Index Finger with Gold Nanomesh Conductor (image) University of Tokyo Share Print E-Mail Caption The electric current from a flexible battery placed near the knuckle flows through the conductor and powers the LED just below the fingernail. Credit 2017 Someya Laboratory. Usage Restrictions Related to the press release only 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.