Liquid crystal terahertz phase shifters with functional indium-tin-oxide nanostructures for biasing and alignment

Chan Shan Yang, Tsung Ta Tang, Ru Pin Pan, Peichen Yu, Ci Ling Pan*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

Indium Tin Oxide (ITO) nanowhiskers (NWhs) obliquely evaporated by electron-beam glancing-angle deposition can serve simultaneously as transparent electrodes and alignment layer for liquid crystal (LC) devices in the terahertz (THz) frequency range. To demonstrate, we constructed a THz LC phase shifter with ITO NWhs. Phase shift exceeding π/2 at 1.0 THz was achieved in a ∼517 μm-thick cell. The phase shifter exhibits high transmittance (∼78%). The driving voltage required for quarter-wave operation is as low as 5.66 V (rms), compatible with complementary metal-oxide-semiconductor (CMOS) and thin-film transistor (TFT) technologies.

Original languageEnglish
Article number141106
JournalApplied Physics Letters
Volume104
Issue number14
DOIs
StatePublished - 7 Apr 2014

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