Equity Incentive Plan - Total stock-based compensation expense (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Equity Incentive Plan
Total stock-based compensation expense	$ 271,360	$ 358,316
Research and development
Equity Incentive Plan
Total stock-based compensation expense	42,378	38,080
General and administrative
Equity Incentive Plan
Total stock-based compensation expense	$ 228,982	$ 320,236