Statements of Comprehensive Loss - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statements of Comprehensive Loss [Abstract]
Sales	$ 326,006	$ 183,234	$ 655,781	$ 443,746
Cost of sales	107,627	55,275	200,669	128,463
Gross margin	218,379	127,959	455,112	315,283
Operating expenses:
Research and development	894,868	888,701	1,889,890	2,239,402
Sales and marketing	21,828	13,384	44,647	250,573
General and administrative	1,051,399	543,625	1,943,386	1,193,817
Depreciation and amortization	151,359	165,882	304,812	335,292
Total operating expenses	2,119,454	1,611,592	4,182,735	4,019,084
Loss from operations	(1,901,075)	(1,483,633)	(3,727,623)	(3,703,801)
Other income (expense):
Interest income, net	144	1,620	308	21,956
Other income	821,515	0	821,515	0
Interest expense	(3,643)	(3,438)	(7,491)	(5,333)
Total other income (expense)	818,016	(1,818)	814,332	16,623
Loss before income taxes	(1,083,059)	(1,485,451)	(2,913,291)	(3,687,178)
Income tax expense	0	0	0	0
Net loss	(1,083,059)	(1,485,451)	(2,913,291)	(3,687,178)
Comprehensive loss:
Net loss	(1,083,059)	(1,485,451)	(2,913,291)	(3,687,178)
Change in fair value of available for sale investments	0	0	0	(20)
Total comprehensive loss	(1,083,059)	(1,485,451)	(2,913,291)	(3,687,198)
Net loss attributable to common stockholders, basic (in dollars per share)	(1,083,059)	(1,485,451)	(2,913,291)	(3,687,178)
Net loss attributable to common stockholders, diluted (in dollars per share)	$ (1,083,059)	$ (1,485,451)	$ (2,913,291)	$ (3,687,178)
Net loss per share attributable to common stockholders, basic (in dollars per share)	$ (0.52)	$ (1.55)	$ (1.89)	$ (3.86)
Net loss per share attributable to common stockholders, diluted (in dollars per share)	$ (0.52)	$ (1.55)	$ (1.89)	$ (3.86)
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic (in shares)	2,076,516	955,279	1,538,780	955,279
Weighted-average shares used in computing net loss per share attributable to common stockholders, diluted (in shares)	2,076,516	955,279	1,538,780	955,279