2 Parallel Free-Standing Waveguides Made of Polycrystalline Diamond Serve as Mechanical Resonators. (image) Helmholtz Association Share Print E-Mail Caption Two parallel free-standing waveguides made of polycrystalline diamond serve as mechanical resonators. Optical fields (red/blue) are observed to propagate inside of them. Credit Graphic: KIT/CFN/Pernice Usage Restrictions None 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.