Results 211 to 220 of about 17,759 (254)
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On optical depth profiling using confocal Raman spectroscopy
Analytical and Bioanalytical Chemistry, 2009Until 2006 the performance of confocal Raman spectroscopy depth profiling was typically described and modeled through the application of geometrical optics, including refraction at the surface, to explain the degree of resolution and the precise form of the depth profile obtained from transparent and semicrystalline materials.
Freebody, N. A. +2 more
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Characterization of Graphene by Confocal Raman Spectroscopy
2018Confocal Raman spectroscopy has emerged as a key characterization technique in graphene research, as with this technique important material characteristics can be obtained locally and noninvasively. In this chapter, the fundamentals of the Raman spectrum of graphene are reviewed and the utilization of Raman spectroscopy for graphene characterization is
Christoph Neumann, Christoph Stampfer
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Dual-Axes Confocal Microlens for Raman Spectroscopy
2009 IEEE 22nd International Conference on Micro Electro Mechanical Systems, 2009This paper presents a novel dual-axes scanning microlens for in vivo near infrared (NIR) Raman spectroscopy. In vivo Raman spectra of fibrosarcoma tumor skin and normal mouse skin measured from the microlens are reported. Out-of-plane (Z-axis) and transverse (X-axis) actuations are demonstrated using electrostatic and electromagnetic forces ...
C.P.B. Siu, H. Wang, H. Zeng, M. Chiao
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In vivo confocal Raman spectroscopy: The window into the skin
International Journal of Cosmetic ScienceAbstractDevelopment of in vivo confocal Raman spectroscopy (ICRS) methodology over the last 20 years has enabled previously unavailable capability to acquire molecular concentration gradients across the stratum corneum (SC), at the micron level and in a clinical setting. Professor Tony Rawlings has been a driving force in SC research for over 30 years,
J. M. Crowther, P. J. Matts
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On Confocal Raman Spectroscopy of Semicrystalline Polymers: The Effect of Optical Scattering
Applied Spectroscopy, 2003A series of semicrystalline polymers has been prepared through morphological control. Each of these has an identical refractive index but a different, well-defined, scattering behavior. From existing geometrical optical theories of confocal Raman spectroscopy, these materials should behave identically. Initially, the extent of scattering in each system
MacDonald, A. M. +2 more
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Stress Mapping by Confocal Raman Spectroscopy on Solar Cells and Modules
2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC) (A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC), 2018In this work, we show the latest progress in the confocal micro-Raman spectroscopy for determination of stress within embedded solar cells. We present measurements proving that the module front glass has no influence on the stress measurement. We also present the first large area stress mapping on a quarter solar cell within a single-cell laminate.
Beinert, A. J. +6 more
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In vivo Raman Confocal Spectroscopy in the Investigation of the Skin Barrier
2016The epidermal barrier, predominantly attributed to the stratum corneum (SC), is the outermost part of our body that comprises multiple defensive functions against exogenous attacks and the loss of body substances, e.g. water. A novel investigative method, in vivo Raman confocal spectroscopy (RCS), is employed to study the composition of the epidermal ...
Razvigor, Darlenski, Joachim W, Fluhr
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Raman Spectroscopy and Confocal Raman Imaging in Mineralogy and Petrography
2010Raman spectroscopy has long been used in geosciences and a wealth of data and publications are available. The majority of this information originates from point measurements using micro-Raman setups. With the application of confocal Raman imaging, additional analytical possibilities arise with respect to analyzing the three-dimensional spatial ...
Marc Fries, Andrew Steele
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Surface Analysis Using Confocal Raman Micro-Spectroscopy
2002Recent developments in instrumentation and the availability of several high quality commercial Raman microscopes have made Raman micro-spectroscopy an emerging tool for surface analysis. Specifically, confocal Raman micro-spectroscopy allows for near diffraction-limited spatial resolution, with the chemical and structural information of vibrational ...
C. Hyett +3 more
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Confocal Raman spectroscopy to trace lipstick with their smudges on different surfaces
Talanta, 2014Lipsticks are very popular cosmetic products that can be transferred by contact to different surfaces, being important forensic evidence with an intricate analysis if they are found in a crime scene. This study evaluates the use of confocal Raman microscopy at 780 nm excitation wavelength for the nondestructive identification of 49 lipsticks of ...
Maria, López-López +2 more
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