End-Fire Injection Device (IMAGE) Optica Caption The researchers created chip-based devices, such as the one shown here, that incorporate a microdisk and their new end-fire injection coupling technique. The new light-delivery technique could bring down the cost and improve the performance of chip-based biosensors. Credit Qinghai Song, Harbin Institute of Technology in China Usage Restrictions None License Licensed 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.