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Nano-Micro Letters 2025年第2期17卷 169-186页

作者： Bitgaram kim Myeong‑Ch.ng Sung gwang‑h.e Lee Byoungjoon h.ang Sojung Seo Ji‑h.n Seo Dong‑Wan kim Department of Materials Science and Engineering Korea University145 Anam‑RoSeongbuk‑GuSeoul 02841Republic of Korea Sch.ol of Civil Environmental and Architectural EngineeringKorea University145 Anam‑RoSeongbuk‑GuSeoul 02841Republic of Korea Materials Science and Ch.mical Engineering Center Institute for Advanced Engineering(IAE)Yongin 17180Republic of Korea

A critical ch.llenge h.ndering th. practical application of lith.um–oxygen batteries(LOBs)is th. inevitable problems associated with.liquid electrolytes,such.as evaporation and safety *** study addresses th.se problems by proposing a modified polyrotaxane(mPR)-based solid polymer electrolyte(SPE)design th.t simultaneously mitigates solvent-related problems and improves ***-SPE exh.bits h.gh.ion conductivity(2.8×10^(−3)S cm^(−1)at 25℃)th.ough.aligned ion conduction path.ays and provides electrode protection ability th.ough.h.droph.bic ch.in *** th.s mPR-SPE into solid-state LOBs resulted in stable potentials over 300 *** situ Raman spectroscopy reveals th. presence of an LiO_(2)intermediate alongside Li_(2)O_(2)during oxygen *** situ X-ray diffraction confirm th. ability of th. SPE to h.nder th. permeation of oxygen and moisture,as demonstrated by th. air permeability *** present study suggests th.t maintaining a low residual solvent wh.le ach.eving h.gh.ionic conductivity is crucial for restricting th. sub-reactions of solid-state LOBs.

关键词： Solid polymer electrolyte Lith.um-oxygen batteries Polyrotaxane ion conductivity h.droph.bic ch.in

On th. Stability of th. Generalized Sine Functional Equations

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Acta Math.matica Sinica,English.Series 2009年第1期25卷 29-38页

作者： gwang h.i kim Department of Applied Math.matics Kangnam University

Th. aim of th.s paper is to study th. stability problem of th. generalized sine functional equations as follows：g（x）f（y）=f（x＋y/2）^2-f（x-y/2）^2 f（x）g（y）=f（x＋y/2）^2-f（x-y/2）^2,g（x）g（y）=f（x＋y/2）... 详细信息

关键词： stability superstability sine functional equation cosine functional equation.

Endoscopic submucosal dissection for early gastric cancer:It is time to consider th. quality of its outcomes

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World Journal of Gastroenterology 2023年第43期29卷 5800-5803页

作者： gwang h. kim Internal Medicine Pusan National University School of Medicine and Biomedical Research InstitutePusan National University HospitalBusan 47241South Korea

Endoscopic resection,particularly endoscopic submucosal dissection(ESD),is widely used as a standard treatment modality for early gastric cancer(EGC)wh.n th. risk of lymph.node metastasis is *** with.surgical gastrectomy,ESD is a minimally invasive procedure with.additional advantages,such.as preservation of th. entire stomach.and maintenance of th. patient’s quality of ***,not all patients ach.eve curative resection after ESD of *** patients require surgical gastrectomy after ESD to ach.eve a curative *** surgery after ESD,owing to non-curative resection,places considerable emotional and financial burdens on ***,as th. number of endoscopists performing ESD h.s increased,th. rate of non-curative resection after ESD h.s increased *** order to decrease th. non-curative resection rate,as well as determine th. ideal rate of non-curative resection after ESD,it is time to consider quality indicators for th. outcomes of ESD for EGC.

关键词： Early gastric cancer Endoscopic resection Quality indicator

Globus ph.ryngeus:A review of its etiology,diagnosis and treatment

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World Journal of Gastroenterology 2012年第20期18卷 2462-2471页

作者： Bong Eun Lee gwang h. kim Department of Internal Medi cine Pusan National University School of Medicine and Biomedical Research InstitutePusan National University Hospital Busan 602-739South Korea

Globus is a persistent or intermittent non-painful sensation of a lump or foreign body in th. *** is a commonly encountered clinical condition th.t is usually long-lasting,difficult to treat,and h.s a tendency to ***,due to th. uncertain etiology of globus,it remains difficult to establish.standard investigation and treatment strategies for affected patients. As a first step for managing globus,careful h.story taking and nasolaryngoscopy are *** th. benign nature of th. condition and th. recent notion th.t gastroesoph.geal reflux disease is a major cause of globus,empirical th.rapy with.a h.gh.dose of proton pump inh.bitors is reasonable for patients with.typical *** patients are nonresponsive to th.s th.rapy, definitive assessments such.as endoscopy,multich.nnel intraluminal impedance/ph.monitoring,and ma-nometry sh.uld be *** and language th.rapy,anti-depressants,and cognitive-beh.vioral th.rapy can be h.lpful in patients wh.se symptoms persist despite negative investigations.

关键词： Diagnosis Gastroesoph.geal reflux disease Globus Proton pump inh.bitor Treatment

Scalable Ir‑Doped NiFe_(2)O_(4)/TiO_(2)h.terojunction Anode for Decentralized Saline Wastewater Treatment and h.(2)Production

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Nano-Micro Letters 2025年第3期17卷 1-18页

作者： Sukh.a h.ng Jiseon kim Jaebeom Park Sunmi Im Mich.el R.h.ffmann Kangwoo Ch. Division of Environmental Science and Engineering Pohang University of Science and Technology(POSTECH)Pohang 790−784Korea Linde Laboratory California Institute of TechnologyPasadenaCA 91125USA Institute for Convergence Research.and Education in Advanced Tech.ology(I‑CREATE) Yonsei University International CampusIncheon 21983Republic of Korea

Wastewater electrolysis cells(WECs)for decentralized wastewater treatment/reuse coupled with.h.(2)production can reduce th. carbon footprint associated with.transportation of water,waste,and energy *** study reports Ir-doped NiFe_(2)O_(4)(NFI,~5 at%Ir)spinel layer with.TiO_(2)overlayer(NFI/TiO_(2)),as a scalable h.terojunction anode for direct electrolysis of wastewater with.circumneutral ph.in a single-compartment *** dilute(0.1 M)NaCl solutions,th. NFI/TiO_(2)marks superior activity and selectivity for ch.orine evolution reaction,outperforming th. bench.ark IrO_(2).Robust operation in near-neutral ph.was *** including operando X-ray absorption spectroscopy unveiled crucial roles of TiO_(2) wh.ch.serves both.as th. primary site for Cl−ch.misorption and a protective layer for NFI as an oh.ic *** electrolysis of Nh.+-laden synth.tic wastewater demonstrated th.t NFI/TiO_(2)not only ach.eves quasi-stoich.ometric Nh.(4)^(+)-to-N_(2)conversion,but also enh.nces h.(2)generation efficiency with.minimal competing reactions such.as reduction of dissolved oxygen and reactive *** scaled-up WEC with.NFI/TiO_(2)was demonstrated for electrolysis of toilet wastewater.

关键词： Wastewater electrolysis cell Ir-doped NiFe_(2)O_(4) Reactive ch.orine species Decentralized h.(2)production On-site wastewater treatment

Recent Advances in Patterning Strategies for Full‑Color Perovskite Ligh.‑Emitting Diodes

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Nano-Micro Letters 2024年第3期16卷 99-137页

作者： gwang h.on Lee Kiwook kim Yunh. kim Jiwoong Yang Moon Kee Ch.i Graduate Sch.ol of Semiconductor Materials and Devices Engineering Center for Future Semiconductor Technology(FUST)Ulsan National Institute of Science and Technology(UNIST)Ulsan 44919Republic of Korea Department of Energy Science and Engineering Daegu Gyeongbuk Institute of Science and Technology(DGIST)Daegu 42988Republic of Korea Energy Science and Engineering Research.Center Daegu Gyeongbuk Institute of Science and Technology(DGIST)Daegu 42988Republic of Korea Department of Materials Science and Engineering Ulsan National Institute of Science and Technology(UNIST)Ulsan 44919Republic of Korea Center for Nanoparticle Research Institute for Basic Science(IBS)Seoul 08826Republic of Korea

Metal h.lide perovskites h.ve emerged as promising ligh.-emitting materials for next-generation displays owing to th.ir remarkable material ch.racteristics including broad color tunability,pure color emission with.remarkably narrow bandwidth.,h.gh.quantum yield,and solution *** recent advances h.ve push.d th. luminance efficiency of monoch.omic perovskite ligh.-emitting diodes(PeLEDs)to th.ir th.oretical limits,th.ir current fabrication using th. spincoating process poses limitations for fabrication of full-color *** integrate PeLEDs into full-color display panels,it is crucial to pattern red–green–blue(RGB)perovskite pixels,wh.le mitigating issues such.as cross-contamination and reductions in luminous ***,we present state-of-th.-art patterning tech.ologies for th. development of full-color ***,we h.gh.igh. recent advances in th. development of efficient ***,we discuss various patterning tech.iques of MPh.(i.e.,ph.tolith.graph.,inkjet printing,electron beam lith.graph. and laserassisted lith.graph.,electroh.drodynamic jet printing,th.rmal evaporation,and transfer printing)for fabrication of RGB pixelated *** patterning tech.iques can be classified into two distinct approach.s:in situ crystallization patterning using perovskite precursors and patterning of colloidal perovskite *** review h.gh.igh.s advancements and limitations in patterning tech.iques for PeLEDs,paving th. way for integrating PeLEDs into full-color panels.

关键词： Perovskite Ligh.-emitting diode Full-color display h.gh.resolution patterning Electroluminescence

Anomalously Strong Scattering of Spontaneously Produced Laser Radiation in th. First Free-Electron Laser and Study of Free-Electron Two-Quantum Stark Lasing in an Electric Wiggler with.Quantum-Wiggler Electrodynamics

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Ch.nese Ph.sics Letters 2006年第6期23卷 1422-1425页

作者： S. h. kim Department of Ph.sics University of Texas at Arlington PO Box 19059 Arlington Texas 76019 USA

We calculate th. scattering cross section of an electron with.respect to th. spontaneously produced laser radiation in th. first free-electron laser （FEL） with.quantum-wiggler electrodynamics （QWD）. Th. cross section is 1016 times th. Th.mson cross section, confirming th. result obtained by a previous analysis of th. experimental data. A QWD calculation sh.w th.t spontaneous emission in an FEL using only an electric wiggler can be very strong wh.le amplification th.ough.net stimulated emission is practically negligible.

关键词： CLASSICAL ELECTRODYNAMICS RELATIVISTIC ELECTRONS Th.RMODYNAMICS EXPLANATION EMISSION

Electric-Wiggler-Enh.nced Th.ee-Quantum Scattering and th. Output Power Affected by th.s Scattering in a Free-Electron Laser

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Ch.nese Ph.sics Letters 2009年第1期26卷 58-61页

作者： S. h. kim 6300 Roundrock Trail #4203 Piano Texas 75023 USA

We derive th. cross section of scattering th.ough.th. th.ee-quantum interaction of an electron with.th. incident laser field, th. emitted ph.ton, and an axial electrostatic field produced by th. magnetic wiggler in th. magnetic wiggler acting as th. sole zeroth.order perturbing classical field in th. first free-electron laser （FEL）. In th. derivation, we apply quantum-wiggler electrodynamics （QWD）. We find th.t th.s scattering predominates th. usual two-quantum scattering. Th. output power of spontaneous free-electron two-quantum Stark emission driven by th. above electrostatic field attenuated by th. th.ee-quantum scattering agrees with.n a factor of 10 with.th. measured power in th. case of th. first FEL.

关键词： field emission molybdenum dioxide enh.ncement factor

Ch.cken soup for teach.ng and learning ESD

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World Journal of Gastroenterology 2011年第21期17卷 2618-2622页

作者： Eun Young kim Seong Woo Jeon gwang h. kim Division of Gastroenterology Department of Internal MedicineCatholic University of Daegu School of Medicine Division of Gastroenterology Department of Internal MedicineKyungpook National University School of Medicine Department of Internal Medicine Pusan National University School of Medicine and Medical Research InstitutePusan National University Hospital

Endoscopic submucosal dissection(ESD) is becoming a popular procedure for th. diagnosis and treatment of superficial mucosal lesions,and h.s th. advantage of en bloc resection wh.ch.yields a h.gh.r complete resection and remission rate compared to endoscopic mucosal resection(EMR).h.wever,th. learning process of th.s advanced endoscopic procedure requires a length. training period and considerable experience to be proficient.A well framed training protocol wh.ch.is safe,effective,easily reproducible and cost-effective is desirable to teach.*** addition,th. training course may need to be tailored around settings such.as eth.icity,culture,workload,and disease *** Asian countries with.a large volume of early gastric lesions wh.ch.need endoscopic treatment,endoscopists would be able to learn ESD expanding th.ir skills from EMR to ESD under th. supervision of ***,in Western countries due to th. low incidence of superficial gastric tumors,trials h.ve utilized simulator models to improve *** Korea,th. Korean Society of Gastrointestinal Endoscopy(KSGE) is playing an important role in training many gastroenterologists wh. h.ve sh.wn an interest in performing ESD by providing an annual live demonstration and a nationwide tutoring *** purpose of th.s article is to introduce our ESD tutoring experience,review th. publish.d papers related to th.s topic,and propose several suggestions for future directions in teach.ng and learning ESD.

关键词： Endoscopic submucosal dissection Learning Teach.ng

Rational strategy for power doubling of monolith.c multijunction III-V ph.tovoltaics by accommodating attach.ble scattering waveguides

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Ligh.(Science & Applications) 2024年第11期13卷 2734-2744页

作者： Sh.n h.ung Lee h.o Jin kim Jae-h.un kim gwang Yeol Park Sun-Kyung kim Sung-Min Lee Sch.ol of Electrical Engineering Korea Advanced Institute of Science and Technology(KAIST)Daejeon 34141Republic of Korea Optoelectronic Convergence Research.Center Korea Photonics Technology InstituteGwangju 61007Republic of Korea Department of Applied Ph.sics Kyung Hee UniversityYongin 17104Republic of Korea Department of Electrical Engineering Hanyang UniversitySeoul 04763Republic of Korea Division of Materials Science and Engineering Hanyang UniversitySeoul 04763Republic of Korea

Wh.le waveguide-based ligh. concentrators offer significant advantages,th.ir application h.s not been considered an interesting option for assisting multijunction or oth.r two-terminal tandem solar *** th.s study,we present a simple yet effective approach.to enh.ncing th. output power of transfer-printed multijunction InGaP/GaAs solar *** utilizing a simply combinable waveguide concentrator featuring a coplanar waveguide with.BaSO4 Mie scattering elements,we enable th. simultaneous absorption of directly illuminated solar flux and indirectly waveguided *** deployment of cells is optimized for front-surface ph.ton collection in monofacial *** systematic comparisons across various waveguide parameters,supported by both.experimental and th.oretical quantifications,we demonstrate a remarkable improvement in th. maximum output power of a 26%-efficient cell,ach.eving an enh.ncement of~93%with.th. integration of th. optimal scattering ***,a series of supplementary tests are conducted to explore th. effective waveguide size,validate enh.ncements in arrayed cell module performance,and assess th. drawbacks associated with.rear *** findings provide a compreh.nsive understanding of our proposed approach.towards advancing multi-junction ph.tovoltaics.

关键词： waveguide scattering power