Mueller matrix spectroscopic ellipsometry study of chiral nanocrystalline cellulose films

Autor(es)

Mendoza-Galvan, Arturo ^[1] ; Munoz-Pineda, Eloy ^[1] ; Ribeiro, Sidney J. L. ^[2] ; Santos, Moliria V. ^{[2, 3]} ; Jarrendahl, Kenneth ^[4] ; Arwin, Hans ^[4]

Afiliação do(s) autor(es)

^[1] Cinvestav IPN, Unidad Queretaro, Libramiento Norponiente 2000, Queretaro 76230 - Mexico

^[2] Sao Paulo State Univ UNESP, Inst Chem, Araraquara, SP - Brazil

^[3] Univ Sao Paulo, Sao Carlos Inst Phys, POB 369, BR-13560970 Sao Carlos, SP - Brazil

^[4] Linkoping Univ, Dept Phys Chem & Biol, Mat Opt, SE-58183 Linkoping - Sweden

• Tipo de documento: Artigo Científico
• Fonte: Journal of Optics; v. 20, n. 2 FEB 2018.
• Citações Web of Science: 7

Resumo

Chiral nanocrystalline cellulose (NCC) free-standing films were prepared through slow evaporation of aqueous suspensions of cellulose nanocrystals in a nematic chiral liquid crystal phase. Mueller matrix (MM) spectroscopic ellipsometry is used to study the polarization and depolarization properties of the chiral films. In the reflection mode, the MM is similar to the matrices reported for the cuticle of some beetles reflecting near circular left-handed polarized light in the visible range. The polarization properties of light transmitted at normal incidence for different polarization states of incident light are discussed. By using a differential decomposition of the MM, the structural circular birefringence and dichroism of a NCC chiral film are evaluated. (AU)

• Processo FAPESP: 14/12424-2 - Propriedades ópticas de suspensões coloidais e filmes à base de nanoceluloses e lantanídeos
• Beneficiário: Moliria Vieira dos Santos
• Modalidade de apoio: Bolsas no Brasil - Doutorado