Guangyu Chai

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We report a first work on nanofabrication of hydrogen nanosensor from single ZnO branched nanorods (tripod) using in-situ lift-out technique and performed in the chamber of focused ion beam (FIB) system. Self-assembled ZnO branched nanorod has been grown by a cost-effective and fast synthesis route using an aqueous solution method and rapid thermal(More)
Nanofabrication and characterization of ZnO nanorod arrays and branched microrods by aqueous solution route and rapid thermal processing Oleg Lupan a,b,∗, Lee Chow a, Guangyu Chai c, Beatriz Roldan a, Ahmed Naitabdi a, Alfons Schulte a, Helge Heinrich a,d a Department of Physics, University of Central Florida, P.O. Box 162385 Orlando, FL 32816-2385, USA b(More)
A comprehensive study of the effect of cadmium sources on chemical bath deposited cadmium sulfide thin films is reported. Four different cadmium sources; cadmium sulfate, cadmium chloride, cadmium iodide, and cadmium acetate have been used. The effect of cadmium sources on film optical/electrical properties as well as film thickness, composition, crystal(More)
Oleg Lupan,*,†,‡ Lee Chow,†,§ Luis K. Ono,† Beatriz Roldan Cuenya,†,| Guangyu Chai,⊥ Hani Khallaf,† Sanghoon Park,† and Alfons Schulte† Department of Physics, UniVersity of Central Florida, P.O. Box 162385, Orlando, Florida 32816, Department of Microelectronics and Semiconductor DeVices, Technical UniVersity of MoldoVa, 168 Stefan Cel Mare BouleVard,(More)
1 Department of Physics, University of Central Florida, P.O. Box 162385, Orlando, USA 2 Department of Microelectronics and Semiconductor Devices, Technical University of Moldova, Stefan cel Mare Blvd. 168, 2004, Chisinau, Moldova 3 Apollo Technologies, Inc., 205 Waymont Court, S111, FL 32746, Lake Mary, USA 4 Advanced Materials Processing and Analysis(More)
We report the fabrication of an individual carbon nanotube (CNT) electron field emitter using a focused-ion-beam (FIB) technique. The monolithic multiwall CNT with a graphitic shield is synthesized using chemical vapor deposition technique. The FIB technique is applied to attach the monolithic multiwall CNT on an etched tungsten tip. Field emission(More)
Department of Physics, University of Central Florida, P.O. Box 162385 Orlando, FL 32816-2385, USA Department of Microelectronics and Semiconductor Devices, Technical University of Moldova, Stefan Cel Mare Boulevard 168, Chisinau MD-2004, Republic of Moldova Apollo Technologies, Inc. 205 Waymont Court, S111, Lake Mary, FL 32746, USA Advanced Materials(More)
Ga-doped CdS thin films, with different [Ga]/[Cd] ratios, were grown using chemical bath deposition. The effect of Ga-doping on optical properties and bandgap of CdS films is investigated. Resistivity, carrier density, and mobility of doped films were acquired using Hall effect measurements. Crystal structure as well as crystal quality and phase transition(More)