <xs:element name="ReverseRecapitalizationNet" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_ReverseRecapitalizationNet"/>
  <xs:element name="RecapitalizationScheduleofNumberofPredecessorHBCSharesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="sti_RecapitalizationScheduleofNumberofPredecessorHBCSharesDetailsTable"/>
  <xs:element name="AmountOfWarrantsAndIssuanceOfCommonStock" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="sti_AmountOfWarrantsAndIssuanceOfCommonStock"/>
  <xs:element name="PercentageOfWarrantsAndIssuanceOfCommonStock" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_PercentageOfWarrantsAndIssuanceOfCommonStock"/>
  <xs:element name="PercentageOfAdjustmentToDeferredTaxAssets" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_PercentageOfAdjustmentToDeferredTaxAssets"/>
  <xs:element name="UnrecognizedTaxBenefitsAdditionsResultingfromCurrentPeriodTaxPositions" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_UnrecognizedTaxBenefitsAdditionsResultingfromCurrentPeriodTaxPositions"/>
  <xs:element name="UnrecognizedTaxBenefitsPaymentsResultingFromCurrentPeriodTaxPositionsionsRelatedToPriorYears" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_UnrecognizedTaxBenefitsPaymentsResultingFromCurrentPeriodTaxPositionsionsRelatedToPriorYears"/>
  <xs:element name="UnrecognizedTaxBenefitsAdditionResultingFromCurrentPeriodTaxPositionsnsBasedOnTaxPositionsRelatedToCurrentYear" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_UnrecognizedTaxBenefitsAdditionResultingFromCurrentPeriodTaxPositionsnsBasedOnTaxPositionsRelatedToCurrentYear"/>
  <xs:element name="StockBasedCompensationScheduleofRSUActivityDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="sti_StockBasedCompensationScheduleofRSUActivityDetailsTable"/>
  <xs:element name="StockBasedCompensationScheduleofRSUActivityDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_StockBasedCompensationScheduleofRSUActivityDetailsLineItems"/>
  <xs:element name="StockBasedCompensationScheduleofAwardswithMarketBasedConditionsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="sti_StockBasedCompensationScheduleofAwardswithMarketBasedConditionsDetailsTable"/>
  <xs:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledInPeriodWeightedAverageGrantDateFairValue" type="dtr:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledInPeriodWeightedAverageGrantDateFairValue"/>
  <xs:element name="FairValueMeasurementsScheduleofCompanysLiabilitiesthatareMeasuredatFairValueDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="sti_FairValueMeasurementsScheduleofCompanysLiabilitiesthatareMeasuredatFairValueDetailsTable"/>
  <xs:element name="FairValueMeasurementsScheduleofDeterminetheFairValueDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="sti_FairValueMeasurementsScheduleofDeterminetheFairValueDetailsTable"/>
  <xs:element name="FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationInitialMeasurement" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationInitialMeasurement"/>
  <xs:element name="AntidilutiveSecuritiesIncludedFromComputationOfEarningsPerShareAmount" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_AntidilutiveSecuritiesIncludedFromComputationOfEarningsPerShareAmount"/>
  <xs:element name="DescriptionofOrganizationBusinessOperationsandGoingConcernDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="sti_DescriptionofOrganizationBusinessOperationsandGoingConcernDetailsTable"/>
  <xs:element name="AdditionalIssuanceOfCommonStock" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_AdditionalIssuanceOfCommonStock"/>
  <xs:element name="MergerAgreementDescription" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_MergerAgreementDescription"/>
  <xs:element name="BidPriceOfPerShare" type="dtr:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_BidPriceOfPerShare"/>
  <xs:element name="CorrectionofErrorsinPreviouslyReportedConsolidatedFinancialStatementsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="sti_CorrectionofErrorsinPreviouslyReportedConsolidatedFinancialStatementsDetailsTable"/>
  <xs:element name="IssuanceOfFairValueShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_IssuanceOfFairValueShares"/>
  <xs:element name="StockholdersEquityNoteSubscriptionReceivable" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="sti_StockholdersEquityNoteSubscriptionReceivable"/>
  <xs:element name="SubscriptionReceivableDiscount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_SubscriptionReceivableDiscount"/>
  <xs:element name="SummaryofSignificantAccountingPoliciesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="sti_SummaryofSignificantAccountingPoliciesDetailsTable"/>
  <xs:element name="NetUnissuedPatents" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="sti_NetUnissuedPatents"/>
  <xs:element name="PercentageOfNumberOfStocksOfCommonStockOutstanding" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_PercentageOfNumberOfStocksOfCommonStockOutstanding"/>
  <xs:element name="CommonStockGrantedShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_CommonStockGrantedShares"/>
  <xs:element name="CommonStockSharesCancelled" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_CommonStockSharesCancelled"/>
  <xs:element name="IssuanceShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_IssuanceShares"/>
  <xs:element name="RecapitalizationDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="sti_RecapitalizationDetailsTable"/>
  <xs:element name="NetProceedsFromTransactionCost" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="sti_NetProceedsFromTransactionCost"/>
  <xs:element name="EarnoutMeasurementInputs" type="xbrli:decimalItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="sti_EarnoutMeasurementInputs"/>
  <xs:element name="RelatedPartiesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="sti_RelatedPartiesDetailsTable"/>
  <xs:element name="TransactionCosts" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="sti_TransactionCosts"/>
  <xs:element name="ServicesOrEmployeeCostsOwed" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_ServicesOrEmployeeCostsOwed"/>
  <xs:element name="CashForWorkingCapital" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_CashForWorkingCapital"/>
  <xs:element name="CommitmentsandContingenciesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="sti_CommitmentsandContingenciesDetailsTable"/>
  <xs:element name="UnpaidFederalIncomeTaxBalanceOwed" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_UnpaidFederalIncomeTaxBalanceOwed"/>
  <xs:element name="StockholdersEquityDeficitDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="sti_StockholdersEquityDeficitDetailsTable"/>
  <xs:element name="IssuanceOfPrivatePlacementCommonStock" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="sti_IssuanceOfPrivatePlacementCommonStock"/>
  <xs:element name="UnitsIssuedDuringPeriodSharesPrefundUnits" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_UnitsIssuedDuringPeriodSharesPrefundUnits"/>
  <xs:element name="PrefundPurchasePrice" type="dtr:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_PrefundPurchasePrice"/>
  <xs:element name="NumberOfUnitIssuedInTransaction" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_NumberOfUnitIssuedInTransaction"/>
  <xs:element name="NumberOfUnitIssuedPricePerShare" type="dtr:perShareItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="sti_NumberOfUnitIssuedPricePerShare"/>
  <xs:element name="WarrantsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="sti_WarrantsDetailsTable"/>
  <xs:element name="NumberOfPurchasedCommonStock" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_NumberOfPurchasedCommonStock"/>
  <xs:element name="ClassOfWarrantOrRightRedemptionPriceOfWarrantsOrRights" type="dtr:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_ClassOfWarrantOrRightRedemptionPriceOfWarrantsOrRights"/>
  <xs:element name="WarrantsPriorNoticePeriodDays" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_WarrantsPriorNoticePeriodDays"/>
  <xs:element name="ClassOfWarrantOrRightRedemptionOfWarrantsOrRightsStockPriceTrigger" type="dtr:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_ClassOfWarrantOrRightRedemptionOfWarrantsOrRightsStockPriceTrigger"/>
  <xs:element name="ClassOfWarrantOrRightRedemptionOfWarrantsOrRightsThresholdConsecutiveTradingDays" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_ClassOfWarrantOrRightRedemptionOfWarrantsOrRightsThresholdConsecutiveTradingDays"/>
  <xs:element name="NumberOfTradingDays" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_NumberOfTradingDays"/>
  <xs:element name="ClassOfWarrantsSharesExercised" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="sti_ClassOfWarrantsSharesExercised"/>
  <xs:element name="FairValueAdjustmentOfWarrant" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="sti_FairValueAdjustmentOfWarrant"/>
  <xs:element name="FairValueOfDerivativeLiabilitiesWarrantsShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_FairValueOfDerivativeLiabilitiesWarrantsShares"/>
  <xs:element name="WarrantsRemainedOutstanding" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="sti_WarrantsRemainedOutstanding"/>
  <xs:element name="NumberOfRatioWarrantsShare" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_NumberOfRatioWarrantsShare"/>
  <xs:element name="CommonStockIssuedUponExerciseOfWarrant" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="sti_CommonStockIssuedUponExerciseOfWarrant"/>
  <xs:element name="FairValueWarrantsExercised" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_FairValueWarrantsExercised"/>
  <xs:element name="ForwardPurchaseAgreementNonRedemptionAgreementandPrivatePlacementFinancingDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="sti_ForwardPurchaseAgreementNonRedemptionAgreementandPrivatePlacementFinancingDetailsTable"/>
  <xs:element name="SharesOutstandingPercentage" type="dtr:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="sti_SharesOutstandingPercentage"/>
  <xs:element name="PrepaymentShortfallForPurchaseAgreement" type="dtr:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="sti_PrepaymentShortfallForPurchaseAgreement"/>
  <xs:element name="PurchaseOfInitialPrice" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_PurchaseOfInitialPrice"/>
  <xs:element name="CashPayment" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_CashPayment"/>
  <xs:element name="ReimbursementConsiderationShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="sti_ReimbursementConsiderationShares"/>
  <xs:element name="AccretedDiscountAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_AccretedDiscountAmount"/>
  <xs:element name="RecycledSharesRelatedToTheFPA" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_RecycledSharesRelatedToTheFPA"/>
  <xs:element name="PercentageOfPrepaymentShortfall" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_PercentageOfPrepaymentShortfall"/>
  <xs:element name="PercentageOfMeteoraShares" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_PercentageOfMeteoraShares"/>
  <xs:element name="NumberOfConsiderationShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_NumberOfConsiderationShares"/>
  <xs:element name="IssuedAndOutstandingSharesPercentage" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_IssuedAndOutstandingSharesPercentage"/>
  <xs:element name="BackstopShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_BackstopShares"/>
  <xs:element name="DebtDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="sti_DebtDetailsTable"/>
  <xs:element name="ConvertibleNoteSharesOfRemainedOutstanding" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="sti_ConvertibleNoteSharesOfRemainedOutstanding"/>
  <xs:element name="OutstandingBalance" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="sti_OutstandingBalance"/>
  <xs:element name="StockBasedCompensationDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="sti_StockBasedCompensationDetailsTable"/>
  <xs:element name="UnrestrictedCommonShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_UnrestrictedCommonShares"/>
  <xs:element name="PercentageOfCashBonus" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_PercentageOfCashBonus"/>
  <xs:element name="FairValueMeasurementsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="sti_FairValueMeasurementsDetailsTable"/>
  <xs:element name="SubsequentEventsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="sti_SubsequentEventsDetailsTable"/>
  <xs:element name="PercentageOfCommonStockTradingVolume" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_PercentageOfCommonStockTradingVolume"/>
  <xs:element name="AnsonInvestmentsMasterFundLPAnsonMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_AnsonInvestmentsMasterFundLPAnsonMember"/>
  <xs:element name="AsRestatedMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_AsRestatedMember"/>
  <xs:element name="AwardsWithMarketBasedConditionsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_AwardsWithMarketBasedConditionsMember"/>
  <xs:element name="BackstopInvestorMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_BackstopInvestorMember"/>
  <xs:element name="BeneschFriedlanderCoplanAronoffLLPMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_BeneschFriedlanderCoplanAronoffLLPMember"/>
  <xs:element name="ConsultantsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_ConsultantsMember"/>
  <xs:element name="ConvertibleNotesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_ConvertibleNotesMember"/>
  <xs:element name="EFHuttonMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_EFHuttonMember"/>
  <xs:element name="EquityIncentivePlanMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_EquityIncentivePlanMember"/>
  <xs:element name="FPAAmendmentAndResolutionOfLawsuitMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_FPAAmendmentAndResolutionOfLawsuitMember"/>
  <xs:element name="FPAShareMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_FPAShareMember"/>
  <xs:element name="ForwardPurchaseAgreementMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_ForwardPurchaseAgreementMember"/>
  <xs:element name="G3HoldbackSharesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_G3HoldbackSharesMember"/>
  <xs:element name="GlobalGrapheneGroupMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_GlobalGrapheneGroupMember"/>
  <xs:element name="GreatPointCapitalLLCMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_GreatPointCapitalLLCMember"/>
  <xs:element name="HBCEarnoutArrangementMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_HBCEarnoutArrangementMember"/>
  <xs:element name="HBCEarnoutSharesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_HBCEarnoutSharesMember"/>
  <xs:element name="HBCHoldbackSharesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_HBCHoldbackSharesMember"/>
  <xs:element name="HBCShareholdersMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_HBCShareholdersMember"/>
  <xs:element name="IPOWarrantsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_IPOWarrantsMember"/>
  <xs:element name="MachFMMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_MachFMMember"/>
  <xs:element name="MadisonBondMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_MadisonBondMember"/>
  <xs:element name="MarchPrivatePlacementMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_MarchPrivatePlacementMember"/>
  <xs:element name="MergerAgreementMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_MergerAgreementMember"/>
  <xs:element name="MergerMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_MergerMember"/>
  <xs:element name="MeteoraSharesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_MeteoraSharesMember"/>
  <xs:element name="MonteCarloMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_MonteCarloMember"/>
  <xs:element name="NUBISharesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_NUBISharesMember"/>
  <xs:element name="NonRedemptionAgreementMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_NonRedemptionAgreementMember"/>
  <xs:element name="NotesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_NotesMember"/>
  <xs:element name="NubiaCommonStockMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_NubiaCommonStockMember"/>
  <xs:element name="NubiaConvertibleNoteholdersMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_NubiaConvertibleNoteholdersMember"/>
  <xs:element name="PredecessorHBCSharesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_PredecessorHBCSharesMember"/>
  <xs:element name="PrivatePlacementWarrantsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_PrivatePlacementWarrantsMember"/>
  <xs:element name="PrivateWarrantsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_PrivateWarrantsMember"/>
  <xs:element name="PromissoryNoteMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_PromissoryNoteMember"/>
  <xs:element name="RestatedMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_RestatedMember"/>
  <xs:element name="RetroactiveApplicationOfRecapitalizationMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_RetroactiveApplicationOfRecapitalizationMember"/>
  <xs:element name="RetroactiveApplicationOfRecapitalizationsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_RetroactiveApplicationOfRecapitalizationsMember"/>
  <xs:element name="ReverseStockSplitMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_ReverseStockSplitMember"/>
  <xs:element name="SeriesAAndBWarrantsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_SeriesAAndBWarrantsMember"/>
  <xs:element name="SeriesAWarrantsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_SeriesAWarrantsMember"/>
  <xs:element name="SeriesBWarrantsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_SeriesBWarrantsMember"/>
  <xs:element name="SeriesCAndDWarrantsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_SeriesCAndDWarrantsMember"/>
  <xs:element name="SeriesCWarrantsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_SeriesCWarrantsMember"/>
  <xs:element name="SeriesDWarrantsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_SeriesDWarrantsMember"/>
  <xs:element name="SharedServicesAgreementMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_SharedServicesAgreementMember"/>
  <xs:element name="SharesIssuedToShareholdersOfPredecessorHBCMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_SharesIssuedToShareholdersOfPredecessorHBCMember"/>
  <xs:element name="StockBasedCompensationEquityAwardsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_StockBasedCompensationEquityAwardsMember"/>
  <xs:element name="StockSubscriptionReceivableMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_StockSubscriptionReceivableMember"/>
  <xs:element name="StockbasedCompensationWarrantsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_StockbasedCompensationWarrantsMember"/>
  <xs:element name="TaxLienMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_TaxLienMember"/>
  <xs:element name="TerminationAgreementMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_TerminationAgreementMember"/>
  <xs:element name="UnrestrictedCommonStockAwardsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_UnrestrictedCommonStockAwardsMember"/>
  <xs:element name="WarrantsPrivateMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_WarrantsPrivateMember"/>
  <xs:element name="WarrantsPublicMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_WarrantsPublicMember"/>
  <xs:element name="WarrantsSeriesAAndBMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_WarrantsSeriesAAndBMember"/>
  <xs:element name="WarrantsSeriesAMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_WarrantsSeriesAMember"/>
  <xs:element name="WarrantsSeriesCAndDMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_WarrantsSeriesCAndDMember"/>
  <xs:element name="WarrantsSeriesCMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_WarrantsSeriesCMember"/>
  <xs:element name="WarrantsSeriesDMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_WarrantsSeriesDMember"/>
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  <xs:element name="DocumentAndEntityInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sti_DocumentAndEntityInformationAbstract"/>
</xs:schema>
