Statements of Comprehensive Loss - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statements of Comprehensive Loss [Abstract]
Sales	$ 320,514	$ 303,113	$ 614,498	$ 624,518
Cost of sales	110,469	102,353	215,589	225,028
Gross margin	210,045	200,760	398,909	399,490
Operating expenses:
Research and development	1,527,172	1,472,924	3,064,611	2,893,987
Sales and marketing	128,899	63,177	373,795	132,040
General and administrative	1,356,637	1,181,938	2,671,774	2,629,293
Depreciation and amortization	133,299	142,684	266,365	286,883
Total operating expenses	3,146,007	2,860,723	6,376,545	5,942,203
Loss from operations	(2,935,962)	(2,659,963)	(5,977,636)	(5,542,713)
Other income (expense):
Interest income	42,652	26,745	139,741	29,199
Interest expense	(198)	(883)	(1,870)	(3,617)
Other income (expense), net	42,454	25,862	137,871	25,582
Net loss	(2,893,508)	(2,634,101)	(5,839,765)	(5,517,131)
Net loss attributable to common stockholders, basic	(2,893,508)	(2,634,101)	(5,839,765)	(5,517,131)
Net loss attributable to common stockholders, diluted	$ (2,893,508)	$ (2,634,101)	$ (5,839,765)	$ (5,517,131)
Net loss per share attributable to common stockholders, basic (in dollars per share)	$ (0.22)	$ (0.22)	$ (0.47)	$ (0.47)
Net loss per share attributable to common stockholders, diluted (in dollars per share)	$ (0.22)	$ (0.22)	$ (0.47)	$ (0.47)
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic (in shares)	13,107,590	11,812,988	12,493,334	11,808,601
Weighted-average shares used in computing net loss per share attributable to common stockholders, diluted (in shares)	13,107,590	11,812,988	12,493,334	11,808,601