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Updated: Feb 10, 2026

Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor
Published on: August 30, 2012
Terahertz-driven polymerization of resists in nanoantennas
Woongkyu Park1, Youjin Lee1, Taehee Kang1
1Department of Physics and Astronomy and Center for Atom Scale Electromagnetism, Seoul National University, Seoul, 151-747, Korea.
Abstract:
Plasmon-mediated polymerization has been intensively studied for various applications including nanolithography, near-field mapping, and selective functionalization. However, these studies have been limited from the near-infrared to the ultraviolet regime. Here, we report a resist polymerization using intense terahertz pulses and various nanoantennas. The resist is polymerized near the nanoantennas, where giant field enhancement occurs. We experimentally show that the physical origin of the cross-linking is a terahertz electron emission from the nanoantenna, rather than multiphoton absorption. Our work extends nano-photochemistry into the terahertz frequencies.
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