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Synthesis and Characterization of PPY-PANI-ZnO Hybrid Nanocomposites for OLEDs Applications as Electron Transport Layer 用于oled电子传输层的PPY-PANI-ZnO杂化纳米复合材料的合成与表征
Pub Date : 2019-04-01 DOI: 10.5185/amp.2019/7004
R. Kandulna
PPY, PANI and PPY-PANI-ZnO ternary nanocomposites were synthesized in the laboratory via chemical oxidative polymerization method. The formation of PPY, PANI and corresponding change in the nanostructure with the incorporation of ZnO was examined by X-ray diffraction technique (XRD). Nano-flakes like structure were formed in the PPY-PANI polymeric matrix with the embodiment of ZnO nanoparticles, as examined by surface topology images. Optical transmittance spectra showed the optimized reduced band gap ~2.67eV. Increased rate of electron-hole nonradiative recombination associated to blue and green bands was confirmed from PL spectra. An enhanced current density ~197.75% was examined due to the significantly improved conductivity of PPY-PANI-ZnO ternary nanocomposites. This improved conductivity, reduced band gap and high electron-hole recombination rate confirmed that it can be used as electron transport layer in the OLED devices. Copyright © VBRI Press.
采用化学氧化聚合法制备了PPY、PANI和PPY-PANI- zno三元复合纳米材料。利用x射线衍射技术(XRD)研究了ZnO掺杂后PPY、PANI的形成及其纳米结构的变化。通过表面拓扑图像检测,ZnO纳米粒子在PPY-PANI聚合物基体中形成了纳米片状结构。透射光谱显示,优化后的带隙减小至2.67eV。从PL光谱中证实了蓝带和绿带相关的电子空穴非辐射复合率的增加。由于PPY-PANI-ZnO三元复合材料的电导率显著提高,电流密度提高至197.75%。电导率的提高、带隙的减小和电子-空穴复合率的提高证实了该材料可作为OLED器件中的电子传输层。版权所有©VBRI出版社。
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引用次数: 1
Cutting Edge Research in Advanced Materials to Transform the World 先进材料的前沿研究将改变世界
Pub Date : 2019-04-01 DOI: 10.5185/amp.2019/0104
Nidhi Chauhan
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引用次数: 0
Laser and Vision-Based Obstacle Avoidance for A Semi-Autonomous ROV 基于激光和视觉的半自主ROV避障技术
Pub Date : 2019-04-01 DOI: 10.5185/amp2019.1459
Gilles Silva
Remotely operated vehicles (ROV) and Autonomous underwater vehicles (AUV) are increasingly being used for a large spectrum of maritime tasks for which human intervention is either dangerous or impossible. In case of complex tasks such as detailed inspection, difficult environment or even budget shortage, AUV may not be suitable. On the other hand dealing with repetitive actions or having to constantly react to obstacles may be excessively tiring for the ROV operator. In this paper we describe a low-cost Laser-based obstacle sensor which combined with the camera image allow the ROV to autonomously react without the intervention of the operator and even blocking his commands. In order for the ROV to take control, a C++ software was developed to receive ROV sensors data, process it and send commands using the same serial communications port the operator uses. All the calculations related to the Laser sensor are performed by a Matlab program whose results are shared with the former program. Tests were carried out in a swimming pool and the semi-autonomous ROV performed satisfactorily and efficiently. Copyright © VBRI Press.
遥控航行器(ROV)和自主水下航行器(AUV)越来越多地用于各种海上任务,这些任务要么是危险的,要么是不可能的。在复杂的任务,如详细的检查,困难的环境,甚至预算不足的情况下,AUV可能不适合。另一方面,处理重复动作或必须不断对障碍物做出反应可能会使ROV操作员过度疲劳。在本文中,我们描述了一种低成本的基于激光的障碍物传感器,它结合了相机图像,使ROV能够在没有操作员干预的情况下自主反应,甚至阻止他的命令。为了实现ROV的控制,开发了一个c++软件来接收ROV传感器的数据,处理数据并使用操作员使用的相同串行通信端口发送命令。与激光传感器相关的所有计算都由Matlab程序执行,其结果与前一个程序共享。在游泳池中进行了测试,半自主ROV的性能令人满意且高效。版权所有©VBRI出版社。
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引用次数: 0
Indoors Wi-Fi fall Detector Buckle for the Elderly 老年人室内Wi-Fi跌倒检测器扣
Pub Date : 2019-01-01 DOI: 10.5185/amp.2019.1450
M. C. Meneghel
Accidental falls may occur in the elderly, especially older than 65 years. Among the intrinsic factors that corroborate this fatality are the physiological changes resulting from the aging process. Factors such as inadequate lighting, uneven ground, or some obstacles along the way also contribute to falls. The literature indicates most falls occur in the domestic environment. In some cases, falls can cause serious injuries, such as bone fractures and head injuries. In these cases, intervention time to treat a person who has fallen is crucial. In this study, we developed a Wi-Fi fall detector buckle to be used indoors at waist height by the elderly. For testing purposes, we assumed a simple detection threshold that identifies a fall whenever the absolute value recorded by the accelerometer is greater than 2.3 g and the angle formed between the y-axis and the vertical sagittal axis of the buckle device is greater than 60°. The device is functional, adjustable, flexible and inexpensive. It is functional because it can differentiate falls from ADL with 84.1% accuracy, adjustable because it allows to change the fall detection threshold, flexible for including new detection algorithms and cheap because it uses components available in abundance in the market. Copyright © VBRI Press.
老年人,尤其是65岁以上的老年人,可能会发生意外跌倒。在证实这种死亡的内在因素中,由衰老过程引起的生理变化。光线不足、地面不平或沿途的障碍物等因素也会导致摔倒。文献表明,大多数跌倒发生在家庭环境中。在某些情况下,跌倒会造成严重的伤害,比如骨折和头部受伤。在这些情况下,干预时间治疗跌倒的人是至关重要的。在这项研究中,我们开发了一种Wi-Fi跌倒检测器扣,供老年人在室内腰部高度使用。为了测试目的,我们假设了一个简单的检测阈值,即当加速度计记录的绝对值大于2.3 g且扣环装置的y轴与垂直矢状轴之间形成的角度大于60°时,就可以识别出坠落。该装置功能齐全、可调节、灵活且价格低廉。它是功能性的,因为它可以区分跌倒和ADL的准确率为84.1%,可调,因为它允许改变跌倒检测阈值,灵活地包括新的检测算法,便宜,因为它使用了市场上大量可用的组件。版权所有©VBRI出版社。
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引用次数: 0
Dust concentration detection system based on wireless sensor network 基于无线传感器网络的粉尘浓度检测系统
Pub Date : 2019-01-01 DOI: 10.5185/amp.2019.1444
Zhang Quanzhu
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引用次数: 0
Residual Stress and Wear Studies of Deep Cryogenically Treated SAE 52100 Bearing Steel 深冷处理sae52100轴承钢的残余应力和磨损研究
Pub Date : 2019-01-01 DOI: 10.5185/amp.2019.1430
R. Siva
In this work mainly used to study the diffraction phases and residual stress on SAE 52100 bearing steel in which applying the effect of cryogenic treatment at various operating conditions. The tensile residual stress behavior is assessed by X-Ray diffractometer as per the ASTM standard E2860-12. Refinement of carbide particle by deep cryogenic treatment (DCT) is often proposed in literature as the improvement for the residual stress in the bearing steel. X-Ray diffractometer technique includes the identification of phases and quantitative analysis of crystalline chemical compounds, residual macro and micro stress analyses. The tensile residual stress increased by +30Mpa owing to deep cryogenic treatment when compared with that of conventional heat treatment (CHT). Moreover, the DCT process improves the hardness of SAE 52100 bearing steel by 15% compared to CHT process.
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引用次数: 0
Factors Affecting the Synthesis of Nano-Structure Materials 影响纳米结构材料合成的因素
Pub Date : 2019-01-01 DOI: 10.5185/amp.2018/1434
Lila A. Alkhtaby
We have to study the factors affecting the synthesis of Co doping ZnO Nano powder with the sol – gel method to study the effect of quantity or doping concentration we fix the reaction base at pH = 9 and change the doping concentration the structural and morphology carried out with X-ray and SEM show hexagonal wurtzite nanoparticles for Zn 1-x Co x O for x = 0.01 and x = 0.05 and increase of the cell volume and lattice parameter with increase of x concentration ,the florescence spectroscopy at room temperature show peaks at ultraviolet for both concentration with read shift for x = 0.05. To study the effect of pH value we fix doping concentration at x = 0.05, SEM shows a spherical nanoparticle with size 38 – 52 nm for pH = 9 and hexagonal nanoparticles with size 42 – 52 nm for pH = 6. The florescence spectroscopy at room temperature exhibit that for pH = 9 there is no band observed in the ultraviolet region bands are around 380,420 and 475 nm. The Ultraviolet/Visible (UV) Spectroscopy exhibit decrease of the band gap energy with increase doping concentration and decrease with increase pH value. Copyright © VBRI Press.
我们必须研究影响因素的合成Co掺杂氧化锌纳米粉体的溶胶-凝胶方法研究数量或掺杂浓度的影响在pH = 9我们修复反应基地,改变掺杂浓度的结构和形态进行了x射线和扫描电镜显示六角纤锌矿型纳米颗粒对锌1 - x公司x O x = 0.01和x = 0.05,增加细胞的体积和晶格参数x的浓度增加,开花的光谱当x = 0.05时,两种浓度在室温下均出现紫外峰。为了研究pH值的影响,我们将掺杂浓度固定在x = 0.05, SEM显示pH = 9时粒径为38 ~ 52 nm的球形纳米颗粒和pH = 6时粒径为42 ~ 52 nm的六边形纳米颗粒。室温下的荧光光谱表明,当pH = 9时,在紫外区没有观察到波段,波段约为380,420和475 nm。紫外/可见光谱显示,禁带能随掺杂浓度的增加而减小,随pH值的增加而减小。版权所有©VBRI出版社。
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引用次数: 0
Modeling of Transferring Processes in the Planar Electrochemical Sensors 平面电化学传感器传递过程的建模
Pub Date : 2019-01-01 DOI: 10.5185/amp.2019.1442
D. A. Zhevnenko
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引用次数: 1
Silver Jubilee Assembly of Advanced Materials Congress: At a Glance 先进材料大会五十周年大会:概览
Pub Date : 2019-01-01 DOI: 10.5185/amp.2019.1001
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引用次数: 0
Technology and application оf electrochemical motion sensors 电化学运动传感器技术与应用
Pub Date : 2019-01-01 DOI: 10.5185/amp.2019.1449
V. Krishtop
In this paper, we consider technology and application of electrochemical transducers (ECT). Electrochemical systems are very promising for the development of a new element base for microelectronics. One of the most important directions is the design of micro-sized electrochemical acceleration and pressure sensors, and one of the most promising technologies is electrochemical transfer. Electrochemical transducers are very sensitive and energy-efficient and best suited for measuring weak mechanical movements. The basic principle consist in the following: microelectrodes are formed on a silicon chip and the chip is placed in a container with liquid electrolyte. Under the influence of an external mechanical signal, the electrolyte liquid starts moving (by inertia or by pressure) and transfers ions between the electrodes. The generated electric current is proportional to the external mechanical signal. We have developed a new microelectronic technology for electrochemical transducers, and have designed new instruments based on new electrochemical microelectronic chips. Currently, ECTs are applied for a variety of engineering tasks. ECTs are used to record the ground oscillation in the railway, in the tsunami early warning system, in electrochemical hydrophones for sea-bottom stations and for geoexploration systems, in the precise azimuth determination inertial systems. Copyright © VBRI Press.
本文讨论了电化学换能器的技术及其应用。电化学系统是一种很有前途的新型微电子元件基础。其中一个重要的方向是设计微型电化学加速度和压力传感器,而电化学转移是最有前途的技术之一。电化学换能器非常敏感和节能,最适合测量微弱的机械运动。其基本原理是:在硅片上形成微电极,并将硅片置于装有液体电解质的容器中。在外部机械信号的影响下,电解质液体开始移动(由于惯性或压力)并在电极之间转移离子。所产生的电流与外部机械信号成正比。我们开发了一种新的微电子技术用于电化学换能器,并设计了基于新型电化学微电子芯片的新型仪器。目前,ECTs可用于各种工程任务。在铁路、海啸预警系统、海底站电化学水听器和地质勘探系统、精确方位测定惯性系统中,ect被用于记录地面振荡。版权所有©VBRI出版社。
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引用次数: 6
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Advanced Materials Proceedings
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