Nanoscale optical and structural characterisation of silk

Beilstein Journal of Nanotechnology

Arturas Vailionis^1^2^3^4^5^6^7^8^9^10^11¹  Jitraporn Vongsvivut^6²  Jing-Liang Li^7³  Mark J. Tobin^6⁴  Reo Honda^1⁵  Elena P. Ivanova^8⁶  Denver P. Linklater^5⁷  Adrian Cernescu^2⁸  Armandas Balčytis^5⁹  Meguya Ryu^1^1,10  Vygantas Mizeikis^9^1,11 

[1] Department of Physics, Kaunas University of Technology, Studentu street 50, LT-51368 Kaunas, Lithuania^4;Infrared Microspectroscopy Beamline, Australian Synchrotron, Clayton, Victoria 3168, Australia^6;Institute for Frontier Materials, Deakin University, Geelong, VIC 3220, Australia^7;Melbourne Center for Nanofabrication, Australian National Fabrication Facility, Clayton 3168, Melbourne, Australia more less^11;Neaspec GmbH, Bunsenstrasse 5, 82152 Martinsried, Germany^2;Research Institute of Electronics, Shizuoka University, Naka-ku, 3-5-3-1 Johoku, Hamamatsu, Shizuoka 4328561, Japan^9;School of Science, RMIT University, Melbourne, VIC 3001, Australia^8;Stanford Nano Shared Facilities, Stanford University, Stanford, CA 94305, USA^3;Swinburne University of Technology, John st., Hawthorn, 3122 Vic, Australia^5;Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan^1;Tokyo Tech World Research Hub Initiative (WRHI), School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8550, Japan^10

关键词: absorbance;    anisotropy;    retardance;    silk;   

DOI  :  10.3762/bjnano.10.93

学科分类：地球科学(综合)

来源: Beilstein - Institut zur Foerderung der Chemischen Wissenschaften

【 摘 要 】

The nanoscale composition of silk defining its unique properties via a hierarchial structural anisotropy needs to be analysed at the highest spatial resolution of tens of nanometers corresponding to the size of fibrils made of β-sheets, which are the crystalline building blocks of silk. Nanoscale optical and structural properties of silk have been measured from 100 nm thick longitudinal slices of silk fibers with ca. 10 nm resolution, the highest so far. Optical sub-wavelength resolution in hyperspectral mapping of absorbance and molecular orientation were carried out for comparison at IR wavelengths of 2–10 μm using synchrotron radiation. A reliable distinction of transmission changes by only 1–2% as the anisotropy of amide bands was obtained from nanometer-thin slices of silk.

【 授权许可】

CC BY