Korea Institute of Science and Technology

Center for Advanced Meta-materials

Minah Seo

Taikjin Lee

Young Min Jhon

Chulki Kim

Jaehun Kim

Seok Pil Lee

Jae Hun Kim

Yongsang Ryu

Jaebin Choi

Byunghyuck Moon

Sanghun Lee

Deok Ha Woo

Young In Jhon

ChaeHyun Lim

Sang-Hun Lee

Young Tae Byun

Sang Kyung Kim

Jinsoo Kim

Q-Han Park

Yong-Sang Ryu

Eui-Sang Yu

Beomju Shin

Deokha Woo

Joo-Hiuk Son

Youngmin Jhon

Jongho Choe

Hyun Seok Song

Hyunseok Song

Young In John

Hui Dong Yang

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

The present invention relates to SLAM (simultaneous localization and mapping) method and apparatus robust to a wireless environment change. A relative position of a moving node is estimated based on motion sensing of the moving node, the relative position of the moving node is corrected based on a comparison between a change pattern of at least one signal strength received over a plurality of time points and a signal strength distribution in a region in which the moving node is located, a route of the region is represented by using the relative position corrected as described above, and thereby, it is possible accurately estimate a position of the moving node and to create a map in which very accurate route information is recorded throughout the entire region at the same time, even if a wireless environment change such as signal interference between communication channels, expansion of an access point, and occurrence of a failure or an obstacle is made or a poor wireless environment such as lack of the number of access points occurs.

Slam method and apparatus robust to wireless environment change

One embodiment of the present invention provides an optical imaging apparatus using a metamaterial including a metamaterial array sensor which includes a plurality of unit cells made of a metamaterial and is positioned adjacent to an observation object, an imaging beam providing unit which provides an imaging beam toward the metamaterial array sensor, a control beam providing unit which controls a control beam provided to the unit cell to block the imaging beam incident on the unit cell, and an imaging beam measuring unit which measures a unit cell imaging beam transmission amount passing through the unit cell by measuring an imaging beam transmission amount of the metamaterial array sensor when the imaging beam passes through the unit cell and an imaging beam transmission amount of the metamaterial array sensor when the control beam is focused on the unit cell to block the imaging beam incident on the unit cell.

Optical imaging apparatus using metamaterial and optical imaging method using metamaterial

Provided are a saturable absorber including at least one material selected from a group of MXenes, and a Q-switching and mode-locked pulsed laser system using the same.

Saturable-absorber-based laser system

The present invention relates to a terahertz (THz) wave detecting sensor including a MXene material represented by the following Formula 1 as a sensing material:MX,&#x2003;&#x2003;[Formula 1] wherein, in Formula 1, M is at least one transition metal selected from early transition metal elements, X is at least one selected from C and N, and n is an integer selected from 1 to 3.

Terahertz (THZ) wave detecting sensor and THZ wave detecting device including the same

An apparatus for sensing biomolecules includes: a storage in which a solution containing a target material is received; a sensor configured to sense the target material; and a flow controller connected between the storage and the sensor to supply the solution to the sensor, wherein the flow controller controls a solution flow to supply the solution containing the target material and the solution containing no target material in an alternating manner. According to the apparatus for sensing biomolecules, the sensing device always achieves a sensing offset, and consequently, long-term continuous measurement is enabled, leading to the maximized usage efficiency of the sensor, and the value of quantitative measurement can be obtained with high precision.

Apparatus and method for sensing biomolecules which allows restoration of sensing offset

A system for adjusting transmittance, according to the present disclosure, includes a sensing device configured to amplify electromagnetic waves of a specific frequency and a squeegee configured to concentrate a target material inside a slot formed in the sensing device. A transmittance of the sensing device is adjusted according to concentration of the target material concentrated inside the slot by the squeegee.

System and method for adjusting transmittance for supersensitive optical sensor

The present disclosure discloses a double trigger type single pulse laser apparatus configured to suppress additional pulses to increase single pulse energy and improve stability of output as compared to a conventional single trigger type single pulse laser apparatus. According to the present invention, there is provided a single pulse laser apparatus including a resonator which has a first mirror, a second mirror, a gain medium, an electro-optic modulator and an acousto-optic modulator configured to respectively perform Q-switching and mode-locking, the single pulse laser apparatus including a first photodiode configured to measure a laser beam oscillated by the resonator.

Single pulse laser apparatus using double trigger

A metamaterial for an electromagnetic wave filter includes a substrate; and a film disposed on the substrate and having a set of slots arranged to form a rotationally symmetric pattern, which is patterned in an intaglio shape, or a set of structures arranged to form a rotationally symmetric pattern, which is patterned in an embossed shape, to control a transmission rate according to polarization of an electromagnetic wave incident on the film. The set of slots or the set of structures have an array angle that is determined such that the transmission rate and a reflectivity thereof have constant values according to the polarization of the electromagnetic wave incident on the film, and have a chloroplast molecular structure pattern in which the set of slots or the set of structures are arranged in pentagonal and hexagonal shapes.

Metamaterial for electromagnetic wave filter

Disclosed herein is a system for non-contact measurement of an optoelectronic property. The system includes a sensing element configured to amplify an electromagnetic wave having a specific frequency, a thin film disposed on the sensing element such that an optoelectronic property of the thin film is measured, and an optoelectronic property measuring server configured to extract a physical property of the thin film based on the optoelectronic property of the thin film obtained when the electromagnetic wave amplified by the sensing element passes through the thin film.

System and method for non-contact measurement of optoelectronic properties of thin film

Disclosed is a system for observing the conformational change in a protein, which includes a sensing element which is configured to amplify an electromagnetic wave of a specific frequency; a light irradiation unit which is configured to irradiate a photoreceptor protein solution coated on the sensing element with light; an electromagnetic wave irradiation unit which allows an electromagnetic wave to be incident in a direction perpendicular to the bottom surface of the sensing element; a detection unit which is configured to detect an electromagnetic wave reflected from the bottom surface of the sensing element; and a control unit which is configured to observe the conformational change in the photoreceptor protein based on the detected electromagnetic wave.

System for observing conformational change in protein

Disclosed herein is a single pulse laser apparatus which includes a first mirror and a second mirror disposed at both ends of the single pulse laser apparatus and having reflectivities of a predetermined level or more; a gain medium rotated at a predetermined angle and configured to oscillate a laser beam in a manual mode-locking state; a linear polarizer configured to output a beam having a specific polarized component of the oscillated laser beam; an etalon configured to adjust a pulse width of the oscillated laser beam; and an electro-optic modulator configured to perform Q-switching and single pulse switching.

Single pulse laser apparatus

Disclosed is an apparatus for graphene wet transfer, which includes: a reservoir body having at least two reservoirs; a barrier structure located on the reservoir and having at least one separated space formed by barriers; and a substrate frame located below the barrier structure and having at least one substrate accommodation groove for accommodating a target substrate to which graphene is transferred. Here, each reservoir may be filled with a solution for a wet transfer process, and the graphene may be separately located in each separated space in a floating state in the solution.

Growing community of inventors

Seoul, South Korea

Minah Seo