In vivo determination of the absorbance spectra of human skin

2002 ◽  
Author(s):  
Queyu Li ◽  
Yang Wang ◽  
Yong-Lin Zhang
Keyword(s):  
Human Skin ◽  
Absorbance Spectra

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

2018 ◽  
Vol 19 (7) ◽  
pp. 3177-3186 ◽  
Author(s):  
Vamshi Krishna Tippavajhala ◽  
Taciana D. Magrini ◽  
Daniele C. Matsuo ◽  
Michely G. P. Silva ◽  
Priscila P. Favero ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Human Skin ◽  
Skin Hydration ◽  
Confocal Raman Spectroscopy ◽  
Confocal Raman

scholarly journals Computational models for the determination of depth-dependent mechanical properties of skin with a soft, flexible measurement device

2016 ◽  
Vol 472 (2194) ◽  
pp. 20160225 ◽  
Author(s):  
Jianghong Yuan ◽  
Canan Dagdeviren ◽  
Yan Shi ◽  
Yinji Ma ◽  
Xue Feng ◽  
...  
Keyword(s):  
Human Skin ◽  
Output Voltage ◽  
Computational Models ◽  
Geometrical Parameters ◽  
Non Invasive ◽  
Conformal Modulus ◽  
Flexible Measurement

Conformal modulus sensors (CMS) incorporate PZT nanoribbons as mechanical actuators and sensors to achieve reversible conformal contact with the human skin for non-invasive, in vivo measurements of skin modulus. An analytic model presented in this paper yields expressions that connect the sensor output voltage to the Young moduli of the epidermis and dermis, the thickness of the epidermis, as well as the material and geometrical parameters of the CMS device itself and its encapsulation layer. Results from the model agree well with in vitro experiments on bilayer structures of poly(dimethylsiloxane). These results provide a means to determine the skin moduli (epidermis and dermis) and the thickness of the epidermis from in vivo measurements of human skin.

In-vivo Raman spectroscopy of human skin: determination of the composition of natural moisturizing factor

1999 ◽  
Author(s):  
Peter J. Caspers ◽  
Gerald W. Lucassen ◽  
Rolf Wolthuis ◽  
Hajo A. Bruining ◽  
Gerwin J. Puppels
Keyword(s):  
Raman Spectroscopy ◽  
Human Skin ◽  
In Vivo Raman Spectroscopy

In vivo determination of the Infrared‐A protection factor on human skin

2021 ◽  
Author(s):  
Su Ji Kim ◽  
Hyo Jin Lee ◽  
Ji Hyun Lee ◽  
Heemuk Oh ◽  
Saerom Park ◽  
...  
Keyword(s):  
Human Skin ◽  
Protection Factor

scholarly journals Depth-scanning confocal Raman for rapid in vivo determination of testosterone concentration profiles in human skin

2014 ◽  
Vol 1 (1) ◽  
Author(s):  
Marco Antonio Botelho ◽  
Stela Julia Guerreiro ◽  
Dinalva Brito Queiroz ◽  
Gisele Barros ◽  
Monaliza Cavalcante ◽  
...  
Keyword(s):  
Human Skin ◽  
Concentration Profiles ◽  
Testosterone Concentration ◽  
Confocal Raman

scholarly journals Contribution to the Determination of In Vivo Mechanical Characteristics of Human Skin by Indentation Test

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
Marie-Angèle Abellan ◽  
Hassan Zahouani ◽  
Jean-Michel Bergheau
Keyword(s):  
Human Skin ◽  
Mechanical Characteristics ◽  
Heterogeneous Media ◽  
Indentation Test ◽  
Stratified Medium ◽  
Ionic Component ◽  
Intact Skin ◽  
Behaviour Law

This paper proposes a triphasic model of intact skin in vivo based on a general phenomenological thermohydromechanical and physicochemical (THMPC) approach of heterogeneous media. The skin is seen here as a deforming stratified medium composed of four layers and made out of different fluid-saturated materials which contain also an ionic component. All the layers are treated as linear, isotropic materials described by their own behaviour law. The numerical simulations of in vivo indentation test performed on human skin are given. The numerical results correlate reasonably well with the typical observations of indented human skin. The discussion shows the versatility of this approach to obtain a better understanding on the mechanical behaviour of human skin layers separately.

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