3D printable optical setup (IMAGE) Osaka Prefecture University Caption 3D printable optical setup with built-in sample chamber for a FT-IR spectrometer. Sample is put on the Si ATR crystals for measurement. Credit ©M. Takahashi & K. Okada, Osaka Prefecture University 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.