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<strong>Characterization of Gold Thin Films Deposited by Centuries-old Fire-gilding Method</strong>

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Title Statement <strong>Characterization of Gold Thin Films Deposited by Centuries-old Fire-gilding Method</strong>
 
Added Entry - Uncontrolled Name Joshi, Prakash ; Physics department, Bhaktapur Multiple Campus, Tribhuvan University, NEPAL
Maharjan, Nikesh ; Department of Physics, Brooklyn College and the Graduate Center of the City University of New York, Brooklyn, NY 11210, USA.
KC, Anupam ; Materials Science, Engineering and Commercialization Program (MSEC), Texas State University, San Marcos, TX 78666,
Nakarmi, Mim Lal; Department of Physics, Brooklyn College and the Graduate Center of the City University of New York, Brooklyn, NY 11210, USA
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Uncontrolled Index Term condensed matter physics; thin film material
Gold films, Fire-gilding method, Surface morphology, Reflectance
 
Summary, etc. We have explored the centuries-old fire-gilding method which is being practiced by craftsmen in Nepal. In this technique, gold films are deposited on metal by heating the paste of gold amalgam layer coated on the metal surface. Samples of gold thin films deposited on copper substrate by this traditional method were characterized by x-ray diffraction (XRD) for structural properties, and atomic force microscopy (AFM) and scanning electron microscopy (SEM) for surface morphology. The XRD pattern of the samples showed the formation of polycrystalline gold film on the copper substrate. Microstructure characterization of the surface morphologies from the AFM and SEM images showed the gold films have porous feature with submicron size pores. We also performed optical reflectance measurements of the gold films deposited by this method to investigate the effects of double coating of gold amalgam layers, burnishing process and iron oxide treatment on the gold film. We found that the optical reflectance is increased as the surface smoothness is increased by double coating and burnishing. We also found that the vivid golden luster is enhanced by iron oxide treatment due to increased reflectance in the red spectral region.
 
Publication, Distribution, Etc. Indian Journal of Pure & Applied Physics (IJPAP)
2022-02-16 10:24:46
 
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http://op.niscair.res.in/index.php/IJPAP/article/view/57063
 
Data Source Entry Indian Journal of Pure & Applied Physics (IJPAP); ##issue.vol## 60, ##issue.no## 2 (2022): Indian Journal of Pure & Applied Physics
 
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