Published TCIMAIL newest issue No.197
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Reusable Photosensitive Materials Showing Reversible Solid-Liquid Phase Transition
Advantage
Can be repeatedly liquefied from solid form by UV light and solidified from liquid form by visible light at room temperature
Application 1
Two glass slides containing this material adhere to each other by irradiation with 450nm light. After phase transition, irradiation with 365 nm light reliquifies the material and breaks adhesion.
These materials show a maximal adhesion value of 60 N·cm-2 (0.6 MPa). B4598 (R=C12H25) exhibits the highest adhesion value.
Application 2
These materials can be easily blown and washed-off, making them applicable to simple lithography processes.
- Y. Norikane, E. Uchida, S. Tanaka, K. Fujiwara, E. Koyama, R. Azumi, H. Akiyama, H. Kihara, M. Yoshida, Org. Lett. 2014, 16, 5012.
- Y. Norikane, National Institute of Advanced Industrial Science and Technology, PCT Int. Appl. WO2013081155, 2013.
Photoresponses of crystalline film in polarized light microscopy
*Each sample thickness is ca. 1 µm.
Photoresponse time dependent on film thickness and light intensity.
(provided by AIST)