Pigment identification of colored drawings from Wuying Hall of the Imperial Palace by micro-Raman spectroscopy and energy dispersive X-ray spectroscopy

2006 ◽  
Vol 37 (1-3) ◽  
pp. 230-234 ◽  
Author(s):  
Ai Guo Shen ◽  
Xiao Hua Wang ◽  
Wei Xie ◽  
Jing Shen ◽  
Hua Yuan Li ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Energy Dispersive ◽  
Pigment Identification ◽  
X Ray ◽  
Micro Raman Spectroscopy ◽  
Imperial Palace

scholarly journals Egyptian Blue Pellets from the First Century BCE Workshop of Kos (Greece): Microanalytical Investigation by Optical Microscopy, Scanning Electron Microscopy-X-ray Energy Dispersive Spectroscopy and Micro-Raman Spectroscopy

Minerals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1063
Author(s):  
Ariadne Kostomitsopoulou Marketou ◽  
Fabrizio Andriulo ◽  
Calin Steindal ◽  
Søren Handberg
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Raman Spectroscopy ◽  
Optical Microscopy ◽  
First Century ◽  
Energy Dispersive ◽  
X Ray ◽  
Egyptian Blue ◽  
Micro Raman Spectroscopy ◽  
Scanning Electron

This paper aims to expand our understanding of the processes involved in the production of the artificial pigment Egyptian blue through the scientific examination of pigments found in the first century BCE workshop of the Greek island of Kos. There, 136 Egyptian blue pellets were brought to light, including successfully produced pellets, as well as partially successful and unsuccessful products. This study is based on the examination of eighteen samples obtained from pellets of various textures and tones of blue, including light and dark blue pigments, coarse and fine-grained materials, and one unsuccessful pellet of dark green/grey colour. The samples were examined by optical microscopy, scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy (SEM-EDS), and micro-Raman spectroscopy. These complementary microanalytical techniques provide localised information about the chemical and mineralogical composition of this multicomponent material, at a single-grain level. The results shed light on the firing procedure and indicate possible sources for raw materials (beach sand, copper alloys), as well as demonstrating the use of a low-alkali starting mixture. Moreover, two different process for the production of light blue pigments were identified: (a) decreased firing time and (b) grinding of the initially produced pellet and mixing with cobalt-containing material.

scholarly journals Use of WetSEM® capsules for convenient multimodal scanning electron microscopy, energy dispersive X-ray analysis, and micro Raman spectroscopy characterisation of technetium oxides

2021 ◽  
Author(s):  
D. J. Bailey ◽  
M. C. Stennett ◽  
J. Heo ◽  
N. C. Hyatt
Keyword(s):  
Raman Spectroscopy ◽  
Low Cost ◽  
Powder Materials ◽  
Spectroscopy Analysis ◽  
X Ray ◽  
Micro Raman Spectroscopy ◽  
Hazard And Risk ◽  
Sem Imaging ◽  
General User ◽  
532 Nm

AbstractSEM–EDX and Raman spectroscopy analysis of radioactive compounds is often restricted to dedicated instrumentation, within radiological working areas, to manage the hazard and risk of contamination. Here, we demonstrate application of WetSEM® capsules for containment of technetium powder materials, enabling routine multimodal characterisation with general user instrumentation, outside of a controlled radiological working area. The electron transparent membrane of WetSEM® capsules enables SEM imaging of submicron non-conducting technetium powders and acquisition of Tc Lα X-ray emission, using a low cost desktop SEM–EDX system, as well as acquisition of good quality μ-Raman spectra using a 532 nm laser.

Combined synchrotron x-ray diffraction and micro-Raman for following in situ the growth of solution-deposited YBa2Cu3O7 thin films

2005 ◽  
Vol 20 (12) ◽  
pp. 3270-3273 ◽  
Author(s):  
F. Berberich ◽  
H. Graafsma ◽  
B. Rousseau ◽  
A. Canizares ◽  
R. Ramy Ratiarison ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Additional Information ◽  
Micro Raman Spectroscopy ◽  
High Temperature Process ◽  
Structural Growth ◽  
Metal Organic ◽  
Insight Into

A unique combination of in situ synchrotron x-ray diffraction and in situ micro-Raman spectroscopy was used to study the growth process of YBa2Cu3O6+x films obtained by metal organic decomposition using trifluoroacetate precursor on LaAlO3 substrates. The techniques give complementary information: x-ray diffraction gives insight into the structural growth, whereas micro-Raman spectroscopy gives information of the chemical composition with additional information on the texture. To perform both experiments in situ, a special high-temperature process chamber was designed.

Enhanced yield strength in iron nanocomposite with in situ grown single-wall carbon nanotubes

2006 ◽  
Vol 21 (2) ◽  
pp. 522-528 ◽  
Author(s):  
A. Goyal ◽  
D.A. Wiegand ◽  
F.J. Owens ◽  
Z. Iqbal
Keyword(s):  
Carbon Nanotubes ◽  
Raman Spectroscopy ◽  
Yield Strength ◽  
Vapor Deposition ◽  
Single Wall Carbon Nanotubes ◽  
Iron Matrix ◽  
Single Wall Carbon ◽  
X Ray ◽  
Micro Raman Spectroscopy

The yield strength of iron-carbon nanotube composites fabricated by in situ chemical vapor deposition of 2.2 vol% single-wall carbon nanotubes (SWNTs) inside an iron matrix showed substantial enhancement up to 45%, relative to that of similarly treated pure iron samples without carbon nanotubes of the same piece density. The work hardening coefficient and the Vickers hardness coefficient also significantly increased in these composites relative to the reference samples. X-ray diffraction together with energy dispersive x-ray measurements and micro-Raman spectroscopy indicated no concomitant formation of carbides and very little amorphous carbon during the vapor deposition process. Micro-Raman spectroscopy and scanning and transmission electron microscopy showed spectral signatures and images, respectively, indicating the formation and dispersion of SWNTs within the cavities of the iron matrix. It is suggested that the increased strength of the nanocomposites was due to the mechanical support provided to these cavities by the extremely strong SWNTs.

Metal Deposition on Laser Modified Teflon Surfaces

1995 ◽  
Vol 385 ◽  
Author(s):  
Stefan Lätsch ◽  
Hiroyuki Hiraoka ◽  
Joachim Bargon
Keyword(s):  
Raman Spectroscopy ◽  
Photoelectron Spectroscopy ◽  
Deposition Process ◽  
Metal Deposition ◽  
Polymer Surfaces ◽  
Good Adhesion ◽  
X Ray ◽  
Micro Raman Spectroscopy ◽  
Polymer Adhesion ◽  
Secondary Ion

ABSTRACTCu, Ni, and Au were deposited with defined patterns and good adhesion by electroless plating, e-beam evaporation, and sputtering onto Teflon (polytetrafluoroethylene, PTFE), Teflon ET (PTFE-co-ethylene), Teflon FEP (PTFE-co-hexafluoropropylene) and Teflon PFA (PTFE-coperfluoroalkoxy vinyl ether) surfaces. The polymers had been irradiated in a tetramethyl – ammonium hydoxide solution (TMAH) by a Nd:YAG laser at 266 rim and by an excimer laser at 248 nrm prior to the metal deposition process. Both, the treated and virgin polymer surfaces were characterized by x-ray photoelectron spectroscopy (XPS), secondary ion mass spectroscopy (SIMS) and Micro-Raman spectroscopy. The increased metal to polymer adhesion at the interface was found to be due to chemical changes and is in the order Ni > Cu ≅ Au.

Blue halite colour centre aggregates studied by micro-Raman spectroscopy and X-ray diffraction

2012 ◽  
Vol 60 ◽  
pp. 124-128 ◽  
Author(s):  
Aleksandra Wesełucha-Birczyńska ◽  
Sylwia Zelek ◽  
Katarzyna Stadnicka
Keyword(s):  
Raman Spectroscopy ◽  
X Ray Diffraction ◽  
Colour Centre ◽  
X Ray ◽  
Micro Raman Spectroscopy

scholarly journals Origin of Ultraviolet Luminescence from Bulk ZnO Thin Films Grown by Molecular Beam Epitaxy

2011 ◽  
Vol 1 ◽  
pp. 135-139 ◽  
Author(s):  
M. Asghar ◽  
Khalid Mahmood ◽  
Adnan Ali ◽  
M.A. Hasan ◽  
I. Hussain ◽  
...  
Keyword(s):  
Thin Films ◽  
Raman Spectroscopy ◽  
Molecular Beam Epitaxy ◽  
Room Temperature ◽  
Molecular Beam ◽  
Energy Dispersive ◽  
Zno Thin Films ◽  
X Ray Diffraction ◽  
X Ray ◽  
Uv Luminescence

Origin of ultraviolet (UV) luminescence from bulk ZnO has been investigated with the help of photoluminescence (PL) measurements. Thin films of ZnO having 52%, 53% and 54% of Zn-contents were prepared by means of molecular beam epitaxy (MBE). We observed a dominant UV line at 3.28 eV and a visible line centered at 2.5 eV in the PL spectrum performed at room temperature. The intensity of UV line has been found to depend upon the Zn percentage in the ZnO layers. Thereby, we correlate the UV line in our samples with the Zn-interstitials-bound exciton (Zni-X) recombination. The results obtained from, x-ray diffraction, the energy dispersive X-ray spectrum (EDAX) and Raman spectroscopy supported the PL results.

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