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Iontronic pressure sensor with high sensitivity and linear response over a wide pressure range based on soft micropillared electrodes

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science Bulletin 2021年第11期66卷 1091-1100,M0003页

作者： Peng Lu Liu Wang Pang Zhu Jun Huang Yueji Wang Ningning Bai Yan Wang Gang Li Junlong Yang Kewei Xie Jianming Zhang Bo Yu Yuan Dai Chuan Fei Guo Department of Materials science and Engineering Southern University of Science and TechnologyShenzhen 518055China Academy for Advanced Interdisciplinary Studies Southern University of Science and TechnologyShenzhen 518055China Ningbo Fengcheng Advanced Energy Materials Research Institute Ningbo 315500China Tencent Robotics X Shenzhen 518000China Centers for Mechanical Engineering Research and Education at MIT and sustech&Shenzhen Engineering Research Center for Novel Electronic Information Materials and Devices Southern University of Science and TechnologyShenzhen 518055China

Electronic skins and flexible pressure sensors are important devices for advanced healthcare and intelligent *** is a key parameter of flexible pressure *** introducing surface microstructures in a capacitive-type sensor can significantly improve its sensitivity,the signal becomes nonlinear and the pressure response range gets much narrower,significantly limiting the applications of flexible pressure ***,we designed a pressure sensor that utilizes a nanoscale iontronic interface of an ionic gel layer and a micropillared electrode,for highly linear capacitance-to-pressure response and high sensitivity over a wide pressure *** micropillars undergo three stages of deformation upon loading:initial contact(0-6 k Pa)and structure buckling(6-12 k Pa)that exhibit a low and nonlinear response,as well as a post-buckling stage that has a high signal linearity with high sensitivity(33.16 k Pa-1)over a broad pressure range of 12-176 k *** high linearity lies in the subtle balance between the structure compression and mechanical matching of the two materials at the gel-electrode *** sensor has been applied in pulse detection,plantar pressure mapping,and grasp task of an artificial *** work provides a physical insight in achieving linear response through the design of appropriate microstructures and selection of materials with suitable modulus in flexible pressure sensors,which are potentially useful in intelligent robots and health monitoring.

关键词： Iontronic interface Linearity Flexible pressure sensor Mechanical matching

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Establishment of a genetic transformation system for maize inbred P9-10

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Chinese science Bulletin 1999年第7期44卷 624-627页

作者： Fengyong Zhou Guoying Wang Youju Xie Hongzhi Cui Sandui Guo Jingruil Dai China Agr univ State Key Lab Agrobiotechnol Beijing 100094 Peoples R China China Agr univ Coll Plant Sci & Technol Beijing 100094 Peoples R China Chinese Acad Agr sci Ctr Biotechnol Beijing 100081 Peoples R China

It was found that the supplement of 10-4 mol/L AgNO3 in N6 medium enhanced the induction of type Ⅰembryogenic calli from immature embryos of maize inbred P9-10. After high-osmotic treatment, the induced calli was taken as transformation recipient to be bombarded with plasmid pMG6 carrying synthetic Bt gene by PDS-1000/He genegun. A total of 14 resistant calli were obtained after screening subsequently on the mediums with gradually increasing selective pressure. 10 plants were regenerated from the resistant calli on 3 different induction media,and 8 out of the 10 regenerated plants were confirmed to be integrated with Bt gene by PCR and southern blotting analysis. Results of ELISA showed that the Bt-protein content in the leaves of the transgenic plants varied between 20—200 ng/g fresh weight.

关键词： maize inbred genetic transformation Bt gene.

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Effect of pouring temperature on thixotropic microstructure formation of AZ91

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Rare Metals 2007年第S1期26卷 180-184页

作者： NING Zhiliang1),WU Peilian1),Wang H.2),CAO Fuyang1),and SUN Jianfei1)1) School of Materials science & Engineering,Harbin Institute of technology,Harbin 150001,China 2) Faculty of Engineering & Surveying,university of southern Queensland,Toowoomba,Queensland 4350,Australia Harbin Inst technol Sch Mat Sci & Engn Harbin 150001 Peoples R China univ So Queensland Fac Engn & Surveying Toowoomba Qld 4350 Australia

The effect of pouring temperature on thixotropic microstructure of AZ91 was *** results show that the pouring temperature has a pronounced effect both on microstructural morphology and grain *** decreasing the pouring temperature,the morphology of grains changes from coarse dendritic to fine dendritic *** fine dendritic structure that was obtained at low pouring temperature developed into a globular structure with a grain size of 60 μm,if the AZ91 was partially remelted and held isothermally at the semisolid state(575 ℃).On the other hand,if the alloy was poured at a high superheat,the particles were irregular and interconnected with a grain size of 180 μm even after 20 min of isothermal holding.

关键词： pouring temperature semisolid microstructural evolution

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The Features and Regulation of Co-transcriptional Splicing in Arabidopsis

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Molecular Plant 2020年第2期13卷 278-294页

作者： Danling Zhu Fei Mao Yuanchun Tian Xiaoya Lin Lianfeng Gu Hongya Gu Li-jia Qu Yufeng Wu Zhe Wu sustech-PKU Institute of Plant and Food science Department of BiologySouthern University of Science and TechnologyShenzhen 518055China State Key Laboratory for Crop Genetics and Germplasm Enhancement Bioinformatics CenterNanjing Agriculture UniversityNanjingJiangsu 210095China State Key Laboratory of Protein and Plant Gene Research Peking-Tsinghua Center for Life SciencesCollege of Life SciencesPeking UniversityBeijing 100871China Basic Forestry and Proteomics Research Center College of ForestryFujian Agriculture and Forestry UniversityFuzhou 350002China Present address:School of Life sciences Guangzhou UniversityGuangzhou 510006China

Precursor mRNA(pre-mRNA)splicing is essential for gene expression in most eukaryotic *** studies from mammals,Drosophila,and yeast show that the majority of splicing events occurs *** plants,however,the features of co-transcriptional splicing(CTS)and its regulation still remain largely ***,we used chromatin-bound RNA sequencing to study CTS in Arabidopsis *** found that CTS is widespread in Arabidopsis seedlings,with a large proportion of alternative splicing events determined *** efficiency correlated with gene expression level,the chromatin landscape and,most surprisingly,the number of introns and exons of individual genes,but is independent of gene *** combination with enhanced crosslinking and immunoprecipitation sequencing analysis,we further showed that the hnRNP-like proteins RZ-1B and RZ-1C promote efficient CTS globally through direct binding,frequently to exonic ***,this general effect of RZ-1B/1C on splicing promotion is mainly observed at the chromatin level,not at the mRNA ***-1C promotes CTS of multiple-exon genes in association with its binding to regions both proximal and distal to the regulated *** propose that RZ-1C promotes efficient CTS of genes with multiple exons through cooperative interactions with many exons,introns,and splicing *** work thus reveals important features of CTS in plants and provides methodologies for the investigation of CTS and RNA-binding proteins in plants.

关键词： co-transcriptional splicing CB-RNA-seq eClip-seq RNA binding protein chromatin transcription

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Chlorinated polymer solar cells simultaneously enhanced by fullerene and non-fullerene ternary strategies

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Journal of Energy Chemistry 2021年第3期30卷 620-625页

作者： Longzhu Liu Pengjie Chao Daize Mo Feng He School of Chemistry and Chemical Engineering Harbin Institute of TechnologyHarbin 150001HeilongjiangChina Shenzhen Grubbs Institute and Department of Chemistry Southern University of Science and TechnologyShenzhen 518055GuangdongChina Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and TechnologyShenzhen 518055GuangdongChina

To achieve efficient polymer solar cells(PSCs)with full utilization of the whole spectrum,the multicomponent devices are of great importance to be deeply explored,especially for their capability of one-step ***,the research about one same binary system simultaneously derivated various multi-component PSC is still very ***,we achieved the whole constructions from one binary host to different ternary systems and even the quaternary *** ternary strategies with fullerene acceptor,PC_(71)BM,and non-fullerene acceptor,BT_(6)IC-BO-4Cl,as the third component,both boosted the device efficiencies of PBT4Cl-Bz:IT-4F binary system from about 9% to comparatively beyond 11%.Despite the comparable improvement of performance,there existed other similarities and differences in two ternary *** detail,the isotropic carrier transport of PC_(71)BM which largely elevated the fill factor(FF)in the corresponding devices,while the strong absorption of BT_(6)IC-BO-4Cl enhanced the short current density(J_(SC))*** interestingly,quaternary devices based on PBT4Cl-Bz:IT-4F:PC71 BM:BT_(6)IC-BO-4Cl could combine both advantages of fullerene and non-fullerene ternary strategies,further pumped the J_(SC) from 16.44 to the highest level of 19.66 mA cm^(-2) among all devices,eventually resulted in an optimized efficiency of 11.69%.It reveals that both fullerene and non-fullerene ternary strategies have their unique feature to elevate the device performance either by efficient isotropic carrier transport or better coverage of whole sunlight spectrum and easy tunable energy levels from organic *** key is how to integrate the two pathways in one system and provide a more competitive solution facing high-quality PSCs.

关键词： Chlorination Polymer solar cell Multi-component Fullerene Non-fullerene

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Pn-wave velocity and anisotropy of the western Sichuan and Longmen Mountain region,China

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science China Earth sciences 2010年第11期53卷 1665-1670页

作者： Xu Yi Li ZhiWei Huang RunQiu Liu JianHua Liu JinSong Chinese Acad sci Inst Geol & Geophys Key Lab Petr Resources Res Beijing 100029 Peoples R China Chengdu univ technol State Key Lab Geohazard Prevent & Geoenvironm Chengdu 610059 Peoples R China

Pn-wave velocity and anisotropy beneath the western Sichuan and adjacent region are inverted by a tomography method using arrival data from earthquakes recorded by the Sichuan Earthquake Network. It is followed by an analysis of the uppermost mantle structure of the Longmen Mountain region and the deep tectonics of the Ms8.0 earthquake in Wenchuan. Our results reveal a prominent velocity contrast across the Longmenshan fault: low velocities in the Songpan-Ganzi mountain range and high velocities in the Sichuan basin. They indicate that the Songpan-Ganzi mountain range is underlain by a weak uppermost mantle, which is easy to create ductile flow, whereas the Sichuan basin has a mechanically strong uppermost mantle. These features reflect a difference of the lithospheric mantle beneath tectonically active mountain range and stable basin. The boundary between the high and low velocities is coincident with the Longmenshan fault. Bordered by Wenchuan, the northern part of the boundary is parallel to the fault belt and aftershock distribution, but the southern part of the boundary deviates from the fault belt and is bent toward the Sichuan basin. The Ms8.0 earthquake in Wenchuan is located at the flexural part between them, where a strong heterogeneity is shown in the velocity variation across and parallel to the boundary. This area is reasonably believed as a potential location for regional stress accumulation and release in the Longmen Mountain region, reflecting a prominent character in the deep structure around Wenchuan. Pn-wave anisotropy reveals the mantle flow that is consistent with the eastward movement of the Tibetan Plateau. This process provided deep dynamic sourse for tectonic deformation in the Longmen Mountain region and for the occurrence of the Wenchuan Ms8.0 earthquake, but it is clearly affected by the strong lithosphere of the Sichuan basin. There is no correlation between the Pn-wave anisotropy and the Longmenshan fault, hence, this fault system is on

关键词： western Sichuan Longmen Mountain Pn velocity anisotropy Wenchuan earthquake

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Tuning the Molecular Weight of Chlorine-Substituted Polymer Donors for Small Energy Loss

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Chinese Journal of Chemistry 2021年第6期39卷 1651-1658页

作者： Tingxing Zhao Huan Wang Mingrui Pu Hanjian Lai Hui Chen Yulin Zhu Nan Zheng Feng He Shenzhen Grubbs Institute and Department of Chemistry Southern University of Science and TechnologyShenzhenGuangdong 518055China Academy for Advanced Interdisciplinary Studies Southern University of Science and TechnologyShenzhenGuangdong 518055China Institute of Polymer Optoelectronic Materials and Devices State Key Loborotory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhouGuangdong 510640China Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and TechnologyShenzhenGuangdong 518055China

The molecular weight of polymers plays a major role in their aggregation and miscibility in active layer,which eventually dominate the energy loss and device performance.A series of chlorine-substituted PBD-CI polymers with controlled molecular weight have been synthesized as templates to discern a relationship between molecular weight and the optical properties,energy levels,morphologies,energy loss and photovoltaic *** it has similar optical and electrochemical properties,when blended with acceptor N3,the low molecular weight polymer PBD-CI_(L) gives the biggest energy loss value,and a PCE of 12.06%.PBD-CI_(H) shows a moderate energy loss,but displays the lowest PCE of 9.00%as a result of excessive ***-CI_(M) with a medium molecular weight gives the smallest energy loss and achieves a PCE of 17.17%,which is among one of the highest values recorded to date for the C卜substituted polymer solar ***,the molecular weight mainly affects the nonradiative energy loss(△E_(3)), PBD-CI_(M) also shows the smallest value of 0.252 eV among three polymer *** results show the effect of controlling the molecular weight to achieve a small energy loss and provide guidelines which can lead to an understanding of the real photovoltaic performance of new materials.

关键词： Molecular weight Chlorine Miscibility Energy loss Renewable resources

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Boundary Homogenization of a Class of Obstacle Problems

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Annals of Applied Mathematics 2022年第2期38卷 240-260页

作者： Jingzhi Li Hongyu Liu Lan Tang Jiangwen Wang Department of Mathematics Southern Uniersity of Science and TechnologyShenzhenGuangdong 518055China sustech International Center for Mathematics ShenzhenGuangdong 518055 China National Center for Applied Mathematics ShenzhenGuangdong 518055 China Department of Mathematics City University of Hong KongKowloonHong KongChina School of Mathematics and Statistics Central China Normal UniversityWuhanHubei 430079China

We study the homogenization of a boundary obstacle problem on a C^(1,α)-domain D for some elliptic equations with uniformly elliptic coefficient matricesγ.For anyε∈R+,■D=Γ∪E,Γ∩∑=Фand Sε■∑with suitable assumptions,we prove that asεtends to zero,the energy minimizer u^(ε) of∫_(D)|γ▽u|^(2) dx,subject to u≥φcp on S_(ε),up to a subsequence,converges weakly in H^(1)(D)to u,which minimizes the energy functional∫D|r▽u|^(2)+∫∑(u-φ)^(2)-μ(x)dS_(x),whereμ(x)depends on the structure of Sεandφis any given function in C∞(D).

关键词： Homogenization boundary obstacle correctors asymptotic analysis

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Anionic entanglement-induced giant thermopower in ionic thermoelectric material Gelatin-CF_(3)SO_(3)K–CH_(3)SO_(3)K

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escience 2023年第5期3卷 105-112页

作者： Qikai Li Cheng-Gong Han Shuaihua Wang Cai-Chao Ye Xinbo Zhang Xiao Ma Tao Feng Yuchen Li Weishu Liu Department of Materials science and Engineering Southern University of Science and TechnologyShenzhenGuangdong 518055China Shenzhen Engineering Research Center for Novel Electronic Information Materials and Devices Southern University of Science and TechnologyShenzhen 518055China Department of Mechanical Engineering The University of Hong KongPokfulam Road 999077Hong KongChina Center for Advanced Analytical science Guangzhou Key Laboratory of Sensing Materials and DevicesGuangdong Engineering Technology Research Center for Photoelectric Sensing Materials and DevicesSchool of Chemistry and Chemical EngineeringGuangzhou UniversityGuangzhou 510006China

Ionic thermoelectric(i-TE)technologies can power Internet of Things(IoT)sensors by harvesting thermal energy from the environment because of their large *** research focuses mostly on using the interactions between ions and matrices to enhance i-TE performance,but i-TE materials can benefit from utilizing different methods to control ion ***,we introduced a new strategy that employs an ion entanglement effect.A giant thermopower of 28 mV K^(-1)was obtained in a quasi-solid-state i-TE Gelatin-CF_(3)SO_(3)K–CH_(3)SO_(3)K gel via entanglement between CF_(3)SO_(3)^(-)and CH_(3)SO_(3)^(-)*** anionic entanglement effect involves complex interactions between these two anions,slowing anionic thermodiffusion and thus suppressing bipolar effects and boosting p-type thermopower.A Au@Cu|Gelatin-CF_(3)SO_(3)K–CH_(3)SO_(3)K|Au@Cu i-TE device with a generator mode delivers a specific output energy density of 67.2 mJ m^(-2)K^(-2)during 2 h of ***-term operation.

关键词： Thermopower Thermodiffusion Ion interactions Energy harvesting Gelatin

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A study of GWAS-supported variants rs9943582 in a Chinese Han population with ischemic stroke:no associations with disease onset and clinical outcomes

A study of GWAS-supported variants rs9943582 in a Chinese Ha...

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2019年浙江省神经病学学术大会

作者： Hao Zhang Lingli Sun Huaiming Wang Huan Cai Guozhong Niu Yongjie Bai Yun Zhang Dong Yang Mengmeng Gu Pengfei Xu Xinying Fan Xinfeng Liu Gelin Xu Department of Neurology Affiliated Hangzhou First People's HospitalZhejiang University School of Medicine Department of Neurology Jinling HospitalMedical School of Nanjing University Departmentof Neurology Jinling HospitalSecond Military Medical University Department of Neurology Jinling HospitalSouthern Medical University Department of Neurology Jinling HospitalNanjing Medical University Department of Neurology Henan Univ Sci & TechnolAffiliated Hosp 1Dept Neurol

The variant rs9943582 of APLNR(apelin receptor) was identified by a large-scale association study to be associated with an increased risk of ischemic stroke in a Japanese *** conducted this study to investigate the association between the variant and age of onset and clinical outcomes of ischemic stroke in a Chinese *** multiple ligase detection reaction was used to genotype the *** compared the mean age at ischemic stroke onset with one-way ***-Meier method,log-rank test and the Cox proportional hazards regression models were performed to analyze the association between the variant and ischemic stroke clinical outcomes(recurrence and death).A total of 916 ischemic stroke patients were recruited in the *** age at ischemic stroke onset,no significant association was identified with the variant in any genetic *** addition,the variant was not strongly associated with recurrence and death risk of ischemic stroke,shown by the *** findings indicated that the variant rs9943582 was not associated with age at onset and clinical outcomes of ischemic ***,evidence from well-designed studies with larger and other ethnic populations are warranted to further explore the effects of APLNR on the ischemic stroke onset and clinical outcomes.

关键词： rs9943582 APLNR Ischemic stroke outcom

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