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연구자

1-9 out of 1544 results

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연구실

1-9 out of 942 results

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저널논문

1-3 out of 133516 results

Bio-inspired design of pre-shaped SMA skeleton actuator for compact and tunable snapping INTERNATIONAL JOURNAL OF SMART AND NANO MATERIALS, v.17, no.1, 2026-12

Keywords soft robotics bio-inspired design bistability Shape memory alloys rapid actuation

Bio-inspired design of pre-shaped SMA skeleton actuator for compact and tunable snapping
Yang, Yang ; Roh, Jaewoo ; Zhang, Qian ; Ji, Wonhee ; Wang, Yongquan ; Oh, Il-Kwon

초록	Soft actuators that combine compactness, rapid response, and high output power are critical for advancing high-performance soft robotic systems. Although bistable architectures can amplify speed through elastic instability, their combination with functional materials often sacrifices compactness or lacks tunability. Here, we report a Venus flytrap-inspired shape memory alloy - embedded snapping actuator (SMA-ESA) that achieves compact and tunable actuation by structurally integrating pre-shaped SMA wires within a double-tilted elastomeric matrix. The SMA skeleton not only triggers snap-through via its thermal shape memory effect but also regulates performance. Combined experimental and finite element studies reveal that the actuation performance - characterized by energy storage capacity as well as the rate and efficiency of energy release - is tunable through both geometric parameters and input power. As a proof of concept, the SMA-ESA is demonstrated in a flytrap-inspired capture device that selectively responds to external stimuli. These results establish a generalizable strategy for embedding high-power-density materials into bistable soft structures, offering new opportunities for compact, responsive, and bio-inspired soft robotics.
서지사항	INTERNATIONAL JOURNAL OF SMART AND NANO MATERIALS, v.17, no.1, 2026-12
ISSN	1947-5411
주제분야	Materials Science
저자 키워드	soft robotics bio-inspired design bistability Shape memory alloys rapid actuation
DOI	10.1080/19475411.2026.2616101
자료유형	Article
기관	KAIST

Weakly supervised cloud detection combining spectral features and multi-scale deep network GISCIENCE & REMOTE SENSING, v.63, no.1, 2026-12

Keywords Cloud detection weakly supervised learning spectral feature Gaofen-1

Weakly supervised cloud detection combining spectral features and multi-scale deep network
Zhu, Shaocong ; Li, Zhiwei ; Li, Xinghua ; Shen, Huanfeng

초록	Clouds significantly affect the quality of optical satellite images, which seriously limits their precise application. Recently, deep learning has been widely applied to cloud detection and has achieved satisfactory results. However, the lack of distinctive features in thin clouds and the low quality of training samples limit the cloud detection accuracy of deep learning methods, leaving space for further improvements. In this paper, we propose a weakly supervised cloud detection method that combines spectral features and a multi-scale scene-level deep network (SpecMCD) to obtain highly accurate pixel-level cloud masks. The method first utilizes a progressive training framework with a multi-scale scene-level dataset to train the multi-scale scene-level cloud detection network. Pixel-level cloud probability maps are then obtained by combining the multi-scale probability maps and cloud thickness map based on the characteristics of clouds in dense-cloud and large cloud-area images. Finally, adaptive thresholds are generated based on the differentiated regions of the scene-level cloud masks at different scales and combined with distance-weighted optimization to obtain binary cloud masks. Two datasets (i.e. WDCD and GF1MS-WHU) comprising a total of 60 Gaofen-1 multispectral (GF1-MS) images, were used to verify the effectiveness of the proposed method. Compared to the other weakly supervised cloud detection methods such as WDCD and WSFNet, the F1-score of the proposed SpecMCD method shows an improvement of over 7.82%, highlighting the superiority and potential of the SpecMCD method for cloud detection under different cloud coverage conditions.
서지사항	GISCIENCE & REMOTE SENSING, v.63, no.1, 2026-12
ISSN	1548-1603
주제분야	Physical Geography Remote Sensing
저자 키워드	Cloud detection weakly supervised learning spectral feature Gaofen-1
DOI	10.1080/15481603.2026.2626022
자료유형	Article
기관	UNIST

Hydration-level-driven buffering effects on the compressibility of ion-exchanged mordenite SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS, v.27, no.1, 2026-12

Keywords Mordenite high-pressure comparative compressibility structural buffer effect pressure-induced hydration

Hydration-level-driven buffering effects on the compressibility of ion-exchanged mordenite
Lee, Soojin ; Lee, Hyunseung ; Kong, Jeongmin ; An, Dayeon ; Kim, Hyeonsu ; Kim, Pyosang ; Seoung, Donghoon ; Jeon, Taeyeol ; Armstrong, Katherine ; Kwon, Sunki ; Lee, Chung-Mo ; Hwang, Huijeong ; Lee, Yongmoon

초록	Understanding how large-pore zeolites respond to high-pressure conditions is essential for optimizing their structural stability and functional performance. In this study, we systematically investigated the compressibility and pressure-induced hydration (PIH) behavior of ion-exchanged mordenites using synchrotron X-ray powder diffraction under water-mediated conditions. The results reveal that the hydration level and spatial distribution of extra-framework cations (EFCs) at ambient conditions critically determine the initial number and arrangement of water molecules within the 12-membered ring (12MR) channels. Samples with weakly hydrated EFCs (e.g. Cs-MOR, Na-MOR) undergo a phase transition from Cmcm to Pbnm at about 1.6(1) GPa, because they fail to maintain the structural stability of the framework as compressed in water. In contrast, samples with EFCs strongly hydrated and uniformly distributed near the channel center (e.g. Sr-MOR, Eu-MOR) have lower compressibility, compared to cations aggregated near the channel wall (e.g. Pb-MOR, Cd-MOR). This study demonstrates that PIH acts as a structural buffer that stabilizes the framework by preventing pore collapse, thereby enhancing the compressibility in water. These findings underscore the critical role of the ambient EFC hydration state and PIH in governing the mechanical response of mordenite. The insights provide a basis for tailoring zeolite frameworks with optimized structural buffering effects for advanced industrial applications and geoscientific processes under extreme conditions.
서지사항	SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS, v.27, no.1, 2026-12
ISSN	1468-6996
주제분야	Materials Science
저자 키워드	Mordenite high-pressure comparative compressibility structural buffer effect pressure-induced hydration
DOI	10.1080/14686996.2025.2604928
자료유형	Article
기관	GIST

연구과제

1-3 out of 31710 results

그린 요소 생산으로 탄소 업사이클링을 위한 미세 구조 제어 촉매 개발 과학기술정보통신부, 박사과정생연구장려금지원, 김도훈, 2025-03 ~ 2025-08
Keywords Urea Electrochemistry Thermodynamic Eletrocatalyst Microenvironment

펨토초 순간 흡수 현미경을 활용한 양자점에서의 엑시톤 전달 원리 연구 교육부, 석사과정생연구장려금지원, 성주영, 2025-03 ~ 2025-08
Keywords Femtosecond transient absorption microscopy Quantum dots Charge carrier Spectroscopy

정신적 외상에 의한 치아이랑 단세포 이질성 변화와 스트레스 취약성에서 Lhfp 유전자의 병리적 역할 교육부, 석사과정생연구장려금지원, 2025-03 ~ 2025-08

특허

1-3 out of 24356 results

무인 항공기 감지를 위한 주파수 변조 연속파 레이더 시스템 망 FREQUENCY MODULATED CONTINUOUS WAVE CHAIN RADAR SYSTEM FOR DETECTING UNMANNED AERIAL VEHICLE, Registration Number: 10-2015-0078711, Registration Date: 2027-05-26, 대한민국

칼코겐화합물 분자잉크, 이를 이용한 박막태양전지용 광흡수층 및 이를 이용한 박막태양전지 CHALCOGENIDE MOLECULAR INK, LIGHT-ABSORBING LAYER FOR THIN-FILM SOLAR CELLS USING THE SAME, AND THIN-FILM SOLAR CELLS USING THE SAME, Registration Number: 10-2945942, Registration Date: 2026-03-26, 대한민국

칼코겐화합물 분자잉크, 이를 이용한 박막태양전지용 광흡수층 및 이를 이용한 박막태양전지

요약정보	본 발명은 칼코겐화합물 분자잉크, 이를 이용한 박막태양전지용 광흡수층 및 이를 이용한 태양전지에 대한 것이다. 보다 구체적으로, 본 발명에서는 박막태양전지의 광흡수층 제조에 사용되는 칼코겐화합물 분자잉크에 제2 금속염-칼코겐화합물 부가체를 포함하도록 하여, 광흡수층 제조 시 300℃ 이하의 저온에서 열처리하더라도 핀홀 생성이 방지되고, 균일한 결정입계를 형성할 수 있는 칼코겐화합물 분자잉크, 이를 이용한 박막태양전지용 광흡수층 및 이를 이용한 박막태양전지에 대한 것이다.	크게보기
타언어명	CHALCOGENIDE MOLECULAR INK, LIGHT-ABSORBING LAYER FOR THIN-FILM SOLAR CELLS USING THE SAME, AND THIN-FILM SOLAR CELLS USING THE SAME
출원번호	10-2024-0182239
출원일자	2024-12-10
등록번호	10-2945942
등록일자	2026-03-26
발명자	김강필, 우성호
출원/등록국가	대한민국
기관	DGIST

포톤카운팅 CT 기반의 물질 분리에서의 이웃간 우도를 활용한 노이즈 제거 장치 및 그 방법 Apparatus for neighborhood likelihood-based noise reduction in material decomposition using photon counting CT and method thereof, Registration Number: 10-2945367, Registration Date: 2026-03-25, 대한민국

포톤카운팅 CT 기반의 물질 분리에서의 이웃간 우도를 활용한 노이즈 제거 장치 및 그 방법

요약정보	본 발명은 포톤카운팅 CT 기반의 물질 분리에서의 이웃간 우도를 활용한 노이즈 제거 장치 및 그 방법에 관한 것이다. 본 발명에 따르면, 노이즈 제거 장치는 최대 우도(Maximum Likelihood)를 기반으로 물질 분리가 완료된 물질별 사이노그램 영상을 획득하는 영상 획득부, 상기 물질별 사이노그램 영상에 포함된 복수의 픽셀 중에서 노이즈 제거를 하고자 하는 특정 픽셀을 선택하고, 광자 계수 검출기(PCD)로부터 상기 특정 픽셀에 대응되는 기준 측정값을 획득하는 측정값 획득부, 상기 특정 픽셀을 중심으로 인접하는 제1 픽셀 및 제2 픽셀을 추출하고, 상기 획득한 기준 측정값을 이용하여 제1 픽셀 및 제2 픽셀에 대응되는 각각의 우도를 계산한 다음, 계산된 우도를 이용하여 특정 픽셀, 제1 픽셀 및 제2 픽셀에 각각의 가중치를 부여하는 분석부, 상기 산출된 가중치를 우도 기반의 양방향 필터(Likelihood-based Bilateral Filter, LBF)에 적용하여 노이즈를 제거하는 필터링부, 그리고 노이즈가 제거된 물질별 사이노그램 영상을 획득하고, 획득한 물질별 사이노그램 영상에 역투영(Filtered Backprojection, FBP) 알고리즘을 적용하여 최종 물질별 영상을 획득하는 제어부를 포함한다.	크게보기
타언어명	Apparatus for neighborhood likelihood-based noise reduction in material decomposition using photon counting CT and method thereof
출원번호	10-2023-0075552
출원일자	2023-06-13
등록번호	10-2945367
등록일자	2026-03-25
발명자	이옥균
출원/등록국가	대한민국
기관	DGIST

학술활동

1-3 out of 92067 results

Development of chemical probes for capturing protein arginine kinases 6th Asian Chemical Biology Conference 2023, 대한민국, 2230-82-01 ~ 2023-08-23

Development of chemical probes for capturing protein arginine kinases
Lee, Shin Hyeon ; Kee, Jung-Min

초록	Protein kinases play a critical role in controlling numerous cellular regulation pathways and signal transduction.1 Protein arginine phosphorylation, one of the relatively acid-labile N- phosphorylations, has been identified in numerous prokaryotic and eukaryotic proteins.2 The only known protein Arg kinase is McsB in Gram-positive bacteria, which was characterized in 2009.3 McsB is a heat-stress responsive kinase and phosphorylates Arg residues in aggregated cytosolic proteins so that phosphoarginine (pArg) acts as a protein degradation tag recognized by the ClpC/ClpP protease system. Recently, bacterial-PROTAC was developed using pArg and ClpC- binding cyclic peptide to induce the degradation of the target protein.4 In contrast, no eukaryotic or mycobacterial protein Arg kinase has been identified despite the abundance of pArg sites in those organisms, hindering further studies of Arg phosphorylation. Herein, we report our progress in developing mechanism-based chemical probes to label and capture the elusive Arg kinase.
학술대회명	6th Asian Chemical Biology Conference 2023
개최국	대한민국
개최장소
개최일	2023-08-22
저자 키워드
DOI
기관	UNIST

Domain Knowledge-Informed Functional Outlier Detection for Line Quality Control Systems 한국경영과학회-대한산업공학회 2022 춘계공동학술대회, 대한민국, 2206-01 ~ 2206-04

Domain Knowledge-Informed Functional Outlier Detection for Line Quality Control Systems
Mun, Jonghwan ; Yoon, Kwonin ; Kim, Gyeongjun ; Yoo, Jitae ; Kim, Heesun ; Ryu, Nayi ; Kim, Sungil

초록
학술대회명	한국경영과학회-대한산업공학회 2022 춘계공동학술대회
개최국	대한민국
개최장소
개최일	2022-06-03
저자 키워드
DOI
기관	UNIST

광 네트워크를 통한 실시간 미디어 전송을 위한 멀티캐스트 라우팅 기법에 관한 연구 SWCC2008, 대한민국, ? ~ ?

연구장비

1-3 out of 3557 results