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multifunctional mXene/Carbon Nanotube Janus Film for Electromagnetic Shielding and Infrared Shielding/Detection in Harsh Environments

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Nano-micro Letters 2024年第10期16卷 543-560页

作者： Tufail Hassan Aamir Iqbal byungkwon Yoo Jun Young Jo Nilufer Cakmakci Shabbir madad Naqvi Hyerim kim Sungmin Jung Noushad Hussain Ujala Zafar Soo Yeong Cho Seunghwan Jeong Jaewoo kim Jung min Oh Sangwoon Park Youngjin Jeong Chong min Koo School of Advanced materials Science and Engineering Sungkyunkwan UniversitySeobu-ro 2066Jangan-guSuwon-siGyeonggi-do 16419Republic of Korea Department of materials Science and Engineering Soongsil UniversitySeoul 06978Republic of Korea Institute of Advanced Composite materials Korea Institute of Science and Technology92 Chudong-roBongdong-eupWanju-gunJeollabuk-do 55324Republic of Korea R&D Center INNOmXENE Co. Ltd.Daejeon 34365Republic of Korea School of Chemical Engineering Sungkyunkwan UniversitySeobu-ro 2066Jangan-guSuwon-siGyeonggi-do 16419Republic of Korea

multifunctional,flexible,and robust thin films capable of operating in demanding harsh temperature environments are crucial for various cutting-edge *** study presents a multifunctional Janus film integrating highly-crystalline Ti_(3)C_(2)T_(x) mXene and mechanically-robust carbon nanotube(CNT)film through strong hydrogen *** hybrid film not only exhibits high electrical conductivity(4250 S cm^(-1)),but also demonstrates robust mechanical strength and durability in both extremely low and high temperature environments,showing exceptional resistance to thermal *** hybrid Janus film of 15μm thickness reveals remarkable multifunctionality,including efficient electromagnetic shielding effectiveness of 72 db in X band frequency range,excellent infrared(IR)shielding capability with an average emissivity of 0.09(a minimal value of 0.02),superior thermal camouflage performance over a wide temperature range(−1 to 300℃)achieving a notable reduction in the radiated temperature by 243℃ against a background temperature of 300℃,and outstanding IR detection capability characterized by a 44%increase in resistance when exposed to 250 W IR *** multifunctional mXene/CNT Janus film offers a feasible solution for electromagnetic shielding and IR shielding/detection under challenging conditions.

关键词： mXene/carbon nanotube Janus film Electromagnetic interference shielding Infrared shielding Thermal camouflage Infrared detection

mixed-dimensional stacked nanocomposite structures for a specific wavelength-selectable ambipolar photoresponse

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Nano Research 2024年第6期17卷 5549-5558页

作者： Young Jae Park Jaeho Shim Joo Song Lee Kyu Seung Lee Ji-Yeon kim Kang bok Ko Sang-Youp Yim Seongjun kim Hoon-Kyu Shin Donghee Park Yong Ju Yun Dong Ick Son Institute of Advanced Composite materials Korea Institute of Science and TechnologyJeollabuk-do 55324Republic of Korea National Institute for Nanomaterials Technology Pohang University of Science and TechnologyGyeongsangbuk-do 37673Republic of Korea Department of Semiconductor Science and Technology Semiconductor Physics Research CenterJeonbuk National UniversityJeonju 54896Republic of Korea Advanced Photonics Research Institute Gwangju Institute of Science and TechnologyGwangju 61005Republic of Korea Center for Opto-Electronic materials and Devices Post-Silicon Semiconductor InstituteKorea Institute of Science and TechnologySeoul 02792Republic of Korea Graduate School of Energy and Environment(KU-KIST Green School) Korea UniversitySeoul 02841Republic of Korea KIST School Department of Nanomaterials and Nano ScienceUniversity of Science and Technology(UST)Daejeon 34113Republic of Korea

mixed-dimensional composite structures using zero-dimensional(0D)quantum dots(QDs)and two-dimensional(2D)transition metal dichalcogenides(TmDs)materials are expected to attract great interest in optoelectronics due to the potential to generate new optical ***,we report on the unique optical characteristics of a devices with mixed dimensional vertically stacked structures based on tungsten diselenide(WSe_(2))/CdSeS QDs monolayer/molybdenum disulfide(moS_(2))(2D/0D/2D).Specifically,it exhibits an ambipolar photoresponse characteristic,with a negative photoresponse observed in the 400-600 nm wavelength range and a positive photoresponse appeared at 700 nm *** resulted in the high negative responsivity of up to 52.22 mA·W^(−1)under 400 nm,which is 163 times higher than that of the photodetector without CdSeS *** also demonstrated the negative photoresponse,which could be due to increased carrier collision probability and non-radiative *** modeling and simulation reveal that Auger recombination among the types of non-radiative recombination is the main cause of negative photocurrent ***,we discovered ambipolar photoresponse near a specific wavelength corresponding to the energy of quantum *** study revealed interesting phenomenon in the mixed low-dimensional stacked structure and paved the way to exploit it for the development of innovative photodetection materials as well as for optoelectronic applications.

关键词： mixed-dimension quantum dot heterostructure photodetector ambipolar photoresponse

Three-dimensional analysis of age and sex differences in femoral head asphericity in asymptomatic hips in the United States

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World Journal of Orthopedics 2024年第8期15卷 754-763页

作者： mahad m Hassan Aliya G Feroe brenton W Douglass Andrew E Jimenez benjamin Kuhns Charles F mitchell Robert L Parisien Daniel A maranho Eduardo N Novais Young-Jo kim Ata m Kiapour Department of Orthopedic Surgery University of MinnesotaMinneapolisMN 55454United States Department of Orthopedic Surgery TRIA Orthopaedic CenterBloomingtonMN 55122United States Department of Orthopedic Surgery Boston Children’s HospitalBostonMA 02115United States Department of Orthopedic Surgery Mayo ClinicRochesterMN 55901United States Department of Orthopaedics and Rehabilitation Yale School of MedicineNew HavenCT 06510United States Department of Orthopedic Surgery American Hip Institute Research FoundationDes PlainesIL 60018United States Department of Orthopedic Surgery Mount SinaiNew YorkNY 10029United States Department of biomechanics Medicineand Rehabilitation of the Locomotor SystemRibeirao Preto Medical SchoolUniversity of São PauloRibeirao Preto 14048-900São PauloBrazil

bACKGROUND The sphericity of the femoral head is a metric used to evaluate hip pathologies and is associated with the development of osteoarthritis and femoral-acetabular *** To analyze the three-dimensional asphericity of the femoral head of asymptomatic pediatric *** hypothesized that femoral head asphericity will vary significantly between male and female pediatric hips and increase with age in both *** Computed tomography scans were obtained on 158 children and adolescents from a single institution in the United States(8-18 years;50%male)without hip *** femoral measurements including the femoral head diameter,femoral head volume,residual volume,asphericity index,and local diameter difference were used to evaluate femoral head *** In both sexes,the residual volume increased by age(Pmaller femoral head size in older ages(>13 years)in females,there were no sex-differences in residual volume and aspherity *** were no age-related changes in mean diameter difference in both sexes(P=0.07)with no significant sex-differences across different age groups(P=0.06).In contrast,there were significant increases in local aspherity(maximum diameter difference)across whole surface of the femoral head and all quadrants except the inferior regions in males(P=0.03).There were no sex-differences in maximum diameter difference at any regions and age group(P>0.05).Increased alpha angle was only correlated to increased mean diameter difference across overall surface of the femoral head(P=0.024).CONCLUSION There is a substantial localized asphericity in asymptomatic hips which increases with age *** 2D measured alpha angle can capture overall asphericity of the femoral head,it may not be sensitive enough to represent regional asphericity patterns.

关键词： Hip Femoral head Sphericity Skeletal growth Sex differences

Enhancing biVO_(4)photoanode performance by insertion of an epitaxial biFeO_(3)ferroelectric layer

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Journal of Energy Chemistry 2024年第2期89卷 71-78,I0003页

作者： Haejin Jang Yejoon kim Hojoong Choi Jiwoong Yang Yoonsung Jung Sungkyun Choi Donghyeon Lee Ho Won Jang Sanghan Lee School of materials Science and Engineering Gwangju Institute of Science and TechnologyGwangju 61005Republic of Korea Department of materials Science and Engineering Seoul National UniversitySeoul 08826Republic of Korea

biVO_(4)(bVO)is a promising material as the photoanode for use in photoelectrochemical ***,the high charge recombination and slow charge transfer of the bVO have been obstacles to achieving satisfactory photoelectrochemical *** address this,various modifications have been attempted,including the use of ferroelectric *** materials can form a permanent polarization within the layer,enhancing the separation and transport of photo-excited electron-hole *** this study,we propose a novel approach by depositing an epitaxial biFeO_(3)(bFO)thin film underneath the bVO thin film(bVO/bFO)to harness the ferroelectric property of *** self-polarization of the inserted bFO thin film simultaneously functions as a buffer layer to enhance charge transport and a hole-blocking layer to reduce charge *** a result,the bVO/bFO photoanodes showed more than 3.5 times higher photocurrent density(0.65 mA cm^(-2))at 1.23 V_(RHE)under the illumination compared to the bare bVO photoanodes(0.18 m A cm^(-2)),which is consistent with the increase of the applied bias photon-to-current conversion efficiencies(AbPE)and the result of electrochemical impedance spectroscopy(EIS)*** results can be attributed to the self-polarization exhibited by the inserted bFO thin film,which promoted the charge separation and transfer efficiency of the bVO photoanodes.

关键词： Photoelectrochemical Photoanode biVO_(4) Ferroelectric materials biFeO_(3)

malignant triton tumor in the abdominal wall:A case report

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World Journal of Clinical Cases 2024年第8期12卷 1467-1473页

作者： Ho Jik Yang Donghyun kim Won Suk Lee Sang-Ha Oh Department of Plastic and Reconstructive Surgery Chungnam National University Sejong HospitalSejong 30099South Korea Department of Plastic and Reconstructive Surgery Chungnam National University HospitalDaejeon 35015South Korea Department of Emergency Eulji University HospitalDaejeon 35233South Korea Department of Plastic and Reconstructive Surgery Chungnam National University College of MedicineDaejeon 35015South Korea

bACKGROUND malignant triton tumors(mTTs)comprise a subgroup of malignant peripheral nerve sheath tumors(mPNSTs)that exhibits rhabdomyosarcomatous differen-tiation and follow an aggressive *** are primarily located along peripheral *** of mTTs in the abdominal wall have not been *** has a poorer prognosis than classic mPNSTs,and accurate diagnosis necessitates a keen understanding of the clinical history and knowledge of its differential diagnosis *** for mTTs mirrors that for mPNSTs and is predominantly *** SUmmARY A 49-year-old woman presented with a subcutaneous mass in her lower abdo-minal wall and a pre-existing surgical scar that had grown slowly over 3-4 months before the *** had previously undergone radical hysterectomy and concurrent chemo-radiotherapy for cervical cancer approximately 5 years prior to the *** computed tomography(CT)showed a 1.3 cm midline mass in the lower abdomen with infiltration into the rectus abdominis *** was no sign of metastasis(T1N0m0).An incisional biopsy identified sporadic mTT of the lower abdomen.A comprehensive surgical excision with a 3 cm margin inclusive of the peritoneum was ***-quently,the general surgeon utilized an approach akin to the open peritoneal onlay mesh *** patient underwent additional treatment with an excision shaped as a mini-abdominoplasty for the skin *** complications arose,and annual follow-up CTs did not show signs of recurrence or *** An abdominal mTT was efficaciously treated with extensive excision and abdominal wall reconstruction,eliminating the need for postoperative radiotherapy.

关键词： malignant triton tumor Abdominal wall Surgical excision Reconstruction Case report

New insights into ATR inhibition in muscle invasive bladder cancer:The role of apolipoprotein b mRNA editing catalytic subunit 3b

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Oncology Research 2024年第6期32卷 1021-1030页

作者： HYUNHO kim UIJU CHO SOOK HEE HONG HYUNG SOON PARK IN-HO kim HO JUNG AN bYOUNG YONG SHIm JIN HYOUNG KANG Division of medical Oncology Department of Internal MedicineSt.Vincent’s HospitalCollege of MedicineThe Catholic University of KoreaSuwonKorea Department of Pathology St.Vincent’s HospitalCollege of MedicineThe Catholic University of KoreaSuwonKorea Division of medical Oncology Department of Internal MedicineSeoul St.Mary’s HospitalCollege of MedicineThe Catholic University of KoreaSeoulKorea

background:Apolipoprotein b mRNA editing catalytic polypeptide(APObEC),an endogenous mutator,induces DNA damage and activates the ataxia telangiectasia and Rad3-related(ATR)-checkpoint kinase 1(Chk1)*** cisplatin-based therapy is the mainstay for muscle-invasive bladder cancer(mIbC),it has a poor survival ***,this study aimed to evaluate the efficacy of an ATR inhibitor combined with cisplatin in the treatment of APObEC catalytic subunit 3b(APObEC3b)expressing ***:Immunohistochemical staining was performed to analyze an association between APObEC3b and ATR in patients with *** APObEC3b expression in mIbC cell lines was assessed using real-time polymerase chain reaction and western blot *** blot analysis was performed to confirm differences in phosphorylated Chk1(pChk1)expression according to the APObEC3b *** viability and apoptosis analyses were performed to examine the anti-tumor activity of ATR inhibitors combined with ***:There was a significant association between APObEC3b and ATR expression in the tumor tissues obtained from patients with *** with higher APObEC3b expression showed higher pChk1 expression than cells expressing low APObEC3b *** treatment of ATR inhibitor and cisplatin inhibited cell growth in mIbC cells with a higher APObEC3b *** to cisplatin single treatment,combination treatment induced more apoptotic cell death in the cells with higher APObEC3b ***:Our study shows that APObEC3b’s higher expression status can enhance the sensitivity of mIbC to cisplatin upon ATR *** result provides new insight into appropriate patient selection for the effective application of ATR inhibitors in mIbC.

关键词： Apolipoprotein b mRNA editing catalytic polypeptide(APObEC) Ataxia telangiectasia and Rad3-related(ATR) bladder cancer DNA damage response DNA replication stress

Achieving Ultra-broad microwave Absorption bandwidth Around millimeter-Wave Atmospheric Window Through an Intentional manipulation on multi-magnetic Resonance behavior

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Nano-micro Letters 2024年第9期16卷 291-307页

作者： Chuyang Liu Lu Xu Xueyu Xiang Yujing Zhang Li Zhou bo Ouyang Fan Wu Dong‑Hyun kim Guangbin Ji School of materials Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 210016JiangsuPeople’s Republic of China School of materials Science and Engineering Nanjing University of Science and TechnologyNanjing 210094JiangsuPeople’s Republic of China School of Physics Nanjing University of Science and TechnologyNanjing 210094JiangsuPeople’s Republic of China School of mechanical Engineering Nanjing University of Science and TechnologyNanjing 210094JiangsuPeople’s Republic of China School of Physics Chungbuk National UniversityCheongju 28644South Korea Department of Chemistry School of ScienceTianjin UniversityTianjin 300072People’s Republic of China

The utilization of electromagnetic waves is rapidly advancing into the millimeter-wave frequency range,posing increasingly severe challenges in terms of electromagnetic pollution prevention and radar ***,existing millimeter-wave absorbers are still inadequate in addressing these issues due to their monotonous magnetic resonance *** this work,rare-earth La^(3+)and non-magnetic Zr^(4+)ions are simultaneously incorporated into m-type barium ferrite(bam)to intentionally manipulate the multi-magnetic resonance *** leveraging the contrary impact of La^(3+)and Zr^(4+)ions on magnetocrystalline anisotropy field,the restrictive relationship between intensity and frequency of the multi-magnetic resonance is successfully *** magnetic resonance peak-differentiating and imitating results confirm that significant multi-magnetic resonance phenomenon emerges around 35 GHz due to the reinforced exchange coupling effect between Fe^(3+)and Fe^(2+)***,mosbauer spectra analysis,first-principle calculations,and least square fitting collectively identify that additional La^(3+)doping leads to a profound rearrangement of Zr^(4+)occupation and thus makes the portion of polarization/conduction loss increase *** a consequence,the La^(3+)-Zr^(4+)co-doped bam achieves an ultra-broad bandwidth of 12.5+GHz covering from 27.5 to 40+GHz,which holds remarkable potential for millimeter-wave absorbers around the atmospheric window of 35 GHz.

关键词： microwave absorption Ultra-broad bandwidth m-type barium ferrite magnetocrystalline anisotropy field multimagnetic resonance

Estimating the subsolar magnetopause position from soft X-ray images using a low-pass image filter

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Earth and Planetary Physics 2024年第1期8卷 173-183页

作者： Hyangpyo kim Hyunju K.Connor Jaewoong Jung brian m.Walsh David Sibeck Kip D.Kuntz Frederick S.Porter Catriana K.Paw U Rousseau A.Nutter Ramiz Qudsi Rumi Nakamura michael Collier Space Research Institute Austrian Academy of Sciences8042 GrazAustria Geophysical Institute University of Alaska FairbanksFairbanksAlaska 99775USA National Aeronautics and Space Administration(NASA)Goddard Space Flight Center GreenbeltMaryland 20771USA Astronomy Department University of Maryland College ParkCollege ParkMaryland 20742USA Center for Space Physics Boston UniversityBostonMassachusetts 02215USA Department of Physics and Astronomy Johns Hopkins UniversityBaltimoreMaryland 21218USA Howard University WashingtonDC 20059USA

The Lunar Environment heliospheric X-ray Imager(LEXI)and Solar wind magnetosphere Ionosphere Link Explorer(SmILE)missions will image the Earth’s dayside magneto pause and cusps in soft X-rays after their respective launches in the near future,to specify glo bal magnetic reconnection modes for varying solar wind *** suppo rt the success of these scientific missions,it is critical to develop techniques that extract the magnetopause locations from the observed soft X-ray *** this research,we introduce a new geometric equation that calculates the subsolar magnetopause position(RS)from a satellite position,the look direction of the instrument,and the angle at which the X-ray emission is *** assumptions are used in this method:(1)The look direction where soft X-ray emissions are maximized lies tangent to the magnetopause,and(2)the magnetopause surface near the subsolar point is almost spherical and thus RSis nea rly equal to the radius of the magneto pause *** create synthetic soft X-ray images by using the Open Geospace General Circulation model(OpenGGCm)global magnetohydrodynamic model,the galactic background,the instrument point spread function,and Poisson *** then apply the fast Fourier transform and Gaussian low-pass filte rs to the synthetic images to re move noise and obtain accurate look angles for the soft X-ray pea *** the filte red images,we calculate RS and its accuracy for different LEXI locations,look directions,and solar wind densities by using the OpenGGCm subsolar magnetopause location as ground *** method estimates RS with an accuracy of10 *** accuracy improves for greater solar wind densities and during southward interplanetary magnetic *** method ca ptures the magnetopause motion during southwa rd interplaneta ry magnetic field ***,the technique will enable quantitative analysis of the magnetopause motion and help reveal the daysi

关键词： soft X-ray magnetopause reconnection low-pass filter LEXI SmILE

Enhancing the clinical relevance of haemorrhage prediction models in trauma

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military medical Research 2024年第3期11卷 467-468页

作者： Sankalp Tandle Jared m.Wohlgemut max E.R.marsden Erhan Pisirir Evangelia Kyrimi Rebecca S.Stoner William marsh Zane b.Perkins Nigel R.m.Tai Centre for Trauma Sciences Blizard InstituteQueen Mary University of LondonLondon E12ATUK The Royal London Hospital Barts Health NHS TrustLondon E11FRUK Academic Department of military Surgery and Trauma Research and Clinical InnovationThe Royal Centre for Defence MedicineBirmingham B152WBUK Department of Electronic Engineering and Computer Science Queen Mary University of LondonLondon E14NSUK

We read with interest the recent systematic reviewaArtificial intelligence and machine learning for hemorrhagic trauma careoby Peng et al.[1],which evaluated literature on machine learning(mL)in the management of trau... 详细信息

关键词： Trauma Injury blood transfusion massive transfusion Prediction Artificial intelligence machine learning