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Statements of Cash Flows - USD ($)
 12 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Operating activities    
Net loss $ (12,318,110) $ (11,859,491)
Adjustments to reconcile net loss to net cash used in operating activities:    
Amortization and depreciation 246,791 199,266
Amortization of deferred issuance costs 101,329
Stock-based compensation 1,344,476 1,105,457
Fair value change in warrant liability 327,092
Private placement warrant issuance costs reclassed to financing activities 127,659
Loss on disposal of fixed assets 32,143
Amortization of discounts and premiums on short-term investments (45,571)
Non-cash lease expense 113,534 109,832
Change in assets and liabilities:    
Accounts receivable (176,636) 33,237
Inventory (908,467) (1,022,148)
Prepaid expenses 47,285 32,903
Accounts payable 66,993 (247,189)
Accrued expenses, deferred revenue, operating lease and other liabilities 16,214 (1,225,313)
Net cash used in operating activities (11,011,840) (12,886,874)
Investing activities    
Purchases of short-term investments (1,473,419)
Maturities of short-term investments 4,500,000
Proceeds from the disposal of fixed assets 7,500
Purchases of property and equipment (120,197) (384,117)
Net cash (used in) provided by investing activities (120,197) 2,649,964
Financing activities    
Proceeds from issuance of common stock in connection with private placement 836,777 6,037,500
Proceeds from issuance of warrants in connection with private placement 1,813,223
Proceeds from issuance of common stock in connection with at-the-market offering program 5,033,906 2,552,656
Issuance costs attributed to common stock and warrants issued in private placement (1,320) (836,938)
Issuance costs in connection with at-the-market offering program (236,597) (234,725)
Deferred issuance costs in connection with at-the-market offering program (20,000)
Deferred issuance costs in connection with debt facility (75,000)
Share repurchases for the payment of employee taxes (81,403) (119,419)
Net cash provided by financing activities 7,269,586 7,399,074
Net decrease in cash and cash equivalents (3,862,451) (2,837,836)
Cash and cash equivalents at beginning of year 5,322,493 8,160,329
Cash and cash equivalents at end of year 1,460,042 5,322,493
Supplemental non-cash financing and investing transactions:    
Unpaid purchases of property and equipment 4,631
Modification of right-of-use asset and associated lease liability 199,385 97,536
Non-cash warrants issued in connection with debt facility 53,124
Unpaid issuance costs in connection with private placement 185,903
Unpaid deferred issuance costs $ 95,837