The Converse Piezoelectric Effect in Single Heptahelicene-derived Molecules (image) Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences (IOCB Prague) Share Print E-Mail Caption The converse piezoelectric effect in single heptahelicene-derived molecules. Credit Pavel Jelínek / Institute of Physics of the CAS Usage Restrictions May only be used with appropriate credit. 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.