Article
Polymer Science
Hyeon Sang Bark, Inhee Maeng, Jin Un Kim, Kyoung Dong Kim, Jae Hun Na, Junki Min, Jungsup Byun, Yongkeun Song, Byung-youl Cha, Seung Jae Oh, Young Bin Ji
Summary: This study investigated the changes in spectral properties of anti-adhesion films cross-linked and surface-modified through electron beam irradiation using terahertz time-domain spectroscopy (THz-TDS). The freeze-drying and compression processes during sample preparation were found to affect the terahertz characteristics of the films, and this was confirmed using optical coherence tomography (OCT) imaging. It was also confirmed through experimentation that the refractive index and absorption coefficient of the films were dependent on the cross-linking state. This is the first experiment to explore the feasibility of monitoring cross-linking states using terahertz waves.
Article
Environmental Sciences
Tingting Zhao, Jiali Pan, Chengkai Mao, Lei Chen, Jiayuan Li, Haiyang Shao, Gang Xu
Summary: In this study, electron beam (EB) irradiation was used to effectively decompose the widely existing Cu-ethylenediaminetetraacetic acid (Cu-EDTA) complexes with high stability and poor biodegradability. The addition of 8 mM H2O2 resulted in 99.0% copper ions removal at a relatively low irradiation dose. Mechanism analysis indicated that EB irradiation combined with spontaneously induced Fenton-like reactions were responsible for its excellent performance.
Article
Chemistry, Multidisciplinary
Junchang Chen, Mingxing Zhang, Jie Shu, Mengjia Yuan, Wenfu Yan, Pu Bai, Linwei He, Nannan Shen, Shicheng Gong, Duo Zhang, Jiong Li, Jiangtao Hu, Rong Li, Guozhong Wu, Zhifang Chai, Jihong Yu, Shuao Wang
Summary: Utilizing high-energy electron beam irradiation as an energy source, the formation reaction of zeolites can be activated rapidly at ambient conditions, leading to significant energy saving and enhanced surface area and heavy metal removal capabilities through the generation of crystal defects and additional pore windows controlled by irradiation dose.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Gabriel Rodrigues de Almeida Neto, Cesar Augusto Goncalves Beatrice, Daniel Rodrigo Leiva, Luiz Antonio Pessan
Summary: This study investigated the preparation of PEI-LaNi5 composite films for hydrogen storage, demonstrating that PEI films filled with LaNi5 are promising materials for this purpose. The membranes were successfully produced through solvent casting assisted by an ultrasonic bath, and the results showed that the film morphology remained unchanged after hydrogenation cycles.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Ceramics
V. S. Bilanych, O. Shylenko, S. Vorobiov, V. V. Bilanych, V. Rizak, V. M. Rubish, A. Feher, Z. Molcanova, K. Saksl, V. Komanicky
Summary: Charge relaxation processes after point irradiation of AsxSe100-x and Ge(x)Se(100-x) chalcogenide films with an electron beam were studied. Two relaxation processes were observed in the dose range from 2.05*10(2) mu Ccm(-2) to 9.3*10(7) mu Ccm(-2), with relaxation times differing by more than 10(3) times. The first process is associated with the relaxation of positive charge in the near-surface region, while the second process involves the formation of a negative charge layer inside the film and electron-induced mass transport under the influence of an internal electric field.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Polymer Science
Soo-Tueen Bee, Nicole Ooi Ker Qi, Lee Tin Sin, Hon-Meng Ng, Jun-Ven Lim, Chantara Thevy Ratnam, Chi Ma
Summary: Increasing the amount of carbon nanotubes can improve the tensile strength and Young's modulus of PVOH/CNT nanocomposites, though excessive amounts lead to agglomeration and reduced mechanical properties. Electron beam irradiation enhances the tensile strength by promoting interfacial adhesion between CNT particles and the PVOH matrix, affecting hydrogen bonding within the matrix.
Article
Engineering, Environmental
Mengjun Sun, Ziqi Zeng, Wei Hu, Keyan Sheng, Zhengying Wang, Zhilong Han, Linfeng Peng, Chuang Yu, Shijie Cheng, Mingwu Fan, Jiang Huang, Jia Xie
Summary: In this study, an initiator-free, simple, clean and efficient technique-high-energy electronic beam (e-beam) irradiation--is used to in-situ prepare gel polymer electrolytes (GPEs) for solid-state lithium metal batteries (LMBs). The obtained GPEs demonstrate satisfactory ionic conductivity, high lithium-ion transference number, and good electrochemical stability. Moreover, e-beam can directly transform liquid-state pouch cells to solid-state, enabling large-scale production of solid-state LMBs. This study holds great potential for the development of high-energy-density LMBs.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Kai Ning, Zhuang Tang, Pengkang Xie, Jianping Hu, Zhiyao Fu
Summary: The impact of high-energy electron beam irradiation on silicone rubber composite insulator was investigated. It was found that with increasing irradiation dose, the properties of silicone rubber first increased and then decreased. SEM observation showed that the silicone rubber became more compact after irradiation. ATR-FTIR and XPS studies revealed a shift from crosslinking to degradation and the formation of a new Si(-O)(4) structure with increasing irradiation dose. An optimal irradiation dose of 40-50 kGy was determined based on comprehensive performances. This article provides support for understanding the irradiation modification of silicone rubber materials and guides the preparation method of new silicone rubber.
IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION
(2023)
Article
Polymer Science
Hyun-Su Seo, Jin-Young Bae, Kiok Kwon, Seunghan Shin
Summary: In this study, ionic conductive hydrogels were prepared using different comonomers to investigate their effects on the properties of the hydrogels. Electron beam irradiation was utilized to promote polymer chain growth and network formation simultaneously, leading to changes in the structure of the hydrogels. The choice of comonomer had a significant impact on the performance of the hydrogels, with AA or AAm enhancing peel strength and tensile strength, while AA improved adhesion without sacrificing ionic conductivity.
Article
Materials Science, Multidisciplinary
Hongji Yoon, Darim Choi, Taeyu Kim, Young Joon Yoon
Summary: Low-energy electron-beam irradiation can enhance the density and surface smoothness of SiO2 films without affecting their chemical bonding and atomic ratio.
Article
Chemistry, Multidisciplinary
Aninamol Ani, P. Poornesh, Albin Antony, K. K. Nagaraja, Ashok Rao, Gopalkrishna Hegde, Evgeny Kolesnikov, Igor Shchetinin, Suresh D. Kulkarni, Vikash Chandra Petwal, Vijay Pal Verma, Jishnu Dwivedi
Summary: The study investigated the influence of electron beam on CO gas sensing properties of indium-doped zinc oxide (IZO) thin films, showing that the structural changes and grain boundary variations after irradiation significantly affect the sensing performance. The enhancement in sensor response post-irradiation is attributed to the increase in oxygen vacancies and well-defined grain boundaries, which serve as crucial adsorption sites for CO gas.
Article
Chemistry, Physical
Yu Gu, Jianfeng Zhao, Haifeng Zhou, Haiqing Jiang, Jingye Li, Bowu Zhang
Summary: A graphene-based composite membrane was developed for high-selective acid recovery via diffusion dialysis. The membrane showed tolerance to intense ultrasonication and resistance to swelling in water. It exhibited higher H+ permeation and lower metal ion permeation compared to commercial DD membranes. The separation factor of the membrane in a mixed solution was significantly higher than that of existing DD membranes.
Article
Engineering, Electrical & Electronic
Jyoti Yadav, M. D. Anoop, Nisha Yadav, N. Srinivasa Rao, Fouran Singh, Takayuki Ichikawa, Ankur Jain, Kamlendra Awasthi, Rini Singh, Manoj Kumar
Summary: The effects of Ni7+ ion irradiation on Bi2Te3 thin films synthesized by e-beam evaporation were investigated. The films exhibited a polycrystalline rhombohedral structure. Irradiation caused a decrease in crystallite size and an increase in lattice strain. Raman spectra showed changes in A(1u)(1) modes with ion fluence. Surface roughness decreased due to the formation of nanocrystallites. XPS analysis confirmed the near stoichiometric composition of the films. The resistivity increased with ion fluence, resulting in a crossover behavior from n to p-type carriers. Compensation of bulk charge carriers was observed in the ion-irradiated films by adjusting the Fermi level.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Polymer Science
Changsheng Chen, Xuyun Guo, Guangming Zhao, Yunduo Yao, Ye Zhu
Summary: This study reports the beam effects on the structure and chemical bonding of PE, PCL, and P3HT spherulite thin films using quantitative electron diffraction and spectroscopy. The results reveal that electron beam irradiation leads to amorphization and mass loss, which can be effectively suppressed by cryo-protection. Different polymers exhibit different processes and mechanisms in response to beam effects.
Article
Chemistry, Multidisciplinary
Eva De Leo, Aurelio A. Rossinelli, Patricia Marques-Gallego, Lisa V. Poulikakos, David J. Norris, Ferry Prins
Summary: Linear gratings patterned on the surface of cQD thin films enhance the outcoupling of emission, resulting in bright and saturated colors. By adjusting the periodicity and orientation of the gratings, active color tuning of the thin-film emission is achieved.
Article
Chemistry, Multidisciplinary
Kwangmo Go, Kihyeon Bae, Kyueun Park, Seongjun Moon, Kyung Jin Lee
Summary: This study proposes a new Janus-type membrane for efficiently concentrating liquid radioactive wastes under solar energy, enhancing photo-thermal energy conversion efficiency, avoiding salt accumulation, and achieving the goal of sustained high-efficiency evaporation and concentration on the membrane.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Gyori Park, Jun-Seob Park, Hyun-Suk Kim, Kyung Jin Lee
Summary: Research on developing lithium-ion batteries (LiB) with improved performance, particularly in terms of each component like cathode and anode, has been progressing, but detailed information on the processing of each component is still limited. In this study, different carbon conductors were used in preparing cathode materials, showing that the homogenizer and three-roll milling method are effective alternatives for fabricating cathode electrodes.
Article
Materials Science, Multidisciplinary
Jaeyu Lee, Kyung Jin Lee
Summary: This paper introduces syringeless electrospinning as an excellent method to overcome the limitations of colloidal electrospinning. It enables the fabrication of nonwoven nanofiber webs with diverse combinations of polymers and fillers, allowing for various applications such as detoxification.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2022)
Article
Polymer Science
Jaeyu Lee, Seongjun Moon, Yong Bin Han, Seung Jae Yang, Joerg Lahann, Kyung Jin Lee
Summary: In this study, anisotropic multicompartmental microfibers composed of different polymers are prepared via charge reversal electrohydrodynamic (EHD) co-jetting, resulting in microfibers with distinct compositional boundaries. The charge reversal during EHD co-jetting enables facile fabrication of multicompartmental microfibers with desired composition and tunable inner architecture, broadening their spectrum of potential applications in functional microfibers and cell scaffolds with multiple physical and chemical properties.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Jong Heon Kim, Kwangmo Go, Kyung Jin Lee, Hyun-Suk Kim
Summary: This study successfully developed an all-solid-state lithium metal battery with high discharge capacity and good cycling performance by using a solid composite electrolyte and optimizing the electrode-solid-electrolyte interface, making it a promising alternative to conventional liquid electrolyte-based batteries.
Article
Chemistry, Multidisciplinary
Jongha Hwang, Mincheol Jung, Jin-Ju Park, Eun-Kyung Kim, Gunoh Lee, Kyung Jin Lee, Jae-Hak Choi, Woo-Jin Song
Summary: Silicon-based electrodes are considered promising anodes for high-energy-density lithium-ion batteries due to their advantages, but the large volume change and low electrical conductivity during charge-discharge process are critical issues. In this study, the researchers solved the problem of volume expansion by applying a carbon coating method using low-cost phenolic resin, resulting in high-performance lithium-ion batteries.
Article
Materials Science, Multidisciplinary
Hanjin Jeong, Jongha Hwang, Jimi Kim, Woo-Jin Song, Kyung Jin Lee
Summary: Lithium-ion batteries have gained attention as a next-generation energy solution, but current components need improvement. This paper presents a PVDF-based composite nanofiber electrospun non-woven separator, which improves lithium-ion transportation and shows enhanced electro-chemical performances.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Nanoscience & Nanotechnology
Ji-Min Park, Hyunkyu Lee, Gun Oh Lee, Seong Cheol Jang, Yun Hee Chang, Hyunmin Hong, Kwun-Bum Chung, Kyung Jin Lee, Dae Hwan Kim, Hyun-Suk Kim
Summary: In this study, metal capped Zn-Ba-Sn-O transistors with top-gate structures were proposed to enhance mobility, which can be applied in various fields such as high-resolution, large-area, and flexible displays.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Polymer Science
Baohai Pan, Soon Mo Park, Wu Bin Ying, Dong Ki Yoon, Kyung Jin Lee
Summary: Light-triggered shape memory thermoplastic polyurethane (TPU) was reported by grafting azido TPU with a photoswitchable azo compound. The trans-cis transitions of the azobenzene induced the recoiling of the main chain, leading to shape memory behavior. This facile method provides viable opportunities for soft robotics and smart TPU applications.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Elvis K. Boahen, Baohai Pan, Hyukmin Kweon, Joo Sung Kim, Hanbin Choi, Zhengyang Kong, Dong Jun Kim, Jin Zhu, Wu Bin Ying, Kyung Jin Lee, Do Hwan Kim
Summary: In this study, a Cl-functionalized iontronic pressure sensitive material (CLiPS) was developed, which achieved fast self-healing speed, high self-healing efficiency, excellent elastic recovery, and effective control of ion dynamics. This material has the potential for applications in future wearable electronics and human-machine interfaces.
NATURE COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Jae Hyuk Hwang, Sang Hwa Kim, Woongbi Cho, Woohwa Lee, Sungmin Park, Yong Seok Kim, Jong-Chan Lee, Kyung Jin Lee, Jeong Jae Wie, Dong-Gyun Kim
Summary: By utilizing self-crosslinkable 1,3,5-trivinylbenzene (TVB) for the inverse vulcanization of elemental sulfur, a highly IR-transparent sulfur-rich copolymer with remarkable thermomechanical properties is developed, overcoming the trade-off between IR optical and thermomechanical properties. This study is expected to provide important insights into the structure-property relationships of sulfur-rich copolymers and open up opportunities for practical applications.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Gyori Park, Hyun-Suk Kim, Kyung Jin Lee
Summary: The increased demand for energy storage devices has driven the market growth of Li-ion batteries. However, concerns about environmental pollution from waste and manufacturing process pollutants have arisen. N-methylpyrrolidone, a toxic organic pollutant used in the manufacturing process, has attracted attention. Therefore, the dry-based process for electrodes has become of interest. This study reports the fabrication of a cathode using a mortar-based dry process with carbon nanotubes, which showed improved electrochemical performance compared to carbon black.
Article
Engineering, Environmental
Hye-Nim Kim, June-Hyun Kim, Kyung Jin Lee, Ilgook Kim, In-Ho Yoon
Summary: In this study, a bead-type adsorbent was added during the conventional acid washing process to improve the desorption of cesium from contaminated clay minerals. The synthesized adsorbent showed high selectivity for Cs+ and significantly increased the Cs+ desorption by inhibiting the re-adsorption of Cs+ on the clay mineral. Therefore, this technique has the potential to be a useful and effective method for decontamination of radioactive clay.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Pandi Chen, Fenglong Li, Guyue Wang, Binbin Ying, Chao Chen, Ying Tian, Maosong Chen, Kyung Jin Lee, Wu Bin Ying, Jin Zhu
Summary: Artificial dura mater plays a crucial role in brain and spinal cord protection and support, but surgical tears are often unavoidable. This study has developed a multifunctional polyurethane (LSPU-2) with biocompatibility, anti-leakage, and self-healing properties, which matches the mechanical properties of the dura mater. It exhibits extremely low cytotoxicity and does not cause any negative skin lesions, and its anti-leakage properties have been confirmed. LSPU-2 can completely self-heal within 115 minutes at human body temperature, making it one of the most promising potential artificial dura materials.
MACROMOLECULAR BIOSCIENCE
(2023)
Review
Materials Science, Multidisciplinary
Jaeyu Lee, Seongjun Moon, Joerg Lahann, Kyung Jin Lee
Summary: Electrospinning has attracted attention for its ability to create nonwoven nanofiber webs with high surface area and porosity. However, traditional needle and syringe-based systems have limited productivity. This article examines the latest developments in nonconventional electrospinning methods, such as needleless and syringeless electrospinning, which have the potential to meet industrial-scale manufacturing requirements and produce nanofibers that are difficult to spin using traditional techniques.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2023)
