https://scholar.dgist.ac.kr/handle/20.500.11750/27 2026-04-28T18:19:31Z https://scholar.dgist.ac.kr/handle/20.500.11750/60311 Title: Dynamic coordination bonding in metal-organic frameworks: fundamental concepts and emerging applications Author(s): Park, Sun Ho; Kim, Byong June; Choi, Jaehyeuk; Kim, Inhoo; Jeong, Nak Cheon Abstract: Metal-organic frameworks (MOFs) have long been regarded as rigid crystalline solids with static coordination bonds. Mounting spectroscopic and crystallographic evidence, however, shows that these bonds are dynamic, undergoing transient dissociation and reassociation without loss of framework integrity. This recognition has catalyzed the concept of dynamic coordination bonding, offering a fresh perspective on MOF chemistry and function. In this review, we define this concept and organize it into two complementary modes: (i) metal-guest dynamics at open metal sites and (ii) metal-linker dynamics within the lattice. We combine experimental and theoretical evidence demonstrating that bond dynamics underpin key functions-including non-thermal activation, gas adsorption, heterogeneous catalysis, and the formation of liquid and glassy MOFs. By integrating mechanistic insight with application-level performance, we establish dynamic bonding as a central design principle for MOFs and outline practical levers-metal identity, linker electronics and sterics, pore architecture, and crystal dimension-to tune equilibrium populations. Framed in this way, MOFs emerge not as static scaffolds but as responsive coordination networks, enabling next-generation advances in catalysis, gas storage and separations, and energy-relevant processes. 2026-02-28T15:00:00Z https://scholar.dgist.ac.kr/handle/20.500.11750/60253 Title: 이중층 그래핀 구조체 및 이를 제작하는 방법 Author(s): 김영욱; 조길영; 김도훈 https://scholar.dgist.ac.kr/handle/20.500.11750/60240 Title: 엔코더용 자기 센서, 평면 홀 자기저항 브릿지 센서 및 엔코더 Author(s): 김진우; 전태형; 전창엽; 임병화; 김철기 Abstract: 본 발명의 실시예는 자기스케일에 대향하는 면 상에서 각각의 제1 내지 제4 자기저항소자가 이동 또는 회전되어 교차형 폐루프를 형성하고, 등가회로는 휘트스톤 브릿지의 대칭형 폐루프를 형성하도록 배치되어, 외부 자기장에 의한 이방성자기저항은 상쇄시키고, 평면 홀 자기저항은 보강하여 외주 자기장을 검출하는 자기센서, 평면 홀 자기저항 브릿지 센서 및 상기 평면홀 자기저항 브릿지 센서를 포함하는 엔코더를 제공한다. https://scholar.dgist.ac.kr/handle/20.500.11750/60225 Title: Ferroelectric switching of interfacial dipoles in α-RuCl3/graphene heterostructure Author(s): Kim, Soyun; Yun, Jo Hyun; Choe, Junsik; Kim, Dohun; Taniguchi, Takashi; Watanabe, Kenji; Falson, Joseph; Kim, Jun Sung; Jin, Kyung-Hwan; Cho, Gil Young; Kim, Youngwook Abstract: We demonstrate electrically switchable, non-volatile dipoles in graphene/thin hBN/α-RuCl3 heterostructures, stabilized purely by interfacial charge transfer across an atomically thin dielectric barrier. This mechanism requires no sliding or twisting to explicitly break inversion symmetry and produces robust ferroelectric-like hysteresis loops that emerge prominently near 30 K. Systematic measurements under strong in-plane and out-of-plane magnetic fields reveal negligible effects on the hysteresis characteristics, confirming that the primary mechanism driving the dipole switching is electrostatic. Our findings establish a distinct and robust route to electrically tunable ferroelectric phenomena in van der Waals heterostructures, opening opportunities to explore the interplay between interfacial charge transfer and temperature-tuned barrier crossing of dipole states at the atomic scale. 2025-12-31T15:00:00Z