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Silk: Optical Properties over 12.6 Octaves THz-IR-Visible-UV Range.
Balcytis, Armandas; Ryu, Meguya; Wang, Xuewen; Novelli, Fabio; Seniutinas, Gediminas; Du, Shan; Wang, Xungai; Li, Jingliang; Davis, Jeffrey; Appadoo, Dominique; Morikawa, Junko; Juodkazis, Saulius.
Afiliación
  • Balcytis A; School of Science, Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, Hawthorn, VIC 3122, Australia. abalcytis@swin.edu.au.
  • Ryu M; Department of Laser Technologies, Center for Physical Sciences and Technology, Savanoriu Ave. 231, LT-02300 Vilnius, Lithuania. abalcytis@swin.edu.au.
  • Wang X; These authors contributed equally to this work.. abalcytis@swin.edu.au.
  • Novelli F; Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan. ryu.m.ab@m.titech.ac.jp.
  • Seniutinas G; These authors contributed equally to this work.. ryu.m.ab@m.titech.ac.jp.
  • Du S; School of Science, Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, Hawthorn, VIC 3122, Australia. xuewenwang@swin.edu.au.
  • Wang X; These authors contributed equally to this work.. xuewenwang@swin.edu.au.
  • Li J; School of Science, Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, Hawthorn, VIC 3122, Australia. fabio.novelli@ruhr-uni-bochum.de.
  • Davis J; Current address: Ruhr-University Bochum, 44801 Bochum, Germany.. fabio.novelli@ruhr-uni-bochum.de.
  • Appadoo D; School of Science, Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, Hawthorn, VIC 3122, Australia. gdseniutinas@gmail.com.
  • Morikawa J; Current address: Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland.. gdseniutinas@gmail.com.
  • Juodkazis S; Australian Future Fibres Research and Innovation Centre, Institute for Frontier Materials, Deakin University, Geelong, VIC 3220, Australia. shand@deakin.edu.au.
Materials (Basel) ; 10(4)2017 Mar 28.
Article en En | MEDLINE | ID: mdl-28772716
Domestic (Bombyx mori) and wild (Antheraea pernyi) silk fibers were characterised over a wide spectral range from THz 8 cm -1 ( λ = 1.25 mm, f = 0.24 THz) to deep-UV 50 × 10 3 cm - 1 ( λ = 200 nm, f = 1500 THz) wavelengths or over a 12.6 octave frequency range. Spectral features at ß-sheet, α-coil and amorphous fibroin were analysed at different spectral ranges. Single fiber cross sections at mid-IR were used to determine spatial distribution of different silk constituents and revealed an α-coil rich core and more broadly spread ß-sheets in natural silk fibers obtained from wild Antheraea pernyi moths. Low energy T-ray bands at 243 and 229 cm -1 were observed in crystalline fibers of domestic and wild silk fibers, respectively, and showed no spectral shift down to 78 K temperature. A distinct 20±4 cm-1 band was observed in the crystalline Antheraea pernyi silk fibers. Systematic analysis and assignment of the observed spectral bands is presented. Water solubility and biodegradability of silk, required for bio-medical and sensor applications, are directly inferred from specific spectral bands.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Materials (Basel) Año: 2017 Tipo del documento: Article País de afiliación: Australia Pais de publicación: Suiza
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Materials (Basel) Año: 2017 Tipo del documento: Article País de afiliación: Australia Pais de publicación: Suiza