https://scholar.dgist.ac.kr/handle/20.500.11750/10136 2026-11-05T05:40:14Z https://scholar.dgist.ac.kr/handle/20.500.11750/61053 Title: 계면 제어 물질 및 이를 포함하는 태양전지 Author(s): 조효정; 김대환 https://scholar.dgist.ac.kr/handle/20.500.11750/61030 Title: 어드미턴스 분광 특성 추출 프로그램 Author(s): 양기정; 손대호; 김욱현; 김대환 https://scholar.dgist.ac.kr/handle/20.500.11750/61006 Title: Electrodeposited Prussian Blue analogs on carbon nanofiber for electrochemical cesium removal: Transition-metal-dependent intercalation behavior Author(s): Kim, Minsun; Lee, Huisu; Park, Hyunwoong; Kim, Soonhyun Abstract: The development of regenerable electrochemical systems for radioactive cesium removal requires both mechanistic understanding and material optimization. Although Prussian Blue analogs (PBAs) are promising candidates for Cs+ adsorption, the transition-metal-dependent factors governing electrochemical Cs+ intercalation in binder-free electrode architectures remain insufficiently clarified. Herein, binder-free NiFe-, CoFe-, MnFe-, and CuFe-carbon nanofiber (CNF) composites were prepared using metal-specific electrodeposition strategies and subsequently evaluated under the same electrochemical adsorption/desorption conditions to compare their Cs+ uptake and release behavior. Distinct transition-metal-dependent limiting regimes were identified: CoFe-CNF exhibited morphology-limited behavior owing to oversized crystal growth, MnFe-CNF showed a reversibility-limited performance attributed to Jahn-Teller distortion-induced lattice strain, and NiFe-CNF was constrained by achievable deposition loading. CuFe-CNF emerged as a balanced system maintaining controlled morphology, sufficient loading, and stable redox reversibility, delivering maximum Langmuir capacities of 68.6 mu mol center dot cm-2 (electrochemical adsorption, EA) and 85.3 mu mol center dot cm-2 (electrochemical desorption, ED), stable cycling, and favorable separation factors (RL = 0.035-0.423). XPS analysis further revealed an asymmetric redox mechanism, wherein Cu2+/Cu+ reduction drives Cs+ intercalation during adsorption and Fe2+/Fe3+ oxidation governs Cs+ expulsion during desorption, with Fe2+/Fe3+ couple becoming increasingly dominant over repeated cycling. Classification of morphology-, loading-, and reversibility-limited regimes provides a rational design framework, highlighting CuFe-CNF as an optimized platform for sustainable electrochemical cesium remediation. 2026-09-30T15:00:00Z https://scholar.dgist.ac.kr/handle/20.500.11750/61005 Title: Motion-Driven Self-Visualizing Soft Robots Enabled by Mechanoluminescent Tubular Fibers Author(s): Lee, Minseok; Song, Seongkyu; Jeong, Soon Moon Abstract: Motion-responsive optical sensing that directly visualizes deformation without external electronics is highly desirable yet remains difficult to implement in pneumatic soft robotic systems. In particular, integrating wired or battery-powered sensors into soft robots composed of low-modulus elastomers is challenging due to the mechanical mismatch between conventional sensors and highly compliant actuators. Here, we present a compliance-matched tubular mechanoluminescent (ML) fiber that enables battery-free visualization of pneumatic soft robot motion through deformation-induced light emission. The ML fiber is fabricated by encapsulating a self-recoverable ZnS:Cu-PDMS composite within an elastic silicone tube, forming a mechanically adaptive architecture that preserves large stretchability while maintaining stable ML responses under repeated deformation. Owing to the intrinsic compliance of the tubular structure, the fiber sustains tensile strains exceeding 200%. When integrated into a pneumatically driven soft robot in a woven network architecture, the ML fibers generate deformation-associated light emission from regions undergoing actuation, enabling qualitative visual monitoring of robotic motion without wiring, signal-processing circuits, or external power sources for sensing. This compliance-engineered ML fiber architecture provides a scalable strategy for embedding self-powered optical sensing into highly deformable soft systems and offers a versatile platform for self-visualizing soft robotics, wearable motion monitoring, and artificial skin interfaces. 2026-08-31T15:00:00Z