Ju Hyeon Kim

Antifouling All‐Polymeric Microneedle Array for Long‐Term Wearable ECG Monitoring

Ju Hyeon Kim, Chuljin Hwang, J. H. Lee, Hang Chan Jo et autres

Abstract Cardiovascular disease demands reliable long‐term monitoring for early and accurate diagnosis. While conventional gel electrodes are commonly utilized for monitoring electrocardiogram (ECG) signals, they have limitations, such as dehydration‐induced signal degradation and motion artifacts, hindering their effectiveness for continuous long‐term use. …

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Structurally Engineered All-Polymeric Microneedle Sensor for Highly Sensitive and Real-Time Monitoring of Glucose in Interstitial Fluids

Ju Hyeon Kim, Chuljin Hwang, Dae Yu Kim

Diabetes mellitus (DM) is a chronic metabolic disorder characterized by persistent hyperglycemia with multiple clinical manifestations and complications, such as cardiovascular disease, kidney dysfunction, retinal impairment, and peripheral neuropathy. Continuous and minimally invasive glucose monitoring is essential for effective DM management. Microneedles …

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Highly water-resistant, biodegradable, and innocuous Poly(Lactide-co-Caprolactone) with a fluoroalkyl end group

Taeeun Kim, Ju Hyeon Kim, Jong Min Kim, Eun‐Ho Sohn

Poly(L-lactide-co-ε-caprolactone) (PLCL) garners significant attention as a biodegradable polymeric alternative to polycaprolactone owing to its enhanced mechanical properties. However, its practical application is hindered by critical drawbacks, including its high H 2 O absorption and susceptibility to organic contamination. To address these …

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Motion artifact–controlled micro–brain sensors between hair follicles for persistent augmented reality brain–computer interfaces

Hodam Kim, Ju Hyeon Kim, Yoon Jae Lee, Jimin Lee et autres

Modern brain–computer interfaces (BCI), utilizing electroencephalograms for bidirectional human–machine communication, face significant limitations from movement-vulnerable rigid sensors, inconsistent skin–electrode impedance, and bulky electronics, diminishing the system’s continuous use and portability. Here, we introduce motion artifact–controlled micro–brain sensors between hair strands, enabling ultralow …

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Mechanically Adaptable High‐Performance p(SBMA‐MMA) Copolymer Hydrogel with Iron (II/III) Perchlorate for Wearable Thermocell Applications (Adv. Funct. Mater. 12/2025)

Gilyong Shin, Ji Hyeon Baek, Ju Hyeon Kim, Ju Hwan Lee et autres

Quasi-Solid State Thermocells In article number 2412524, Taewoo Kim, Jei Gyeong Jeon, Tae June Kang, and co-workers present high-performance n-type quasi-solid state thermocells (QTECs) with a copolymer hydrogel that outperforms conventional p-type elements. This hydrogel contains hydrophilic zwitterionic SBMA for ion conduction …

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Highly Water-Resistant, Biodegradable, and Innocuous Poly(Lactide-Co-Caprolactone) with a Fluoroalkyl End Group

Taeeun Kim, Ju Hyeon Kim, Jong Min Kim, Eun‐Ho Sohn

Mechanically Adaptable High‐Performance p(SBMA‐MMA) Copolymer Hydrogel with Iron (II/III) Perchlorate for Wearable Thermocell Applications

Gilyong Shin, Ji Hyeon Baek, Ju Hyeon Kim, Ju Hwan Lee et autres

Abstract Quasi‐solid‐state thermocells (QTECs) show promise as a power source for wearable devices by converting body heat into electricity. While significant progress has been made with p‐type elements for QTECs, challenges remain with their n‐type counterparts. Here, a high‐performance n‐type QTEC element …

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Thermo-mechanical properties of shape-recoverable structural composites via vacuum-assisted resin transfer molding process and in-situ polymerization of poly (tert-butyl acrylate-co-acrylic acid) copolymer

Jei Gyeong Jeon, Byeong Jun So, Yuseung Choi, Yusu Han et autres

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Mechanically robust and uniform aramid nanofiber films fabricated using repeated spin-coating and protonation processes

Yuseung Choi, Gilyong Shin, Jei Gyeong Jeon, Ju Hyeon Kim et autres

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Current collectors of carbon fiber reinforced polymer for stackable energy storage composites

Yusu Han, Byeong Jun So, Hyeong Jun Kim, Ju Hyeon Kim et autres

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Bipolar Current Collectors of Carbon Fiber Reinforced Polymer for Laminates of Energy Storage Structural Composite

Yusu Han, Byeong Jun So, Hyeong Jun Kim, Jei Gyeong Jeon et autres

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Separation-Free Planar Interconnection for Thermo-electrochemical cells

Ju Hyeon Kim, Yusu Han, Gilyong Shin, Jei Gyeong Jeon et autres

A thermo-electrochemical cell (TEC) that converts low-grade waste thermal energy into electricity shows great sustainability for powering emerging wearable devices and Internet of Things (IoT) sensors. To meet any voltage requirement for practical applications, two types of interconnection methods, such as banded …

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