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Triboelectric effect works on the principle of triboelectrification and electrostatic induction. This principle is used to generate voltage by converting mechanical energy into electrical energy. This paper presents the charging behavior of different capacitors by rubbing of two different materials using mechanical motion. The numerical and simulation modeling, describes the charging performance of...
We report on the investigation on mid-infrared AlInSb LEDs with an n-i-p structure. Compared to the conventional AlInSb LEDs with a p-i-n structure, a better current spreading corresponding to a uniform current distribution in the active region is expected in the n-i-p structure because of a high electron mobility in the n-type AlInSb material. The output optical power of laterally injected LEDs were...
We report our experiences of attempting to configure a single-walled carbon nanotube (SWCNT) / polymer composite material deposited on a micro-electrode array to carry out two classification tasks based on data sets from University of California, Irvine (UCI)[1]. The tasks are attempted using hybrid “in materio” computation: a technique that uses machine search to configure materials for computation...
Evolution-in-materio (EIM) is a form of intrinsic evolution in which evolutionary algorithms are allowed to manipulate physical variables that are applied to materials. This method aims to configure materials so that they solve computational problems without requiring a detailed understanding of the properties of the materials. The concept gained attention through the work of Adrian Thompson who in...
Evolution-in-materio (EIM) is a method that uses artificial evolution to exploit properties of materials to solve computational problems without requiring a detailed understanding of such properties. In this paper, we describe experiments using a purpose-built EIM platform called Mecobo to classify whether an applied square wave signal is above or below a user-defined threshold. This is the first...
This document details the design, implementation and analysis of a clamped-clamped capacitively-coupled beam resonator with a high Q-factor [>10000] in the VHF band [30-300MHz]. The document also draws a parallel between simulation results and theoretical results of key performance metrics of the design.
This paper presents the preliminary design of a biomimetic printable hexapod robot driven by soft actuators. The robot mimics the insect's design with six legs and shows the capability of versatile locomotion on flat terrains by using alternating tripod gait. The soft and multiple degree-of-freedom (multi-DOF) actuators based on dielectric elastomer provide required motions of the robot with a simple...
The design constraints of gas insulated switchgear(GIS) are changing due to an increasing power demand and decreasing available floor space for substations. Ideally, new GIS should operate at a higher nominal voltage with a minimal or no increase in size. Another ongoing development in the power industry is the desire to replace SF6 by an environmentally friendly gas which is preferably readily available...
In this paper, a 3D Finite Element model (FEM) of a surface acoustic wave (SAW) resonator consists of a piezoelectric thin film ScAlN /diamond layered structure with buried interdigital electrodes (IDT) was performed and analyzed using commercial software COMSOL Multiphysics, FEM software. We have done investigation on SAW propagation characteristics on the layered structures for different thickness...
The development of environment-friendly material has been proceeded in many fields. Our laboratory pays attention to electrical insulation system using ice. Ice is environment-friendly material, and it has excellent electrical breakdown strength at cryogenic region. However, it has problem that void or crack is easily formed. Mixture of water-soluble material is considered to prevent formation of...
In this study, we examined the accumulation mechanism of the space charge in a covering insulating material of motor windings under high voltage based on measurement results of space charge distributions. In these days, the inverter-fed motor drive using pulse width modulation control is applied to many electric devices for industrial machinery, automotive, railway cars and so on. For further improvement...
The aim of this work is to validate the two-stage design of an electrostatic separator for recycling of plastics from granular waste electrical and electronic equipment WEEE. This separator, which combines two different methods of tribocharging, is specially built for processing ternary mixtures of granular materials. The experiences were performed on a mixture of polyvinyl chloride (PVC), High impact...
A battery separator isolates anode and cathode electrically and contributes to the ionic conductivity on the one side. On the other side, it is a highly sensitive functional component concerning mechanical loads. During production as well as the operation of a battery this thin, polymer based film is stressed by compressive and tensile forces. This contribution presents an enhanced characterization...
Research carried out in our laboratory is devoted to new materials of electrodes for lithium ion batteries. This presentation focuses on anodic materials, especially on two examples, silicon and ruthenium nitride. In both cases, electrochemical properties and structural evolutions are correlated in order to optimize performances in terms of specific capacity, cyclability and rate capability.
The electrocardiogram (ECG) is one of the primary sources of information for assessing cardiovascular function. Conventional ECG systems are not suitable for continuous, long-term monitoring. Contactless measurement of ECG using capacitive sensors is emerging as an attractive alternative. One of the disadvantages of a contactless system is that the signal quality is poor as far as the clinical acceptance...
Spoken language contrasts to the written language that provides more prosodic features. There is variety of research about pitch accent in different language. But the less attention is paid to the auditory pitch accent processing and representation of the bilinguals. In the present study, the event-related potentials (ERPs) are used to investigate how Uyghur bilinguals represent and process pitch...
In this research, a novel magnetic catalyzed SnO2 with Mn3O4 of CMOS-MEMS gas sensor is firstly proposed. Beyond the conventional heating methods to obtain high chemical reaction rate, the sensitivity of gas sensors can be enhanced by using our proposed magnetic catalysis technique at ultra-low power consumption. Fabrication of sensor structure is realized by the standard 0.35µm CMOS process and MEMS...
A one-dimensional electrochemical DC pulse simplified model for an 8Ah lithium ion phosphate battery monomer is built with the help of COMSOL software on the base of the porous electrode theory. Based on the experimental data and analysis, the model can be optimized by putting the values of effective conductivity and the concentration of the lithium at different temperature as well as the equilibrium...
A simple testing procedure has been developed in order to investigate and screen the current interruption capability of vacuum interrupter contact materials. A synthetic circuit delivering adjustable AC currents, followed by a pulsed of 21 kV peak for 2 seconds has been used. The electrical tests has been developed to reproduce the conditions close to a fault current rated at 12 kV; only the recovery...
This paper presents the design and simulation results of an electrically biased liquid crystal based phase shifter for W-band frequencies. The return loss is simulated to less than 15 dB in a frequency range of 96 GHz to 104 GHz. In the same range, the insertion loss is less than 3.3 dB with a steadily increasing differential phase shift from 364° to 384°. This results in a phase shifter figure of...
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