Measuring microelastic properties of stratum corneum.
Colloids Surf B Biointerfaces
; 48(1): 6-12, 2006 Mar 01.
Article
em En
| MEDLINE
| ID: mdl-16460919
ABSTRACT
We explore the compression moduli of a thin biological tissue through probe microscopy. The elastic modulus (E') of isolated stratum corneum is measured at varying depths through the use of an atomic force microscope (AFM) as well as a nano-indentor (Hysitron Triboscope). In addition, a nano-DMA is used to measure visco-elastic properties. Measurements on dry and hydrated stratum corneum show an order of magnitude difference in E' and the measured tandelta (E''/E') is seen to increase from approximately 0.1 to 0.25. In addition, extensive validation of the experiments is conducted with different indentation probes at different force ranges to reveal the effects of indentor geometry and indentation depth on the measured elastic modulus. The sensitivity of the measurements is tested with applying known treatments to stratum corneum and exploring their effects on biomechanical parameters.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Teste de Materiais
/
Epiderme
/
Células Epidérmicas
Limite:
Animals
Idioma:
En
Ano de publicação:
2006
Tipo de documento:
Article