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中国有色金属学会会刊：英文版 2012年第S3期22卷 707-711页

作者： sang-soo chee Jong-Hyun LEE Department of Materials Science and Engineering Seoul National University of Science and Technology

Sn nanoparticles with average diameter of 13.1 nm were synthesized by modified polyol process,and their melting point was observed to be about 40 °C less than that of bulk *** though Sn nanoparticles are solid and covered with thin PVP capping and oxide layer,Sn nanoparticles in solution agglomerate upon centrifugation,resulting in a melting point *** to stickiness of the PVP capping layer,extensive aggregation between Sn nanoparticles was observed after ***,the aggregation behavior did not further influence the melting point,because actual agglomeration did not occur in the aggregates.

关键词： tin nanoparticle melting point centrifugation agglomeration aggregation

Solution-processed highly adhesive graphene coatings for corrosion inhibition of metals

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Nano Research 2019年第1期12卷 19-23页

作者： Gi-Cheol Son Deuk-Kyu Hwang Jaewon Jang sang-soo chee Kyusang Cho Jae-Min Myoung Moon-Ho Ham School of Materials Science and Engineering Gwangju Institute of Science and Technology(GIST)123 Cheomdangwagi-roBuk-guGwangju 61005Republic of Korea Research Institute for Solar and Sustainable Energies Gwangju Institute of Science and Technology(GIST)123 Cheomdangwagi-roBuk-gut Gwangju 61005Republic cf Korea Department of Materials Science and Engineering Yonsei University50 Yonsei-roSeodaemun-guSeoul 03722Republic of Korea

The corrosion of metals can be induced by different environmental and operational conditions,and protecting metals from corrosion is a serious concern in many *** developme nt of new materials and/or tech no logies to improve the efficie ncy of anti-corrosi on coati ngs has attracted ren ewed in *** this study,we develop a protective coati ng composed of a bilayer structure of reduced graphe ne oxide(RGO)/graphene oxide(GO)applied to Cu plates by spray-coating and subsequent *** annealing of the GO/Cu plates at 120℃produces a bilayer structure of RGO/GO by the partial reducti on of the spray-coated GO *** in duces superior corrosion resista nee and adhesi on strength compared to those of GO/Cu and RGO/Cu plates because of the hydrophobic n ature of the RGO surface exposed to the surroundings and the formation of Cu-O bonds with the O-based functional groups of *** approach provides a viable and scalable route for using graphene coatings to protect metal surfaces from corrosion.

关键词： graphene metal surface coating corrosion solution process

Anode surface engineering of zinc-ion batteries using tellurium nanobelt as a protective layer for enhancing energy storage performance

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Journal of Energy Chemistry 2024年第5期92卷 113-123页

作者： soobeom Lee Yeonjin Je Boeun Seok Hyun Tae Kim Yong-Ryun Jo soong Ju Oh Byoungyong Im Dae Guen Kim sang-soo chee Geon-Hyoung An Department of Energy System Engineering Gyeongsang National UniversityJinju 52725Republic of Korea Nano Convergence Materials Center Korea Institute of Ceramic Engineering and Technology(KICET)Jinju 52851Republic of Korea Department of Materials Science and Engineering Korea UniversitySeoul 02841Republic of Korea School of Materials Science and Engineering Gyeongsang National UniversityJinju 52828Republic of Korea GIST Advanced Insitute of Instrumental Analysis(GAIA) Electron Microscopy LaboratoryGwangju Institute of Science and TechnologyGwangju 61005Republic of Korea Center for Advanced Materials and Processing Institute for Advanced EngineeringYongin 17180Republic of Korea Department of Energy Engineering Gyeongsang National UniversityJinju 52725Republic of Korea

Over the years,zinc-ion batteries(ZIBs)have attracted attention as a promising next-generation energy storage technology because of their excellent safety,long cycling performance,eco-friendliness,and high-power ***,issues,such as the corrosion and dissolution of the Zn anode,limited wet-tability,and lack of sufficient nucleation sites for Zn plating,have limited their practical *** introduction of a protective layer comprising of tellurium(Te)nanobelts onto the surface of Zn anode has emerged as a promising approach to overcome these limitations and improve the electrochemical behav-ior by enhancing the safety and wettability of ZIBs,as well as providing numerous nucleation sites for Zn *** the presence of a Te-based protective layer,the energy power density of the surface-engineered Zn anode improved significantly(ranging from 310 to 144 W h kg^(-1),over a power density range of 270 to 1,800 W kg^(-1)),and the lifespan capability was *** results demonstrate that the proposed strategy of employing Te nanobelts as a protective layer holds great promise for enhancing the energy storage performance of zIBs,making them even more attractive as a viable energy storage solution forthefuture.

关键词： Zn ion battery Anode Protective layer Tellurium Nanobelt

Charge transfer in graphene/polymer interfaces for CO2 detection

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Nano Research 2018年第7期11卷 3529-3536页

作者： Myungwoo Son Yusin Pak sang-soo chee Francis Malar Auxilia Kihyeun Kim Byung-Kee Lee Sungeun Lee Sun Kil Kang Chaedeok Lee Jeong soo Lee Ki Kang Kim Yun Hee Jang Byoung Hun Lee Gun-Young Jung Moon-Ho Ham School of Materials Science and Engineering Research Institute for Solar and Sustainable Energies Gwangju Institute of Science & Technology 723 Cheomdangwagi-ro Buk-gu Gwangju 61005 Republic of Korea Materials & Devices Advanced Research Institute LG Electronics Woomyeon R&D Campus 38 Baumoe-ro Seocho-gu Seoul 06763 Republic of Korea Department of Energy and Materials Engineering Dongguk University Seoul 04620 Republic of Korea Energy Systems Engineering Daegu Gyeongbuk Institute of Science & Technology 333 Technojungang-daero Hyeonpung-myeon Dalseong-gun Daegu 42988 Republic of Korea

Understanding charge transfer processes between graphene and functional materials is crucial from the perspectives of fundamental sciences and potential applications, including electronic devices, photonic devices, and sensors. In this study, we present the charge transfer behavior of graphene and amine-rich polyethyleneimine （PEI） upon CO2 exposure, which was significantly improved after introduction of hygroscopic polyethylene glycol （PEG） in humid air. By blending PEI and PEG, the number of protonated amine groups in PEI was remarkably increased in the presence of water molecules, leading to a strong electron doping effect on graphene. The presence of CO2 gas resulted in a large change in the resistance of PEI/PEG-co-functionalized graphene because of the dramatic reduction of said doping effect, reaching a maximum sensitivity of 32% at 5,000 ppm CO2 and an applied bias of 0.1 V in air with 60% relative humidity at room temperature. This charge transfer correlation will facilitate the development of portable graphene-based sensors for real-time gas detection and the extension of the applications of graphene-based electronic and photonic devices.

关键词： graphene polyethyleneimine (PEI) polyethylene glycol carbon dioxide charge transfer

Measurement of sub-fm/Hz^(1/2) displacement spectral densities in ultrahigh-Q single-crystal microcavities with hertz-level lasers

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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

The impact of urological resection and reconstruction on patients undergoing cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC)

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Asian Journal of Urology 2018年第3期5卷 194-198页

作者： Grace Hwei Ching Tan Nicholas B.Shannon Claramae Shulyn Chia Lui Shiong Lee Khee chee soo Melissa Ching Ching Teo Division of Surgical Oncology National Cancer Centre SingaporeSingapore Duke-NUS Medical School Singapore Department of Urology Singapore General HospitalSingapore

Objective:Cytoreductive surgery(CRS)and hyperthermic intraperitoneal chemotherapy(HIPEC)are increasingly being used to treat peritoneal *** resections and reconstruction(URR)are occasionally performed during the *** aim to evaluate the impact of these procedures on peri-operative outcomes of CRS and HIPEC ***:A retrospective review of a prospectively maintained database of all patients who underwent CRS-HIPEC from April 2001 to February 2016 was *** between patients who had surgery involving,and not involving URR were *** outcomes were the rate of major complications and the duration of stay in the intensive care unit(ICU)and *** outcomes were that of overall survival(OS)and prognostic factors that would indicate a need for ***:A total of 214 CRS-HIPEC were performed,21 of which involved a *** clinical characteristics did not vary between the groups(URR *** URR).Urological resections comprised of 52%bladder resections,24%ureteric resections,and 24%involving both bladder and ureteric *** bladder defects were closed primarily while ureteric reconstructions consisted of two end-to-end anastomoses,one ureto-uretostomy,five direct implantations into the bladder and three boari *** were more frequently required in patients with colorectal peritoneal disease(p Z 0.029),but was not associated with previous pelvic surgery(76%vs.54%,p Z 0.065).Patients with URR did not suffer more serious complications(14%vs.24%,p Z 0.42).ICU(2.2 days vs.1.4 days,p Z 0.51)and hospital stays(18 days vs.25 days,p Z 0.094)were not significantly *** a URR did not affect OS(p Z 0.99),but was associated with increased operation time(570 min vs.490 min,p Z 0.046).Conclusion:While concomitant URR were associated with an increase in operation time,there were no significant differences in postoperative complications or *** with colorectal peritoneal metastases a

关键词： Cytoreductive surgery Hyperthermic intraperitoneal chemotherapy Peritoneal carcinomatosis Urological procedures Urological reconstruction

Gastric peritoneal carcinomatosis-a retrospective review

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World Journal of Gastrointestinal Oncology 2017年第3期9卷 121-128页

作者： Hwee Leong Tan Claramae Shulyn Chia Grace Hwei Ching Tan Su Pin Choo David Wai-Meng Tai Clarinda Wei Ling Chua Matthew Chau Hsien Ng Khee chee soo Melissa Ching Ching Teo Division of Surgical Oncology National Cancer Centre Singapore Dvision of Medical Oncology National Cancer Centre Singapore

AIM To characterize patients with gastric peritoneal carcinomatosis(PC) and their typical clinical and treatment course with palliative systemic chemotherapy as the current standard of *** We performed a retrospective electronic chart review of all patients with gastric adenocarcinoma with PC diagnosed at initial metastatic presentation between January 2010 and December 2014 in a single tertiary referral *** We studied a total of 271 patients with a median age of 63.8 years and median follow-up duration of 5.1 mo. The majority(n = 217, 80.1%) had the peritoneum as the only site of metastasis at initial presentation. Palliative systemic chemotherapy was eventually planned for 175(64.6%) of our patients at initial presentation, of which 171 were initiated on it. Choice of first-line regime was in accordance with the National Comprehensive Cancer Network Guidelines for Gastric Cancer Treatment. Thesepatients underwent a median of one line of chemotherapy, completing a median of six cycles in total. Chemotherapy disruption due to unplanned hospitalizations occurred in 114(66.7%), while cessation of chemotherapy occurred in 157(91.8%), with 42 cessations primarily attributable to PC-related complications. Patients who had initiation of systemic chemotherapy had a significantly better median overall survival than those who did not(10.9 mo vs 1.6 mo, P < 0.001). Of patients who had initiation of systemic chemotherapy, those who experienced any disruptions to chemotherapy due to unplanned hospitalizations had a significantly worse median overall survival compared to those who did not(8.7 mo vs 14.6 mo, P < 0.001).CONCLUSION Gastric PC carries a grim prognosis with a clinical course fraught with disease-related complications which may attenuate any survival benefit which palliative systemic chemotherapy may have to offer. As such, investigational use of regional therapies is warranted and required validation in patients with isolated PC to maximize their

关键词： Peritoneal carcinomatosis Gastric cancer

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迂回隧道开挖对导坑隧道之影响探讨

隧道建设 2007年第S2期27卷 150-154页

作者：陈志南贾儒龙赖正树柯志青台湾科技大学营建系平卡迪贸易有限公司

对于长大隧道而言,全断面隧道钻掘机(TBM)钻掘如施工顺利,可有效缩短工期,惟当遇及特殊地质状况时,亦可能导致TBM受困停工,此时采用迂回隧道绕至TBM机头前方解困是常用之解困方式之一,但迂回隧道挖掘对导坑隧道之影响机制不明,值得探讨... 详细信息

对于长大隧道而言,全断面隧道钻掘机(TBM)钻掘如施工顺利,可有效缩短工期,惟当遇及特殊地质状况时,亦可能导致TBM受困停工,此时采用迂回隧道绕至TBM机头前方解困是常用之解困方式之一,但迂回隧道挖掘对导坑隧道之影响机制不明,值得探讨。故本研究以雪山隧道导坑第十次TBM被埋受困之情况为仿真对象,将导坑视为本研究交叉区段之导坑隧道,利用三维程序FLAC3D探讨迂回隧道施作对导坑隧道之影响。导坑隧道为圆形断面(直径D=5m)、迂回隧道为方形断面(B×B=2m×2m)开挖。依本研究范围内所得之结论如下:由导坑隧道向外垂直破孔处左右两侧区域呈现应力增加趋势,其加压幅度可达初始应力10%~22%。45°破孔进入导坑隧道之锐角侧壁处在破孔后σ1、σ2、σ3分别增加47%、40%、-33.5%,与90°直交侧壁处之调整为20%、18%、6%要高出不少。另外钝角侧壁处其支撑承受之岩压在破孔后σ1、σ2、σ3分别增加21%、11%、-45%。

关键词： TBM 迂回隧道应力集中

Correction to“Responsive hydrogel dressings for intelligent wound management”

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BMEMat(BioMedical Engineering Materials) 2024年第2期2卷 147-147页

作者： Wang, Suxi Wu, Wen-Ya Yeo, Jayven chee Chuan soo, Xiang Yun Debbie Thitsartarn, Warintorn Liu, Songlin Tan, Beng Hoon Suwardi, Ady Li, Zibiao Zhu, Qiang Loh, Xian Jun

In the“CONFLICT OF INTEREST STATEMENT”section,the text“The authors declare no conflicts of interest.”is *** should be corrected to“Xian Jun Loh is an editorial board member of the BMEMat journal and was not involved in the editorial review or the decision to publish this *** authors declare no competing interests.”We apologize for this error.

关键词： wound journal incomplete