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Micro-scale opto-thermo-mechanical actuation in the dry adhesive regime

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Light(Science & Applications) 2021年第10期10卷 1905-1914页

作者： weiwei Tang wei Lyu Jinsheng Lu Fengjiang Liu Jiyong wang wei Yan Min Qiu Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province School of EngineeringWestlake University18 Shilongshan RoadHangzhou 310024 Zhejiang ProvinceChina Institute of Advanced Technology Westlake Institute for Advanced Study18 Shilongshan RoadHangzhou 310024 Zhejiang ProvinceChina State Key Laboratory of Modern Optical Instrumentation College of Optical Science and EngineeringZhejiang UniversityHangzhou 310027China

Realizing optical manipulation of microscopic objects is crucial in the research fields of life science,condensed matter physics,and physical *** non-liquid environments,this task is commonly regarded as difficult due to strong adhesive surface force(~µN)attached to solid interfaces that makes tiny optical driven force(~pN)***,by recognizing the microscopic interaction mechanism between friction force—the parallel component of surface force on a contact surface—and thermoelastic waves induced by pulsed optical absorption,we establish a general principle enabling the actuation of micro-objects on dry frictional surfaces based on the opto-thermo-mechanical ***,we predict that nanosecond pulsed optical absorption with mW-scale peak power is sufficient to tameµN-scale friction ***,we demonstrate the two-dimensional spiral motion of gold plates on micro-fibers driven by nanosecond laser pulses,and reveal the rules of motion *** results pave the way for the future development of micro-scale actuators in non-liquid environments.

关键词： friction regime absorption

Measurement and prediction of isothermal vapor–liquid equilibrium of a-pinene+camphene/longifolene+abietic acid+palustric acid+neoabietic acid systems

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Chinese Journal of Chemical Engineering 2023年第1期53卷 155-169页

作者： Youqi Li Xiaopeng Chen Linlin wang Xiaojie wei weijian Nong Xuejuan wei Jiezhen Liang Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology School of Chemistry and Chemical EngineeringGuangxi UniversityNanning 530004China China Academy of Science and Technology Development Guangxi Branch Nanning 530022China Guangxi Sci-Tech Development Forest-like Technology Co.Ltd Nanning 530022China

The vapor–liquid equilibrium(VLE)data of a-pinene+camphene+[abietic acid+palustric acid+neoabietic acid]and a-pinene+longifolene+[abietic acid+palustric acid+neoabietic acid]systems at 313.15 K,333.15 K and 358.15 K were measured by headspace gas chromatography(HSGC).These data was compared with the predictions value by conductor-like screening model for realistic solvation(COSMO-RS).Moreover,the calculated data of COSMO-RS and Non-Random Two-Liquids(NRTL)models showed good agreement with the experimental *** was found that the three resin acids inhibited the volatility of a-pinene,camphene and longifolene and resulted in the decrease of total ***,HE(HB)contributes the most to the excess enthalpy and the hydrogen bonding interaction is the dominant intermolecular force of a-pinene,camphene and longifolene with the three resin *** addition,the geometric structures optimization and binding energy were obtained by the DFT to further illustrate the hydrogen bonding interaction and the effects of the addition of the three resin acids on the isothermal VLE.

关键词： Isothermal vapor–liquid equilibrium Headspace gas chromatography COSMO-RS model DFT

Potential applications of artificial intelligence in colorectal polyps and cancer: Recent advances and prospects

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World Journal of Gastroenterology 2020年第34期26卷 5090-5100页

作者： Ke-wei wang Ming Dong Department of Gastrointestinal Surgery the First Affiliated Hospital of China Medical UniversityShenyang 110001Liaoning ProvinceChina

Since the advent of artificial intelligence(AI)technology,it has been constantly studied and has achieved rapid *** AI assistant system is expected to improve the quality of automatic polyp detection and *** could also help prevent endoscopists from missing polyps and make an accurate optical *** functions provided by AI could result in a higher adenoma detection rate and decrease the cost of polypectomy for hyperplastic *** addition,AI has good performance in the staging,diagnosis,and segmentation of colorectal *** article provides an overview of recent research focusing on the application of AI in colorectal polyps and cancer and highlights the advances achieved.

关键词： Artificial intelligence Deep learning Computer-assisted diagnosis Colorectal polyps Colorectal cancer

Influence of Sc Addition on Precipitation Behavior and Properties of Al-Cu-Mg Alloy

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Acta Metallurgica Sinica(English Letters) 2022年第6期35卷 948-960页

作者： Xiangbin Han Shuangbao wang Bo wei Shuai Pan Guizhen Liao weizhou Li Yuezhou wei School of Resources Environment and MaterialsGuangxi UniversityNanning 530004China Key Laboratory of LCR Materials and Devices of Yunnan Province National Center for International Research On Photoelectric and Energy MaterialsSchool of Materials and EnergyYunnan UniversityKunming 650091China

In this study, the Al-5.10Cu-0.65 Mg alloys without and with 0.2 wt% Sc addition were prepared to unveil the effect of Sc on the precipitate behavior and properties by atomic-scale scanning transmission electron microscopy. The results show that addition of Sc is able to significantly suppress the formation of the peak-hardening θ’ and S precipitates but in favor of stabilizing Guinier–Preston–Bagaryatsky(GPB) zones during isothermal aging at 180 ℃. The generation of unique GPB precursors dictating the evolution of the subsequent peak-hardening GPB zones is highly correlated with the insufficient vacancies and dragging effect of Sc to Cu in the Al-Cu-Mg-Sc alloy, thereby restricting the nucleation of θ′ and S precipitates owing to the decreased available Cu solutes. In property, 0.2 wt% Sc addition can not only enhance the corrosion resistance but also the electrical conductivity of the peak-hardening alloy. In addition, the peak-hardening Al-Cu-Mg-Sc alloy is also featured with increased strength without losing the ductility compared to its solid solution state. Further analyses indicate that the improved properties are essentially attributed to the formation of densely distributed strain-free GPB zones and smaller precipitate-free zones. The obtained results could provide a potential design strategy of high-performance alloys by Sc addition.

关键词： Al alloy Micro-alloying Precipitation Atomistic mechanism Transmission electron microscopy

Role of circular RNAs in gastric cancer: Recent advances and prospects

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World Journal of Gastrointestinal Oncology 2019年第6期11卷 459-469页

作者： Ke-wei wang Ming Dong Department of Gastrointestinal Surgery the First Affiliated Hospital of China Medical University

Circular RNA(circRNA)is a newly discovered non-coding RNA with special structure,which is widely expressed in eukaryotic organisms and mainly located in the *** participate in gene regulation by working as miRNA sponges that block the inhibitory effect of miRNA on its target *** addition,circRNAs can bind to RNA binding proteins to regulate gene *** on characteristics of stability,expression specificity and participation in gene regulation,circRNAs are expected to be biomarkers for early diagnosis of cancer or potential targets for cancer *** the help of bioinformatics analysis,circRNA microarray analysis and high-throughput sequencing technology,more circRNAs were discovered to participate in the progression of gastric cancer(GC)over the past three *** article gives an overview of these recent research focusing on the roles of circRNAs in GC and highlights the advances.

关键词： Circular RNA Gastric cancer Biomarker Therapeutic target Prognosis

Improvement of the Compressive Strength of Carbon Fiber/Epoxy Composites via Microwave Curing

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Journal of Materials Science & Technology 2016年第3期32卷 226-232页

作者： Xuehong Xu Xiaoqun wang Qun Cai Xu wang Ran wei Shanyi Du School of Materials Science and Engineering Beihang University Shanghai Aircraft Manufacturing Co. Ltd.

Microwave processing was used to cure the carbon fiber/epoxy composites and designed for improving the compressive strength of the materials. By controlling the power of microwave heating, vacuum bagged laminates were fabricated under one atmosphere pressure without arcing. The physical and mechanical properties of composites produced through vacuum bagging using microwave and thermal curing were compared and the multistep （2-step or 3-step） microwave curing process for improved compressive properties was established. The results indicated that microwave cured samples had somewhat differentiated molecular structure and showed slightly higher glass transition temperature. The 2-step process was found to be more conducive to the enhancement of the compressive strength than the 3-step process. A 39% cure cycle time reduction and a 22% compressive strength increment were achieved for the composites manufactured with microwave radiation. The improvement in specific compressive strength was attributed to better interracial bonding between resin matrix and the fibers, which was also demonstrated via scanning electron microscopy analysis.

关键词： Carbon fiber Epoxy Microwave curing Compressive properties

Effects of Lu^(3+ )Doping on Optical Properties and Laser Performances of NYAB Crystal

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Chinese Physics Letters 1996年第8期13卷 602-605页

作者： PAN Heng-fu wang Pu FAN Xiao-feng wang Rui-hua LU Bao-sheng Institute of Crystal Materials Shandong University Jinan 250100

Volume compensation(VC)achieved in(Lu,Nd):YAl_(3)(BO_(3))_(4)(YAB)crystal codoped with Lu^(3+)and Nd^(3+)ions is *** lattice parameters,spectral properties and laser performances of the VC(Lu,Nd):YAB and single-doped Nd:YAB(NYAB)crystals are measured and *** results indicate that the laser performances of NYAB crystal can be greatly improved by the VC doping.

关键词： NYAB Nd laser

Numerical simulation of tritium behavior under a postulated accident condition for CFETR TEP system

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Nuclear Science and Techniques 2023年第7期34卷 206-218页

作者： Hai-Xia wang Xue-wei Fu wei-Ping Liu Tao-Sheng Li Jie Yu Institute of Nuclear Energy Safety Technology Hefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China

China Fusion Engineering Test Reactor(CFETR)is China's self-designed and ongoing next-generation fusion reactor *** confinement systems in CFETR guarantee that the radiation level remains below the safety limit during tritium handling and operation in the fuel cycle *** tritium technology team is responsible for studying tritium transport behavior in the CFETR tritium safety confinement systems of the National Key R&D Program of China launched in 2017,and we are conducting CFETR tritium plant safety analysis by using CFD *** this paper,the tritium migration and removal behavior were studied under a postulated accident condition for the Tokamak Exhaust Processing system of *** quantitative results of the transport behavior of tritium in the process room and glove box during the whole accident sequence(e.g.,tritium release,alarm,isolation,and tritium removal)have been *** results support the detailed design and engineering demonstration-related research of CFETR tritium plant.

关键词： China Fusion Engineering Test Reactor(CFETR) Tokamak Exhaust Processing(TEP)system Numerical simulation Tritium transport behavior Tritium confinement system Accident condition

A signal-amplified whole-cell biosensor for sensitive detection of Hg^2+ based on Hg^2+-enhanced reporter module

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Journal of Environmental Sciences 2020年第10期32卷 93-98页

作者： Dan wang Yanan Zheng Liudan wei Na wei Xiaosu Fan Shan huang Qi Xiao College of Chemistry and Materials Guangxi Key Laboratory of Natural Polymer Chemistry and PhysicsNanring Normal UniversityNanning 530001China Experimental Center of College of Agriculture Guangxi UniversityNanning 530005China

A signal-amplified mercury sensing biosensor with desired sensitivity was developed through firstly using the GFP mutant with fluorescence increasing response towards Hg^2+ as the reporter *** developed biosensor showed response for Hg^2+ in a relatively wide range of 1–10,000 nmol/L,and the detection limit was improved one or two orders of magnitude in comparison with most metal-sensing biosensors in similar *** addition,the biosensor could distinguish Hg^2+ easily from multiple metal ions and displayed strong adaptability to extensive p H conditions (pH 4.0–10.0).More importantly,the developed biosensor was able to provide an initial assessment of Hg^2+ spiked in the environmental water with the recoveries between 85.70%and 112.50%.The signal-amplified strategy performed by the modified reporter module will be widely applicable to many other wholecell biosensors,meeting the practical requirements with sufficient sensing performance.

关键词： Mercury sensing biosensor Signal-amplified Reporter module Environmental samples monitoring