Korea Institute of Science and Technology

Eui-Sang Yu

Yong-Sang Ryu

Jae Hun Kim

Taehyun Kim

Jongsu Lee

Chulki Kim

Jiwon Kim

Young Min Jhon

Taikjin Lee

Sin-Doo Lee

Sun Mi Lee

Minah Seo

Gyeongtaek Gong

Ja Kyong Ko

Yusin Pak

Hyun Seok Song

Sang Moon Kim

Eui Tae Jeong

A method for detecting a nanoplastic using a vertical nanogap electrode and a Raman spectroscopic device, includes, in a state where a vertical nanogap electrode is provided in aquatic environment in which a nanoplastic exists, forming a nanoplastic aggregate having a size of 1 μm or more by applying an alternating voltage of a specific frequency to the vertical nanogap electrode, and collecting and concentrating the nanoplastic in a collector of the vertical nanogap electrode, and performing Raman spectroscopy on the nanoplastic aggregate concentrated in the collector of the vertical nanogap electrode to detect the nanoplastic constituting the nanoplastic aggregate.

Method for detecting nanoplastics in ecosystem using vertical nanogap electrode and raman spectroscopy

The disclosure relates to a hydrogen sensing device capable of visually detecting the presence of hydrogen through a color change according to a water-forming reaction by inducing the water-forming reaction between hydrogen and oxygen at the interface between a lower metal layer and a dielectric layer under a structure in which a lower metal layer, a dielectric layer, and an upper metal layer are sequentially stacked, and visually sensing the color change caused by the generated water.

Hydrogen sensing device that can visually detect the presence of hydrogen through color change according to the water formation reaction

An air conditioning apparatus is provided. The air conditioning apparatus includes: a filter configured to have a first conductor layer, an insulating layer having a thickness in the range of 5 nm to 1000 nm, and a second conductor layer which are sequentially stacked, and include a plurality of holes penetrating through the first conductor layer, the insulating layer, and the second conductor layer; a fan assembly configured to suck air from the outside and provide the sucked air to the filter; a power supply device configured to provide alternating current power between the first conductor layer and the second conductor layer; and a processor configured to control the power supply device to selectively vary a frequency or a voltage magnitude of the alternating current power provided to the filter.

Filter for trapping particulate matter including vertical nano-gap electrode with plurality of holes and air conditioning apparatus having the same

Provided is a high efficiency and high sensitivity particle capture type terahertz sensing system. The particle capture type terahertz sensing system includes a sensing substrate to capture particles, and a terahertz sensor to emit terahertz electromagnetic waves to the sensing substrate to sense the particles, wherein the sensing substrate includes a base substrate and a particle capture structure layer formed on the base substrate, the particle capture structure layer includes a plurality of slits for focusing the terahertz electromagnetic waves, the particle capture structure layer captures the particles in the plurality of slits using dielectrophoresis, and an area in which the terahertz electromagnetic waves converge to the plurality of slits matches an area in which the particles are captured in the plurality of slits through the dielectrophoresis.

High efficiency and high sensitivity particle capture type terahertz sensing system

Disclosed herein are a screening method of high-efficiency biofuel-producing strains by a dielectrophoretic method using vertical nano-gap electrodes and a producing method of biofuel from the screened strains.

Screening method for high-efficiency biofuel-producing strains by dielectrophoretic method using vertical nano-gap electrodes

A method for manufacturing an optical sensor includes forming a reflective metal layer on a substrate, forming an insulator layer on the reflective metal layer, inducing self-assembly of a metal nanostructure layer on the insulator layer, and selectively etching the insulator layer through a reactive ion etching process to form a plurality of pillars and a plurality of spaces defined by the plurality of pillars. The method for manufacturing a plasmonic optical sensor according to this embodiment facilitates the formation of nanostructures difficult to pattern and form on the large scale at a low cost, and provides a plasmonic optical sensor with repeatability.

Optical sensor, manufacturing method thereof, and fluid analysis method using the same

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Seoul, South Korea

Eui-Sang Yu