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탄소나노튜브-금속산화물 나노와이어의 3차원 혼성 나노구조 형성 및 응용
옥종걸(Jong G. Ok),A. John Hart,L. Jay Guo 대한기계학회 2014 대한기계학회 춘추학술대회 Vol.2014 No.11
We present the assembly and application of three-dimensional (3D) hybrid nanoarchitectures comprising carbon nanotubes (CNTs) and metal oxide (MOx) nanowires such as zinc oxide and vanadium oxide. The MOx nanowires are hierarchically assembled onto the surface of aligned or textured CNT constructs via the step-wise chemical vapor deposition (CVD) process at the temperature CNTs are free from oxidative degradation. Since the conformal highdensity MOx nanowires can be directly connected to highly conducting CNT framework over large interfacial area, the electrical response originating from functional MOx upon external stimuli can be rapidly and efficiently collected through the CNT framework, leading to many applications ranging from fast-responsive sensors to energy converters.
박종갑,이규태,연규범,Jaemin Choi,김민규,Byeol Han,박형원,L. Jay Guo,Jong G. Ok 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.95 No.-
We demonstrate a facile one-step fabrication offlexible ridge waveguides by using the nanochannelguidedlithography (NCL) that enables continuous extrusion of a polymer that forms waveguiding coreridge on an undercladding polymer substrate. NCL utilizes a well-cleaved mold edge with microtrenchpatterns to slide continuously over a UV-curable liquid resin-coated substrate under conformal contact,where the resin and substrate can be chosen for suitable waveguide core and undercladding materials. The local heating of a trench mold can control the viscosity of liquid resin for optimalfilling into themicrochannels followed by smooth extrusion, which is subsequently UV-cured. Such a smoothlyextruded resin core exhibits a very smooth surface potentially promising for the low-loss waveguidingoperation which was experimentally confirmed by optical insertion loss characterization. The proposedtechnique may provide a practical route to the continuous and seamless fabrication of scalablewaveguides and photonic elements.