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Tiny lens that uses light trickery to detect gas created in Germany
Researchers have developed a micro lens using hybrid glass, changing its refractive behavior in response to gas presence.
A research team from the University of Jena has developed a tiny optical lens, just a few millimeters in size, that can change its refractive behavior in the presence of gas. Fundamental viscosity data are reported using a ball penetration technique, and subsequently employed to demonstrate the fabrication of micro-optical devices by thermal imprinting. Using 3D-printed fused silica templates, we show that concave as well as convex lens structures can be obtained at high precision by remelting the glass without trading-off on material quality.
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