Optimization of supersonic nozzle flow for titanium dioxide thin-film coating by aerosol deposition

Title
Optimization of supersonic nozzle flow for titanium dioxide thin-film coating by aerosol deposition
Authors
이민욱J.J. ParkD.Y. KimS.S. YoonH.Y. KimD.H. KimS.C. JamesS. ChandraThomas CoyleJ.H. RyuW.H. YoonD.S. Park
Keywords
Aerosol deposition; Supersonic nozzle flow; Shockwave; Nozzle optimization; Computational fluid dynamics
Issue Date
2011-11
Publisher
Journal of aerosol science
Citation
VOL 42, NO 11-780
Abstract
Aerosol deposition (AD) is an efficient technique for customized coating of various substrates. The small particles of AD yield a dense coating layer with small voids. AD is amenable to rapid coating (mass production), thus, it is economically attractive. Low-temperature AD coating is desirable because it minimizes the thermal degradation of the substrate. An optimized low-cost AD coating technique is of significant interest to solar-cell engineers seeking to reduce manufacturing costs. While most previous studies ignore the importance of nozzle geometry on coating performance, this paper examines non-optimized nozzles and commensurate shockwaves using computational fluid dynamics (CFD). The optimized nozzle geometry obtained from CFD can rapidly prototype nozzles. The CFD-designed nozzles with optimized geometry yielded significantly improved coating quality over non-optimized nozzles.
URI
http://pubs.kist.re.kr/handle/201004/66225
ISSN
0021-8502
Appears in Collections:
KIST Publication > Article
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