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A Generic Strategy to Create Mechanically Interlocked Nanocomposite/Hydrogel Hybrid Electrodes for Epidermal Electronics 被引量:1
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作者 Qian Wang Yanyan Li +7 位作者 Yong Lin yuping sun Chong Bai Haorun Guo Ting Fang Gaohua Hu Yanqing Lu Desheng Kong 《Nano-Micro Letters》 SCIE EI CAS CSCD 2024年第5期120-133,共14页
Stretchable electronics are crucial enablers for next-generation wearables intimately integrated into the human body.As the primary compliant conductors used in these devices,metallic nanostructure/elastomer composite... Stretchable electronics are crucial enablers for next-generation wearables intimately integrated into the human body.As the primary compliant conductors used in these devices,metallic nanostructure/elastomer composites often struggle to form conformal contact with the textured skin.Hybrid electrodes have been consequently developed based on conductive nanocomposite and soft hydrogels to establish seamless skin-device interfaces.However,chemical modifications are typically needed for reliable bonding,which can alter their original properties.To overcome this limitation,this study presents a facile fabrication approach for mechanically interlocked nanocomposite/hydrogel hybrid electrodes.In this physical process,soft microfoams are thermally laminated on silver nanowire nanocomposites as a porous interface,which forms an interpenetrating network with the hydrogel.The microfoam-enabled bonding strategy is generally compatible with various polymers.The resulting interlocked hybrids have a 28-fold improved interfacial toughness compared to directly stacked hybrids.These electrodes achieve firm attachment to the skin and low contact impedance using tissue-adhesive hydrogels.They have been successfully integrated into an epidermal sleeve to distinguish hand gestures by sensing mus-cle contractions.Interlocked nanocomposite/hydrogel hybrids reported here offer a promising platform to combine the benefits of both materials for epidermal devices and systems. 展开更多
关键词 Stretchable electronics Epidermal electronics Silver nanowire Conductive nanocomposites HYDROGEL
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Physical Origin of Color Changes in Lutetium Hydride under Pressure
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作者 吕润 涂文倩 +2 位作者 邵定夫 孙玉平 鲁文建 《Chinese Physics Letters》 SCIE EI CAS CSCD 2023年第11期120-125,共6页
Recently,near-ambient superconductivity was claimed in nitrogen-doped lutetium hydride(LuH_(3-δ)N_(ε)).Unfortunately,all follow-up research still cannot find superconductivity signs in successfully synthesized lutet... Recently,near-ambient superconductivity was claimed in nitrogen-doped lutetium hydride(LuH_(3-δ)N_(ε)).Unfortunately,all follow-up research still cannot find superconductivity signs in successfully synthesized lutetium dihydride(LuH_(2)) and N-doped LuH_(2±x)N_(y).However,a similar intriguing observation was the pressure-induced color changes(from blue to pink and subsequent red).The physical understanding of its origin and the correlation between the color,crystal structure,and chemical composition of Lu–H–N is still lacking.In this work,we systematically investigated the optical properties of LuH_(2) and LuH_(3),and the effects of hydrogen vacancies and nitrogen doping using the first-principles calculations by considering both interband and intraband contributions.Our results demonstrate that the evolution of reflectivity peaks near blue and red light,which is driven by changes in the band gap and Fermi velocity of free electrons,resulting in the blue-to-red color change under pressure.In contrast,LuH_(3) exhibits gray and no color change up to 50 GPa.Furthermore,we investigated the effects of hydrogen vacancies and nitrogen doping on its optical properties.Hydrogen vacancies can significantly decrease the pressure of blue-to-red color change in LuH_(2) but do not have a noticeable effect on the color of LuH_(3).The N-doped LuH_(2) with the substitution of a hydrogen atom at the tetrahedral position maintains the color change when the N-doping concentration is low.As the doping level increases,this trend becomes less obvious,while other N-doped structures do not show a blue-to-red color change.Our results can clarify the origin of the experimental observed blue-to-red color change in lutetium hydride and also provide a further understanding of the potential N-doped lutetium dihydride. 展开更多
关键词 HYDRIDE DOPING ORIGIN
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Coexistence of Quasi-two-dimensional Superconductivity and Tunable Kondo Lattice in a van der Waals Superconductor 被引量:1
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作者 Shiwei Shen Tian Qin +8 位作者 Jingjing Gao Chenhaoping Wen Jinghui Wang Wei Wang Jun Li Xuan Luo Wenjian Lu yuping sun Shichao Yan 《Chinese Physics Letters》 SCIE EI CAS CSCD 2022年第7期81-86,共6页
Realization of Kondo lattice in superconducting van der Waals materials not only provides a unique opportunity for tuning the Kondo lattice behavior by electrical gating or intercalation,but also is helpful for furthe... Realization of Kondo lattice in superconducting van der Waals materials not only provides a unique opportunity for tuning the Kondo lattice behavior by electrical gating or intercalation,but also is helpful for further understanding the heavy fermion superconductivity.Here we report a low-temperature and vector-magneticfield scanning tunneling microscopy and spectroscopy study on a superconducting compound(4Hb-TaS_(2))with alternate stacking of 1T-TaS_(2)and 1H-TaS_(2)layers.We observe the quasi-two-dimensional superconductivity in the 1H-TaS_(2)layer with anisotropic response to the in-plane and out-of-plane magnetic fields.In the 1T-TaS_(2)layer,we detect the Kondo resonance peak that results from the Kondo screening of the unpaired electrons in the Star-of-David clusters.We also find that the intensity of the Kondo resonance peak is sensitive to its relative position with the Fermi level,and it can be significantly enhanced when it is further shifted towards the Fermi level by evaporating Pb atoms onto the 1T-TaS_(2)surface.Our results not only are important for fully understanding the electronic properties of 4Hb-TaS_(2),but also pave the way for creating tunable Kondo lattice in the superconducting van der Waals materials. 展开更多
关键词 red Coexistence of Quasi-two-dimensional Superconductivity and Tunable Kondo Lattice in a van der Waals Superconductor Lattice
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Characteristics of seismic performance of building structures located in mountainous areas
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作者 yuping sun Takashi Takeuchi Yingmin Li 《西部人居环境学刊》 2015年第A01期17-23,共7页
关键词 Multi-segment beam element Seismic performance Construction topography Mountainous areas
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Strain-enhanced polarization sensitivity inβ-Ga_(2)O_(3)photodetector
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作者 Yonghui Zhang Huili Liang +4 位作者 Fei Xing Qiqian Gao Yu Feng yuping sun Zengxia Mei 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS CSCD 2024年第4期126-137,共12页
Polarization-sensitive photodetection and imaging have great application value in fields such as polarization division multiplexing optical communication,remote sensing,near-field imaging and military monitoring.Pursu... Polarization-sensitive photodetection and imaging have great application value in fields such as polarization division multiplexing optical communication,remote sensing,near-field imaging and military monitoring.Pursuing a high polarization ratio has always been the research hotspot in polarization-sensitive photodetectors.In this paper,we report a compression strain enhanced polarization ratio inβ-gallium oxide(β-Ga_(2)O_(3))single crystal flake.A rigorous crystallographic analysis confirmed its high crystalline quality and orientation.Angle-resolved polarization Raman spectroscopy(ARPRS)was adopted to study the anisotropy of its optical properties.Extensive ARPRS measurements and theoretical calculation consistently demonstrate the strong optical anisotropy in the high-qualityβ-Ga_(2)O_(3)flake.A polarization ratio of 0.96 was obtained in the flatβ-Ga_(2)O_(3)flake.Furthermore,mechanical strain of±0.7%was introduced intoβ-Ga_(2)O_(3).An increased polarization ratio of 0.98 was achieved in the case of 0.7%compression strain,which is,to the best of our knowledge,the highest value for UVC polarization-sensitive photodetectors.That corresponds to an improved polarization rejection ratio of 100.This work proposed a new path towards improving polarization sensitivity by applying strain engineering in the active material. 展开更多
关键词 gallium oxide polarization photodetector ANISOTROPY STRAIN
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Central nervous system efficacy of aumolertinib versus gefitinib in patients with untreated,EGFR-mutated,advanced non-small cell lung cancer:data froma randomized phase III trial(AENEAS)
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作者 Shun Lu Xiaorong Dong +54 位作者 Hong Jian Jianhua Chen Gongyan Chen yuping sun Yinghua Ji ZipingWang Jianhua Shi Junguo Lu Shaoshui Chen Dongqing Lv Guojun Zhang Chunling Liu Juan Li Xinmin Yu Zhong Lin Zhuang Yu ZhehaiWang Jiuwei Cui Xingxiang Xu Jian Fang Jifeng Feng Zhi Xu RuiMa Jie Hu Nong Yang Xiangdong Zhou XiaohongWu Chengping Hu Zhihong Zhang You Lu Yanping Hu Liyan Jiang Qiming wang Renhua Guo Jianying Zhou Baolan Li Chunhong Hu Wancheng Tong Helong Zhang LinMa Yuan Chen Zhijun Jie Yu Yao Longzhen Zhang JieWeng Weidong Li Jianping Xiong Xianwei Ye Jianchun Duan Haihua Yang Meili sun HongyingWei JiaweiWei Zheyu Zhang QiongWu 《Cancer Communications》 SCIE 2024年第9期1005-1017,共13页
Background:The initial randomized,double-blinded,actively controlled,phase III ANEAS study(NCT03849768)demonstrated that aumolertinib showed superior efficacy relative to gefitinib as first-line therapy in epidermal g... Background:The initial randomized,double-blinded,actively controlled,phase III ANEAS study(NCT03849768)demonstrated that aumolertinib showed superior efficacy relative to gefitinib as first-line therapy in epidermal growth factor receptor(EGFR)-mutated advanced non-small cell lung cancer(NSCLC).Metastatic disease in the central nervous system(CNS)remains a challenge in the management of NSCLC.This study aimed to compare the efficacy of aumolertinib versus gefitinib among patients with baseline CNS metastases in the ANEAS study.Methods:Eligible patients were enrolled and randomly assigned in a 1:1 ratio to orally receive either aumolertinib or gefitinib in a double-blinded fashion.Patients with asymptomatic,stable CNS metastases were included.Follow-up imaging of the same modality as the initial CNS imaging was performed every 6 weeks for 15 months,then every 12weeks.CNS responsewas assessed by a neuroradiological blinded,independent central review(neuroradiological-BICR).The primary endpoint for this subgroup analysis was CNS progression-free survival(PFS).Results:Of the 429 patients enrolled and randomized in the ANEAS study,106 patients were found to have CNS metastases(CNS Full Analysis Set,cFAS)at baseline by neuroradiological-BICR,and 60 of them had CNS target lesions(CNS Evaluable for Response,cEFR).Treatment with aumolertinib significantly prolonged median CNS PFS compared with gefitinib in both cFAS(29.0 vs.8.3 months;hazard ratio[HR]=0.31;95%confidence interval[CI],0.17-0.56;P<0.001)and cEFR(29.0 vs.8.3 months;HR=0.26;95%CI,0.11-0.57;P<0.001).The confirmed CNS overall response rate in cEFRwas 85.7%and 75.0%in patients treated with aumolertinib and gefitinib,respectively.Competing risk analysis showed that the estimated probability of CNS progression without prior non-CNS progression or death was consistently lower with aumolertinib than with gefitinib in patients with and without CNSmetastases at baseline.No new safety findings were observed.Conclusions:These results indicate a potential advantage of aumolertinib over gefitinib in terms of CNS PFS and the risk of CNS progression in patients with EGFR-mutated advanced NSCLC with baseline CNS metastases. 展开更多
关键词 aumolertinib brain metastasis non-small cell lung cancer third-generation EGFR-TKI
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Hydrogel-derived nitrogen-doped porous carbon framework with vanadium nitride decoration for supercapacitors with superior cycling performance 被引量:1
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作者 Ziqiang Wu Qian Chen +5 位作者 Changdian Li Lili Zhu Yanan Huang Xiaoguang Zhu Xuebin Zhu yuping sun 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2023年第24期167-174,共8页
Transition metal nitrides(TMNs)and their composites with carbon materials hold tremendous potential for supercapacitor(SC)electrodes because of their excellent electronic conductivity and electrochemical activity.Howe... Transition metal nitrides(TMNs)and their composites with carbon materials hold tremendous potential for supercapacitor(SC)electrodes because of their excellent electronic conductivity and electrochemical activity.However,realizing cycling stable TMN/carbon-based supercapacitors with economically viable and environmentally-friendly approaches remains a significant challenge.Significantly,polyacrylamide(PAM)hydrogel,as a water-soluble linear polymer electrolyte,is expected to be a remarkable candidate precursor for preparing N-doped porous carbon(NPC)due to the high contents of carbon and nitrogen elements.In this study,vanadium nitride(VN)embedded in PAM hydrogel-derived NPC was fabricated successfully via an ammonia-free process.The VN/NPC delivers a high specific capacitance of 198.3 F g^(−1)at a current density of 1 A g^(−1),with a remarkable cycling stability of 107%after 16,000 cycles.The electrochemical performances of VN/NPC compared to bare VN nanoparticles are strongly improved due to the composite structure.Additionally,the VN/NPC-based solid-state symmetric device delivers an excellent energy density of 21.97µWh cm^(−2)at a power density of 0.5 mW cm^(−2),and an outstanding cycling durability of 90.9%after 18,000 cycles.This work paves the way to design metal nitride/porous carbon materials,which also opens up unique horizons for the recovery of hydrogel electrolyte. 展开更多
关键词 Vanadium nitride Nitrogen-doped porous carbon POLYACRYLAMIDE HYDROGEL SUPERCAPACITOR
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Efficacy and safety of a novel anti-HER2 therapeutic antibody RC48 in patients with HER2-overexpressing,locally advanced or metastatic gastric or gastroesophageal junction cancer:a single-arm phase II study 被引量:48
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作者 Zhi Peng Tianshu Liu +32 位作者 Jia Wei Airong Wang Yifu He Liuzhong Yang Xizhi Zhang Nanfeng Fan Suxia Luo Zhen Li Kangsheng Gu Jianwei Lu Jianming Xu Qingxia Fan Ruihua Xu Liangming Zhang Enxiao Li yuping sun Guohua Yu Chunmei Bai Yong Liu Jiangzheng Zeng Jieer Ying Xinjun Liang Nong Xu Chao Gao Yongqian Shu Dong Ma Guanghai Dai Shengmian Li Ting Deng Yuehong Cui Jianmin Fang Yi Ba Lin Shen 《Cancer Communications》 SCIE 2021年第11期1173-1182,共10页
Background:Current treatment options for human epidermal growth factor receptor 2(HER2)-overexpressing gastric cancer at third-line have shown limited clinical benefit.Further,there is no specific treatment for HER2 i... Background:Current treatment options for human epidermal growth factor receptor 2(HER2)-overexpressing gastric cancer at third-line have shown limited clinical benefit.Further,there is no specific treatment for HER2 immunohistochemistry(IHC)2+and fluorescence in-situ hybridization-negative patients.Here,we report the efficacy and safety of a novel anti-HER2 antibody RC48 for patients with HER2-overexpressing,advanced gastric or gastroesophageal junction cancer.Methods:Patients with HER2-overexpressing(IHC 2+or 3+),locally advanced or metastatic gastric or gastroesophageal junction cancer who were under at least second-line therapy were eligible and received RC482.5 mg/kg alone every 2 weeks.The primary endpoint was the objective response rate(ORR)assessed by an independent review committee.Secondary endpoints included progressionfree survival(PFS),overall survival(OS),duration of response,time to progression,disease control rate,and safety.Results:Of 179 patients screened,125 were eligible and received RC48 treatment.The ORR was 24.8%(95%confidence interval[CI]:17.5%-33.3%).The median PFS and OS were 4.1 months(95%CI:3.7-4.9 months)and 7.9 months(95%CI:6.7-9.9 months),respectively.The most frequently reported adverse events were decreased white blood cell count(53.6%),asthenia(53.6%),hair loss(53.6%),decreased neutrophil count(52.0%),anemia(49.6%),and increased aspartate aminotransferase level(43.2%).Serious adverse events(SAEs)occurred in 45(36.0%)patients,and RC48-related SAEs were mainly decreased neutrophil count(3.2%).Seven patients had adverse events that led to death were not RC48-related.Conclusions:RC48 showed promising activity with manageable safety,suggesting potential application in patients with HER2-overexpressing,advanced gastric or gastroesophageal junction cancer who have previously received at least two lines of chemotherapy. 展开更多
关键词 antibody-drug conjugate gastric cancer HER2-overexpressing phase II clinical trial RC48 third-line therapy
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Effects of dietary arginine levels on growth performance,body composition, serum biochemical indices and resistance ability against ammonia-nitrogen stress in juvenile yellow catfish(Pelteobagrus fulvidraco) 被引量:20
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作者 Qiming Chen Hongxia Zhao +4 位作者 Yanhua Huang Junming Cao Guoxia Wang yuping sun Yongjuan Li 《Animal Nutrition》 SCIE 2016年第3期204-210,共7页
This experiment was conducted to investigate the effects of dietary arginine levels on growth performance, body composition, serum biochemical indices and resistance ability against ammonia-nitrogen stress in juvenile... This experiment was conducted to investigate the effects of dietary arginine levels on growth performance, body composition, serum biochemical indices and resistance ability against ammonia-nitrogen stress in juvenile yellow catfish(Pelteobagrus fulvidraco). Five isonitrogenous and isolipidic diets(42%protein and 9% lipid) were formulated to contain graded levels of arginine(2.44%, 2.64%, 2.81%, 3.01% and3.23% of diet), by supplementing L-Arginine HCI. Seven hundred juvenile yellow catfish with an initial average body weight of 1.13 ± 0.02 g were randomly divided into 5 groups with 4 replicates of 35 fish each and each group was fed one of the diets. After 56 d feeding, fish were exposed to 100 mg/L of ammonia-nitrogen for 72 h. The results showed that weight gain(WG) and specific growth rate(SGR) in2.64% and 2.81% groups were significantly higher than those in 3.23% group(P < 0.05). The feed conversation ratio(FCR) in 2,64%, 2,81% and 3.01% groups was significantly decreased when compared with3,23% group. The protein efficiency ratio(PER) in 2.64% group was significantly higher than that in 2.44%and 3.23% groups(P < 0.05). The condition factor(CF) of fish was significantly higher in 2.81% group than that in 2,44% group(P < 0.05). Dietary arginine levels had no significant effect on hepatosomatic index(HSI), viscerosomatic index(VSI), and whole-body dry matter, crude protein, crude lipid, ash contents, as well as serum total protein(TP), triglyceride(TG), glucose(GLU), urea nitrogen(UN) contents and aspartate aminotransferase(AST), alanine aminotransferase(ALT) activities(P> 0.05). After the fish were challenged to ammonia-nitrogen for 72 h, their cumulative mortality rate in 2.81% group was significantly lower than that in 2.44% group(P < 0.05). The results suggested that dietary arginine level at 2.81%could optimize anti-ammonia-nitrogen stress ability of juvenile yellow catfish and a level of 3.23%arginine seemed to depress the growth performance of fish and decreased their tolerance to the ammonia-nitrogen stress under current study. A quadratic regression analysis based on WG indicated that the optimal dietary arginine requirement of juvenile yellow catfish was estimated to be 2.74% of the diet(6.45% of dietary protein) under current culture conditions. 展开更多
关键词 ARGININE Yellow catfish(Pelteobagrus fulvidraco) Growth performance Body composition Serum biochemical indices Ammonia-nitrogen stress
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Surface modification with oxygen vacancy in Li-rich layered oxide Li1.2Mn0.54Ni0.13Co0.13O2 for lithium-ion batteries 被引量:2
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作者 Bozhou Chen Bangchuan Zhao +4 位作者 Jiafeng Zhou Zhitang Fang Yanan Huang Xuebin Zhu yuping sun 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2019年第6期994-1002,共9页
A couple of layered Li-rich cathode materials Li1.2Mn0.54Ni0.13Co0.13O2 without any carbon modification are successfully synthesized by solvothermal and hydrothermal methods followed by a calcination process. The samp... A couple of layered Li-rich cathode materials Li1.2Mn0.54Ni0.13Co0.13O2 without any carbon modification are successfully synthesized by solvothermal and hydrothermal methods followed by a calcination process. The sample synthesized by the solvothermal method(S-NCM) possesses more homogenous microstructure, lower cation mixing degree and more oxygen vacancies on the surface, compared to the sample prepared by the hydrothermal method(H-NCM). The S-NCM sample exhibits much better cycling performance, higher discharge capacity and more excellent rate performance than H-NCM. At 0.2 C rate,the S-NCM sample delivers a much higher initial discharge capacity of 292.3 mAh g^-1 and the capacity maintains 235 m Ah g^-1 after 150 cycles(80.4% retention), whereas the corresponding capacity values are only 269.2 and 108.5 m Ah g^-1(40.3% retention) for the H-NCM sample. The S-NCM sample also shows the higher rate performance with discharge capacity of 118.3 mAh g^-1 even at a high rate of 10 C, superior to that(46.5 m Ah g^-1) of the H-NCM sample. The superior electrochemical performance of the S-NCM sample can be ascribed to its well-ordered structure, much larger specific surface area and much more oxygen vacancies located on the surface. 展开更多
关键词 Li-rich cathode oxide material Oxygen VACANCY SOLVOTHERMAL method Electrochemical performance
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Design of flexible inorganic BiFe_(0.93)Mn_(0.07)O_(3) ferroelectric thin films for nonvolatile memory 被引量:2
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作者 Bingbing Yang Chenhui Li +6 位作者 Miao Liu Renhuai Wei Xianwu Tang Ling Hu Wenhai Song Xuebin Zhu yuping sun 《Journal of Materiomics》 SCIE EI 2020年第3期600-606,共7页
Flexible ferroelectric memories,endowing with high data storage density,provide a chance for the nextgeneration wearable electronics.Here,flexible inorganic Mn-doped BiFeO_(3) thin films were directly integrated on fl... Flexible ferroelectric memories,endowing with high data storage density,provide a chance for the nextgeneration wearable electronics.Here,flexible inorganic Mn-doped BiFeO_(3) thin films were directly integrated on fluorophlogopite mica(F-Mica)substrates by an easy and low-cost all solution chemical solution deposition(AS-CSD)route.The integration of LaNiO_(3) buffer layer can improve the film surface density and uniformity.The flexible characteristic can be achieved by reducing the thickness of F-Mica substrates for the ferroelectric thin films.In contrast to BiFe_(0.93)Mn_(0.07)O_(3)/LaNiO_(3)/Si thin film deposited on rigid substrates(Si),the BiFe_(0.93)Mn_(0.07)O_(3)/LaNiO_(3)/F-mica fabricated on F-Mica show better ferroelectric performances due to the improved crystal growth and less defects.More importantly,the obtained BiFe_(0.93)Mn_(0.07)O_(3)/LaNiO_(3)/F-mica ferroelectric thin films still show large remnant polarization of Pr ~64 μC/cm^(2)(deterioration of ~7.2%),good antifatigue properties up to 1.2×10^(8) cycles and outstanding retention behaviors for 1.6×10^(4) s after continuous bending.This work will provide a feasible route to fabricate flexible inorganic ferroelectric thin films through low-cost solution method and show attractive comprehensive performances in next-generation wearable smart devices. 展开更多
关键词 Inorganic ferroelectric Flexible electronics Lead-free BiFe_(0.93)Mn_(0.07)O_(3)
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Realization of high-purity 1T-MoS_(2)by hydrothermal synthesis through synergistic effect of nitric acid and ethanol for supercapacitors 被引量:1
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作者 Han Li Hui Li +5 位作者 Ziqiang Wu Lili Zhu Changdian Li Shuai Lin Xuebin Zhu yuping sun 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2022年第28期34-40,共7页
Phase engineering of molybdenum disulfide(MoS_(2))can achieve phase transformation from the semiconducting phase(2H-MoS_(2))with poor conductivity to the metallic phase(1T-MoS_(2))with superior electrochemical propert... Phase engineering of molybdenum disulfide(MoS_(2))can achieve phase transformation from the semiconducting phase(2H-MoS_(2))with poor conductivity to the metallic phase(1T-MoS_(2))with superior electrochemical properties.Therefore,it is desirable to prepare high concentration 1T-MoS_(2)by simple and facile methods.In this work,MoS_(2)with high concentration of 1T phase is successfully prepared by one-pot hydrothermal synthesis through the synergistic effect of HNO_(3)and CH_(3)CH_(2)OH,which is stable for more than half of a year.The as-synthesized MoS_(2)shows high capacitance of 392Fg^(-1)at 1A g^(-1)as used for supercapacitors electrodes,and displays excellent capacitance retention(83%after 10,000 cycles).Asymmetric supercapacitors(ASCs)devices assembled by the as-synthesized MoS_(2)and MnO_(2)on carbon cloths,exhibit high energy and power densities(0.194 m Wh cm^(-2)and 13.466 mW cm^(-2)).These results shed a light to realize 1T phase MoS_(2)through the synergistic effect in hydrothermal processing. 展开更多
关键词 MoS_(2) Metallic phase Synergistic effect Hydrothermal synthesis SUPERCAPACITOR
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Atomic scale electronic structure of the ferromagnetic semiconductor Cr2Ge2Te6 被引量:1
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作者 Zhenqi Hao Haiwei Li +6 位作者 Shunhong Zhang Xintong Li Gaoting Lin Xuan Luo yuping sun Zheng Liu Yayu Wang 《Science Bulletin》 SCIE EI CSCD 2018年第13期825-830,共6页
Cr_2Ge_2Te_6is an intrinsic ferromagnetic semiconductor with van der Waals type layered structure,thus represents a promising material for novel electronic and spintronic devices.Here we combine scanning tunneling mic... Cr_2Ge_2Te_6is an intrinsic ferromagnetic semiconductor with van der Waals type layered structure,thus represents a promising material for novel electronic and spintronic devices.Here we combine scanning tunneling microscopy and first-principles calculations to investigate the electronic structure of Cr_2Ge_2Te_6.Tunneling spectroscopy reveals a surprising large energy level shift and change of energy gap size across the ferromagnetic to paramagnetic phase transition,as well as a peculiar double-peak electronic state on the Cr-site defect.These features can be quantitatively explained by density functional theory calculations,which uncover a close relationship between the electronic structure and magnetic order.These findings shed important new lights on the microscopic electronic structure and origin of magnetic order in Cr_2Ge_2Te_6. 展开更多
关键词 Ferromagnetic semiconductor Electronic structure Scanning tunneling microscopy Density functional theory
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Preparation and Characterization of Ca_3Co_4O_9 Thin Films on Polycrystalline Al_2O_3 Substrates by Chemical Solution Deposition 被引量:1
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作者 Yankun Fu Xianwu Tang +3 位作者 Jie Yang Hongbin Jian Xuebin Zhu yuping sun 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2013年第1期13-16,共4页
Ca3Co409 thin films have been first prepared on polycrystalline AI203 substrates using chemical solution deposition method by multiple annealing processing. It is observed that the derived thin films are c-axis orient... Ca3Co409 thin films have been first prepared on polycrystalline AI203 substrates using chemical solution deposition method by multiple annealing processing. It is observed that the derived thin films are c-axis oriented although the substrates are polycrystalline AI203 substrates, suggesting the self-assembled c-axis orientation. The annealing temperature effects on the properties are investigated and discussed. The best performances are attributed to the 850 ℃-annealed sample, whose resistivity, Seebeck coefficient and power factor at 300 K are 7.4 mΩ cm, 117 μV/K and 0.18 mW/m K-2 respectively, which is even better than those of the thin films deposited on single crystal substrates. The results will provide an effective route to optimize the properties of Ca3Co409 thin films using chemical solution deposition by multiple annealing processing even the substrates are polycrystalline. 展开更多
关键词 Chemical solution deposition THERMOELECTRIC COBALTATE
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Superconductivity in ThMo_2Si_2C with Mo_2C square net 被引量:1
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作者 ZiChen Liu BaiZhuo Li +16 位作者 YuSen Xiao QingChen Duan YanWei Cui YuXue Mei Qian Tao ShuLi Wei ShuGang Tan Qiang Jing Qing Lu yuping sun YunYan Liu ShengGui Fu Hao Jiang Zhi Ren ZhuAn Xu Cao Wang GuangHan Cao 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS CSCD 2021年第7期120-125,共6页
We report the superconductivity of a new quaternary compound ThMo_(2)Si_(2)C, synthesized with the arc-melting technique. The compound crystallizes in a tetragonal CeCr_(2)Si_(2)C-type structure with cell parameters o... We report the superconductivity of a new quaternary compound ThMo_(2)Si_(2)C, synthesized with the arc-melting technique. The compound crystallizes in a tetragonal CeCr_(2)Si_(2)C-type structure with cell parameters of a = 4.2296A and c = 5.3571 A. An interlayer Si–Si covalent bonding is suggested by the atomic distance. The electrical resistivity and magnetic susceptibility measurements indicate a Pauli-paramagnetic metal with dominant electron-electron scattering in the normal-state. Bulk superconductivity at 2.2 K is demonstrated with a dimensionless specific-heat jump of △C/γnT = 0.98. The superconducting parameters of the critical magnetic fields, coherence length, penetration depth, and superconducting energy gap are given. 展开更多
关键词 SUPERCONDUCTIVITY quaternary compound physical properties
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Intracavity biosensor based on the Nd:YAG waveguide laser: tumor cells and dextrose solutions 被引量:1
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作者 GUANHUA LI HUIYUAN LI +4 位作者 RUMEI GONG YANG TAN JAVIER RODRíGUEZ VáZQUEZ DE ALDANA yuping sun FENG CHEN 《Photonics Research》 SCIE EI 2017年第6期247-251,共5页
This work demonstrates the Nd:YAG waveguide laser as an efficient platform for the bio-sensing of dextrose solutions and tumor cells. The waveguide was fabricated in an Nd:YAG crystal with the cooperation of ultrafast... This work demonstrates the Nd:YAG waveguide laser as an efficient platform for the bio-sensing of dextrose solutions and tumor cells. The waveguide was fabricated in an Nd:YAG crystal with the cooperation of ultrafast laser writing and ion irradiation. The laser oscillation in the Nd:YAG waveguide is ultrasensitive to the external environment of the waveguide. Even a weak disturbance leads to a large variation of the output power of the laser.According to this feature, an Nd:YAG waveguide coated with graphene and WSe_2 layers is used as substrate for the microfluidic channel. When the microflow crosses the Nd:YAG waveguide, the laser oscillation in the waveguide is disturbed and induces fluctuation of the output laser. According to the fluctuation, the microflow is detected with a sensitivity of 10 mW/RIU. 展开更多
关键词 YAG Intracavity biosensor based on the Nd:YAG waveguide laser tumor cells and dextrose solutions Nd
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Modulation of electronic state in copper-intercalated 1T-TaS_(2)
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作者 Wenhao Zhang Degong Ding +10 位作者 Jingjing Gao Kunliang Bu Zongxiu Wu Li Wang Fangsen Li Wei Wang Xuan Luo Wenjian Lu Chuanhong Jin yuping sun Yi Yin 《Nano Research》 SCIE EI CSCD 2022年第5期4327-4333,共7页
Intercalation is an effective method to modify physical properties and induce novel electronic states of transition metal dichalcogenide(TMD)materials.However,it is difficult to reveal the microscopic electronic state... Intercalation is an effective method to modify physical properties and induce novel electronic states of transition metal dichalcogenide(TMD)materials.However,it is difficult to reveal the microscopic electronic state evolution in the intercalated TMDs.Here we successfully synthesize the copper-intercalated 1T-TaS_(2) and characterize the structural and electronic modification combining resistivity measurements,atomic-resolution scanning transmission electron microscopy(ADF-STEM),and scanning tunneling microscopy(STM).The intercalated Cu atom is determined to be directly below the Ta atom and suppresses the commensurate charge density wave(CCDW)phase.Two specific electronic modulations are discovered in the near-commensurate(NC)CDW phase:the electron doping state near the defective star of Davids(SDs)in metallic domains and the spatial evolution of the Mott gap in insulating domains.Both modulations reveal that intercalated Cu atoms act as a medium to enhance the interaction between intralayer SDs,in addition to the general charge transfer effect.It also solidifies the Mott foundation of the insulating gap in pristine samples.The intriguing electronic evolution in Cu-intercalated 1T-TaS_(2) will motivate further exploration of novel electronic states in the intercalated TMD materials. 展开更多
关键词 INTERCALATION scanning tunneling microscopy Mott insulator charge transfer electron doping
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Metal/antiperovskite metal nitride composites Ag/AgNNi_(3)as novel efficient electrocatalysts for hydrogen evolution reaction in alkaline media
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作者 Lili Zhu Bingbing Yang +7 位作者 Ziqiang Wu Changdian Li Han Li Hui Li Yanan Huang Xiaoguang Zhu Xuebin Zhu yuping sun 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2022年第17期222-229,共8页
Searching for effective hydrogen evolution reaction(HER)electrocatalysts is crucial for water splitting.Transition metal nitrides(TMNs)are very attractive potential candidates since of high electrical conductivity,rob... Searching for effective hydrogen evolution reaction(HER)electrocatalysts is crucial for water splitting.Transition metal nitrides(TMNs)are very attractive potential candidates since of high electrical conductivity,robust stability,element rich and high activity.Antiperovskite metal nitrides provide chemical flexibility since two different types of transition metal elements are contained,allowing partial substitution both for A-and M-sites.Herein,we report a novel antiperovskite metal nitride Ag_(x)Ni_(1-x)NNi_(3)(0≤x≤0.80)thin film used as highly effective HER electrocatalysts.Pure phase antiperovskite nitride can be successfully obtained for Ag_(x)Ni_(1-x)NNi_(3)with x less than 0.80.The Ag_(0.76)Ni_(0.24)NNi_(3) towards HER shows an overpotential of 122 mV at 10 mA cm^(-2)in alkaline media.Furthermore,considering the role of Ag for adsorbing hydroxyl groups,chemical engineering has been carried out for designing metal/antiperovskite nitride Ag/Ag_(x)Ni_(1-x)NNi_(3)composite electrocatalysts.The 0.18 Ag/Ag_(0.80)Ni_(0.20)NNi_(3)electrocatalyst shows a mere 13 and 81 mV of overpotential to reach 1 and 10 mA cm^(-2),respectively,showing high durability in alkaline media.These results will provide a novel type of HER catalysts based on antiperovskite metal nitrides and a strategic design for metal/antiperovskite metal nitride composite electrocatalysts for HER in alkaline media. 展开更多
关键词 Hydrogen evolution reaction ANTIPEROVSKITE Metal nitride Composite catalyst
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The correlated study of hyperuricemia and metabolicsyndromes among males of Han ethnicity in the Xinjiang UygurAutonomous Region,China
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作者 Hua YAO yuping sun +6 位作者 Qing LI Wenhai YAO Qiuyun WANG Jing HU Gulibaha ABUDUREHEMAN Ling TUO Yan JIANG 《Frontiers of Medicine》 SCIE CSCD 2008年第1期108-112,共5页
This study investigates the relationship between hyperuricemia and metabolic syndrome(MS)among males of Han ethnicity in the Xinjiang Uygur Autonomous Region,China.The blood samples were collected from January to May,... This study investigates the relationship between hyperuricemia and metabolic syndrome(MS)among males of Han ethnicity in the Xinjiang Uygur Autonomous Region,China.The blood samples were collected from January to May,2006 in Urumqi.It included 1496 subjects with ages between 20 to 70 years.All these subjects had physical examinations,blood pressure(BP)measurement and analysis for serum uric acid(SUA),fasting blood sugar(FBS),serum triglycer-ide(TG),serum total cholesterol(TC),serum high den-sity lipoprotein(HDL-C)and serum low density lipoprotein(LDL-C)as well as biochemistry assay.The Data were analyzed using the Pearson Chi-Square Test,Independent-Samples T-Test and the Mantel-Haenszel Test for linear trend,respectively.The results show that the prevalence of MS in the present study was 18%.Blood pressure,fasting blood sugar,body mass index(BMI),waist/hip ratio(WHR),TG,TC and LDL-C were significantly higher in the hyperuricemic group than in normal group and these parameters were strongly related to serum uric acid levels.The com-ponents of metabolic syndrome such as obesity,hyper-glycemia,hypertension and dyslipidemia had a close correlation with SUA.The Odds ratios of these meta-bolic diseases in the hyperuricemic group were 3.097 times,2.633 times,2.226 times and 3.058 times of the normal SUA group,respectively.They all have a positive correlation with hyperuricemia.Hyperurice-mia is closely linked to the various components of the metabolic syndrome.More emphasis should be put on the evolving control and prevalence of hyperuricemia and metabolic syndrome among males of Han ethnicity in Xinjiang. 展开更多
关键词 HYPERURICEMIA metabolic syndrome correla-tion DYSLIPIDEMIA
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