Calculating the electrical conductivity of graphene nanoplatelet polymer composites by a monte carlo method
作者：
Fang, Chao;Zhang, Juanjuan;Chen, Xiqu;Weng, George J.*
期刊：
Nanomaterials ,2020年10(6):1-15 ISSN：2079-4991
通讯作者：
Weng, George J.
作者机构：
[Fang, Chao; Chen, Xiqu] Wuhan Polytech Univ, Dept Elect & Elect Engn, Wuhan 430023, Peoples R China.;[Zhang, Juanjuan] Lanzhou Univ, Minist Educ China, Key Lab Mech Environm & Disaster Western China, Lanzhou 730000, Peoples R China.;[Zhang, Juanjuan] Lanzhou Univ, Coll Civil Engn & Mech, Dept Mech & Engn Sci, Lanzhou 730000, Peoples R China.;[Weng, George J.] Rutgers State Univ, Dept Mech & Aerosp Engn, New Brunswick, NJ 08903 USA.
通讯机构：
[Weng, George J.] R;Rutgers State Univ, Dept Mech & Aerosp Engn, New Brunswick, NJ 08903 USA.
关键词：
Monte Carlo simulations;electrical conductivity;graphene polymer nanocomposites
摘要：
Electrical conductivity is one of several outstanding features of graphene–polymer nanocomposites, but calculations of this property require the intricate features of the underlying conduction processes to be accounted for. To this end, a novel Monte Carlo method was developed. We first established a randomly distributed graphene nanoplatelet (GNP) network. Then, based on the tunneling effect, the contact conductance between the GNPs was calculated. Coated surfaces (CSs) were next set up to calculate the current flow from the GNPs to the polymer. Using the equipotential approximation, the potentials of the GNPs and CSs met Kirchhoff’s current law, and, based on Laplace equation, the potential of the CSs was obtained from the potential of the GNP by the walk-on-spheres (WoS) method. As such, the potentials of all GNPs were obtained, and the electrical conductivity of the GNP polymer composites was calculated. The barrier heights, polymer conductivity, diameter and thickness of the GNP determining the electrical conductivity of composites were studied in this model. The calculated conductivity and percolation threshold were shown to agree with experimental data. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.
语种：
英文
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基于残差卷积自编码器（RCAE）的红外图像降噪方法研究
作者：
张遥;陈西曲
期刊：
信息技术与信息化 ,2019年(12):242-244 ISSN：1672-9528
作者机构：
武汉轻工大学电气与电子工程学院 湖北武汉 430023;[张遥] 武汉轻工大学
关键词：
红外图像降噪;残差卷积自编码器;三维块匹配法
摘要：
针对红外图像存在较大噪声的现状,本文提出了一种基于卷积神经网络改进的残差卷积神经网络.该网络一共有9层,其中有3层卷积层,3层残差块,以及3层反卷积层.改进后的算法具有更加清晰的降噪图像,更有利于后期识别红外图像.本文从FLIR_ADAS红外图像数据集对经典卷积自编码器和残差卷积自编码器进行实验,结果表明残差卷积神经网络在红外图像上相对于卷积自编码器和三维块匹配法(BM3D)方法有更高的峰值信噪比(PSNR).
语种：
中文
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Microbolometric theoretical responsivity analysis for focal plane array under pulse current bias
作者：
Chen, Xiqu* ;Fang, Chao;Lv, Qiang
期刊：
Optik ,2019年177:21-25 ISSN：0030-4026
通讯作者：
Chen, Xiqu
作者机构：
[Fang, Chao; Lv, Qiang; Chen, Xiqu] Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan, Hubei, Peoples R China.
通讯机构：
[Chen, Xiqu] W;Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan, Hubei, Peoples R China.
关键词：
Bolometers;Focal plane arrays;Temperature sensors;High performance characteristics;Infrared responsivity;Infrared sensitivity;Microbolometer arrays;Operating temperature;Pulse currents;Responsivity;Thermal balance;Focusing
摘要：
Based on the physical thermal balance equation of the microbolometer under pulse current bias, the microbolometric theoretical infrared responsivity is given out in this paper. The operating temperature of the microbolometer during the pulse current bias period is theoretically discussed and analyzed, from which the microbolometric theoretical infrared responsivity expression is derived for high-speed microbolometric focal plane array. The microbolometric theoretical infrared responsivity expression reveals some key factors to decide the infrared sensitivity of the microbolometric focal plane array and has been successfully verified through an experimental microbolometric focal plane array. The microbolometric theoretical infrared responsivity expression is theoretically strict and can be utilized for future microbolometric focal plane arrays with some high-performance characteristics parameters such as high-speed and small-pixel. © 2018 Elsevier GmbH
语种：
英文
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Energy Consumption in Relay Underwater Acoustic Sensor Networks for NDN
作者：
Xing, Guanglin;Chen, Yumeng;He, Liuting;Su, Wanyan;Hou, Rui* ;...
期刊：
IEEE ACCESS ,2019年7:42694-42702 ISSN：2169-3536
通讯作者：
Hou, Rui
作者机构：
[Xing, Guanglin; He, Liuting; Li, Wei; Chen, Yumeng; Su, Wanyan; Hou, Rui] South Cent Univ Nationalities, Coll Comp Sci, Wuhan 430074, Hubei, Peoples R China.;[Zhang, Chengjun] Wuhan Text Univ, Coll Mech Engn & Automat, Wuhan 430070, Hubei, Peoples R China.;[Chen, Xiqu] Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Hou, Rui] S;South Cent Univ Nationalities, Coll Comp Sci, Wuhan 430074, Hubei, Peoples R China.
关键词：
Energy consumption;named data networking;underwater acoustic sensor networks
摘要：
In recent years, a typical representation of the next-generation Internet architecture, named data networking (NDN), and a critical form of the underwater Internet of Things (IoT), underwater acoustic sensor networks (UASNs), have attracted widespread attention in academia. Meanwhile, since the battery energy of the sensor node is limited and the battery is difficult to replace or recharge in underwater environments, extending the networks' lifetime has become a key issue in UASNs. In this paper, we try to deploy a UASN on NDN architecture and explore the energy consumption of the NDN-based UASN under shallow water and deep water conditions based on the relay network topology. A simulation is carried out to compare the delay performance of NDN-based and IP-based UASNs and validate the result. It is believed that the study could provide a theoretical criterion for the selection of the direct or relay path to optimize energy consumption in the future deployment of NDN-based UASNs.
语种：
英文
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A Monte Carlo model with equipotential approximation and tunneling resistance for the electrical conductivity of carbon nanotube polymer composites
作者：
Fang, Chao;Zhang, Juanjuan;Chen, Xiqu;Weng, George J.*
期刊：
Carbon ,2019年146:125-138 ISSN：0008-6223
通讯作者：
Weng, George J.
作者机构：
[Fang, Chao; Chen, Xiqu] Wuhan Polytech Univ, Dept Elect & Elect Engn, Wuhan 430023, Hubei, Peoples R China.;[Zhang, Juanjuan] Lanzhou Univ, Minist Educ China, Key Lab Mech Environm & Disaster Western China, Lanzhou, Gansu, Peoples R China.;[Zhang, Juanjuan] Lanzhou Univ, Coll Civil Engn & Mech, Dept Mech & Engn Sci, Lanzhou 730000, Gansu, Peoples R China.;[Fang, Chao; Weng, George J.; Zhang, Juanjuan] Rutgers State Univ, Dept Mech & Aerosp Engn, New Brunswick, NJ 08903 USA.
通讯机构：
[Weng, George J.] R;Rutgers State Univ, Dept Mech & Aerosp Engn, New Brunswick, NJ 08903 USA.
关键词：
Carbon nanotubes;Electrical properties;Equipotential approximation;Nanocomposites;Tunneling;Walk-on-spheres
摘要：
A Monte Carlo model with equipotential approximation and tunneling resistance is developed to predict the percolation threshold and electrical conductivity of carbon nanotube (CNT) polymer nanocomposites. We first establish a random CNT network, and then calculate their intrinsic and contact conductance. To provide a pathway for the current to flow from CNT to polymer, a thin coated surface (CS) is introduced. The CNTs, CS, and the two electrodes then constitute the three major components of the conduction process. To solve this problem, we develop the method of equipotential approximation to determine the electrical potentials of CNTs and CS, and further determine their coefficient matrix by the walk-on-spheres method. In this way the electrical properties of CNT nanocomposites, both before and after percolation, are predicted. It is demonstrated that the developed theory compares well with three sets of experimental data for the electrical conductivity and several sets of data for the percolation threshold. The effects of barrier heights, polymer conductivity, aspect ratio, diameter (and chirality) of CNTs are also investigated. This equipotential approximation possesses the distinct features that it can break through the limits of ellipsoidal fillers and properly estimate the electrical conductivity with any shape, orientation and distribution of fillers.
语种：
英文
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Substrate temperature compensation for microbolometric focal plane array without TEC
作者：
Chen, Xiqu* ;Fang, Chao;Lv, Qiang;Shang, Zikai
期刊：
Optik ,2019年188:110-114 ISSN：0030-4026
通讯作者：
Chen, Xiqu
作者机构：
[Shang, Zikai; Fang, Chao; Lv, Qiang; Chen, Xiqu] Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan, Hubei, Peoples R China.
通讯机构：
[Chen, Xiqu] W;Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan, Hubei, Peoples R China.
关键词：
Bolometers;Focal plane arrays;Focusing;Temperature distribution;Temperature sensors;Infrared response;Infrared responsivity;Microbolometer;Microbolometer arrays;Readout integrated circuits;Responsivity;Substrate temperature;Voltage signals;Substrates
摘要：
For a normal microbolometric focal plane array, the microbolometric infrared responsivity varies with its substrate temperature fluctuations because of the semiconductor characteristics of the microbolometer array. The relationship between the microbolometric infrared responsivity and substrate temperature is theoretically discussed in this paper. Above the discussion, a new substrate temperature compensation method is proposed for microbolometric focal plane array without TEC. The microbolometric focal plane array is based on a kind of high-speed CMOS readout integrated circuit, of which the microbolometric infrared response voltage signal can be directly read out without infrared response current integration. The bias current for the microbolometer with the proposed substrate temperature compensation method can be adjusted according to the substrate temperature change to achieve a steady microbolometric infrared responsivity. This kind of substrate temperature compensation method is theoretically strict and has been experimentally verified in our laboratory, which is potential for future high-speed, lower-power and small-pixel microbolometric focal plane array. © 2019 Elsevier GmbH
语种：
英文
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Growth and Optical Properties of ZnSe Nanofilms Obtained from Modified Ammonia-free Chemical Bath Solution
作者：
Chen, Liangyan* ;Fang, Chao;Liu, Weihua;Chen, Xiqu;Zhao, Le
作者机构：
[Chen, Liangyan; Zhao, Le; Fang, Chao; Liu, Weihua; Chen, Xiqu] Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan, Hubei, Peoples R China.
会议名称：
2018 IEEE International Conference on Manipulation, Manufacturing and Measurement on the Nanoscale (3M-NANO)
会议时间：
August 2018
会议地点：
Hangzhou, China
会议主办单位：
[Chen, Liangyan;Fang, Chao;Liu, Weihua;Chen, Xiqu;Zhao, Le] Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan, Hubei, Peoples R China.
会议论文集名称：
2018 IEEE International Conference on Manipulation, Manufacturing and Measurement on the Nanoscale (3M-NANO)
关键词：
Chemical Bath solution;ZnSe Films;Growth Kinetics;Optical Properties
摘要：
ZnSe nano thin films were obtained with chemical bath deposition in an modified aqueous alkaline solution in which ammonia was eliminated from the complexing agent in our present work. The as-deposited films are transparent, specula reflective and homogenous. Energy-dispersive X-ray spectroscopy indicated that films were in near stiochiometric Zn:Se ratio. Measured by spectroscopic ellipsometry, thickness of 50 similar to 370nm film can be obtained, the ZnSe were in nano-films, morphology and the film formation process discussion indicated that the film grow through nano-cluster by nano-cluster deposition rather than ion by ion mechanism. Absorption of the annealed films in visible light area indicated that bandgap is around 2.8eV for the annealed ZnSe film obtained from modified ammonia free solutions, corresponding to the standard band gap for bulk ZnSe materials.
语种：
英文
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Theoretical analysis on signal bandwidth for microbolometric focal plane array
作者：
Chen, Xiqu* ;Fang, Chao;Lv, Qiang;Yang, Rui
期刊：
Optik ,2018年170:452-457 ISSN：0030-4026
通讯作者：
Chen, Xiqu
作者机构：
[Fang, Chao; Yang, Rui; Lv, Qiang; Chen, Xiqu] Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan, Hubei, Peoples R China.
通讯机构：
[Chen, Xiqu] W;Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan, Hubei, Peoples R China.
关键词：
Bolometers;Focal plane arrays;Focusing;Integrated circuit manufacture;Integrated circuits;Signal to noise ratio;Temperature sensors;Infrared response;Infrared signal;Microbolometer;Microbolometer arrays;Readout integrated circuits;Signal bandwidth;Signal to noise;Theoretical expression;Bandwidth
摘要：
Based on the discussion of infrared signal readout structure for microbolometric focal plane array, the microbolometric infrared response signal bandwidth is theoretically analyzed in this paper. The infrared response signal channel in microbolometric focal plane array normally consists of several major parts and every one of these different parts has its own signal bandwidth. The signal bandwidth expressions for these parts are theoretically deduced on their physical thermal model or integrated circuit structures, and some key parameters to decide the microbolometric signal bandwidth are revealed in these expressions. These signal bandwidth expressions are theoretically strict and can be utilized to optimize the final infrared response signal bandwidth for any practical microbolometric focal plane array. These theoretical expressions have been successfully applied to guiding the microbolometer structure and readout integrated circuit design in our laboratory, and are useful for a microbolometric focal plane array to have an optimized signal bandwidth and achieve excellent signal-to-noise performance as well. © 2018 Elsevier GmbH
语种：
英文
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Temperature compensation readout integrated circuit for microbolometric focal plane array
作者：
Chen, Xiqu* ;Fang, Chao;Lv, Qiang;Qing, Kun
期刊：
Optik ,2018年155:301-306 ISSN：0030-4026
通讯作者：
Chen, Xiqu
作者机构：
[Qing, Kun; Fang, Chao; Lv, Qiang; Chen, Xiqu] Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan, Hubei, Peoples R China.
通讯机构：
[Chen, Xiqu] W;Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan, Hubei, Peoples R China.
关键词：
Bias voltage;Bolometers;Focal plane arrays;Focusing;Temperature;Temperature distribution;Temperature sensors;Thermoelectric equipment;Timing circuits;Microbolometer arrays;Nonuniformity;Operating temperature;Readout integrated circuits;Temperature compensation;Thermoelectric characteristics;Thermoelectric cooler;Thermoelectric parameters;Integrated circuits
摘要：
Based on the theoretical analysis of microbolometer thermoelectric characteristics and temperature response, a new kind of temperature compensation readout integrated circuit for microbolometric focal plane array is proposed. The proposed readout integrated circuit provides different bias voltages for different microbolometers to control their bias currents and allow the whole microbolometric focal plane array have a wide range of operating ambient temperature. This kind of readout integrated circuit can compensate not only the operating temperature fluctuation but also the thermoelectric-parameter nonuniformity for microbolometer array. Experimental results in our laboratory show that the microbolometric focal plane array on the basis of the proposed readout circuit has well uniform voltage responses of the microbolometers in the focal plane array at different ambient temperatures to the same microbolometric temperature change. The proposed temperature compensation readout integrated circuit is potential for the design of practical low-consumption and high-resolution microbolometric focal plane arrays without thermoelectric coolers. © 2017 Elsevier GmbH
语种：
英文
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A tunable optical 90° hybrid composed of a 2×4 MMI, a 2×2MMI coupler, and a Heater pad
作者：
Liu, Weihua* ;Chen, Xiqu;Fan, Chao
期刊：
Proceedings of SPIE - The International Society for Optical Engineering ,2017年10460 ISSN：0277-786X
通讯作者：
Liu, Weihua
作者机构：
[Fan, Chao; Liu, Weihua; Chen, Xiqu] Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Liu, Weihua] W;Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan 430023, Hubei, Peoples R China.
会议名称：
Annual Conference of the Chinese-Society-for-Optical-Engineering (CSOE) on Applied Optics and Photonics China (AOPC) - Optoelectronics and Micro/Nano-Optics
会议时间：
JUN 04-06, 2017
会议地点：
Beijing, PEOPLES R CHINA
会议主办单位：
[Liu, Weihua;Chen, Xiqu;Fan, Chao] Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan 430023, Hubei, Peoples R China.
会议论文集名称：
Proceedings of SPIE
关键词：
Multimode Interference;Optical Waveguide;Coherent Receiver
摘要：
A tunable optical 90°hybrid composed of a 2 ×4 multimode interference (MMI), a 2 ×2 MMI coupler and a heater pad is proposed, and a set of formulas was deduced for calculation the light intensity output of the device. The simulation has been performed, and the results show agreement with analytical predication. In the wavelength range of c band, the imbalances are below 0.04dB, the excess loss is less than 0.45 dB, and the phase deviations are below 3°. The fabrication tolerance of width as high as 0.3μm, which is larger than traditional optical 90°hybrid.<br/> ©2017 SPIE.
语种：
英文
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A new readout structure with multiplexed output circuits for monolithic uncooled FPA
作者：
Huang, Hailin* ;Liu, Weihua;Qing, Kun;Chen, Xiqu
期刊：
Proceedings of SPIE - The International Society for Optical Engineering ,2017年10605 ISSN：0277-786X
通讯作者：
Huang, Hailin
作者机构：
[Qing, Kun; Liu, Weihua; Huang, Hailin] Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan 430023, Hubei, Peoples R China.;[Chen, Xiqu] Huazhong Univ Sci & Technol, Dept Optoelect Engn, Wuhan 430074, Hubei, Peoples R China.
通讯机构：
[Huang, Hailin] W;Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan 430023, Hubei, Peoples R China.
会议名称：
Conference on LIDAR Imaging Detection and Target Recognition
会议时间：
JUL 23-25, 2017
会议地点：
Changchun, PEOPLES R CHINA
会议主办单位：
[Huang, Hailin;Liu, Weihua;Qing, Kun] Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan 430023, Hubei, Peoples R China.^[Chen, Xiqu] Huazhong Univ Sci & Technol, Dept Optoelect Engn, Wuhan 430074, Hubei, Peoples R China.
会议论文集名称：
Proceedings of SPIE
关键词：
CMOS ROIC;Focal plane array;Readout circuit;Structure
摘要：
In this paper, a new readout structure for monolithic uncooled focal plane array is proposed. The proposed readout structure contains several or dozens of readout integrated circuits modules and these modules work independently and output their pixel signals concurrently. For monolithic uncooled focal plane array, each module of readout integrated circuit can output its infrared sensing voltage signals at its maximum output speed, and the whole focal plane array has multiplexed outputs at a time. This kind of readout structure is appropriate for ultra-large-scale monolithic uncooled focal plane array and can be applied to future uncooled focal plane arrays. © 2017 SPIE.
语种：
英文
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Theoretical analysis of temperature response to target temperature for microbolometer
作者：
Chen, Xiqu* ;Lv, Qiang
期刊：
Optik ,2017年138:175-179 ISSN：0030-4026
通讯作者：
Chen, Xiqu
作者机构：
[Lv, Qiang; Chen, Xiqu] Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan, Peoples R China.
通讯机构：
[Chen, Xiqu] W;Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan, Peoples R China.
关键词：
Signal processing;Temperature;Temperature sensors;Fundamental principles;Infrared detection;Microbolometer;Response;Signal processing circuits;Temperature changes;Temperature response;Theoretical expression;Bolometers
摘要：
Based on the fundamental principle of target radiation and microbolometer infrared detection, the microbolometric temperature response to infrared-target temperature change is theoretically analyzed and an exact microbolometric temperature response expression is obtained in theory. The theoretical expression is verified in our laboratory and can be utilized to correct the conventional temperature response expression. Moreover, the theoretical expression can predict temperature change in microbolometer to target temperature and guide the design of electronic-respond-signal processing circuits. © 2017 Elsevier GmbH
语种：
英文
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浅析如何提高《传感器与检测技术》课程的教学效果
作者：
刘卫华;陈西曲;黄海林;方焯
期刊：
科技视界 ,2016年(2):54-54 ISSN：2095-2457
作者机构：
武汉轻工大学电气与电子工程学院,湖北武汉,430023;[方焯; 刘卫华; 陈西曲; 黄海林] 武汉轻工大学
关键词：
学习兴趣;教学效果;传感器
摘要：
本文以《传感器与检测技术》课程为例，简要分析了提高该课程教学效果的对策。通过对教学内容与方法的持续改善，例如采用引导式提问，丰富的教学案例和新的教学手段，能增加学生的学习兴趣，提高学生学习的参与程度。另外与学生的适当沟通和严格的课堂管理，有助于改善教学效果。
语种：
中文
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High-speed CMOS readout integrated circuit for small-pixel-size microbolometric focal plane array
作者：
Chen, Xiqu* ;Lv, Qiang
期刊：
Optik ,2016年127(5):2907-2910 ISSN：0030-4026
通讯作者：
Chen, Xiqu
作者机构：
[Lv, Qiang; Chen, Xiqu] Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan, Peoples R China.
通讯机构：
[Chen, Xiqu] W;Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan, Peoples R China.
关键词：
Bolometers;CMOS integrated circuits;Focal plane arrays;Focusing;Integrated circuits;Reconfigurable hardware;Superconducting materials;Temperature sensors;Voltage measurement;Infra-red irradiation;Integration time;Microbolometer;Microbolometer arrays;Read-out circuit;Readout integrated circuits;Voltage response;Voltage signals;Pixels
摘要：
A novel kind of high-speed CMOS readout integrated circuit for large-scale microbolometric focal plane array is proposed in this paper. The proposed readout integrated circuit can directly amplify the voltage signals of all microbolometric pixels in focal plane array response to infrared irradiation and then output the amplified voltage signals column by column and row by row. Because there is no need of photo-generated current integration capacitor for microbolometric voltage response, the readout integrated circuit can save a lot of readout circuit area for small-pixel-size. In addition, the proposed CMOS readout integrated circuit can produce an output of the sensing voltage signals of microbolometer array at very high speed for which there is no integration time consumption when the microbolometric focal plane array operates. © 2015 Elsevier GmbH. All rights reserved.
语种：
英文
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A new temperature compensation method for microbolometric focal plane array
作者：
Chen, Xiqu
* ;Fang, Chao;Li, Xianghu;Zhan, Bifu
（ ;He, Qun
期刊：
Optik ,2016年127(18):7132-7136 ISSN：0030-4026
通讯作者：
Chen, Xiqu
作者机构：
[Zhan, Bifu; Fang, Chao; Chen, Xiqu; He, Qun; Li, Xianghu] Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan, Peoples R China.
通讯机构：
[Chen, Xiqu] W;Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan, Peoples R China.
关键词：
Bias voltage;Bolometers;Focal plane arrays;Focusing;Temperature distribution;Thermography (temperature measurement);Bias;Different substrates;Heat balance equations;Low-power consumption;Microbolometer;Substrate temperature;Temperature compensation;Voltage responsivity;Temperature sensors
摘要：
Based on the analysis of the physical thermal model for a microbolometer under pulse bias, a new temperature compensation method for microbolometric focal plane array is proposed to compensate the substrate temperature fluctuation in microbolometric array. The self-heating and infrared responding voltage expressions of the microbolometer under pulse current bias are derived from the heat balance equation of the physical thermal model for the microbolometer, and these two expressions indicate that the microbolometer self-heating and infrared voltage responsivity expressions are dependent on the substrate temperature of the microbolometer with some other constant characteristic parameters. Through the obtained expressions, different pulse bias currents are provided to the microbolometer and its corresponding blind element at different substrate temperatures to get the same voltage responsivity of the microbolometer at different ambient temperatures. The proposed temperature compensation method can be utilized for a microbolometric focal plane array with low-power consumption and high temperature-resolution. © 2016 Elsevier GmbH
语种：
英文
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基于单片机的点阵音乐盒设计
作者：
肖文树;陈西曲
期刊：
数字技术与应用 ,2016年(2):155-155 ISSN：1007-9416
作者机构：
武汉轻工大学电气与电子工程学院 湖北武汉 430023;[肖文树; 陈西曲] 武汉轻工大学
关键词：
单片机;音频驱动;点阵显示
摘要：
本文是应用AT89C51单片机和点阵显示理论设计音乐盒演奏和8＊8点阵显示的硬件电路,并利用c进行程序设计。通过控制单片机内部的定时器来产生不同频率的方波,并通过驱动喇叭发出不同音调的音乐,再利用软件延迟来控制发出音调时间的长短。把乐谱转化成相应的定时常数就可以从发音设备中演奏出悦耳动听的音乐。这种控制电路结构简单,可用性高,操作性好,应用性强;软件程序适应范围很广,对于不同的音乐只需要改变相应的定时常数即可。
语种：
中文
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电子信息科学与技术战略性新兴专业人才培养方案的探讨
作者：
陈西曲;黄海林;文国知;方焯
期刊：
高教学刊 ,2015年(24):200-201 ISSN：2096-000X
作者机构：
武汉轻工大学 电气与电子工程学院,湖北 武汉,430023;[方焯; 文国知; 陈西曲; 黄海林] 武汉轻工大学
关键词：
培养方案;电子信息;新兴专业
摘要：
针对电子信息科学与技术战略性新兴专业,指出了人才培养目标定位的相关问题,在分析传统电子信息科学与技术专业人才培养方案的基础上,提出了该专业人才培养方案的改革建议,为提高电子信息科学与技术战略性新兴专业人才培养质量提供参考。
语种：
中文
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小波在图像压缩中的应用
作者：
程鹏举;陈西曲
期刊：
机械工程与自动化 ,2015年(3):35-36+39 ISSN：1672-6413
作者机构：
武汉轻工大学电气与电子工程学院,湖北武汉,430023;[陈西曲; 程鹏举] 武汉轻工大学
关键词：
小波分析;图像压缩;图像处理
摘要：
为了有效利用现代通信业务和信息处理中的宝贵资源 ,需要对图像信息进行压缩.由于图像所含的内容主要集中在低频部分 ,所以一般利用小波滤掉图像的高频部分来实现图像的压缩.小波包是在小波的基础上发展起来的 ,解决了小波对图像高频信息不能提取的弊病.实验表明 :利用小波技术对害虫图像进行处理压缩 ,具有处理速度快、视觉效果好、保存了图像的主要数据等优点.
语种：
中文
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Reducing thermal contact resistance using thermocompression method to bond vertically aligned carbon nanotubes in magnetic field
作者：
Qiang Lv;Xizheng Hu;Xiqu Chen;Zhiyin Gan
期刊：
Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems ,2015年229(3):117-120 ISSN：2397-7914
通讯作者：
Gan, Zhiyin(caeolus@gmail.com)
作者机构：
[Qiang Lv; Xiqu Chen] School of Electrical and Electronic engineering, Wuhan Polytechnic University, Wuhan, China;[Xizheng Hu] The Experiment Center of the Second Artillery College, Wuhan, China;[Zhiyin Gan] School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, China
通讯机构：
School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, China
关键词：
Thermal interface materials;Thermal resistance;Vertically aligned carbon nanotubes
摘要：
<jats:p> With the increasing power densities of chip and diminishing size of semiconductor chips, thermal interface materials become a research emphasis to accelerate the development of semiconductor industry. Vertically aligned carbon nanotubes are good thermal interface materials because of high thermal conductance and excellent mechanical compliance. To reduce the thermal contact resistance between vertically aligned carbon nanotubes and silicon, thermocompression method in magnetic field was used to bond them in this work. The surface of vertically aligned carbon nanotubes was metallized with nickel and a vacuum chamber was used as bonding condition. The thermal contact resistance R<jats:sub>mc</jats:sub> between vertically aligned carbon nanotubes and metallized Si of 12 sample groups were measured with a thermal transient tester. The result shows that the R<jats:sub>mc</jats:sub> with magnetic field is 14% lower than the R<jats:sub>mc</jats:sub> without magnetic field averagely. The magnetic field can be used to reduce the thermal contact resistance between vertically aligned carbon nanotubes and metallized Si. </jats:p>
语种：
英文
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Resistance hysteresis loop characteristic analysis of VO2 thin film for high sensitive microbolometer
作者：
Chen, Xiqu* ;Lv, Qiang
期刊：
Optik ,2015年126(20):2718-2722 ISSN：0030-4026
通讯作者：
Chen, Xiqu
作者机构：
[Lv, Qiang; Chen, Xiqu] Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan, Peoples R China.
通讯机构：
[Chen, Xiqu] W;Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan, Peoples R China.
关键词：
Bolometers;Electric resistance;Hysteresis;Hysteresis loops;Temperature sensors;Vanadium dioxide;Infrared responsivity;Loop characteristics;Measured results;Numerical calculation;Operating temperature;Resistance characteristics;Thermo sensitive;VO2 thin film;Thin films
摘要：
Based on the Preisach model for hysteresis loop, the resistance hysteresis loop characteristic of thermosensitive VO2 thin film is theoretically analyzed. The resistance characteristics dependent on temperature in the resistance hysteresis loop can be obtained through theoretical numerical calculation, and the numerical calculated results are in good agreement with the experimentally measured results of some VO2 thin film samples in our laboratory. The resistance characteristics calculated results can be utilized to predict the infrared responsivity of high sensitive microbolometer of VO2 thin film and direct the operating temperature optimization for microbolometer. © 2015 Elsevier GmbH.
语种：
英文
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