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ACS APPLIED ENGINEERING MATERIALS 2025年第4期3卷 938-946页

作者： Kim, Young Nam Jeong, Hyunsung Yoon, Somi Choi, Yong-Seok Shim, Jae Hun Zha, Jun-Wei Wie, Jeong Jae Kim, Jung Kyu Jung, Yong Chae Korea Inst Sci & Technol KIST RAMP Convergence Res Ctr Jeonbuk 55324 Wanju Gun South Korea Sungkyunkwan Univ SKKU Sch Chem Engn Suwon 16419 South Korea Hanyang Univ Dept Organ & Nano Engn Seoul 04763 South Korea Kukdo Chem Co Seoul 08558 South Korea North China Elect Power Univ Sch Elect & Elect Engn State Key Lab Alternate Elect Power Syst Renewable Beijing 102206 Peoples R China Hanyang Univ Human Tech Convergence Program Seoul 04763 South Korea SUNY Coll Environm Sci & Forestry Dept Chem Engn Syracuse NY 13210 USA

The increasing demand for high power due to urbanization requires a stable supply of electrical energy and the development of insulating composites with high heat resistance and insulating properties. Epoxy is a typical insulating polymer used in various industries, especially as a resin for gas-insulated switchgear (GIS) spacers. In this study, a hybrid fusion microfillers (HMFFs) with a core-shell structure were synthesized by the mechano-fusion method with zinc oxide (ZnO) and alumina (Al2O3) fillers to improve the mechanical strength and dielectric strength of epoxy. By combining heterogeneous particles into a single particle, HMFFs developed a structure of insulating particles with improved heat resistance and insulating properties. The epoxy insulating composite with HMFFs induced the dispersion of energy flow, which improved the durability of the resin, as well as the mechanical strength and dielectric strength. In addition, the insulation composite with stable tensile and flexural strength properties even at high temperatures of 80 degrees C suggests that it can be used as the main insulating composite for GIS to ensure stable transmission of high-current electric energy.

关键词： dry particle coating insulation heat resistant epoxy gas insulated switchgear

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Highly Electroconductive and Mechanically Strong Ti₃C₂T_x MXene Fibers Using a Deformable MXene Gel

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ACS NANO 2021年第2期15卷 3320-3329页

作者： Shin, Hwansoo Eom, Wonsik Lee, Ki Hyun Jeong, Woojae Kang, Dong Jun Han, Tae Hee Hanyang Univ Dept Organ & Nano Engn Seoul 04763 South Korea Hanyang Univ Human Tech Convergence Program Seoul 04763 South Korea Hanyang Univ Human Tech Convergence Program Dept Organ & Nano Engn Seoul 04763 South Korea Hanyang Univ Res Inst Ind Sci Seoul 04763 South Korea

Self-assembly of two-dimensional MXene sheets is used in various fields to create multiscale structures due to their electrical, mechanical, and chemical properties. In principle, MXene nanosheets are assembled by molecular interactions, including hydrogen bonds, electrostatic interactions, and van der Waals forces. This study describes how MXene colloid nanosheets can form self-supporting MXene hydrogels. Three-dimensional network structures of MXene gels are strengthened by reinforced electrostatic interactions between nanosheets. Stable gel networks are beneficial for fabricating highly aligned fibers because MXene gel can endure structural deformation. During wet spinning of highly concentrated MXene colloids in a coagulation bath, MXene sheets can be transformed into perfectly aligned fibers under a mechanical drawing force. Oriented MXene fibers exhibit a 1.5-fold increase in electrical conductivity (12 504 S cm(-1)) and Young's modulus (122 GPa) compared with other fibers. The oriented MXene fibers are expected to have widespread applications, including electrical wiring and signal transmission.

关键词： Ti3C2Tx MXene deformable gel fibers wet spinning orientation

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Sub-Second Joule-Heated RuO2-Decorated Nitrogen- and Sulfur-Doped Graphene Fibers for Flexible Fiber-type Supercapacitors

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ACS APPLIED MATERIALS & INTERFACES 2022年第26期14卷 29867-29877页

作者： Noh, Sung Hyun Lee, Hak Bong Lee, Kyong Sub Lee, Hyeonhoo Han, Tae Hee Hanyang Univ Dept Organ & Nano Engn Seoul 04763 South Korea Hanyang Univ Human Tech Convergence Program Seoul 04763 South Korea

Graphene-based fiber-shaped supercapacitors (FSSCs) have received considerable attention as potential wearable energy storage devices owing to their simple operating mechanism, flexibility, and long-term stability. To date, energy storage capacities of supercapacitors have been significantly improved via strategies such as heteroatom doping and the incorporation of pseudocapacitive metal oxides. Herein, we develop a novel and scalable direct-hybridization method that combines heteroatom doping and metal oxide hybridization for the fabrication of high-performance FSSCs. Using porous and highly conductive nitrogen and sulfur co-doped graphene fibers (NS-GFs) as self-heating units, we successfully convert ruthenium hydroxide anchored to the surface into ruthenium oxide nanoparticles after programmed sub-second electrothermal annealing without structural damage of the fibers. The resulting fibers show an increased gravimetric capacitance of 68.88 F g(-1) compared to that of the pristine NS-GF (8.32 F g(-1)), excellent cyclic stability maintaining 96.67% of the initial capacitance after 20 000 continuous charging/discharging cycles, and good mechanical flexibility. The findings of this work advocate a successful Joule heating strategy for preparing high-performance graphene-based metal oxide hybrid FSSCs for use in energy storage applications.

关键词： Joule-heating graphene fibers fiber-type supercapacitors heteroatomic doping in situ hybridization

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Understanding Metaverse Consumers Through Escapism Motives: Focusing on Roblox and Zepeto

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INTERNATIONAL JOURNAL OF human-COMPUTER INTERACTION 2024年第21期40卷 6709-6721页

作者： Hur, Hee Jin Baek, Eunsoo Konkuk Univ Dept Fash Design Glocal Campus Chungju South Korea Hanyang Univ Dept Clothing & Text Human Tech Convergence Program Seoul South Korea

This study investigates how users' escapism motives and perceptions of technology influence their intentions to continue using metaverse platforms. To this end, a framework based on the technology acceptance model (TAM) is used to explore how the perceptions of two benefits-enjoyment and usefulness-as antecedents of continuance intention, are influenced by an individual's escape motivations (self-suppression and self-expansion) and technological characteristics. A total of 248 responses, collected via an online survey company, were analyzed using structural equation modeling. The results emphasize the importance of both hedonic and utilitarian benefits in sustaining metaverse users. Moreover, users' self-expansion motive has a positive effect on continuance intentions, while self-suppression negatively impacts continuance intentions. The differences between platforms (Roblox and Zepeto) further explored the relationships of the variables in the model. This study enriches the literature on escapism and TAM and provides valuable insights for practitioners by highlighting the impact of users' motives on their intentions to continue using metaverse platforms.

关键词： Metaverse platform TAM escapism motives self-suppression self-expansion Zepeto Roblox

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Near-infrared photodetection in tin halide perovskites via compositional engineering

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Materials Science and Engineering R: Reports 2025年 165卷

作者： Park, Hansol Lee, Cheong Beom Lim, Seon-Jeong Kim, Hakjun Kim, Kyeounghak Park, Hui Joon Department of Organic and Nano Engineering Hanyang University Seoul04763 Korea Republic of Human-Tech Convergence Program Hanyang University Seoul04763 Korea Republic of Department of Chemistry Hanyang University Seoul04763 Korea Republic of Samsung Advanced Institute of Technology Samsung Electronics Suwon16678 Korea Republic of Department of Chemical Engineering Hanyang University Seoul04763 Korea Republic of Department of Semiconductor Engineering Hanyang University Seoul04763 Korea Republic of Institute of Nano Science Technology Hanyang University Seoul04763 Korea Republic of

Tin (Sn) halide perovskites, with an optical bandgap below 1.4 eV, are promising for near-infrared photodetectors (NIR-PDs). However, their inherent instability due to Sn2+ oxidation and sensitivity to processing often results in non-uniform films with low crystallinity. Most research has focused on formamidinium tin triiodide (FASnI3), while methylammonium tin triiodide (MASnI3), with an optical bandgap of 1.2–1.3 eV and light absorption in the 300–1100 nm range, has been less explored due to its instability. Here, we demonstrate that substituting A-site cations (Cs and Rb) and X-site halides (Cl) in MASnI3 significantly enhances its stability, improving crystallinity and reducing trap density. PD devices with modified MASnI3 exhibit enhanced photo-response across the visible to NIR region, achieving specific detectivity over 1.7 × 1012 Jones at 940 nm, with a fast response time (trise/tfall = 3.85 μs/5.70 μs) under low irradiance of 0.104 mW cm−2. © 2025 Elsevier B.V.

关键词： Photodetectors

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Wearable Strain Sensors with Aligned Macro Carbon Cracks Using a Two-Dimensional Triaxial-Braided Fabric Structure for Monitoring human Health

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ACS APPLIED MATERIALS & INTERFACES 2021年第19期13卷 22926-22934页

作者： Park, Sangki Choi, Hyeongsub Cho, Yujang Jeong, Jaeseon Sun, Jingzhe Cha, Seokjun Choi, Minseok Bae, Jihyun Park, Jong-Jin Chonnam Natl Univ Dept Polymer Sci & Engn Gwangju 61186 South Korea Hanyang Univ Dept Clothing & Text Human Tech Convergence Program Seoul 133791 South Korea

Recently, wearable sensors, due to their ability to exhibit characteristics, have been appealing for health monitoring through detection of human motions and vital signals. The development of strain sensors with high sensing performance and wearability has been a great challenge to date. In this study, a textile-based strain sensor with good skin affinity was fabricated through a simple fabrication process of dip-coating 2D triaxial-braided fabrics using carbon ink and then drying. The macro crack aligned on the 2D triaxial-braided fabric with a high-density structure and good recovery force. The sensitivity of textile-based strain sensor can be enhanced due to aligned macro crack formed by prestrained fabricating process and characteristic of the 2D triaxial braided fabric with high dense structure. The optimized sensor exhibits high sensitivity (gauge factor: 128) in a strain range of 0-30%, durability (5000 cycles), washability, low hysteresis, and fast response time (90 ms). Therefore, it can be applied as a wearable sensor that can monitor human motions (large strain) and biosignals (subtle strain).

关键词： triaxial-braided fabric wearable sensor textile-based sensor macro crack prestrain process dip-coating

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Soft Pneumatic Device Designed to Mimic the Periosteal Environment for Regulating the Fate of Mesenchymal Stem Cells

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ADVANCED HEALTHCARE MATERIALS 2025年第0期 e2403229页

作者： Im, Gwang-Bum Lee, Jae Gyeong Lim, Hosub Lee, Jae-Won Park, Hyun Su Kim, Yongju Asad, Nauman Kim, Hak-Rin Wie, Jeong Jae Bhang, Suk Ho Sungkyunkwan Univ Sch Chem Engn Suwon 16419 South Korea Hanyang Univ Dept Organ & Nano Engn Seoul 04763 South Korea Hanyang Univ Human Tech Convergence Program Seoul 04763 South Korea Harvard Med Sch Brigham Womens Hosp Div Engn Med Dept MedBrigham & Womens Hosp Boston MA 02115 USA Harvard Med Sch Brigham Womens Hosp Dept Med Renal Div Boston MA 02114 USA Kyungpook Natl Univ Sch Elect & Elect Engn Daegu 41566 South Korea Inha Univ Dept Polymer Sci & Engn Incheon 22212 South Korea Kyungpook Natl Univ Sch Elect Engn Daegu 41566 South Korea Hanyang Univ Res Inst Ind Sci Seoul 04763 South Korea Hanyang Univ Dept Chem Engn Seoul 04763 South Korea Hanyang Univ Inst Nano Sci & Technol Seoul 04763 South Korea SUNY Dept Chem Engn Coll Environm Sci & Forestry Syracuse NY 13210 USA SUNY Michael M Szwarc Polymer Res Inst Coll Environm Sci & Forestry Syracuse NY 13210 USA Harvard Med Sch Dept Surg Boston MA 02115 USA

Replicating the complex mechanical forces of muscle movement and fluid flow in in vitro cell culture systems is crucial for understanding cell differentiation and development. However, previous research focused on cell differentiation on static micro/nanotextures without a force field or flat 2-dimensional substrates under a continuous in-plane mechanical force. In this study, cell differentiation is reported using a spatial geometric platform that can periodically modulate complex mechanical forces through a custom-made soft pneumatic device (SPD) to mimic the interfaces between periosteum and interstitial fluid. To elucidate fluidic dynamics and cell fates relevant to bone physiology, the platform exhibited distinct functional responses based on mechanical force levels: low mechanotransduction induced mesenchymal stem/progenitor cells differentiation into osteoprogenitor cells (approximate to 1.5-fold increase in osteo-differentiation), while high mechanotransduction resulted in structural disruptions resembling cell detachment without protein degradation (approximate to 2-fold increase in effective cell detachment). Numerical simulations of SPD elucidated the principal mechanical components for programmable cell differentiation and detachment by deconvoluting the in-plane and out-of-plane mechanical forces of the SPD complex mode. This study offers comprehensive and novel insights into the correlation between mechanical forces and cell differentiation, recovery, and injury in organisms.

关键词： MSC osteogenesis periosteum soft materials

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Factors influencing life satisfaction: Role of physical fitness, body satisfaction, and shopping

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FAMILY & CONSUMER SCIENCES RESEARCH JOURNAL 2022年第2期51卷 90-102页

作者： Yoo, Jeong-Ju Lee, Sae Eun Baylor Univ Dept Human Sci & Design Waco TX 76798 USA Hanyang Univ Dept Clothing & Text Human Tech Convergence Program Seoul South Korea

The goal of this study was to assess the relationship between physical activity, body satisfaction, psychological distress, and life satisfaction. In addition, the effects of impulse and compulsive shopping behaviors concerning body satisfaction and psychological distress are analyzed. Two hundred thirty female college students participated in an online survey. Structural equation modeling was used to analyze the data. The results indicated that physical activity positively influences body image and ultimately improves life satisfaction. Compulsive shopping negatively affects psychological distress for individuals with poor body image. Physical activity professionals should recognize the factors that will impact one's life satisfaction.

关键词： body satisfaction irrational shopping life satisfaction physical activity psychological distress

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Purchase intention toward sustainable masks after COVID-19: the moderating role of health concern

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FASHION AND TEXTILES 2022年第1期9卷 43页

作者： Lee, Sae Eun Kim, Seo Jeong Oh, Kyung Wha Lee, Kyu-Hye Hanyang Univ Dept Clothing & Text Human Tech Convergence Program 222Wangsimni Ro Seoul 04763 South Korea Hanyang Univ Dept Clothing & Text 222Wangsimni Ro Seoul 04763 South Korea Chung Ang Univ Dept Fash Anseong 06974 Kyunggi South Korea Hanyang Univ Dept Clothing & Text Human Tech Convergence Program 222Wangsimni Ro Seoul South Korea

This study aimed to investigate consumers' intentions to purchase sustainable masks to reduce the environmental pollution caused by disposable masks in the context of COVID-19. A research model was derived based on the Value-Belief-Norm theory and the Theory of Planned Behavior, and the moderating role of health concerns and environmental knowledge due to the COVID-19 pandemic were examined. Through a Korean online survey company, we collected data on sustainable masks from respondents aged from their 20 s to 50 s, living in the Korea, and a structural equation analysis was performed on the 337 valid samples. Environmental concerns and beliefs were found to have a positive impact on the purchase intention on sustainable masks. Although environmental knowledge played the role of a moderator, we found that the higher the health concern, the stronger the purchase intention. Based on these results, it is possible to derive a strategy to increase the purchase of sustainable masks and reduce the environmental pollution caused by disposable masks. A sales strategy should be implemented for groups with high health concern. In addition, since the subjective norm increases the purchase intention for sustainable masks, advertising that stimulates them will help reduce environmental pollution caused by disposal masks. In the future, it will be possible to help reduce environmental pollution not only during the COVID-19 pandemic, but also during other emerging pandemics.

关键词： Sustainable mask Mask pollution Polymer-based face masks Health concern VBN TPB

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Environmentally sustainable fashion and conspicuous behavior

HUMANITIES & SOCIAL SCIENCES COMMUNICATIONS

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humanITIES & SOCIAL SCIENCES COMMUNICATIONS 2024年第1期11卷 498页

作者： Lee, Sae Eun Lee, Kyu-Hye Hanyang Univ Dept Clothing & Text Human Tech Convergence Program Seoul South Korea Pusan Natl Univ Res Inst Human Ecol Busan South Korea

This study examines the impact of conspicuous consumption on environmentally sustainable fashion brands (ESFBs). Most previous studies have been limited to environmental perspectives;however, research on environmental behavior by conspicuousness has been lacking. This study views the brand as a tool for revealing oneself and examines the moderator brand-self-connection. It utilized a structural equation model with 237 valid questionnaires. Its findings are as follows: (1) Conspicuous consumption, fashion trend conspicuousness, and socially awakened conspicuousness positively affect the word-of-mouth (WOM) marketing of ESFBs. (2) Environmental belief is fully mediated by the environmental norm (EN) and does not directly affect WOM. (3) The more consumers are consistent with ESFBs, the stronger their WOM marketing. They are moderated only by the EN and socially awakened conspicuousness. (4) A higher fashion trend conspicuousness is associated with increased WOM marketing, indicating that such brands are frequently used as a method of self-expression. This study highlights consumers' socially awakened conspicuousness and fashion trend conspicuousness in relation to ESFBs and discusses some implications.

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