检索结果-内蒙古大学图书馆

Ultra-sensitive fluorescence-activated droplet single-cell sorting based on Tetramer-HCR-EvaGreen amplification

Microsystems & Nanoengineering 2025年第1期11卷 197-209页

作者： Long Chen Yi Xu Lele Zhou Ding Ma Rong Zhang Yifan Liu Xianqiang Mi Shanghai Institute of Microsystem and Information Technology Chinese Academy of SciencesShanghai 200050China Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai 201210China University of Chinese Academy of Sciences Beijing 100049China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China Shanghai Clinical Research and Trial Center Shanghai 201210China State Key Laboratory of Advanced Medical Materials and Devices ShanghaiTech UniversityShanghai 201210China School of Physics and Optoelectronic Engineering Hangzhou Institute for Advanced Study University of Chinese Academy of SciencesChinese Academy of SciencesHangzhou 310024China

The current single-cell analysis technologies such as fluorescence-activated cell sorting(FACS)and fluorescence-activated droplet sorting(FADS)could decipher the cellular heterogeneity but were constrained by low sorting performance and cell ***,an ultra-sensitive single-cell sorting platform has been developed by integrating the FADS technology with Tetramer-HCR-EvaGreen(THE)fluorescence signal *** THE system produced much higher fluorescence signal than that of the single Tetramer or Tetramer-HCR signal *** application to target MCF-7 cells,the platform exhibited high efficacy and selectivity while maintaining more than 95%cell *** THE-FADS achieved sorting efficiencies of 55.5%and 50.3%with purities of 91%and 85%for MCF-7 cells in PBS solutions and simulated serum samples,*** sorted MCF-7 cells showed similar proliferation together with CK19 and EGFR mRNA expression compared with the control *** established THE-FADS showed the promising prospects to cellular heterogeneity understanding and personalized medicine.

关键词： fluorescence signal amplification personalized medicine single cell sorting decipher cellular heterogeneity cellular heterogeneity ultra sensitive fluorescence activated droplet sorting cell viability tetramer hcr evagreen amplification

来源：评论

学校读者我要写书评

暂无评论

Adjusting *CO adsorption configuration over tandem trimetallic AuAgCu heterojunction boosts CO_(2) electroreduction to ethanol via asymmetric C–C coupling

引用

science China Materials 2025年第1期68卷 173-179页

作者： Yongxia Shi Junjun Li Zhiwen Min Xinyi Wang Man Hou Hao Ma Zechao Zhuang Yuchen Qin Yuanmiao Sun Dingsheng Wang Zhicheng Zhang Key Laboratory of Organic Integrated Circuit Ministry of Education&Tianjin Key Laboratory of Molecular Optoelectronic SciencesDepartment of ChemistrySchool of ScienceTianjin UniversityTianjin 300072China Faculty of Materials Science and Energy Engineering/Institute of Technology for Carbon Neutrality Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China Department of Chemistry Tsinghua UniversityBeijing 100084China College of Sciences Henan Agricultural UniversityZhengzhou 450000China

Rationally modulating the adsorption configuration of the key*CO intermediate could facilitate carbon±carbon(C±C)coupling to generate multi-carbon products in the electrochemical CO_(2) reduction *** this work,theoretical calculations reveal that C±C coupling via atopadsorbed*CHO and hollow-adsorbed*CO over Cu sites is an energetically favorable *** a proof of concept,a tandem trimetallic AuAgCu heterojunction(Au@Ag/Cu)was prepared,where the atop-adsorbed*CO over Au@Ag sites could migrate to Cu sites with hollow adsorption configuration,and then the asymmetric C±C coupling via transferred hollow-adsorbed*CO and existed atop-adsorbed*CHO over Cu sites facilitates the formation of the ethanol product,exhibiting a maximum Faraday efficiency of 65.9%at a low potential of−0.3 V *** hydrogen *** work provides new insights into the intrinsic understanding of tandem catalysis by regulating adsorption configuration of the intermediate products.

关键词： CO_(2)electroreduction C–C coupling tandem catalysis adsorption configuration ethanol

来源：评论

学校读者我要写书评

暂无评论

Investigation variable star classification through light curve analysis using machine learning approach

Investigation variable star classification through light cur...

引用

2024 International Conference on Photonics Solutions, ICPS 2024

作者： Tongleak, Chutipon Thongsuwan, Setthanun Srithongtae, Kewalee Kitrattana, Borirak Tanirat, Purin Channumsin, Sittiporn Buranasiri, Prathan Artificial Intelligence Photonics Advanced Research Laboratory Department of Physics School of Science King Mongkut's Institute of Technology Thailand Electronic and Optoelectronic Device Research Unit School of Science King Mongkut's Institute of Technology Ladkrabang Thailand Department of Information Technology Sriracha Faculty of Science Kasetsart University Sriracha Campus Thailand Thailand

ISBN: (数字)9781510688308

ISBN: (纸本)9781510688292

With the development of space technology, wide-field sky surveys using telescopes have expanded the range of new data available for time-domain astronomical research. Traditional data analysis methods can no longer respond quickly and accurately enough to the growing volume of data. Thus, classifying time-series data, such as light curves, has become a significant challenge in the era of big data. In modern times, analyzing light curves has become essential for using machine learning techniques to handle and filter through massive amounts of data. Machine learning algorithms can be divided into two categories: shallow learning and deep learning. Numerous researchers have proposed and developed a variety of algorithms for light curve classification. In this study, we experimented with Support Vector Machine (SVM) and XGBoost, which are shallow machine learning algorithms, as well as 1D-CNN and Long Short-Term Memory (LSTM), which are deep learning algorithms, which are branches of deep machine learning, to classify variable stars. The training and testing data used in this study were from the Optical Gravitational Lensing Experiment-III (OGLE-III), consisting of variable star data from the Large Magellanic Cloud (LMC), categorized into five main classes: Classical Cepheids, δ Scutis, eclipsing binaries, RR Lyrae stars, and Long-period variables. The results demonstrate the performance analysis of each machine learning algorithm type applied to light curve data, while also highlighting the accuracy and statistical metrics of the algorithms used in the experiments. © 2025 SPIE.

关键词： Contrastive Learning

来源：评论

学校读者我要写书评

暂无评论

DWT-Net: A Medical Image Segmentation Model Incorporating Frequency Domain Information 4

DWT-Net: A Medical Image Segmentation Model Incorporating Fr...

引用

4th International Conference on Communication technology and Information technology, ICCTIT 2024

作者： Chen, Lixian Wu, Xueyan Ma, Jiayi Li, Shichu Shi, Yang Huang, Mingxuan Guangdong University of Technology School of Management Guangzhou China Shenzhen University College of Physics and Optoelectronic Engineering Shenzhen China Guangdong University of Technology School of Computer Science and Technology Guangzhou China Sun Yat-sen University Zhongshan School of Medicine Guangzhou China

ISBN: (纸本)9798331528973

Numerous medical image segmentation frameworks have been proposed by researchers;however, the incorporation of frequency domain information has been largely overlooked in previous studies. By incorporating frequency information, we avoid the issue where traditional downsampling reduces computational load and communication bandwidth but also removes redundant and important information, leading to accuracy loss. This paper introduces a novel supervised convolutional neural network architecture, termed "DWT-Net,"which incorporates discrete wavelet convolution and a custom residual downsampling mechanism. Through wavelet transformation, the model not only achieves a near-global receptive field but also significantly enhances its responsiveness to low-frequency information. To bolster the model's performance, data augmentation techniques were employed to enrich the dataset. Our model has been applied to the public datasets Kvasir-SEG and CVCClinicDB. Compared to other frameworks, it has shown significant improvements in display, achieving the state-of-the-art accuracy. © 2024 IEEE.

关键词： Discrete wavelet transforms

来源：评论

学校读者我要写书评

暂无评论

Memristive feature and mechanism induced by laser-doping in defect-free 2D semiconductor materials

引用

Journal of Semiconductors 2024年第7期45卷 85-91页

作者： Xiaoshan Du Shu Wang Qiaoxuan Zhang Shengyao Chen Fengyou Yang Zhenzhou Liu Zhengwei Fan Lijun Ma Lei Wang Lena Du Zhongchang Wang Cong Wang Bing Chen Qian Liu College of Electronic and Information Engineering Shandong University of Science and TechnologyQingdao 266590China National Center for Nanoscience and Technology&University of Chinese Academy of Sciences Beijing 100190China Hebei University of Water Resources and Electric Engineering Electrical Automation Department Cangzhou 061001China The MOE Key Laboratory of Weak-Light Nonlinear Photonics and International Sino-Slovenian Join Re-search Center on Liquid Crystal Pho-tonics TEDA Institute of Applied Physics and School of PhysicsNankai UniversityTianjin 300457China College of Mathematics and Physics Shandong Advanced Optoelectronic Materials and Technologies Engineering LaboratoryQingdao Uni-versity of Science and TechnologyQingdao 266061China Department of Physics Capital Normal UniversityBeijing 100048China Department of Advanced Materials and Computing International Iberian Nanotechnology Laboratory(INL)4715-330 BragaPortugal College of Mathematics and Physics Beijing University of Chemical TechnologyBeijing 100029China

Memristors as non-volatile memory devices have gained numerous attentions owing to their advantages in storage,in-memory computing, synaptic applications, etc. In recent years, two-dimensional(2D) materials with moderate defects have been discovered to exist memristive feature. However, it is very difficult to obtain moderate defect degree in 2D materials, and studied on modulation means and mechanism becomes urgent and essential. In this work, we realized memristive feature with a bipolar switching and a configurable on/off ratio in a two-terminal MoS_(2) device(on/off ratio ~100), for the first time, from absent to present using laser-modulation to few-layer defect-free MoS_(2)(about 10 layers), and its retention time in both high resistance state and low resistance state can reach 2×10^(4) s. The mechanism of the laser-induced memristive feature has been cleared by dynamic Monte Carlo simulations and first-principles calculations. Furthermore, we verified the universality of the laser-modulation by investigating other 2D materials of TMDs. Our work will open a route to modulate and optimize the performance of 2D semiconductor memristive devices.

关键词： 2D-material memristor laser doping laser direct writing memristive mechanism

来源：评论

学校读者我要写书评

暂无评论

Time-energy distribution of photoelectron from atomic states with different magnetic quantum numbers in elliptically polarized laser fields

引用

Chinese physics B 2024年第9期33卷 374-382页

作者： Jingyang Xu Li Guo Xin Qi Ronghua Lu Min Zhang Jingtao Zhang Jing Chen Department of Physics Shanghai Normal UniversityShanghai 200234China Key Laboratory for Quantum Optics and Center for Cold Atom Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China Hefei National Research Center for Physical Sciences at the Microscale and School of Physical Sciences University of Science and Technology of ChinaHefei 230026China Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology College of Engineering PhysicsShenzhen Technology UniversityShenzhen 518118China

A Wigner-distribution-like(WDL)function based on the strong-field approximation(SFA)theory is used to investigate the ionization time of the photoelectron emitted from the initial states with different magnetic quantum number m in elliptically polarized electric *** saddle-point method is adopted for *** different m states,a discrepancy exists in the WDL distributions of the photoelectrons emitted in a direction close to the major axis of the laser field *** on the saddle-point analysis,this discrepancy can be ascribed to the interference between electrons ionized from two tunneling *** results show that the relationships between the tunneling instants and kinetic energy of photoelectrons are the same for different m initial states when the Coulomb potential is not *** work sheds some light on the ionization-time information of electrons from different magnetic quantum states.

关键词： strong-field ionization Wigner-distribution-like ionization instant

来源：评论

学校读者我要写书评

暂无评论

Active tunable terahertz bandwidth absorber based on single layer graphene

引用

Communications in Theoretical physics 2023年第4期75卷 106-113页

作者： Wenxin Li Yingting Yi Hua Yang Shubo Cheng Wenxing Yang Huafeng Zhang Zao Yi Yougen Yi Hailiang Li School of Physics and Optoelectronic Engineering Yangtze UniversityJingzhou 434023China College of Physics and Electronics Central South UniversityChangsha 410083China School of Science Lanzhou University of TechnologyLanzhou 730050China Joint Laboratory for Extreme Conditions Matter Properties Southwest University of Science and TechnologyMianyang 621010China Key Laboratory of Microelectronic Devices&Integrated Technology Institute of MicroelectronicsChinese Academy of SciencesBeijing 100029China

In this paper,an active tunable terahertz bandwidth absorber based on single-layer graphene is proposed,which consists of a graphene layer,a photo crystal plate,and a gold *** the Fermi energy(Ef)of graphene is 1.5 eV,the absorber shows high absorption in the range of 3.7 THz–8 THz,and the total absorption rate is 96.8%.By exploring the absorption mechanism of the absorber,the absorber shows excellent physical *** absorber also shows good adjustability by changing the Efof *** means that the absorber exhibits excellent tunability by adjusting the physical parameters and Efof the ***,the absorber is polarization independent and insensitive to the incident *** fine characteristics of the absorber mean that the absorber has superior application value in many fields such as biotechnology and space exploration.

关键词： metamaterials active tunable bandwidth absorber terahertz graphene

来源：评论

学校读者我要写书评

暂无评论

High-performance flexible Sb_(2)Se_(3) thin-film photodetector for tunable color imaging and wearable physiological monitoring applications

引用

Nano Research 2025年第2期18卷 687-698页

作者： Shuo Chen Hong-Bo Li Yi Fu Guo-Qiang Liu Muhammad Ishaq Jun Luo Jian-Min Li Bo Che Jing-Ting Luo Liming Ding Tao Chen Guang-Xing Liang Shenzhen Key Laboratory of Advanced Thin Films and Applications Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceState Key Laboratory of Radio Frequency Heterogeneous IntegrationCollege of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China The Hospital of Shenzhen General Station of Exit and Entry Frontier Inspection Shenzhen 518024China Key Laboratory of Artificial Micro-and Nano-structures of Ministry of Education School of Physics and TechnologyWuhan UniversityWuhan 430072China Hefei National Research Center for Physical Sciences at Microscale CAS Key Laboratory of Materials for Energy ConversionDepartment of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026China Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190China

Antimony selenide(Sb_(2)Se_(3))has recently made considerable photovoltaic,advancements in photoelectrochemical,and photodetector research scenarios,owing to its advantageous material merits and superior optoelectronic *** contrast,the exploration of flexible Sb_(2)Se_(3) photoelectric devices are less attempted,though it possesses unique one-dimensional(1D)crystal structure to enable large deformation ***,we develop a flexible Sb2Ses thin-film photodetector on polyimide *** to the high-quality SbSes light absorber and benign interfaces at both back contact and heterojunction regions,the carrier dynamics are effectively *** leading flexible Sb_(2)Se_(3) photodetector showcases self-powered and broadband features,with exceptional responsivity of 0.51 A·W^(-1) and realistic detectivity up to 1.32×10^(13) Jones,ultra-fast response speed of 49 ns/351 ns of rise and decay times,and remarkable mechanical deformation stability,flourishing the high-level development for flexible Sb_(2)Se_(3) ***,a tunable single/dual-color flexible imaging system under band alignment modulation,along with a wearable and accurate heart rate/arterial blood oxygen saturation photoplethysmography detection system highlights the great application potential for flexible Sb,Ses photodetectors.

关键词： Sb_(2)Se_(3) flexible thin-film photodetector color imaging heart rate arterial blood oxygen saturation

来源：评论

学校读者我要写书评

暂无评论

Design and mechanism insight on SiC quantum dots sensitized inverse opal TiO_(2) with superior photocatalytic activities under sunlight

引用

Frontiers of Chemical science and Engineering 2023年第12期17卷 1913-1924页

作者： Yingchao He Qiong Sun Likun Sun Zhixing Gan Liyan Yu Lifeng Dong College of Materials Science and Engineering Qingdao University of Science and TechnologyQingdao 266042China Center for Future Optoelectronic Functional Materials School of Computer and Electronic InformationNanjing Normal UniversityNanjing 210023China Department of Physics Hamline UniversitySt.PaulMN 55104USA

The combination of SiC quantum dots sensitized inverse opal TiO_(2) photocatalyst is designed in this work and then applied in wastewater purification under simulated *** various spectroscopic techniques,it is found that electrons transfer directionally from SiC quantum dots to inverse opal TiO_(2),and the energy difference between their conduction/valence bands can reduce the recombination rate of photogenerated carriers and provide a pathway with low interfacial resistance for charge transfer inside the *** a result,a typical type-II mechanism is proved to dominate the photoinduced charge transfer ***,the composite achieves excellent photocatalytic performances(the highest apparent kinetic constant of 0.037 min^(-1)),which is 6.2 times(0.006 min^(-1))and 2.1 times(0.018 min^(-1))of the bare inverse opal TiO_(2) and commercial P25 ***,the stability and non-toxicity of SiC quantum dots sensitized inverse opal TiO_(2) composite enables it with great potential in practical photocatalytic applications.

关键词： inverse opal TiO_(2) silicon carbide quantum dots quantum dot sensitized photocatalyst type-II charge transfer route

来源：评论

学校读者我要写书评

暂无评论

Micro-LED Projection Display Resolution Enhancement System

Micro-LED Projection Display Resolution Enhancement System

引用

International Conference on Display technology, 2024

作者： Hao, Weijie Jin, Huajian Chen, Enguo Xu, Sheng Ye, Yun Guo, Tailiang School of Advanced Manufacturing Fuzhou University Fujian Quanzhou China College of Physics and Information Engineering Fuzhou University Fujian Fuzhou China Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China Fujian Fuzhou China

Self-luminous projection technologies, such as Micro- LED chips, compared with traditional projection methods, does not require complex lighting path. So it can significantly improve light utilization rate and reduce costs. However, technical challenges in Micro-LED chip production make it difficult to improve the chip's resolution further. Some studies have shown that compared with the original image resolution of the spatial light modulator (SLM), the projection images overlapped is an effective method to improve the resolution of the projector. In this paper, we study the working principle of the extended pixel resolution actuator and propose a self-luminous projection resolution enhancement system based on Micro-LED chip. It can improve the resolution of the projection images with the resolution of the Micro-LED chip unchanged. The resolution enhancement system consists of a Micro-LED chip, an extended pixel resolution actuator and a projection lens. According to the working principle of the extended pixel resolution actuator, the projection lens is an image-space telecentric structure, in which modulation transfer function of projection imaging at Nyquist frequency 100 lp/mm is greater than 0.4. Finally, the tolerance analysis on the projection lens is completed. The results show that the projection lens has a high success rate in processing. This work is of great significance for improving the resolution of Micro-LED self-luminous projection images. © 2024 John Wiley and Sons Inc. All rights reserved.

关键词： Actuators

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：