Radiation-Resistant Circuits (image) University of Utah Caption Shown here are three kinds of micro-electro-mechanical systems (MEMS) circuits built from microscopic mechanical devices, known as "logic gates," designed to resist ionizing radiation. The circuits are a 2-bit multiplexer (top), a 1-bit full adder (center) and a 2-bit full adder (bottom). Credit Massood Tabib-Azar, University of Utah Usage Restrictions None 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.