Statements of Comprehensive Loss - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statements of Comprehensive Loss [Abstract]
Sales	$ 244,361	$ 347,456	$ 858,859	$ 971,974
Cost of sales	86,186	131,451	301,775	356,479
Gross margin	158,175	216,005	557,084	615,495
Operating expenses:
Research and development	2,072,830	1,648,160	5,137,441	4,542,147
Sales and marketing	70,883	90,374	444,678	222,414
General and administrative	1,970,408	1,395,063	4,642,182	4,024,356
Depreciation and amortization	125,318	139,597	391,683	426,480
Total operating expenses	4,239,439	3,273,194	10,615,984	9,215,397
Loss from operations	(4,081,264)	(3,057,189)	(10,058,900)	(8,599,902)
Other income (expense):
Interest income	92,392	80,373	232,133	109,572
Interest expense	(8,033)	(6,005)	(9,903)	(9,622)
Other expense	0	(22)	0	(22)
Other income (expense), net	84,359	74,346	222,230	99,928
Net loss	(3,996,905)	(2,982,843)	(9,836,670)	(8,499,974)
Net loss attributable to common stockholders, basic	(3,996,905)	(2,982,843)	(9,836,670)	(8,499,974)
Net loss attributable to common stockholders, diluted	$ (3,996,905)	$ (2,982,843)	$ (9,836,670)	$ (8,499,974)
Net loss per share attributable to common stockholders, basic (in dollars per share)	$ (0.26)	$ (0.25)	$ (0.74)	$ (0.72)
Net loss per share attributable to common stockholders, diluted (in dollars per share)	$ (0.26)	$ (0.25)	$ (0.74)	$ (0.72)
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic (in shares)	15,093,147	11,813,610	13,369,462	11,810,289
Weighted-average shares used in computing net loss per share attributable to common stockholders, diluted (in shares)	15,093,147	11,813,610	13,369,462	11,810,289