Small Piezoelectric Quartz Crystals (1 of 2) (image) National Institute of Standards and Technology (NIST) Share Print E-Mail Caption Small piezoelectric quartz crystals are the key to micro thermogavimetric analysis. Here, minute amounts of the test sample are deposited on the crystals. Credit Kar/National Institute of Standards and Technology Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.