Application of response surface methodology in the optimization of laser treatment in buckypaper lighting for field emission displays

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Please use this identifier to cite or link to this item: http://140.128.103.80:8080/handle/310901/23434

Title:	Application of response surface methodology in the optimization of laser treatment in buckypaper lighting for field emission displays
Authors:	Chen Y., Cheng C.-Y., Miao H.-Y., Zhang M., Liang R., Zhang C., Wang L.-C., Wang B.
Contributors:	High-Performance Materials Institute, Florida State University, Tallahassee FL 32310, United States;Department of Industrial Engineering and Enterprise Information, Tunghai University, 181 Taichung Harbor Road, Section 3, Taichung 40704, Taiwan;Department of Electrical Engineering, Tunghai University, 181 Taichung Harbor Road, Section 3, Taichung 40704, Taiwan;Tunghai Green Energy Development and Management Institute, Tunghai University, 181 Taichung Harbor Road, Section 3, Taichung 40704, Taiwan
Keywords:	Buckypaper;Carbon nanotube network;Carbon oxide;Central composite designs;CNT emitters;DOE;Factorial design;Field emission property;Field emitter;Irradiation process;Laser beam size;Laser parameters;Laser power;Laser treatment;Low energy laser;Luminance intensity;Machining parameters;Material selection;Pattern orientation;Process development;Response surface methodology;RSM;Scanning lasers;Thin sheet;Turn-on field;Carbon nanotubes;Design;Lighting;Liquid crystal displays;Loading;Nanotubes;Optimization;Surface properties;Lasers
Date:	2013
Issue Date:	2013-06-24T09:06:27Z (UTC)
Abstract:	Carbon nanotube field emission backlight (CNT-BLU) is promising to replace traditional backlighting devices in liquid crystal display (LCD) industry. This study reports a laser irradiation process to enhance field emission properties of buckypaper, a thin sheet of high-loading carbon nanotube network. The scanning laser treated the selected region of buckypaper to activate CNT emitters. The improvement of phosphorescence luminance intensity, uniformity, and the reduction of turn-on field were achieved by adjusting machining parameters of laser power, laser lens motion speed, laser resolution, laser beam size, and pattern orientation. Design of experiment and response surface methodology provided ways to rapidly search the feasible laser parameter setting for processing buckypaper field emitters and improving field emission properties within fewer experimental runs. 25-1 Fractional fracotrial design presented the initial models of five repsponses. In addition, the face-centered central composite design is applied since the 25-1 factional factorial design showed curvature significance. It assisted to give the scientifical insight of the following conclusions. High-energy laser treatment damages and burns the CNTs into carbon oxide materials; furthermore, it loses the effective CNTs. Low-energy laser treatment performs CNT activation and produced low field emission performance. In this study, we succeeded to apply statistical analysis methods to understand the physics and mechanics of laser-activated buckypaper field emission and, furthermore, improve, optimize, and demonstrate performance by material selection, process development, and characterization. ? 2012 Springer-Verlag London Limited.
Relation:	International Journal of Advanced Manufacturing Technology 46
Appears in Collections:	[工業工程與經營資訊學系所] 期刊論文

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