Statements of Comprehensive Loss - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statements of Comprehensive Loss [Abstract]
Sales	$ 269,581	$ 313,208	$ 925,362	$ 756,954
Cost of sales	105,403	90,435	306,072	218,898
Gross margin	164,178	222,773	619,290	538,056
Operating expenses:
Research and development	1,140,577	995,620	3,030,467	3,235,022
Sales and marketing	43,284	31,010	87,931	281,583
General and administrative	1,087,363	596,778	3,030,749	1,790,595
Depreciation and amortization	144,399	164,242	449,211	499,534
Total operating expenses	2,415,623	1,787,650	6,598,358	5,806,734
Loss from operations	(2,251,445)	(1,564,877)	(5,979,068)	(5,268,678)
Other income (expense):
Interest income, net	1,649	342	1,957	22,298
Other income	0	0	821,515	0
Interest expense	(7,055)	(3,760)	(14,546)	(9,093)
Other expenses	(2,850)	0	(2,850)	0
Total other income (expense)	(8,256)	(3,418)	806,076	13,205
Loss before income taxes	(2,259,701)	(1,568,295)	(5,172,992)	(5,255,473)
Income tax expense	0	0	0	0
Net loss	(2,259,701)	(1,568,295)	(5,172,992)	(5,255,473)
Comprehensive loss:
Net loss	(2,259,701)	(1,568,295)	(5,172,992)	(5,255,473)
Change in fair value of available for sale investments	0	0	0	(20)
Total comprehensive loss	(2,259,701)	(1,568,295)	(5,172,992)	(5,255,493)
Net loss attributable to common stockholders, basic (in dollars per share)	(2,259,701)	(1,568,295)	(5,172,992)	(5,255,473)
Net loss attributable to common stockholders, diluted (in dollars per share)	$ (2,259,701)	$ (1,568,295)	$ (5,172,992)	$ (5,255,473)
Net loss per share attributable to common stockholders, basic (in dollars per share)	$ (0.19)	$ (1.64)	$ (1.04)	$ (5.50)
Net loss per share attributable to common stockholders, diluted (in dollars per share)	$ (0.19)	$ (1.64)	$ (1.04)	$ (5.50)
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic (in shares)	11,799,720	955,649	4,996,680	955,402
Weighted-average shares used in computing net loss per share attributable to common stockholders, diluted (in shares)	11,799,720	955,649	4,996,680	955,402