Optimization of supersonic nozzle flow for titanium dioxide thin-film coating by aerosol deposition
- Optimization of supersonic nozzle flow for titanium dioxide thin-film coating by aerosol deposition
- 이민욱; J.J. Park; D.Y. Kim; S.S. Yoon; H.Y. Kim; D.H. Kim; S.C. James; S. Chandra; Thomas Coyle; J.H. Ryu; W.H. Yoon; D.S. Park
- Aerosol deposition; Supersonic nozzle flow; Shockwave; Nozzle optimization; Computational fluid dynamics
- Issue Date
- Journal of aerosol science
- VOL 42, NO 11-780
- 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.
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