Fiber optic probe (IMAGE) Optica Caption Researchers developed a tiny fiber optic force sensor that can measure extremely slight forces exerted by small objects. It can be immersed in a variety of liquids and doesn't need any additional packaging for most applications. Credit Denis Donlagic, University of Maribor 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.