Some naturally piezoelectricoccurring materials include Berlinite (structurally identical to quartz), cane sugar, quartz, Rochelle salt, topaz, tourmaline, and bone.
Dry bone exhibits some piezoelectric properties due to the apatite crystals, and the piezoelectriceffect is generally thought to act as a biological force sensor).
Some naturally piezoelectricoccurring materials include Berlinite (structurally identical to quartz), cane sugar, quartz, Rochelle salt, topaz, tourmaline, and bone.
Dry bone exhibits some piezoelectric properties due to the apatite crystals, and the piezoelectriceffect is generally thought to act as a biological force sensor).
https://makezine.com/2008/07/31/how-to-make-piezo-crystal/
Piezoelectric Baking Powder
Sodium Base Potassium Acid
Make Baking Powder - Mix Cream of Tartar with baking soda to create baking powder.
500 g (1 lb) of baking soda (sodium bicarbonate)[NaHCO3]
200 g (7 oz) of cream of tartar (potassium bitartrate)[KHC4H4O6]