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Photonics Research 2022年第5期10卷 1202-1209页

作者： YOON-SOO JANG JINKANG LIM WENTING WANG seung-WOO kim ANATOLIY SAVCHENKOV ANDREY BMATSKO CHEE WEI WONG Fang Lu Mesoscopic Optics and Quantum Electronics Laboratory University of CaliforniaLos AngelesCalifornia 90095USA Division of Physical Metrology Korea Research Institute of Standards and Science(KRISS)Daejeon 34113Republic of Korea CACI-LGS Labs Florham ParkNew Jersey 07932USA Department of Mechanical Engineering Korea Advanced Institute of Science and Technology(KAIST)Daejeon 34141Republic of Korea OEwaves Inc. PasadenaCalifornia 91107USA Jet Propulsion Laboratory California Institute of TechnologyPasadenaCalifornia 91109USA

Tracing a resonance frequency of a high quality factor(Q)optical cavity facilitates subpicometer displacement measurements of the optical cavity via Pound-Drever-Hall(PDH)locking scheme,tightly synchronizing a laser frequency to the optical *** we present observations of subfemtometer displacements on a ultrahigh-Q single-crystal MgF_(2)whispering-gallery-mode microcavity by frequency synchronization between a 1 Hz cavity-stabilized laser and a resonance of the MgF_(2) cavity using PDH laser-cavity *** characterize not only the displacement spectral density of the microcavity with a sensitivity of 1.5×10^(-16) m/Hz^(1/2) over the Fourier offset frequency ranging from 15 mHz to 100 kHz but also a 1.77 nm displacement fluctuation of the microcavity over 4500 *** measurement capability not only supports the analysis of integrated thermodynamical and technical cavity noise but allows for minute displacement measurements using laser-cavity locking for ultraprecise positioning,metrology,and sensing.

关键词： synchronization displacement cavity

Development of dilated cardiomyopathy with a long latent period followed by viral fulminant myocarditis:A case report

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World Journal of Clinical Cases 2022年第36期10卷 13451-13457页

作者： seung Do Lee Hyo Jin Lee Hye Ree kim Min Gyu Kang Kyehwan kim Jeong Rang Park Division of Cardiology Department of Internal MedicineGyeongsang National University School of Medicine and Gyeongsang National University HospitalJinju 52727South Korea

BACKGROUND The clinical course of acute myocarditis ranges from the occurrence of a few symptoms to the development of fatal fulminant ***,fulminant myocarditis causes clinical deterioration very rapidly and *** long-term prognosis of myocarditis is varied,and it fully recovers without leaving any special ***,even after recovery,heart failure may occur and eventually progress to dilated cardiomyopathy(DCM),which causes serious left ventricular *** the case of follow-up observation,no clear guidelines have been *** SUMMARY We report the case of a 21-year-old woman who presented with *** became hemodynamically unstable and showed sustained fatal arrhythmias with decreased heart *** was clinically diagnosed with fulminant myocarditis based on her echocardiogram and cardiac magnetic resonance *** 2 d,she was readmitted to the emergency department under cardiopulmonary resuscitation and received mechanical ventilation and extracorporeal membrane *** implantable cardioverter defibrillator was inserted for secondary *** recovered and was *** to being hospitalized for sudden cardiac function decline and arrhythmia,she had been well for 7 years without any *** was finally diagnosed with dilated *** DCM may develop unexpectedly in patients who have been cured of acute fulminant myocarditis and have been stable with a long period of ***,they should be carefully and regularly observed clinically throughout long-term follow-up.

关键词： Myocarditis Fulminant Dilated cardiomyopathy Outcome Remission Case report

A compact polymer–inorganic hybrid gas barrier nanolayer for flexible organic light-emitting diode displays

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npj Flexible Electronics 2022年第1期6卷 204-209页

作者： seung Hun kim seung Yong Song Soo Youn kim Moon Won Chang Hyo Jeong Kwon Kwan Hyuck Yoon Woo Yong Sung Myung Mo Sung Hye Yong Chu Display Research Center Samsung DisplayYongin-siGyeonggi-do 17113Republic of Korea Department of Chemistry Hanyang UniversitySeoul 04763Republic of Korea

Atomic layer infiltration technology allows the formation of a nanometer-thick polymer-inorganic hybrid barrier layer in polymer material for flexible organic light-emitting diode(OLED)*** this study,according to transmission electron microscopy and secondary-ion mass spectrometry analysis results under various process conditions,a compact polymer-inorganic hybrid nanolayer was successfully formed in a polymer and good barrier performance was revealed with a low water vapor transmission rate under optimal process ***,through gas chromatography-mass spectrometry measurements after ultra-violet radiation testing,polymer out-gassing decreased compared to bare *** on barrier properties,the polymer with a polymer-inorganic hybrid barrier nanolayer was applied to a flexible OLED display as a *** storage tests and folding tests,the flexible OLED display exhibits good reliability and better flexibility compared to those with an inorganic barrier *** results confirm that the polymer-inorganic hybrid nanolayer is suitable for barrier layer formation in flexible OLED displays.

关键词： diode barrier layer

The role of complement C5a receptor in DPSC odontoblastic differentiation and in vivo reparative dentin formation

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International Journal of Oral Science 2022年第1期14卷 71-79页

作者： Muhammad Irfan Ji-Hyun kim Hassan Marzban David AReed Anne George Lyndon FCooper seung Chung Department of Oral Biology University of Illinois at ChicagoChicagoUSA Department of Human Anatomy and Cell Science University of ManitobaWinnipegCanada

Therapeutic dentin regeneration remains difficult to achieve,and a majority of the attention has been given to anabolic strategies to promote dentinogenesis directly,whereas,the available literature is insufficient to understand the role of inflammation and inflammatory complement system on *** aim of this study is to determine the role of complement C5a receptor(C5aR)in regulating dental pulp stem cells(DPSCs)differentiation and in vivo dentin *** DPSCs were subjected to odontogenic differentiation in osteogenic media treated with the C5aR agonist and C5aR *** vivo dentin formation was evaluated using the dentin injury/pulp-capping model of the C5a-deficient and wildtype *** vitro results demonstrate that C5aR inhibition caused a substantial reduction in odontogenic DPSCs differentiation markers such as DMP-1 and DSPP,while the C5aR activation increased these key odontogenic genes compared to control.A reparative dentin formation using the C5a-deficient mice shows that dentin regeneration is significantly reduced in the C5a-deficient *** data suggest a positive role of C5aR in the odontogenic DPSCs differentiation and tertiary/reparative dentin *** study addresses a novel regulatory pathway and a therapeutic approach for improving the efficiency of dentin regeneration in affected teeth.

关键词： C5a vivo inflammation

Influence of sulfides on the tribological properties of composites produced by pulse electric current sintering

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International Journal of Minerals,Metallurgy and Materials 2014年第1期21卷 95-103页

作者： seung Ho kim Department of Electronics Engineering Dankook University

Self-lubricating A1203-15wt% ZrO2 composites with sulfides, such as molybdenum disulfide （MoS2） and tungsten disulfide （WSz） serving as solid lubricants, were fabricated by using the pulse electric current sintering （PECS） technique. The coefficient of friction （COF） of the A1203-15wt% ZrO2 composite without/with sulfides was in the range of 0.37-0.48 and 0.27-0.49, respectively. As the amoant of sul- fides increased, the COF and the wear rate decreased. The reduction in COF and wear rate of the sulfide-containing composite is caused by a reduction in shear stresses between the specimen and the tribological medium due to the formation of a lubricating film resulting from the lamellar structure of sulfides located on the worn surface.

关键词： ceramic composites coefficient of friction solid lubricants sulfides wear of materials

Nanowire-assisted freestanding liquid metal thin-film patterns for highly stretchable electrodes on 3D surfaces

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npj Flexible Electronics 2022年第1期6卷 956-963页

作者： Minwoo kim Chulmin Cho Wooseop Shin Jung Jae Park Jaewon kim Phillip Won Carmel Majidi seung Hwan Ko Applied Nano and Thermal Science Lab Department of Mechanical EngineeringSeoul National UniversitySeoulGwanak-guKorea Mechatronics Research Samsung ElectronicsHwaseong-siGyeonggi-doKorea Soft Machines Lab Department of Mechanical EngineeringCarnegie Mellon UniversityPittsburghPAUSA Institute of Advanced Machines and Design/Institute of Engineering Research Seoul National UniversitySeoulKorea

Stretchable electronics is playing an integral role in fields such as wearable electronics and soft *** soft conductive materials,liquid metal is drawing intense attention as an electrode material due to its liquid nature at room ***,the merits of liquid metal conductor are limited by the presence of substrates or enclosed microchannels from physical disturbances by the underlying substrate when applying it to 3D surface and modifying complex *** overcome this limitation,we develop freestanding patterned liquid metal thin-film conductor(FS-GaIn).FS-GaIn was achieved by introducing metal nanowires to liquid metal and subsequent sequential selective laser processing and etching of directly patterned *** can be applied directly to nonflat surface without *** incorporated into electrical circuits,FS-GaIn shows high electrical conductivity,stretchability,and *** concept of freestanding liquid metal can open a functionality to the conventional liquid metal electronics.

关键词： liquid film free

High-performance solid-solution potassium-ion intercalation mechanism of multilayered turbostratic graphene nanosheets

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Journal of Energy Chemistry 2022年第4期31卷 814-823页

作者： Jiae Um seung Uk Yoon Hoseong kim Beom Sik Youn Hyoung-Joon Jin Hyung-Kyu Lim Young Soo Yun Program in Environmental and Polymer Engineering Inha Universityncheon 22212 South Korea Department of Polymer Science and Engineering Inha UniversityIncheon 22212South Korea Division of Chemical Engineering and Bioengineering Kangwon National University Chuncheon Gangwon-do 24341 South Korea KU-KIST Graduate School of Converging Science and Technologyea University 145 Anam-roSeongbuk-guSoul02841 South Korea Department of Integrative Energy Engineering 145 Anam-roSongbuk-guKorea UniversitySeoul 02841 South Korea

The solid-solution reaction between an alkali cation and an active host material is known as a singlephase redox mechanism,and it is typically accompanied by a continuous voltage *** is distinct from the typical alkali cation intercalation reaction at an equivalent site of the active host material,which exhibits a voltage ***,we report an unusual solid-solution potassium-ion intercalation mechanism with a low-voltage plateau capacity on multilayered turbostratic graphene nanosheets(T-GNSs).Despite the disordered graphitic structure with a broad range of d-spacings(3.65–4.18À),the T-GNSs showed a reversible plateau capacity of~200 m A h g^(-1),which is higher than that of a well-ordered graphite nanoplate(~120 m A h g^(-1)).In addition,a sloping capacity of~220 m A h g^(-1)was delivered with the plateau capacity,and higher rate capabilities,better reversibility,and a more stable cycling performance were confirmed on the turbostratic ***-principles calculations suggest that the multitudinous lattice domains of the T-GNSs contain diverse intercalation sites with strong binding energies,which could be the origin of the high-performance solid-solution potassium-ion intercalation behavior when the turbostratic graphene stacks have a d-spacing smaller than that of equilibrium potassium–graphite intercalation compounds(5.35À).

关键词： Turbostratic graphite Graphene nanosheet Defective carbon Anode Potassium-ion batteries

Construction of a 980 nm laser-activated Pt(Ⅱ)metallacycle nanosystem for efficient and safe photo-induced bacteria sterilization

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Science China Chemistry 2023年第1期66卷 155-163页

作者： Yuling Xu Chonglu Li Jusung An Xin Ma Jingfang Yang Lishi Luo Yun Deng Jong seung kim Yao Sun Key Laboratory of Pesticides and Chemical Biology Ministry of EducationInternational Joint Research Center for Intelligent Biosensor Technology and HealthCollege of ChemistryCentral China Normal UniversityWuhan 430079China Department of Chemistry KoreaUniversitySeoul 02841Republic of Korea Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules Hubei UniversityWuhan 430062China State Key Laboratory of Chemo/Biosensing and Chemometrics Hunan UniversityChangsha 410082China Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education Jianghan UniversityWuhan 430056China

Although metal-based chemical agents have demonstrated promising bacteriostatic effects in phototherapy,their short excitation/emission wavelengths and inadequate phototherapy efficiencies make their application in vivo *** therefore synthesized a novel Pt(Ⅱ)metallacycle(Pt1110)that can be activated with a 980 nm laser for photodiagnosis/treatment in deep *** found that Pt1110 significantly improved photothermal conversion(95%improvement)and ^(1)O_(2) generation(ΦΔ75%increase)compared to the ligand itself 1 and was well capable of light-induced sterilization under safe laser irradiation(0.72 W/cm^(2)).In addition,Pt1110 has little to no toxicity to *** incorporated into liposome,Pt1110 NPs was effective in wound healing in infection and keratitis models upon laser irradiation,which was accurately observed by NIR-Ⅱfluorescence *** novel metal-coordinated supramolecular material has a potential to become a universal platform for phototherapy in deep tissue.

关键词： supramolecular chemistry metallacycle NIR-Ⅱfluorescence imaging phototheranostics deep penetration

Atypical case of bow hunter’s syndrome linked to aberrantly coursing vertebral artery: A case report

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World Journal of Clinical Cases 2023年第35期11卷 8399-8403页

作者： Jun Hyong Ahn Hyo Sub Jun In Kyeong kim Choong Hyo kim seung Jin Lee Department of Neurosurgery Kangwon National University School of MedicineKangwon National University HospitalGangwon-doChuncheon-si 24289South Korea

BACKGROUND In bow hunter’s syndrome(BHS),also known as rotational vertebral artery(VA)syndrome,there is dynamic/rotational compression of the VA producing verte-brobasilar *** occurrences involve atlantoaxial rather than mid-cervical VA compromise,the latter being rarely ***,we detail successful VA decompression at mid-cervical spine,given a departure from its usual *** SUMMARY The patient,a 45-year-old man,presented to our hospital with occipital headache and *** tomography angiography showed anomalous C4 entry of right VA,with compression upon head rotation to that *** cartilage and anterior tubercle of C5 transverse process were visibly at *** opted for sur-gery,using an anterior cervical approach to remove the anterior *** recovery was uneventful and brought resolution of all preoperative *** BHS is an important consideration where aberrant coursing of VA and neurologic symptoms coexist.

关键词： Bow hunter’s syndrome Vertebral artery Vertebrobasilar insufficiency Case report

Defect engineering of ternary Cu-In-Se quantum dots for boosting photoelectrochemical hydrogen generation

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Carbon Energy 2023年第12期5卷 215-228页

作者： Shi Li Sung-Mok Jung Wookjin Chung Joo-Won Seo Hwapyong kim Soo Ik Park Hyo Cheol Lee Ji Su Han seung Beom Ha In Young kim Su-Il In Jae-Yup.kim Jiwoong Yang Department of Energy Science and Engineering Daegu Gyeongbuk Institute of Science and Technology(DGIST)DaeguRepublic of Korea Department of Chemical Engineering Dankook UniversityYonginRepublic of Korea Department of Chemistry and Nanoscience College of Natural ScienceEwha Womans UniversitySeoulRepublic of Korea Energy Science and Engineering Research Center Daegu Gyeongbuk Institute of Science and Technology(DGIST)DaeguRepublic of Korea

Heavy-metal-free ternary Cu–In–Se quantum dots(CISe QDs)are promising for solar fuel production because of their low toxicity,tunable band gap,and high light absorption *** defects significantly affect the photophysical properties of QDs,the influence on photoelectrochemical hydrogen production is not well ***,we present the defect engineering of CISe QDs for efficient solar-energy *** acid–base reactions between metal halide–oleylamine complexes and oleylammonium selenocarbamate are modulated to achieve CISe QDs with the controlled amount of Cu vacancies without changing their *** them,CISe QDs with In/Cu=1.55 show the most outstanding photoelectrochemical hydrogen generation with excellent photocurrent density of up to 10.7 mA cm-2(at 0.6 VRHE),attributed to the suitable electronic band structures and enhanced carrier concentrations/lifetimes of the *** proposed method,which can effectively control the defects in heavy-metal-free ternary QDs,offers a deeper understanding of the effects of the defects and provides a practical approach to enhance photoelectrochemical hydrogen generation.

关键词： copper-indium-selenide defect engineering photoelectrochemical hydrogen generation quantum dots solar hydrogen