Nanoscale chemical mapping of laser-solubilized silk Ryu, Meguya, Kobayashi, Hanae, Balčytis, Armandas, Wang, Xuewen, Vongsvivut, Jitraporn, Li, Jingliang, Urayama, Norio, Mizeikis, Vygantas, Tobin, Mark, Juodkazis, Saulius and Morikawa, Junko 2017, Nanoscale chemical mapping of laser-solubilized silk, Materials research express, vol. 4, no. 11, pp. 1-6, doi: 10.1088/2053-1591/aa98a9. Attached Files Name Description MIMEType Size Downloads Title Nanoscale chemical mapping of laser-solubilized silk Author(s) Ryu, Meguya Kobayashi, Hanae Balčytis, Armandas Wang, Xuewen Vongsvivut, Jitraporn Li, Jingliang orcid.org/0000-0003-0709-2246 Urayama, Norio Mizeikis, Vygantas Tobin, Mark Juodkazis, Saulius Morikawa, Junko Journal name Materials research express Volume number 4 Issue number 11 Article ID 115028 Start page 1 End page 6 Total pages 6 Publisher IOP Publishing Place of publication Bristol, Eng. Publication date 2017-11 ISSN 2053-1591 Keyword(s) silk FT-IR synchrotron radiation science & technology technology materials science Summary A water soluble amorphous form of silk was made by ultra-short laser pulse irradiation and detected by nanoscale IR mapping. An optical absorption-induced nanoscale surface expansion was probed to yield the spectral response of silk at IR molecular fingerprinting wavelengths with a high ∼ 20 nm spatial resolution defined by the tip of the probe. Silk microtomed sections of 1-5 μm in thickness were prepared for nanoscale spectroscopy and a laser was used to induce amorphisation. Comparison of silk absorbance measurements carried out by table-top and synchrotron Fourier transform IR spectroscopy proved that chemical imaging obtained at high spatial resolution and specificity (able to discriminate between amorphous and crystalline silk) is reliably achieved by nanoscale IR. Differences in absorbance and spectral line-shapes of the bands are related to the different sensitivity of the applied methods to real and imaginary parts of permittivity. A nanoscale material characterization by combining synchrotron IR radiation and nano-IR is discussed. Language eng DOI 10.1088/2053-1591/aa98a9 Field of Research 090403 Chemical Engineering Design HERDC Research category C1 Refereed article in a scholarly journal ERA Research output type C Journal article Grant ID JSPS KAKENHI Grant No.16K06768 Swinburne’s startup grant for Nanotechnology facility and partial support via ARC Discovery DP130101205 and DP170100131 grants beamtime project No. 11119 at the Australian Synchrotron IRM Beamline Window-on-Photonics R&D, Ltd. is acknowledged for joint development grant and laser fabrication facility Copyright notice ©2017, IOP Publishing Ltd Persistent URL http://hdl.handle.net/10536/DRO/DU:30110876 Document type: Journal Article Collections: Institute for Frontier Materials GTP Research Related Links Link Description Connect to published version Go to link with your DU access privileges     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Versions Version Filter Type Wed, 11 Jul 2018, 11:57:08 EST Thu, 12 Jul 2018, 05:01:04 EST Thu, 12 Jul 2018, 06:05:08 EST Fri, 27 Jul 2018, 10:01:45 EST Sat, 28 Jul 2018, 06:17:07 EST Mon, 06 Aug 2018, 13:52:51 EST Mon, 06 Aug 2018, 13:55:28 EST Mon, 06 Aug 2018, 13:56:25 EST Filtered Full Citation counts:   Cited 13 times in TR Web of Science Cited 14 times in Scopus Search Google Scholar Access Statistics: 215 Abstract Views, 2 File Downloads  -  Detailed Statistics Created: Wed, 11 Jul 2018, 11:57:08 EST

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