检索结果-内蒙古大学图书馆

Dynamic relaxation process of a 3D super crystal structure in a Cu:KTN crystal

Chinese Optics Letters 2020年第2期18卷 61-65页

作者： Quanxin Yang Xin Zhang Hongliang Liu Xuping Wang Yingying Ren Shan He Xiaojin Li Pengfei Wu Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology Institute of Modern OpticsNankai UniversityTianjin 300071China Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices Hubei University of Arts and ScienceXiangyang 441053China Advanced Materials Institute Qilu University of Technology(Shandong Academy of Sciences)Jinan 250014China Shandong Provincial Engineering and Technical Center of Light Manipulations&Shandong Provincial Key Laboratory of Optics and Photonic Device School of Physics and ElectronicsShandong Normal UniversityJinan 250358China

In this Letter,we report the existence and relaxation properties of a critical phenomenon on called a 3D super crystal that emerges at T=TC?3.5℃,that is,in the proximity of the Curie temperature of a Cu:KTN *** dynamics processes of a 3D super crystal manifest in its formation containing polarized nanometric regions and/or polarized ***,with strong coupling and interaction of microcomponents,the characteristic relaxation time measured by dynamic light scattering demonstrates a fully new relaxation mechanism with a much longer relaxation *** the relaxation mechanism of a relaxator is so-far undetermined,this research provides a novel *** results can help structure a fundamental theory of ferroelectric relaxation.

关键词： KTN relaxation time dynamic light scattering micronano structure

来源：评论

学校读者我要写书评

暂无评论

Development and application of nanogenerators in humanoid robotics

Nano Trends

引用

Nano Trends 2023年 3卷

作者： Xuecheng Qu Ze Yang Jia Cheng Zhou Li Linhong Ji State Key Laboratory of Tribology in Advanced Equipment Department of Mechanical Engineering Tsinghua University Beijing 100084 China CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-nano Energy and Sensor Beijing Institute of Nonenergy and Nanosystems Chinese Academy of Sciences Beijing 101400 China School of Nanoscience and Technology University of Chinese Academy of Sciences Beijing 100049 China

Nanogenerators have garnered significant attention in the field of robotics due to their high performance, ease of design and fabrication, and lightweight nature. By utilizing such sensing systems, machines can be endowed with specific sentience capabilities. Moreover, sensors that based on nanogenerators can operate continuously without requiring an external power source. The following paper presents a comprehensive review of recent developments and applications of nanogenerator-based sensors in robotics in recent years. These sensors are categorized according to their sensory functions (including tactile, hearing, smell, vision and displacement, etc.), with a focus on their working mechanisms, materials and structures. Furthermore, this review investigates the usage of these devices in flexible manipulators and human-machine interfaces. Finally, the challenges and opportunities pertaining to nanogenerator-based sensors are discussed.

关键词： Nanogenerator Humanoid sensor Robotics Soft finger Human-machine interaction

来源：评论

学校读者我要写书评

暂无评论

A comparative study of sio2:Tio2 composite and sio2 film by sol-gel method for solar cell application 19th

A comparative study of sio2:Tio2 composite and sio2 film by ...

引用

19th International Workshop on Physics of Semiconductor Devices, IWPSD 2017

作者： Chatterjee, Kausturi Ray, Soma Pal, Baishakhi Adhikary, Kalyan Gangopadhyay, Utpal Mandal, Ratan Centre of Advanced Research in Renewable Energy and Sensor Technology MSIT TIG KolkataWest Bengal700150 India Centre of Excellence for Green Energy and Sensor System IIEST Shibpur HowrahWest Bengal711103 India Department of Physics Jadavpur University KolkataW.B700032 India School of Energy Studies Jadavpur University KolkataW.B700032 India

ISBN: (纸本)9783319976037

Thin films of SiO2 and SiO2–TiO2 composite sol were spin coated on textured monocrystalline silicon wafer and clean glass using Tetraethyl orthosilicate (TEOS) and Titanium tetraisopropoxide (TTIP) as main precursors. For further improvement of the films quality, DMF (dimethylformamide) was added into the solutions to reduce the cracks of the film. The average reflectance of the composite and oxide films was 8.8 and 6.81%, whereas textured monocrystalline silicon (without any coating) wafer having a reflectance of 13.20%. Both the films were annealed at different temperatures ranging from 400 to 900 °C with an interval of 100 °C. After annealing minority carrier lifetime significantly changes from 3.26 to 40.5 µs at 800 °C for oxide film and for composite it was 3.51–45.29 µs at 800 °C. These results show that both the films can be used as an ARC (anti-reflection coating) as well as a passivation layer for solar cell application. © Springer Nature Switzerland AG 2019.

关键词： Silica

来源：评论

学校读者我要写书评

暂无评论

Validation of the Effectiveness of Near-Infrared Spectroscopy for Detecting Impurities in Milk Powder using ANN and SVM

引用

Journal of Physics: Conference Series 2021年第1期2107卷

作者： Fathinul Syahir A.S S.N. Basah H Yazid M.J. Aziz Safar M.K. Ali Hassan Faculty of Electrical Engineering Technology Centre of Excellence for Advanced Sensor Technology (CEASTech) Universiti Malaysia Perlis 02600 Arau Perlis Malaysia Medical Device and Life Sciences Sport Engineering Research Centre (SERC) Faculty of Electronic Engineering Technology

Nowadays, there are so many productions on the market that based on dairy product that include milk powder. The milk powder has different categories which is for children, adult and others. The milk powder involves the local product until the import product. The transparency of the content in the milk powder cannot be identified easily and can cause food poisoning to be happened. Hence, with the use of near-infrared spectroscopy, NIRS it can be use easily to detect the content in the food simply. There are many methods in NIRS which is reflectance and absorbance. This method being uses to detect which milk powder is adulterated. Ocean Optic XR-1 ES, USA device and Ocean View software have been used in this project to take data from the sample. The device use wavelength between 200nm-1025nm. The milk powder obtained from the supermarket and nearby stores. Data that have been taken then transferred into suitable table and will go through two different analysis method which is SVM and ANN. The reflection method is not suitable to detect the adulterated milk powder. From the result ANN shows the higher accuracy to classify the pure and Adulterant milk powder.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Fabrication of quartz crystal microbalance with pegylated lipopolymer for detection of non-invasive lung cancer biomarker

引用

Materials Today: Proceedings 2019年 7卷 632-637页

作者： Nur Athirah Awatif Abdul Rahman Akmal Hadi Ma'Radzi Ammar Zakaria School of Bioprocess Engineering Universiti Malaysia Perlis Arau 02600 Perlis Malaysia Centre of Excellent for Advanced Sensor Technology Universiti Malaysia Perlis Arau 02600 Perlis Malaysia

This study presents a fabrication of quartz crystal microbalance (QCM) with pegylated lipopolymer for detection of non-invasive lung cancer biomarkers. The selected biomarkers for this study were propanol, ethyl benzene, hexanal and decane. QCM with fundamental frequency 30 MHz AT-cut gold electrodes were coated with lipid and pegylated lipopolymer with a terminated functional group of carboxyl and succinyl to increase sensor responsiveness towards detection purposes. The fabricated sensors could detect all biomarkers with various selectivity and sensitivity responses. Furthermore, the results from biomarker exposure indicated that the sensitivity of sensors coated with succinyl, and carboxyl lipopolymer film were better than in detection toward propanol and hexanal, while lipid was best in detection towards ethyl benzene and decane

关键词： Pegylated lipopolymer quartz crystal microbalance lung cancer biomarker volatile organic compound

来源：评论

学校读者我要写书评

暂无评论

Mobile Robot Based Simultaneous Localization and Mapping in UniMAP's Unknown Environment

Mobile Robot Based Simultaneous Localization and Mapping in ...

引用

2018 International Conference on Computational Approach in Smart Systems Design and Applications, ICASSDA 2018

作者： Syaqur, Wan Abdul Ali Yeon, Ahmad Shakaff Abdullah, Abu Hassan Kamarudin, Kamarulzaman Visvanathan, Retnam Ismail, Abdul Halim Mamduh, Syed Muhammad Zakaria, Ammar Universiti Malaysia Perlis Center of Excellence for Advanced Sensor Technology School of Mechatronic Engineering M-Arau Malaysia

ISBN: (纸本)9781538683699

Mapping is one of the most important aspect in robot navigation. This project emphasizes on the mapping using Simultaneous Localization and Mapping (SLAM) using GMapping approach. Turtlebot equipped with Hokuyo Laser Range Finder (LRF) URG-04LX-UG01 is used for the mapping. The SLAM operations were done in there different locations in UniMAP, which are either indoor or mixed of indoor-outdoor environment. The results show that the indoor maps obtained are more accurate than the outdoor map. This is due to the laser scanner unable to produce accurate scan measurement in outdoor environment and therefore result in scan matching problems. © 2018 IEEE.

关键词： Mapping

来源：评论

学校读者我要写书评

暂无评论

Impact of guest metals interaction on the electrochemical behavior of La-TMA for selective and sensitive detection of heavy metal Ions: Surface adsorptive reaction mechanism

引用

Microchemical Journal 2025年 215卷

作者： Shubham S. Patil Vijaykiran N. Narwade Farhat U. Shaikh Rajendra S. Sonkawade Meng-Lin Tsai Tibor Hianik Mahendra D. Shirsat RUSA-Center for Advanced Sensor Technology Department of Physics Dr. Babasaheb Ambedkar Marathwada University Chhatrapati Sambhajinagar (Aurangabad) (MS) 431 004 India Department of Electronics Dr Babasaheb Ambedkar Marathwada University Chhatrapati Sambhajinagar (Aurangabad) (MS) 431 004 India Department of Physics Shivaji University Kolhapur (MS) 16004 India Department of Materials Science and Engineering National Taiwan University of Science and Technology Taipei 10607 Taiwan Department of Nuclear Physics and Biophysics Faculty of Mathematics Physics and Informatics Comenius University 842 48 Bratislava Slovak Republic

Host-guest chemistry of MOFs and metal sites is a major factor in the electrochemical sensing area. Formulated work deals with the study of guest metals (Ag, Cu, Fe, and Co) interactions with Lanthanum-based MOF (La-TMA) and their effect on the electrochemical detection of heavy metal ions (HMI). Hydrothermally Synthesised La-TMA characterized with structural, morphological, spectroscopic & electrochemical characterizations and modified with metal sites (Ag, Fe, Cu, and Co) for electrochemical sensing utility. Change of phase after modification of La-TMA with metal sites observed in X-ray diffraction and scanning electron microscopic results. Impressive selectivity, sensitivity, and limit of detection (LOD) i.e., 0.7 nM, were observed for Hg 2+ only after modification of La-TMA with Ag metal sites. Along with laboratory-scale results, Ag/La-TMA’s electrochemical sensing response towards pesticide and fruit samples was captured to examine the occurrence of Hg 2+ in the main parts of the food chain. Significant traces of Hg 2+ were observed in these biosamples. The reaction mechanism was proposed by surface interaction studies of Ag/La-TMA after Hg 2+ accumulation using X-ray Photoelectron Spectroscopic analysis. Obtaining electrochemical responses will play a vital role in fast health monitoring systems in the upcoming years.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Surface Temperature Distribution of Aluminum Fins Heated using Thermoelectric

引用

Journal of Physics: Conference Series 2021年第1期2013卷

作者： A O Triqadafi T N Zafirah F J Kusuma S P Sakti Sensor Technology Laboratory Department of Physics Brawijaya University Jl. Veteran Malang 65145 Indonesia Collaborative Research Centre for Advanced Systems and Material Technology Brawijaya University Jl. Veteran Malang 65145 Indonesia

The thermoelectric device has advantages for heating and cooling element. The thermoelectric can be used easily as a heater. In applications for small volumes, the temperature distribution of the heating element is necessary to ensure that different samples at different locations receive the same heat treatment. This experiment shows an aluminum fin's temperature distribution heated using different heat amount. TEC-12706 was used to heat an aluminum fin with a dimension of 40×40×20 mm. The aluminum was placed in an chamber made using a 3D printer with a material of ABS. The surface temperature distribution of the aluminum fin was measured using a thermal camera Fluke-Ti20S. The measurement data showed that the fin's surface temperature is not the same at all points at the surface, especially the center and the edge. During the heating process, the temperature at the aluminum fin's center has a higher temperature than the fin's edge. The lower the duty cycle used, the better the temperature distribution on the heatsink. For 50% duty cycle or more, the temperature variation in the middle with a square dimension of 20×20 mm has a temperature variation of less than 1°C. Therefore, if the temperature distribution between points is important, it is recommended to use an aluminum fin around the center.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Corrigendum to “Organic molecule-modified copper catalyst enables efficient electrochemical reduction of CO2-to-methane” [J. Electroanal. Chem. 929 (2023) 117068]

引用

Journal of Electroanalytical Chemistry 2023年 932卷

作者： Min Wang Zhancheng Zhang Tanju Yildirim Libei Feng Linglong Zhang Jue Wang Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province/School of Materials Science and Engineering Yancheng Institute of Technology Yancheng 224051 China College of Engineering and Applied Science Nanjing University Nanjing 210093 China Center for Functional Sensor & Actuator (CFSN) National Institute for Materials Science (NIMS) Tsukuba Ibaraki 305-0044 Japan College of Physics Nanjing University of Aeronautics and Astronautics Key Laboratory of Aerospace Information Materials and Physics (NUAA) MIIT Nanjing 211106 China

来源：评论

学校读者我要写书评

暂无评论

Low-Cost Germicidal UV LED as Candidate Light Source for Portable and Field Spectrometer

引用

Journal of Physics: Conference Series 2021年第1期1951卷

作者： S P Sakti D Anggraeni T Putro Sensor Technology Laboratory Department of Physics Brawijaya University Jl. Veteran Malang 65145 Indonesia Collaborative Research Centre for Advanced Systems and Material Technology Brawijaya University Jl. Veteran Malang 65145 Indonesia

Ultraviolet Light Emitting Diode (UV LED) is becoming popular, especially during the Covid-19 pandemic. UV LED has a specific wavelength with relatively narrow bandwidth, especially the one that has a shorter wavelength. On the other hand, UV LED has advantages in its low power consumption, compact size, and longer lifetime. This work shows that a wider bandwidth can be elicited by combining multiple UV LED sources. We have measured several low-cost UV LED, which is used as a germicidal lamp using a portable spectrometer that can detect a wavelength from 200 nm to 850 nm. The combined UV LED spectrum light ranges from 254 nm UVC to 400 nm UVA. The light spectrum produced by the LED shows a form of the Gaussian distribution model. Some LEDs have a peak wavelength at UVC around 270nm, and LEDs have a peak wavelength around 400nm at UVA. We can conclude that the low-cost UV LED can be used as a light source for portable or field spectrometers for specific wavelength.

关键词：

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：