v3.26.1
Shareholders' equity (Details)
6 Months Ended
Mar. 31, 2026
USD ($)
$ / shares
shares
Investors Warrants [Member]  
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Number of shares exercisable* | shares 172,069
Exercise price* $ 7.5
Stock price* $ 9.8
Expected years 5
Risk-free interest rate 3.69%
Expected volatility 98.15%
Fair value | $ $ 1,323,369
Placement Warrants [Member]  
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Number of shares exercisable* | shares 8,603
Exercise price* $ 25
Stock price* $ 9.8
Expected years 3
Risk-free interest rate 3.58%
Expected volatility 98.15%
Fair value | $ $ 36,568