https://scholar.dgist.ac.kr/handle/20.500.11750/10496 2026-09-20T13:22:51Z https://scholar.dgist.ac.kr/handle/20.500.11750/60700 Title: 이방성 나노입자의 음각 전사 방법 및 이에 의해 제조된 유연 전극 Author(s): 김혜현; 양지웅; 최문기; 김기욱 Abstract: 본 발명의 일 양태에 따르면, 나노와이어 물질을 스탬프에 도포하는 단계(S100); 상기 스탬프를 패턴이 형성된 음각 트렌치에 접촉시키고 분리시켜, 상기 스탬프에 나노와이어 물질로 형성된 패턴을 전사하는 단계(S200); 및 상기 패턴이 전사된 스탬프를 기판에 접촉시키고 분리시켜, 상기 기판에 나노와이어 물질로 형성된 패턴을 전사하는 단계(S300)를 포함하는, 음각 전사 방법이 제공된다. https://scholar.dgist.ac.kr/handle/20.500.11750/60536 Title: Nanocrystal Geometry Governs Phase Transformation Pathways in Palladium Hydride Author(s): Lee, Daewon; Oaks-Leaf, Sam; Ma, Hyeonjong; He, Jianlong; Wang, Zhiqi; Shi, Yifeng; Ahn, Eonhyoung; Bustillo, Karen C.; Song, Chengyu; Ribet, Stephanie M.; Dhall, Rohan; Ophus, Colin; Asta, Mark; Yang, Jiwoong; Xia, Younan; Limmer, David T.; Zheng, Haimei Abstract: Pathways and structural dynamics of phase transformations impact performance of materials in energy and information storage technologies. Palladium hydride (PdHx ) nanocrystals are an ideal model system for studying solute-induced phase transformations, where elastic energy from lattice mismatch between alpha-PdH, and beta-PdH, phases is often considered a key to determining the transformation pathways. alpha/beta-PdHx interfacial elastic energy is affected by the confined geometry of a nanocrystal. However, how nanocrystal geometry influences phase trans-formation pathways is largely unknown. Using in situ liquid phase transmission electron microscopy, we directly visualize hydrogenation in Pd nanocrystals with two geometries, a nanocube and a hexagonal nanoplate. Both follow similar sequences of an initially curved nucleus, interface flattening, and reverse-stage nucleation; however, their evolving alpha/beta-PdHx interfaces exhibit geometry-dependent crystallographic alignments. In nanocubes, (100)-aligned configurations conform to static elastic energy ordering, representing a pathway that maintains a local mechanical equilibrium, whereas nanoplates display both (110) and (211)-aligned interfaces. Theoretical simulations show that geometry determines the accessibility of alternative phase transformation pathways as the system is driven far from equilibrium during hydrogenation. These findings identify geometry as a fundamental parameter for directing phase transformation pathways, offering design principles for accessing atypical configurations and improving properties of intercalation-based devices. 2026-04-30T15:00:00Z https://scholar.dgist.ac.kr/handle/20.500.11750/60475 Title: Broadband Circularly Polarized Light Detection via Spin-Selective Charge Transport in Quantum Dot Photodiodes Author(s): Kim, Minseo; Li, Shi; Lee, Kyunghoon; Ahn, Eonhyoung; Lee, Soyeon; Kim, Kiwook; Kim, Hang; Yu, Wookyung; Choi, Changsoon; Lim, Jung Ah; Hwang, Jeeseong; Kim, Dae-Hyeong; Yang, Jiwoong Abstract: Circularly polarized light (CPL) detection provides polarization-resolved information, enabling advanced applications in quantum technologies, bioimaging, secure communications, and multi-level optical data processing. However, conventional CPL photodetectors typically rely on intrinsically chiral absorbers, restricting operation to the UV-vis range and hindering extension into the near-infrared (NIR) and shortwave infrared (SWIR), which are critical for deep tissue imaging and low-visibility sensing. Here, we demonstrate broadband CPL detection with quantum dot (QD) photodiodes that exploit the chiral-induced spin selectivity effect in chiral-ZnO charge transport layers. Chiral ligand-functionalized ZnO electron transport layers selectively transmit spin-polarized charge carriers from QDs, enabling CPL-specific photocurrent generation even in spectral regions without intrinsic chiral absorption. Heavy-metal-free Cu-In-Se QD-photodiodes exhibit outstanding specific detectivity (D *) of 1.28 x 1012 Jones without external bias and broadband CPL detection (g Iph: similar to 0.17 at 260 nm and similar to 0.13 at 780 nm), while PbS QD-devices extend CPL detection across 250-1700 nm (UV-Vis-NIR-SWIR) with superior performance (D *: 1.45 x 1012 Jones). The chiral-transport-driven strategy offers fundamental insights into CPL photodetection and establishes a scalable and optically passive platform for broadband polarization-resolved optoelectronics. 2026-02-28T15:00:00Z https://scholar.dgist.ac.kr/handle/20.500.11750/60445 Title: 신축성 양자점 복합체 및 이의 제조 방법, 이를 포함하는 컬러 필터 Author(s): 양지웅; 송현화 Abstract: 본 발명은 신축성 양자점 복합체 및 이의 제조 방법, 이를 포함하는 컬러 필터를 개시한다. 본 발명은 리간드가 표면에 결합된 양자점; 및 상기 리간드와 가교 결합을 형성하는 탄성 중합체;를 포함하고, 상기 리간드는 말단에 탄소 이중 결합을 포함하는 것을 특징으로 한다.