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    <element id="ATOM_ResearchAndDevelopmentMember" name="ResearchAndDevelopmentMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="ATOM_GeneralAndAdministrativeMember" name="GeneralAndAdministrativeMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="ATOM_SellingAndMarketingMember" name="SellingAndMarketingMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="ATOM_TimeBasedUnitsMember" name="TimeBasedUnitsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="ATOM_PerformanceBasedUnitsMember" name="PerformanceBasedUnitsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="ATOM_RobertMearsMember" name="RobertMearsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="ATOM_RobertMears1Member" name="RobertMears1Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="ATOM_AccretionIncome" name="AccretionIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="ATOM_StockIssuedDuringPeriodValueNewIssues1" name="StockIssuedDuringPeriodValueNewIssues1" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="ATOM_StockIssuedDuringPeriodSharesNewIssues1" name="StockIssuedDuringPeriodSharesNewIssues1" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="ATOM_ProceedsFromRegisteredDirectOffering" name="ProceedsFromRegisteredDirectOffering" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="ATOM_DisclosureLeasesAbstract" name="DisclosureLeasesAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="ATOM_LesseeOperatingAndFinanceLeasesTextBlock" name="LesseeOperatingAndFinanceLeasesTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="ATOM_SignificantAccountingPoliciesPolicyTextBlock" name="SignificantAccountingPoliciesPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="ATOM_RecentAccountingStandardsPolicyTextBlock" name="RecentAccountingStandardsPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="ATOM_WorkingCapital" name="WorkingCapital" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="ATOM_SaleOfStockPricePerShare1" name="SaleOfStockPricePerShare1" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="ATOM_PurchasePrice" name="PurchasePrice" nillable="true" xbrli:periodType="instant" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="ATOM_OperatingLeaseCostAbstract" name="OperatingLeaseCostAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="ATOM_FixedLeaseCosts" name="FixedLeaseCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="ATOM_StockpriceHurdles" name="StockpriceHurdles" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="ATOM_ToolRelatedExpenses" name="ToolRelatedExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="ATOM_IntellectualPropertyRelatedExpenses" name="IntellectualPropertyRelatedExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
</schema>
