In JoVE (1)
Articles by Qingyang Du in JoVE
Electrospray Deposition of Uniform Thickness Ge23Sb7S70 and As40S60 Chalcogenide Glass Films Spencer Novak1, Pao-Tai Lin2,3, Cheng Li4, Nikolay Borodinov1, Zhaohong Han5, Corentin Monmeyran5, Neil Patel5, Qingyang Du5, Marcin Malinowski4, Sasan Fathpour4, Chatdanai Lumdee4, Chi Xu4, Pieter G. Kik4, Weiwei Deng6, Juejun Hu7, Anuradha Agarwal7, Igor Luzinov1, Kathleen Richardson4 1Department of Materials Science and Engineering, Clemson University, 2Department of Materials Science and Engineering, Texas A&M University, 3Department of Electrical and Computer Engineering, Texas A&M University, 4College of Optics and Photonics, Center for Research and Education in Optics and Lasers (CREOL), University of Central Florida, 5Department of Materials Science and Engineering, Massachusetts Institute of Technology, 6Department of Mechanical Engineering, Virginia Polytechnic Institute, 7Microphotonics Center, Massachusetts Institute of Technology A method of uniform thickness solution-derived chalcogenide glass film deposition is demonstrated using computer numerical controlled motion of a single-nozzle electrospray.
Other articles by Qingyang Du on PubMed
Foldable and Cytocompatible Sol-gel TiO2 Photonics Scientific Reports. 2015 | Pubmed ID: 26344823 Integrated photonics provides a miniaturized and potentially implantable platform to manipulate and enhance the interactions between light and biological molecules or tissues in in-vitro and in-vivo settings, and is thus being increasingly adopted in a wide cross-section of biomedical applications ranging from disease diagnosis to optogenetic neuromodulation. However, the mechanical rigidity of substrates traditionally used for photonic integration is fundamentally incompatible with soft biological tissues. Cytotoxicity of materials and chemicals used in photonic device processing imposes another constraint towards these biophotonic applications. Here we present thin film TiO2 as a viable material for biocompatible and flexible integrated photonics. Amorphous TiO2 films were deposited using a low temperature (
Low-loss Photonic Device in Ge-Sb-S Chalcogenide Glass Optics Letters. Jul, 2016 | Pubmed ID: 27367109 Low-loss waveguides constitute an important building block for integrated photonic systems. In this work, we investigated low-loss photonic device fabrication in Ge23Sb7S70 chalcogenide glass using electron beam lithography followed by plasma dry etching. High-index-contrast waveguides with a low propagation loss of 0.5 dB/cm and microdisk resonators with an intrinsic quality factor (Q-factor) of 1.2×106 were demonstrated. Both figures represent, to the best of our knowledge, the best low-loss results reported thus far in submicrometer single-mode chalcogenide glass devices.