Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
OPERATING ACTIVITIES
Net loss	$ (7,732,000)	$ (8,945,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Share-based compensation expense	2,402,000	3,461,000
Depreciation	14,000	35,000
Amortization of operating lease right-of-use assets	153,000	99,000
Changes in operating assets and liabilities:
Accounts receivable	(227,000)	(4,000)
Inventory	(30,000)	(50,000)
Prepaid research and development	120,000	64,000
Prepaid expenses and other current assets	55,000	(8,000)
Deferred financing costs	544,000	66,000
Long-term prepaid contracts	310,000	(1,214,000)
Accounts payable	7,000	(237,000)
Operating lease liability	(152,000)	(99,000)
Accrued and other current liabilities	(254,000)	(107,000)
Net cash used in operating activities	(4,852,000)	(6,939,000)
INVESTING ACTIVITIES
Purchases of short-term investments	0	(2,523,000)
Redemption of short-term investments	0	2,523,000
Purchases of property, plant and equipment	0	(11,000)
Net cash used in investing activities	0	(11,000)
FINANCING ACTIVITIES
Proceeds from convertible debt – related party	500,000	0
Proceeds from issuance of common stock	6,482,000	5,992,000
Proceeds from exercise of warrants	430,000	0
Proceeds from exercise of stock options	0	149,000
Payments on convertible debt – related party	(500,000)	0
Net cash provided by financing activities	6,912,000	6,141,000
Effect of exchange rate changes on cash	(6,000)	0
Net increase (decrease) in cash and cash equivalents	2,054,000	(809,000)
Cash and cash equivalents at the beginning of the year	432,000	1,241,000
Cash and cash equivalents at the end of the year	2,486,000	432,000
SUPPLEMENTAL INFORMATION
Interest paid in cash	38,000	14,000
Supplemental disclosure of non-cash activities:
Preferred stock dividends	0	77,000
Conversion of preferred stock into common stock	0	4,257,000
Right-of-use asset and lease liability (new lease)	398,000	0
Insurance premium financing	315,000	0
Insurance Premium Financing Payable [Member]
Changes in operating assets and liabilities:
Insurance premium financing payable	$ (62,000)	$ 0