Phys.org April 7, 2022 Glass that transmits IR wavelengths is essential for many applications. However, infrared glasses are difficult to manufacture, fragile and degrade easily in the presence of moisture. Researchers in Switzerland have developed a new technique where they created an arbitrarily shaped 3D cavity inside a fused silica glass substrate using femtosecond laser-assisted chemical etching. They used a miniaturized version of pressure-assisted casting, in which a second material was melted and pressurized so that it could flow and solidify within the network of carved silica cavities. The second material can be a metal, glass, or any material with […]
Tag Archives: Optical devices
Researchers integrate optical devices made of multiple materials onto single chip
Science Daily September 29, 2021 An international team of researchers (UK, Italy, Australia) has developed transfer printing process and demonstrated its ability to place devices made of multiple materials on a single chip, all integrated within a footprint similar in size to the devices themselves. The method is based on reversible adhesion in which a device is picked up and released from its growth substrate and placed onto a new surface. The process uses a soft polymer stamp mounted on a robotic motion control stage to pick up an optical device from the substrate on which it was made. When […]