Science Daily June 30, 2022 Laser-induced thermal voxels (LITV) offer a facile platform to directly integrate nanocrystalline metal oxide and mixed metal oxide materials onto heating platforms, with access to a wide variety of compositions and morphologies including many transition metals and noble metals. Researchers at Pennsylvania State University combined laser writing and responsive sensor technologies to fabricate the first highly customizable microscale gas sensing devices. They investigated the sensing performance of a representative set of n-type and p-type LITV-deposited metal oxides and their mixtures (CuO, NiO, CuO/ZnO, and Fe2O3/Pt) in response to reducing and oxidizing gases (H2S, NO2, NH3, […]
Tag Archives: Gas sensors
A colorful detector: Crystalline material reversibly changes color when absorbing water
Science Daily August 25, 2020 To ensure safety and efficiency factories often need to be monitored for potentially toxic gasses or even excess humidity. Sensors for water vapor are particularly important for monitoring toxic gasses or even excess humidity. But they may have limited lifetimes or require external power. An international team of researchers (Japan, Spain) formed van der Waals porous crystal (VPC-1) from an aromatic dendrimer containing carbon rings anchored to a dibenzophenazine core. Even though van der Waals forces are usually considered to be relatively weak, the crystal stays together during operation. Upon exposure to water vapor, the […]