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Condensed Statements of Cash Flows (Unaudited) - USD ($)
 6 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Operating activities    
Net loss $ (5,255,597) $ (5,865,542)
Adjustments to reconcile net loss to net cash used in operating activities:    
Amortization and depreciation 79,799 53,692
Stock-based compensation 537,809 435,788
Amortization of discounts and premiums on short-term investments (41,003)
Non-cash lease expense 53,886 52,905
Change in assets and liabilities:    
Accounts receivable (180,715) 11,752
Inventory (469,769) (123,616)
Prepaids (74,054) (163,990)
Accounts payable (24,862) 33,800
Accrued expenses, deferred revenue, operating leases and other liabilities (1,669,283) (335,516)
Net cash used in operating activities (7,043,789) (5,900,727)
Investing activities    
Purchases of short-term investments (1,473,419)
Maturities of short-term investments 3,500,000
Purchase of fixed assets (187,206) (154,810)
Net cash provided by (used in) investing activities 1,839,375 (154,810)
Financing activities    
Proceeds from issuance of common stock in connection with at-the-market offering program and public offering 928,257 13,350,582
Issuance costs related to at-the-market offering program and public offering (183,359) (1,327,300)
Share repurchases for the payment of employee taxes (98,650)
Net cash provided by financing activities 646,248 12,023,282
Net (decrease) increase in cash and cash equivalents (4,558,166) 5,967,745
Cash and cash equivalents at beginning of period 8,160,329 6,901,346
Cash and cash equivalents at end of period 3,602,163 12,869,091
Supplemental non-cash financing and investing transactions:    
Reclass of deferred offering costs to additional paid-in capital in connection with public offering 24,980
Modification of right-of-use asset and associated lease liability 97,536
Purchased fixed assets in accounts payable $ 50,646