Hydrogel-bases liquid metal antenna (IMAGE) Optica Caption Pictured is the flexible and stretchable hydrogel-based liquid metal antenna on a glass slide. The green plate is used to attached a SMA connector for antenna feed. Credit Tao Chen, Xi’an Jiaotong University in China Usage Restrictions None License Original content 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.