Results 161 to 170 of about 2,105,521 (205)

Evaluation of penetration process into young and elderly skin using confocal Raman spectroscopy

Vibrational Spectroscopy, 2019
Non-invasive in vivo human studies have always been of great importance owing to their advantages over the invasive studies. This research work also presents such a non-invasive study dealing with the penetration of two vitamin derivatives: retinyl ...
L. dos Santos, Vamshi Krishna Tippavajhala, Thiago O. Mendes, M. G. Pereira da Silva, P. Favero, C. A. Téllez-Soto, Airton A. Martin   +6 more
semanticscholar   +1 more source

Confocal Raman spectroscopy to trace lipstick with their smudges on different surfaces

Talanta, 2014
Lipsticks 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 ...
López-López, Maria, Özbek, Nil, García-Ruiz, Carmen   +2 more
openaire   +3 more sources

Penetration monitoring of drugs and additives by ATR‐FTIR spectroscopy/tape stripping and confocal Raman spectroscopy – A comparative study

European journal of pharmaceutics and biopharmaceutics, 2018
Vibrational spectroscopy is a useful tool for analysis of skin properties and to confirm the penetration of drugs and other formulation compounds into the skin. In particular, attenuated total reflection Fourier transform infrared (ATR‐FTIR) spectroscopy
L. Binder, Eva Maria Kulovits, Romana Petz, Johanna Ruthofer, D. Baurecht, V. Klang, C. Valenta   +6 more
semanticscholar   +1 more source

Corrosion inhibition of aluminium alloy AA6063-T5 by vanadates: Local surface chemical events elucidated by confocal Raman micro-spectroscopy

Corrosion Science, 2019
Chemical interactions between aqueous vanadium species and aluminium alloy AA6063-T5 were investigated in vanadate-containing NaCl solutions.
D. Kharitonov, J. Sommertune, C. Örnek, J. Ryl, I. Kurilo, P. Claesson, Jin-Shan Pan   +6 more
semanticscholar   +1 more source

Confocal micro-Raman spectroscopy of black soap films

The Journal of Chemical Physics, 1998
Black soap films from aqueous solutions of sodium dodecyl sulphate are studied by micro-Raman confocal spectroscopy. At the end of the draining process films of different thicknesses are obtained depending on the experimental conditions: Working in a closed humidified chamber leads to common black films while, under evaporation or in the presence of ...
Lecourt, B., Capelle, F., Adamietz, F., Malaplate, A., Blaudez, D., Kellay, H., Turlet, J. M.   +6 more
openaire   +2 more sources

Confocal Raman spectroscopy applied to microemulsions and nanoemulsions

Current Opinion in Colloid & Interface Science
Raman spectroscopy is a light scattering technique in which a molecule scatters incident light at different wavelengths depending on the chemical structure of the analyte, from a high-intensity laser light source. The Raman scattered light is detected to create the Raman spectrum, which is unique to the chemical compounds present in the sample, acting ...
Fernandez, Cintia Judith, Volpe, Verónica, Guerrero, Analía, Silva Do Nascimento, Danielle, Grunhut, Marcos   +4 more
openaire   +2 more sources

Confocal mapping of myelin figures with micro-Raman spectroscopy

Applied Physics A, 2017
We employ confocal micro-Raman spectroscopy (CMRS) with submicron spatial resolution to study the myelin structures (cylindrical lamellae) composed of nested surfactant C12E3 or lipid DMPC bilayers. The CMRS mapping indicates that for a straight C12E3 myelin, the surfactant concentration increases with the myelin width and is higher in the center ...
Jung-Ren Huang, Yu-Che Cheng, Hung Ji Huang, Hai-Pang Chiang   +3 more
openaire   +1 more source

Dual wavelength optical tweezers for confocal Raman spectroscopy

Optics Communications, 2005
We describe the use of dual optical tweezers to manipulate micron-size particles in and out of the focus of a confocal Raman microscope. One of the beams excites the Raman spectrum while the second tweezers improves the sensitivity of the technique and also allows for the manipulation of the environment of the trapped objects.
C.M. Creely, G.P. Singh, D. Petrov
openaire   +1 more source

Depth profiling of polymer films by confocal Raman spectroscopy

Macromolecular Symposia, 2003
AbstractConfocal Raman microspectroscopy has many potential applications in the study of polymer‐solvent interactions, including the determination of solvent and polymer‐solvent complex depth profiles. This contribution focuses on preventing the formation of polymer‐solvent complexes, using surface chemical modification of PVC films.
Stephen J. Spells, Helmut Reinecke, Javier Sacristán, Jack Yarwood, Carmen Mijangos   +4 more
openaire   +1 more source

In Vivo Determination of Moisturizers Efficacy on Human Skin Hydration by Confocal Raman Spectroscopy

AAPS PharmSciTech, 2018
This research work deals with in vivo testing of the efficacy of commercial moisturizer products on the hydration of human skin, as there are various in vitro and ex vivo studies questioning their activity.
Vamshi Krishna Tippavajhala, T. Magrini, D. Matsuo, M. G. Silva, P. Favero, L. R. de Paula, Airton A. Martin   +6 more
semanticscholar   +1 more source