Photo-induced optical bleaching in Ge12Sb25S63amorphous chalcogenide thin films: effect of 532 nm laser illumination

This review article gives an overview of different complexing agents used during chemical deposition of metal chalcogenide thin films and their role in controlling the resultant morphology by effective complexation of the metal ion.

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Vibrational and conductive microscopic investigation of thermal dewetting in Ag-As-S chalcogenide thin films

Applied Surface Science ◽

10.1016/j.apsusc.2021.149621 ◽

2021 ◽

pp. 149621

Author(s):

Correr Wagner ◽

Messaddeq Sandra Helena ◽

Douaud Alexandre ◽

Messaddeq Younes

Keyword(s):

Thin Films ◽

Microscopic Investigation ◽

Chalcogenide Thin Films

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Periodic microstructure induced by 532 nm polarized laser illumination on poly(urethane-imide) film: orientation of the azobenzene chromophore

Applied Surface Science ◽

10.1016/s0169-4332(01)01049-2 ◽

2002 ◽

Vol 193 (1-4) ◽

pp. 46-51 ◽

Cited By ~ 23

Author(s):

M. Li ◽

Q.H. Lu ◽

J. Yin ◽

Y. Sui ◽

G. Li ◽

...

Keyword(s):

Laser Illumination ◽

Periodic Microstructure ◽

Azobenzene Chromophore ◽

532 Nm

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Laser Induced Oxidation Effects in Bismuth Thin Films

MRS Proceedings ◽

10.1557/opl.2012.1720 ◽

2012 ◽

Vol 1477 ◽

Cited By ~ 3

Author(s):

Marco A. Zepeda ◽

Michel Picquart ◽

Emmanuel Haro-Poniatowski

Keyword(s):

Thin Films ◽

Raman Spectroscopy ◽

Laser Irradiation ◽

Raman Spectra ◽

Exposure Time ◽

Oxidation Process ◽

Energy Dispersion Spectroscopy ◽

Irradiation Power ◽

Pure Bismuth ◽

532 Nm

ABSTRACTThe Laser induced oxidation process of bismuth was investigated using Raman spectroscopy. Upon laser irradiation (λ = 532 nm) pure Bismuth was transformed gradually into Bi2O3. Raman spectra of the samples showed the characteristics peaks for pure Bi located at 71 cm-1 and 96 cm-1. The oxidation process was monitored by Raman spectra with four additional bands located at about 127 cm-1, 241 cm-1, 313 cm-1 and 455 cm-1. Maintaining constant the exposure time of irradiation, the intensity of these bands depended on laser irradiation power. The presence of Bi2O3 in the sample was confirmed through by energy dispersion spectroscopy (EDS).

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Pulsed Laser Deposition (PLD) Technique to Prepare Biocompatible Thin Films

Advances in Science and Technology ◽

10.4028/www.scientific.net/ast.49.56 ◽

2006 ◽

Vol 49 ◽

pp. 56-61 ◽

Cited By ~ 1

Author(s):

Joseph J. Beltrano ◽

Lorenzo Torrisi ◽

Anna Maria Visco ◽

Nino Campo ◽

E. Rapisarda

Keyword(s):

Thin Films ◽

Pulsed Laser ◽

Target Material ◽

Xrd Analysis ◽

Spot Size ◽

Laser Deposition ◽

Laser Source ◽

Medical Field ◽

Hot Plasma ◽

532 Nm

A Nd:YAG laser is employed to ablate different materials useful in the bio-medical field. The laser source operates in the IR (1064 nm), VIS (532 nm) and UV (355 nm) regions with a pulse duration of 3-9 ns, a pulse energy of 3-300 mJ, a spot size of 1 mm2 and a repetition rate of 1- 30 Hz. Target material of interest are Titanium, Carbon, Hydroxyapatite (HA) and Polyethylene (PE). Laser irradiation occurs in vacuum, where hot plasma is generated, and thin films are deposited on near substrates. Generally, substrates of silicon, titanium, titanium-alloys and polymers were employed. Biocompatible thin films are investigated with different surface techniques, such as IR spectroscopy, Raman spectroscopy, XRD analysis and SEM investigations. Depending of the kind of possible application, films require special properties concerning the grain size, porosity, uniformity, wetting, hardness, adhesion, crystallinity and composition. The obtained results will be presented and discussed with particular regard to HA..

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