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Application of ellipsometry techniques to biological materials
Linköpings universitet, Institutionen för fysik, kemi och biologi, Tillämpad optik. Linköpings universitet, Tekniska högskolan.ORCID-id: 0000-0001-9229-2028
2011 (engelsk)Inngår i: THIN SOLID FILMS, ISSN 0040-6090, Vol. 519, nr 9, s. 2589-2592Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Ellipsometry is well-suited for bioadsorption studies and numerous reports, mainly using null ellipsometry, are found on this subject whereas investigations addressing structural properties of thin biolayers are few. Here two examples based on the use of spectroscopic ellipsometry (SE) on the latter are briefly discussed. In the first example, time evolution of thickness, spectral refractive index and surface mass density of a fibrinogen matrix forming on a silicon substrate are investigated with SE and a structural model of the protein matrix is discussed. In the second example a model dielectric function concept for protein monolayers is presented. The model allows parameterization of the optical properties which facilitates monitoring of temperature induced degradation of a protein layer. More recently, photonic structures in beetles have been studied with SE. It is shown here that full Mueller-matrix SE can resolve very complex nanostructures in scarab beetles, more specifically chiral structures causing reflected light to become circularly polarized.

sted, utgiver, år, opplag, sider
ELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND , 2011. Vol. 519, nr 9, s. 2589-2592
Emneord [en]
Bioadsorption, Mueller-matrix ellipsometry, Infrared ellipsomety, Scarab beetles
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Identifikatorer
URN: urn:nbn:se:liu:diva-67699DOI: 10.1016/j.tsf.2010.11.082ISI: 000289174200005OAI: oai:DiVA.org:liu-67699DiVA, id: diva2:412616
Tilgjengelig fra: 2011-04-26 Laget: 2011-04-26 Sist oppdatert: 2013-10-14

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