Depth-selective microscopic observation of a photomobile liquid crystal polymer under UV illumination
Name
c4cp04602a.pdf
Size
3.06 MB
Format
Adobe PDF
Checksum (MD5)
f88c1510332ea7eab5e527ebf26c2ca0
Author(s)
Katayama, Kenji
Choi, Youngwoon
Kang, Jeon Woong
Yaqoob, Zahid
So, Peter T. C.
Fujii, Tomomi
Kuwahara, Shota
Takado, Kiyohide
Ikeda, Tomiki
Date Issued
October 2014
Journal
Phys. Chem. Chem. Phys.
Publisher
Royal Society of Chemistry (RSC)
Citation
Katayama, Kenji, Youngwoon Choi, Jeon Woong Kang, Zahid Yaqoob, Peter T. C. So, Tomomi Fujii, Shota Kuwahara, Kiyohide Takado, and Tomiki Ikeda. “Depth-Selective Microscopic Observation of a Photomobile Liquid Crystal Polymer Under UV Illumination.” Phys. Chem. Chem. Phys. 16, no. 48 (2014): 27074–27077.
Version
Final published version
Abstract
By using the depth selective imaging method, we studied the UV induced change in a photomobile liquid crystalline polymer film. With 1 µm depth resolution, each slice inside the film was selectively observed. A network-like structure mixed with the ordered and disordered regions of molecules in the middle of the film, and a rubbed polymer layer at the bottom of the film were observed. In each slice of the film, the phase change induced by UV light was observed strongly dependent on the director direction, which indicates the ordering change of the liquid crystalline molecules in the director direction. It took several tens of seconds for the ordering change caused by the collaborative interaction between the molecules. Furthermore, it was suggested that the UV induced change travelled from the bottom layer to the middle layer on the micron order.
MIT Department
Massachusetts Institute of Technology. Department of Biological Engineering
Massachusetts Institute of Technology. Department of Chemistry
Massachusetts Institute of Technology. Department of Mechanical Engineering
Massachusetts Institute of Technology. Spectroscopy Laboratory
Terms of Use
Creative Commons Attribution Noncommercial 3.0 unported license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1039/C4CP04602A
