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Microsystems & Nanoengineering 2023年第2期9卷 367-379页

作者： Geon Kook Yehhyun Jo Chaerin Oh Xiaojia Liang Jaewon Kim sang-mok lee Subeen Kim Jung-Woo Choi Hyunjoo Jenny lee School of Electrical Engineering Korea Advanced Institute of Science and Technology291 Daehak-roYuseong-guDaejeon 34141South Korea KAIST Institute for NanoCentury(KINC) 291 Daehak-roYuseong-guDaejeon 34141Republic of Korea

Transcranial focused ultrasound stimulation is a promising therapeutic modality for human brain disorders because of its noninvasiveness,long penetration depth,and versatile spatial control capability through beamforming and beam ***,the skull presents a major hurdle for successful applications of ultrasound ***,skull-induced focal aberration limits the capability for accurate and versatile targeting of brain *** addition,there lacks a fully functional preclinical neuromodulation system suitable to conduct behavioral ***,we report a miniature ultrasound system for neuromodulation applications that is capable of highly accurate multiregion targeting based on acoustic *** work includes the design and implementation of an acoustic lens for targeting brain regions with compensation for skull aberration through time-reversal recording and a phase conjugation ***,we utilize MEMS and 3D-printing technology to implement a 0.75-g lightweight neuromodulation system and present in vivo characterization of the packaged system in freely moving *** preclinical system is capable of accurately targeting the desired individual or multitude of brain regions,which will enable versatile and explorative behavior studies using ultrasound neuromodulation to facilitate widespread clinical adoption.

关键词： versatile utilize recording

Undifferentiated pleomorphic sarcoma of the liver presenting as a unilocular cyst

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Hepatobiliary & Pancreatic Diseases International 2009年第5期8卷 541-543页

作者： Hyun-Soo Kim Gou Young Kim Sung-Jig Lim sang mok lee Youn Wha Kim Departments of Pathology School of MedicineKyung Hee University1 Hoegi-dongDongdaemun-gu130-702 SeoulSouth Korea Departments of Surgery School of MedicineKyung Hee University1 Hoegi-dongDongdaemun-gu130-702 SeoulSouth Korea

BACKGROUND:A malignant fibrous histiocytoma,recently referred to as an undifferentiated pleomorphic sarcoma (UPS),is very rare in the liver,and only 34 cases of primary hepatic malignant fibrous histiocytoma have been reported in the English literature. METHODS:We report a rare case of a hepatic UPS presenting as a unilocular cystic lesion with respect to histopathologic features,the newly revised diagnostic criteria,and the differential diagnosis. RESULTS:A 60-year-old man presented for evaluation of epigastric pain of 7 months *** computed tomography revealed a hypodense,unilocular cystic mass in the right lobe of the liver,measuring 14.0×11.1 cm.A right lobectomy was ***,the cut surface showed a single,well-circumscribed unilocular cystic tumor mass containing dark red-brown necrotic debris and blood clots, which occupied most of the ***,the tumor consisted of haphazardly arranged mononuclear pleomorphic tumor cells,admixed with abundant osteoclast- like multinucleated giant ***,the tumor cells expressed vimentin *** histopathologic and immunohistochemical findings were compatible with a *** patient is alive and well 41 months after surgery without recurrence. CONCLUSIONS:Clinically,most of the hepatic UPSs are solid *** two cases have presented as multilocular cystic masses.A primary hepatic UPS presenting as a unilocular cyst has never been reported.A UPS should be included in the differential diagnosis of unilocular cystic lesions in the liver.

关键词： undifferentiated pleomorphic sarcoma malignant fibrous histiocytoma liver unilocular cyst

Conversion of N-doped biochar from carotenoid-extracted Tetraselmis suecica and its application to produce supercapacitors

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Journal of Environmental Sciences 2025年第5期151卷 410-423页

作者： Se Hun lee Kang Hyun lee sang-hwa lee Soo Kweon lee Ok Sung Jeon Young Pyo Jeon Dongpyo Hong Young Joon Yoo sang Yoon Park Hah Young Yoo Advanced Institute of Convergence Technology(AICT) Seoul National UniversitySuwon 16229Republic of Korea Department of Biotechnology Sangmyung University20 Hongjimun 2-GilJongno-GuSeoul 03016Republic of Korea Department of Bio-Convergence Engineering Dongyang Mirae University445-8Gyeongin-roGuro-guSeoul 08221Republic of Korea Fermentation team Lotte R&D Center210 Magokjungang-RoGangseo-GuSeoul 07594Republic of Korea School of Electronic Engineering Kyonggi UniversityGyeonggi-do 16227Republic of Korea

Microalgae are one of the promising feedstocks for biorefinery,contributing significantly to net-zero emissions through carbon capture and ***,the disposal of microalgal byproducts from the manufacturing process causes additional environmental pollution,thus,a new application strategy is *** this study,the Tetraselmis suecica byproduct from the carotenoid extraction process was carbonized and converted into *** converted biochar was proved to be nitrogen-doped biochar(NDB),up to 4.69%,with a specific surface area of 206.59m^(2)/g andwas used as an electrode for a *** NDB electrode(NDB-E)in half-cell showed a maximum specific capacitance of 191 F/*** a full-cell test,the NDB-E exhibited a high energy density of 7.396 Wh/kg and a high-power density of 18,100 W/kg,and maintained specific capacity of 95.5%after charge and discharge of 10,000 *** conclusion,our study demonstrated that the carotenoid-extracted microalgal byproducts are a useful resource for the supercapacitor *** approach is the first to convert *** into active materials for supercapacitors.

关键词： Microalgae Tetraselmis suecica Carbonization N-doped biochar Supercapacitor

Recent progress and perspectives on highly-safe and energy-dense solid-state Li-CO_(2) batteries

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Science Bulletin 2025年第2期70卷 135-139页

作者： Yunyun Xu Zichen Xu sang-Young lee Zhong-Shuai Wu State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China Department of Chemical and Biomolecular Engineering Yonsei UniversitySeoul 03722Republic of Korea Dalian National Laboratory for Clean Energy Chinese Academy of SciencesDalian 116023China University of Chinese Academy of Sciences Beijing 100049China

Li-CO_(2)batteries are highly anticipated as promising candidates for advanced electrochemical energy storage systems owing to their high theoretical specific energy of 1876 Wh kg^(-1),based on the discharge products of Li_(2)CO_(3)and C,their environmentally benign CO_(2)utilization [1].Since CO_(2)is the main component of the atmosphere on Mars,Li-CO_(2)batteries can serve as an excellent power source for Mars exploration ***,several key issues remain unresolved,such as the slow kinetics of CO_(2)reduction reaction(CRR) and CO_(2)evolution reaction(CER),the severe side reaction between Li with CO_(2),and the risk of the electrolyte combustion due to thermal runaway,all of which hinder the practical application of Li-CO_(2)batteries.

关键词： energy hinder electrolyte

High-resolution, high-speed, chromotropic color printing based on fs-laser-induced gold/graphene HSFLs

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Photonics Research 2025年第1期13卷 125-139页

作者： SHIRU JIANG WOO-BIN lee STUART ABERDEEN sang-SHIN lee Department of Electronic Engineering Kwangwoon University Nano Device Application Center Kwangwoon University

Through achieving high-spatial-frequency laser-induced periodic surface structures （HSFLs） on a gold/graphene hybrid film,we introduce a high-speed,high-resolution,and wide-gamut chromotropic color printing *** method effectively addresses the trade-off between throughput and resolution in laser *** realize Au HSFL,disordered lattice structures and high transmittance of amorphous Au （a-Au） thin film are used to overcome the rapid hot-electron diffusion and loss of plasmonic coherence typically observed on low-loss metal surfaces,*** with crystallization in Au and modulated surface plasmon polaritons by artificial"seed"pre-structure growing in a SiO2/Si substrate,HSFL emerged with a period of 100 nm on crystalline Au after single and rapid femtosecond laser *** equips the proposed color printing with highresolution and high-speed features *** addition,the crystallization process is demonstrated to initiate change in the complex refractive index of Au,which causes wide-gamut *** chromotropic capability,which facilitates the background color to be tailored in color as well as into desirable shapes independently,enables three-level anti-counterfeiting based on the proposed color ***,the proposed color printing is amenable for practical implementation in diverse applications,including security marking and data storage,ranging from nanoscale to large-scale fabrication.?2024 Chinese Laser Press

关键词： Chemical vapor deposition Electron beam lithography Localized surface plasmon resonance Scanning electron microscopy Thin films Ultrafast lasers

Nasal cavity fungus ball discovered accidentally:A case report

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World Journal of Clinical Cases 2025年第5期13卷 44-48页

作者： Dae-Neung lee Dong Hoon lee sang Chul Lim Department of Otolaryngology-Head and Neck Surgery Chonnam National University Medical SchoolChonnam National University Hwasun HospitalHwasun 58128South Korea Department of Otolaryngology-Head and Neck Surgery Chonnam National University Medical SchoolHwasun HospitalChonnam National University Hwasun HospitalHwasun 58128South Korea Department of Otolaryngology-Head and Neck Surgery Chonnam National University Medical SchoolKwangju 501190South Korea

BACKGROUND Fungal balls within the nasal cavity are an exceedingly rare clinical entity,typically presenting with nonspecific symptoms or being identified *** SUMMARY This report presents an incidental discovery of a fungal ball in the nasal cavity during routine imaging,with no associated clinical *** This case underscores the importance of considering the possibility of asympto-matic presentations of nasal fungal balls,which may be detected incidentally during imaging evaluations.

关键词： Fungi Mycoses Fungus ball Nasal cavity Nasal surgical procedures Case report

Cellulose Elementary Fibrils as Deagglomerated Binder for High-Mass-Loading Lithium Battery Electrodes

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Nano-Micro Letters 2025年第5期17卷 281-296页

作者： Young-Kuk Hong Jung-Hui Kim Nag-Young Kim Kyeong-Seok Oh Hong-I Kim Seokhyeon Ryu Yumi Ko Ji-Young Kim Kwon-Hyung lee sang-Young lee Department of Chemical and Biomolecular Engineering Yonsei University50 Yonsei-RoSeodaemun-GuSeoul 03722Republic of Korea Advanced Analysis and Data Center Korea Institute of Science and Technology(KIST)Seoul 02792Republic of Korea Ulsan Advanced Energy Technology R&D Center Korea Institute of Energy Research(KIER)Ulsan 44776Republic of Korea Department of Battery Engineering Yonsei University50 Yonsei-RoSeodaemun-GuSeoul 03722Republic of Korea

Amidst the ever-growing interest in high-mass-loading Li battery electrodes,a persistent challenge has been the insufficient continuity of their ion/electron conduction ***,we propose cellulose elementary fibrils(CEFs)as a class of deagglomerated binder for high-mass-loading *** from natural wood,CEF represents the most fundamental unit of cellulose with nanoscale *** preparation of the CEFs involves the modulation of intermolecular hydrogen bonding by the treatment with a proton acceptor and a hydrotropic *** elementary deagglomeration of the cellulose fibers increases surface area and anionic charge density,thus promoting uniform dispersion with carbon conductive additives and suppressing interfacial side reactions at ***,a homogeneous redox reaction is achieved throughout the *** resulting CEF-based cathode(overlithiated layered oxide(OLO)is chosen as a benchmark electrode active material)exhibits a high areal-mass-loading(50 mg cm^(-2),equivalent to an areal capacity of 12.5 mAh cm^(-2))and a high specific energy density(445.4 Wh kg–1)of a cell,which far exceeds those of previously reported OLO *** study highlights the viability of the deagglomerated binder in enabling sustainable high-mass-loading electrodes that are difficult to achieve with conventional synthetic polymer binders.

关键词： Cellulose elementary fibrils Deagglomeration Electrode binders Lithium batteries High-mass-loading

RGB Color-Discriminable Photonic Synapse for Neuromorphic Vision System

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Nano-Micro Letters 2025年第4期17卷 39-62页

作者： Bum Ho Jeong Jaewon lee Miju Ku Jongmin lee Dohyung Kim Seokhyun Ham Kyu-Tae lee Young-Beom Kim Hui Joon Park Department of Organic and Nano Engineering&Human-Tech Convergence Program Hanyang UniversitySeoul 04763Korea Department of Semiconductor Engineering Hanyang UniversitySeoul 04763Korea Department of Mechanical Engineering Hanyang UniversitySeoul 04763Korea Department of Physics Inha UniversityIncheon 22212Korea

To emulate the functionality of the human retina and achieve a neuromorphic visual system,the development of a photonic synapse capable of multispectral color discrimination is of paramount ***,attaining robust color discrimination across a wide intensity range,even irrespective of medium limitations in the channel layer,poses a significant ***,we propose an approach that can bestow the color-discriminating synaptic functionality upon a three-terminal transistor flash memory even with enhanced discriminating *** incorporating the strong induced dipole moment effect at the excitation,modulated by the wavelength of the incident light,into the floating gate,we achieve outstanding RGB color-discriminating synaptic functionality within a remarkable intensity range spanning from 0.05 to 40 mW cm^(-2).This approach is not restricted to a specific medium in the channel layer,thereby enhancing its *** effectiveness of this color-discriminating synaptic functionality is demonstrated through visual pre-processing of a photonic synapse array,involving the differentiation of RGB channels and the enhancement of image contrast with noise ***,a convolutional neural network can achieve an impressive inference accuracy of over 94%for Canadian-Institute-For-Advanced-Research-10 colorful image recognition task after the *** proposed approach offers a promising solution for achieving robust and versatile RGB color discrimination in photonic synapses,enabling significant advancements in artificial visual systems.

关键词： Organic field-effect transistor Photonic synapse Excited-state dipole moment RGB color discrimination Neuromorphic visual system

第74届世界铸造大会将推迟到2022年10月16-20日举办

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铸造设备与工艺 2020年第2期 14-14页

作者： Hyun-IK Cho sang-mok lee 韩国铸造学会第74届WFC大会

世界铸造大会(WFC)由世界铸造组织(简称WFO)主办,每两年召开一届。原定于2020年10月18日-22日在韩国釜山举办的“第74届世界铸造大会”受新冠疫情影响,将推迟到2022年10月16-20日举办。会议推迟声明:我们代表第74届世界铸造大会组委会,... 详细信息

世界铸造大会(WFC)由世界铸造组织(简称WFO)主办,每两年召开一届。原定于2020年10月18日-22日在韩国釜山举办的“第74届世界铸造大会”受新冠疫情影响,将推迟到2022年10月16-20日举办。会议推迟声明:我们代表第74届世界铸造大会组委会,在世界铸造组织(WFO)和韩国铸造学会的大力支持下,遗憾的宣布,由于目前COVID-19的大流行,第74届世界铸造大会(WFC)将推迟至2022年10月16-20日在相同地点,韩国釜山的BEXCO中心举办。这次延期是基于当前困难时期旅行的不确定性、今年或明年旅行的负面感觉(包括注册),以及考虑到2021年WFO的许多预先确定的日程和活动,谨慎做出的决定。有关组织/解散委员会成员,全体发言人,受邀发言人,注册人员的详细信息,以及与提交论文,期刊,参展商,赞助商和媒体相关的政策等,在详细检查每个项目后,我们将在最早的时间表上发布。对于因第74届WFC的推迟而给您带来的任何不便,我们深表歉意。在此困难时刻,为了您和家人的安全,请接受我们美好的祝愿。非常感谢您。

关键词：韩国釜山铸造学会铸造组织注册人员参展商时间表 WFC 不确定性

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第74届世界铸造大会推迟至2022年举办

铸造工程 2020年第6期44卷 57-57页

作者： Hyun-IK Cho sang-mok lee 韩国铸造学会

受新冠疫情影响,原定于2020年10月18~22日在韩国釜山举办的“第74届世界铸造大会”将推迟至2022年10月16~20日举办。世界铸造大会(WFC)由世界铸造组织(WFO)主办,每两年召开一届。会议推迟声明:我们代表第74届世界铸造大会组委会,在世界... 详细信息

受新冠疫情影响,原定于2020年10月18~22日在韩国釜山举办的“第74届世界铸造大会”将推迟至2022年10月16~20日举办。世界铸造大会(WFC)由世界铸造组织(WFO)主办,每两年召开一届。会议推迟声明:我们代表第74届世界铸造大会组委会,在世界铸造组织(WFO)和韩国铸造学会的大力支持下,遗憾地宣布,由于目前COVID-19的大流行,第74届世界铸造大会(WFC)将推迟至2022年10月16~20日在韩国釜山的BEXCO中心举办。

关键词：铸造组织铸造学会韩国釜山 WFC 世界铸造大会推迟