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SSRN 2022年

作者： Alghadhban, Shama Kim, Dongwoo Koo, ChangUk Lee, Kangwon Ye, Sung-Joon Program in Biomedical Radiation Sciences Department of Transdisciplinary Studies Graduate School of Convergence Science and Technology Seoul National University Seoul Korea Republic of Department of Applied Bioengineering Research Institute of Convergence Science Graduate School of Convergence Science and Technology Seoul National University Seoul Korea Republic of Biomedical Research institute Seoul National University Hospital Seoul Korea Republic of Advance Institutes of Convergence Technology Seoul National University Suwon Korea Republic of

Two tissue-equivalent bromine-based PRESAGE ® dosimeters were fabricated in-house with and without gold nanoparticles (GNPs). The radical initiators used in the two formulas, F1 and F2, were 1,1,1,2-tetrabromoethane and tetrabromomethane, respectively. The aim of this study is to investigate the dependence of radiosensitization on PRESAGE ® formula, GNP concentrations and size, and irradiation energy. Their optical density changes pre- and post-irradiation of 150 kVp and 6 MV X-rays were measured with and without GNPs using a spectrophotometer. Dose enhancement factors of 150 kVp for 0.125, 0.25 and 0.5 mM of 50 nm-GNPs were 1.23, 1.26 and 1.27, respectively, measured by F1. The same factors were 1.20, 1.33 and 1.45 measured by F2. About 4% and 2% dose enhancement of 6 MV at 0.25 mM of 50 nm-GNPs were measured by F1 and F2, respectively. The dose enhancement of 150 kVp at 0.25 mM of 5 nm-GNP was 1.6 measured by F1. The dependencies observed in the two formulas were confirmed by Monte Carlo simulations. The tissue-equivalent bromine-based PRESAGE ® dosimeters can be used to estimate dose enhancement of X-rays which was shown to be dependent on PRESAGE ® formula, radiation energy, GNPs concentration and size. © 2022, The Authors. All rights reserved.

关键词： Gold nanoparticles

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A Layout-to-Generator Conversion Framework With Graphical User Interface for Visual programming of Analog Layout Generators

TechRxiv

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TechRxiv 2023年

作者： Jeong, Sungyu Lee, Chanhyong Kim, Minsu Jang, Iksu Lee, Myungguk Choi, Junung Kim, Byungsub The Department of Electrical Engineering Pohang University of Science and Technology Pohang-si37673 Korea Republic of The Department of Convergence IT Engineering Pohang University of Science and Technology Pohang-si37673 Korea Republic of The Department of Semiconductor Engineering Pohang University of Science and Technology Pohang-si37673 Korea Republic of The Graduate School of Artificial Intelligence Pohang University of Science and Technology Pohang-si37673 Korea Republic of The Institute for Convergence Research and Education in Advanced Technology Yonsei University Seoul03722 Korea Republic of

We propose a visual programming framework that helps a designer easily convert an existing analog layout into the layout generator. Using a graphical user interface (GUI), designers can easily load an existing layout, convert it into the layout generator, and visually verify the generated layout result. A GUI-supported visual programming method enables intuitive and straightforward programming to significantly reduce the required programming skills and coding workload. Through program blocks, designers can easily describe and compile a layout generator. Layout-code synchronization updates the program blocks automatically when layout elements are created, edited, or deleted via GUI. Expression assistance semi-automatically completes parameterized expressions of layout geometry through simple GUI manipulation. These methods greatly reduce the time and workload for development of the analog layout generator. Using the framework, a complex 20 Gb/s high-speed receiver was converted to the generator in 20 hours, which is just 45% of the time required for manual coding of the layout generator. Other high-speed analog blocks including DCDL, and DCC circuits were also converted to generators. The generators created hundreds of different layout designs, all of them passed design rule verification. The generated layouts achieved almost the same performance in post-layout simulation as the reference layouts. © 2023, CC BY-NC-SA.

关键词： Graphical user interfaces

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Advanced atomic force microscopy-based techniques for nanoscale characterization of switching devices for emerging neuromorphic applications

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Applied Microscopy 2021年第1期51卷 7.1-7.9页

作者： Kim, Young-Min Lee, Jihye Jeon, Deok-Jin Oh, Si-Eun Yeo, Jong-Souk School of Integrated Technology Yonsei University 85 Songdogwahak-ro Yeonsu-gu Incheon21983 Korea Republic of Yonsei Institute of Convergence Technology Yonsei University 85 Songdogwahak-ro Yeonsu-gu Incheon21983 Korea Republic of Nano Science and Engineering Integrated Science and Engineering Division Yonsei University 85 Songdogwahak-ro Yeonsu-gu Incheon21983 Korea Republic of

Neuromorphic systems require integrated structures with high-density memory and selector devices to avoid interference and recognition errors between neighboring memory cells. To improve the performance of a selector device, it is important to understand the characteristics of the switching process. As changes by switching cycle occur at local nanoscale areas, a high-resolution analysis method is needed to investigate this phenomenon. Atomic force microscopy (AFM) is used to analyze the local changes because it offers nanoscale detection with high-resolution capabilities. This review introduces various types of AFM such as conductive AFM (C-AFM), electrostatic force microscopy (EFM), and Kelvin probe force microscopy (KPFM) to study switching behaviors. © 2021, The Author(s).

关键词： Probes

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Advancements in nanobiosensor technologies for in-vitro diagnostics to point of care testing

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Heliyon 2024年第22期10卷 e40306页

作者： Kim, Chuntae Kang, Moon Sung Raja, Iruthayapandi Selestin Joung, Yoon Ki Han, Dong-Wook Institute of Nano-Bio Convergence Pusan National University (PNU) 46241 South Korea Center for Biomaterials Biomedical Research Institute Korea Institute of Science and Technology 02792 South Korea Department of Cogno-Mechatronics Engineering College of Nanoscience & Nanotechnology Pusan National University 46241 South Korea Division of Bio-Medical Science and Technology KIST School University of Science and Technology 02792 South Korea Department of Conversing Science and Technology Kyung Hee Univ. (KHU)-KIST Graduate School 02453 South Korea

Recently, the importance of rapid testing nanosensor technologies for in-vitro diagnostics (IVD) and point-of-care testing (POCT) is being increasingly recognized. Owing to their high sensitivity and rapidity, nanosensor-based diagnostic devices are evolving into self-diagnostic tools that enable real-time in-situ analyses. These advances have become the focus of the public health control system, not only to prevent the spread of infectious diseases but also to enable the early detection of critical diseases through continuous health monitoring technologies. Current research on rapid diagnostic nanosensor technologies has focused on improving accuracy, sensitivity, rapid test systems, cost-effectiveness, and accessibility. In this review, we discuss the development of self-testing IVD technologies based on rapid diagnostic nanosensor platforms. The convergence of nanosensors and advanced materials can provide faster, more accurate, and more accessible IVD-based POCT solutions, representing an important advancement in healthcare. Here, we present nanosensor technologies for diagnosing biomarkers in in-vitro samples and improving diagnostic efficiency. nanosensor-based self-diagnostic devices have the potential to be extended to personalized healthcare platforms, enabling the continuous monitoring of infectious diseases, cancer, and other serious issues. This review highlights the importance of research in this field to improve diagnostic efficiency. © 2024 The Authors

关键词： Healthcare devices In-vitro diagnostics nanosensors Point of care testing Rapid test

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Atomic Dispersion of Rh on Interconnected Mo_(2)C nanosheet Network Intimately Embedded in 3D Ni_(x)MoO_(y) nanorod Arrays for pH-Universal Hydrogen Evolution

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Energy & Environmental Materials 2023年第5期6卷 236-250页

作者： Thi Luu Luyen Doan Dinh Chuong Nguyen Patrick M.Bacirhonde Ahmed S.Yasin Abdelrahman I.Rezk Nelson Y.Dzade Cheol Sang Kim Chan Hee Park Department of Bionanotechnology and Bioconvergence Engineering Graduate SchoolJeonbuk National UniversityJeonju Jeollabuk-do 54896Korea Department of Nano Convergence Engineering Jeonbuk National UniversityJeonju Jeollabuk-doJeonbuk 54896Korea Graduate School of Energy Science and Technology Chungnam National UniversityDaejeon 34134Korea Department of Energy and Mineral Engineering The Pennsylvania State UniversityUniversity Park State CollegePA 16802USA Division of Mechanical Design Engineering School of EngineeringJeonbuk National UniversityJeonju Jeollabuk-do 54896Korea Department of Bionanosystem Engineering Graduate School Jeonbuk National UniversityJeonju Jeollabuk-do 54896Korea

Herein,a simple synthetic approach is employed for the atomic dispersion of Rh atoms(Rh SAs)over the surface of interconnected Mo_(2)C nanosheets intimately embedded in a three-dimensional Ni_(x)MoO_(y)nanorod arrays(Ni_(x)MoO_(y)NRs)framework;we found that the introduction of both isolated Rh SAs and Ni_(x)MoO_(y)NRs adjusts the electrocatalytic function of the host Mo_(2)C toward the direction of being an advanced and highly stable electrocatalyst for efficient hydrogen evolution at pH-universal *** a result,the proposed catalyst outperforms most recently reported transition metal-based catalysts,and its performance even rivals that of commercial Pt/C,as demonstrated by its ultralow overpotentials of 31.7,109.7,and 95.4 mV at a current density of 10 mA cm^(-2),along with its small Tafel slopes of 42.4,51.2,and 46.8 mV dec^(-1)in acidic,neutral,and alkaline conditions,*** addition,the catalyst shows remarkable long-term stability over all pH values with good maintenance of its catalytic activity and structural characteristics after continuous operation.

关键词： hydrogen evolution reaction Mo_(2)C nanosheets Ni_(x)MoO_(y)nanorod arrays pH-universal catalyst single Rh atoms

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Catalysis-Induced Highly-Stable Interface on Porous Silicon for High-Rate Lithium-Ion Batteries

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nano-Micro Letters 2025年第8期 556-571页

作者： Zhuobin Han Phornphimon Maitarad Nuttapon Yodsin Baogang Zhao Haoyu Ma Kexin Liu Yongfeng Hu Siriporn Jungsuttiwong Yumei Wang Li Lu Liyi Shi Shuai Yuan Yongyao Xia Yingying Lv Research Centre of Nanoscience and Nanotechnology Shanghai University Program in Bioinformatics and Computational Biology Graduate SchoolChulalongkorn University Department of Chemistry Faculty of ScienceSilpakorn University Sinopec Shanghai Research Institute of Petrochemical Technology Co. Ltd. Department of Chemistry and Center of Excellence for Innovation in Chemistry Faculty of Science Ubon Ratchathani University National University of Singapore (Chongqing) Research Institute Emerging Industries Institute Shanghai University Department of Chemistry Fudan University

Silicon stands as a key anode material in lithium-ion battery ascribing to its high energy density. Nevertheless, the poor rate performance and limited cycling life remain unresolved through conventional approaches that involve carbon composites or nanostructures, primarily due to the un-controllable effects arising from the substantial formation of a solid electrolyte interphase（SEI） during the cycling. Here, an ultra-thin and homogeneous Ti doping alumina oxide catalytic interface is meticulously applied on the porous Si through a synergistic etching and hydrolysis process. This defect-rich oxide interface promotes a selective adsorption of fluoroethylene carbonate, leading to a catalytic reaction that can be aptly described as “molecular concentration-in situ conversion”. The resultant inorganic-rich SEI layer is electrochemical stable and favors ion-transport, particularly at high-rate cycling and high temperature. The robustly shielded porous Si, with a large surface area, achieves a high initial Coulombic efficiency of 84.7% and delivers exceptional high-rate performance at 25 Ag-1(692 mAh g-1) and a high Coulombic efficiency of 99.7% over 1000 cycles. The robust SEI constructed through a precious catalytic layer promises significant advantages for the fast development of silicon-based anode in fast-charging batteries.

关键词：

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D^(6h)Symmetric Radical Donor-Acceptor nanographene Modulated Interfacial Carrier Transfer for High-Performance Perovskite Solar Cells

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CCS Chemistry 2023年第9期5卷 2159-2170页

作者： Can Wang Yifeng Gao Zhen-Lin Qiu Ping-Ping Sun Naoyuki Shibayama Zilong Zhang Qiu Xiong Fangbin Ren Shui-Yang Lien Lusheng Liang Jiaoxia Zhang Yuan-Zhi Tan Peng Gao CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouFujian 350002 Laboratory for Advanced Functional Materials Xiamen Institute of Rare Earth MaterialsHaixi InstituteChinese Academy of SciencesXiamen 361021 University of Chinese Academy of Sciences Beijing 100049 School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003 Collaborative Innovation Center of Chemistry for Energy Materials State Key Laboratory for Physical Chemistry of Solid SurfacesEngineering Research Center for Nano-Preparation Technology of Fujian ProvinceDepartment of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005 Department of Chemistry School of ScienceHainan UniversityHaikou 570228 Faculty of Biomedical Engineering Graduate School of EngineeringToin University of YokohamaYokohamaKanagawa 225-8503 Xiamen University of Technology Xiamen 361024

Imbalanced charge-carrier extraction remains an issue aggravating interfacial charge accumulation and *** hopping transport channels could accelerate the extraction of ***,we demonstrated an effective“bridging interface”strategy between the perovskite/2,2′,7,7′-tetrakis(N,N-di-pmethoxyphenylamine)-9,9′-spirobifluorene(spiro-OMeTAD)that modulates interfacial charge transfer and improves hole mobility using radical-containing donor-acceptor nanographenes(D-A NGs)possessing electron-deficient perchlorinated NGs and electron-rich aniline *** fully delocalized backbone of nanographene formed a conjugated bridge for intermolecular charge transfer and generated stable radical cations,verified by electron spin *** andπ-πstacking orientation of D-A NGs also provided advantageous hopping transport *** favorable charge transfer within D-A NGs,systematic explorations indicated a strong interface coupling and noticeable charge transfer across the D-A NGs and perovskite interface,where electrons would flow from D-A NGs to perovskite,and holes would flow from perovskite to D-A ***,the hole mobility of spiro-OMeTAD was also enhanced because the D-A NGs would diffuse into the spiro-OMeTAD *** a result,planar n-i-p perovskite solar cellsmodified byD-ANG-OMe/D-ANG-tBudeliveredchampion power conversion efficiencies(PCEs)of 23.25%and 23.51%,respectively.

关键词： perovskite solar cell radicals donor-acceptor nanographene hole mobility interfacial charge transfer

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Antioxidative solution processing yields exceptional Sn(Ⅱ) stability for sub-1.4 eV bandgap inorganic perovskite solar cells

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Journal of Energy Chemistry 2022年第9期31卷 487-494,I0014页

作者： Mingyu Hu Gaopeng Wang Qinghong Zhang Jue Gong Zhou Xing Jinqiang Gao Jian Wang Peng Zeng Shizhao Zheng Mingzhen Liu Yuanyuan Zhou Shihe Yang Guangdong Provincial Key Lab of Nano-Micro Materials Research School of Chemical Biology and BiotechnologyShenzhen Graduate SchoolPeking UniversityShenzhen 518055GuangdongChina School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731SichuanChina Department of Physics Hong Kong Baptist UniversityKowloonHong Kong 999077China Smart Society Lab Hong Kong Baptist UniversityKowloonHong Kong 999077China Institute of Biomedical Engineering Shenzhen Bay LaboratoryShenzhen 518055GuangdongChina

Owing to the combined features of sub-1.4 eV bandgap and all-inorganic composition,cesium tin–lead(Sn-Pb)triiodide perovskite is promising for approaching the Shockley-Queisser limit of solar cells while avoiding the use of volatile organic *** the low Sn(Ⅱ)stability in this perovskite remains a hurdle for delivering its theoretically attainable device *** we present a synthesis method of this perovskite based on an acetylhydrazine-incorporated antioxidative solution *** investigation shows that acetylhydrazine effectively reduces the oxidation of solution-phase Sn(Ⅱ)and meanwhile creates an electron-rich,protective nano-environment for solid-state Sn(Ⅱ)*** lead to high oxidation resistance of the final film as well as effective defect *** resultant solar cells demonstrate power conversion efficiencies up to 15.04%,the highest reported so far for inorganic perovskite devices with sub-1.4 eV ***,the T_(90) lifetime of these devices can exceed 1000 hours upon light soaking in a nitrogen atmosphere,demonstrating the potential advantage when lower-bandgap perovskite solar cells go all-inorganic.

关键词： Inorganic perovskites Ideal-bandgap Perovskite solar cells Tin defects Efficiency

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Multi‑Functional Fibrous Dressings for Burn Injury Treatment with Pain and Swelling Relief and Scarless Wound Healing

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Advanced Fiber Materials 2023年第6期5卷 1963-1985页

作者： Zhengchao Yuan Yue Zhao Muhammad Shafiq Jiahui Song Jing Hou Yuqing Liang Xiao Yu Yujie Chen Fan Yu Mohamed EL‑Newehy Hany EL‑Hamshary Yosry Morsi Shichao Jiang Hui Zheng Xiumei Mo State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Shanghai Engineering Research Center of Nano‑Biomaterials and Regenerative MedicineCollege of Biological Science and Medical EngineeringDonghua UniversityShanghai 201620People’s Republic of China Department of Chemical Engineering Faculty of EngineeringGraduate SchoolKyushu UniversityFukuoka 819‑0395Japan United Graduate School of Drug Discovery and Medical Information Sciences Gifu University1‑1 YanagidoGifu 501‑1193Japan Department of Orthopedics Shandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinan 250021People’s Republic of China Department of Chemistry College of ScienceKing Saud UniversityP.O.Box 245511451 RiyadhSaudi Arabia Faculty of Engineering and Industrial Sciences Swinburne University of TechnologyBoroondaraVIC 3122Australia Medical Science and Technology Innovation Center Shandong First Medical University&Shandong Academy of Medical SciencesJinan 250117People’s Republic of China Department of Thoracic Surgery Shanghai Pulmonary HospitalTongji University School of MedicineShanghai 200443People’s Republic of China

As one of the most common forms of skin injuries,skin burns are often accompanied by edema pain,suppuration of infection,slow tissue regeneration,and severe scar formation,which significantly delay wound healing as well as affect the quality of *** prepared multifunctional electrospun poly(L-lactide-co-glycolide)/gelatin(P/G)-based dressings to synergistically harness the therapeutic benefits of peppermint essential oil(T),burn ointment(B),and Oregano essential oil(O)(P/G@TBO)for skin regeneration in punch and burn injury *** P/G@TBO can afford the sustained release of bioactive cues for up to 72 h as well as remarkably promote cell migration(ca.P/G@TBO,89%*** group,51%)at 24 *** P/G@TBO membranes also showed significant angiogenic effect as well as antibacterial and anti-inflammatory properties than that of the control group in ***,P/G@TBO dressings enabled fast wound healing(ca.P/G@TBO,100%wound closure *** group,95%)in a full-thickness excisional defect model up to 14 days in *** evaluation of membranes in different animal models,including tail wagging model,facial itch model,and hot burn injury model showed significant pain relieve effect as well as itching and swelling relief functions during earlier stages of wound *** were next transplanted into a scalded wound model in rats and an ear punch wound model in rabbits,which manifested antibacterial and anti-inflammatory properties and promoted re-epithelialization to achieve scarless wound healing percentage wound closure at day 28:P/G@TBO,96%*** group 66%.Taken together our approach of simultaneously harnessing T,B,and O to enable multifunctionality to fibrous dressings may hold great promise for burn wound healing applications and other related disciplines.

关键词： Burn injury Wound healing Skin regeneration Pain and swelling relief nanofiber membrane

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Impact of defects on high cycle fatigue life in wire-arc additive manufactured TC17 alloy

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Engineering Failure Analysis 2025年 174卷

作者： Yu, Banglong Wang, Ping Zhao, Peng Song, Xiaoguo SaGong, Man Jae Kim, Hyoung Seop State Key Laboratory of Advanced Welding and Joining Harbin Institute of Technology Harbin150001 China School of Ocean Engineering Harbin Institute of Technology-Weihai Weihai264209 China Shandong Institute of Shipbuilding Technology Weihai264209 China Graduate Institute of Ferrous & Eco Materials Technology Pohang University of Science & Technology Pohang37673 Korea Republic of Institute for Convergence Research and Education in Advanced Technology Yonsei University Seoul03722 Korea Republic of Tohoku University Sendai980-8577 Japan

Engineering applications for additively manufactured (AM) titanium alloy components are often constrained by suboptimal fatigue properties and high variability in fatigue data due to defects. This study aims to address these limitations by developing a fatigue life prediction model that incorporates the influence of defects in wire arc additive manufacturing (WAAM) TC17 alloy. The microstructure and mechanical properties of WAAM-TC17 were thoroughly characterized. Results revealed that the average α-grains length and width in WAAM-TC17 was significantly smaller, approximately one-twelfth and one-seventeenth of that in Forged-TC17, respectively. The yield strength of the WAAM-TC17 horizontal and vertical specimens was approximately 93% of the Forged-TC17. However, the high-cycle fatigue (HCF) performance of WAAM-TC17 specimens was inferior due to crack initiation dominated by porosity and lack of fusion (LOF) defects. To enhance fatigue life prediction accuracy for defective WAAM-TC17 specimens, a novel parameter K*, derived from the stress concentration factor (Kt) using support vector regressor (SVR) in machine learning (ML), was introduced. The K*-N mean curve demonstrated high predictive accuracy for the HCF life of defective WAAM-TC17 specimens, with a standard deviation (STD) of 0.33. © 2025 Elsevier Ltd

关键词： Titanium alloys

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