Physicochemically modified high-resolution tin oxide thin film using soft imprinting

Dong Hyun Kim, Dong Wook Lee, Jin Young Oh, Ju Hwan Lee, Jonghoon Won, Jong In Jang, Hae Chang Jeong, Dae Shik Seo

Research output: Contribution to journalArticlepeer-review


We carried out nanoimprinting lithography on solution-processed tin oxide (SnO) film for use as a liquid crystal (LC) alignment layer, for which we used a parallel configuration. To transfer the nanostructures onto the SnO film, we conducted an experiment according to curing, from which fine nanostructures on the SnO film were obtained at a curing temperature of 200 °C. These acted as a guide for the arrangement of the LC molecules and induced geometric restriction which minimized elastic distortion energies, and so the LC molecules could be aligned in the direction of the nanostructures. The LC alignment state was investigated using polarized optical microscopy, and the pre-tilt angle was measured using a crystal rotation method. With high thermal endurance and drastically low power consumption, the nano patterned SnO was shown to be a promising candidate for LC applications. The nanopatterning process combined with nanoimprinting lithography and solution-processed inorganic materials exhibited the possibility of broadening the features of nanostructure-mounted applications, including LC devices.

Original languageEnglish
Pages (from-to)26696-26703
Number of pages8
JournalRSC Advances
Issue number41
Publication statusPublished - 2022 Sept 20

Bibliographical note

Funding Information:
This research was supported by the National Research Foundation of Korea (Grant No. 2020R1G1A1013604).

Publisher Copyright:
© 2022 The Royal Society of Chemistry.

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)


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