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Sehen Sie sich die Kollektion für die COMSOL Conference 2024 an
Today, 90 percent of automation sensors are binary proximity detectors. Besides capacitive and optical types, inductive proximity sensors are essential for industrial applications. Compared to their mechanical counterparts, they offer almost ideal properties as contact-free and wear-free ... Mehr lesen
A Proton Exchange Membrane Fuel Cell (PEMFC) is an electrochemical device, which converts a part of heat from the formation of water into electricity. Each cell has a Membrane-Electrode Assembly (MEA) which is placed between two electrically conducting plates having gas flow channels. An ... Mehr lesen
In spite of its low throughput, Patch-Clamp is the established method for intracellular measurements of the transmembrane potential. To address this problem, we have developed new biosensor-chips with micro-structured needle electrodes (MNEs). MNE-penetration of single cells growing on ... Mehr lesen
Metacomposites are new class of materials with unusual properties that can be engineered using existing materials with usual properties. The unusual properties of metacomposites are derived from the structure, analogues to atomic arrangement in crystal lattice. These material exhibits ... Mehr lesen
Electrical stimulation of the brain involves the application of currents delivered through scalp electrodes to modulate brain activity, known as Transcranial Current Stimulation (TCS). A critical factor for TCS efficacy and safety is the “spatial focality” of induced neuronal modulation. ... Mehr lesen
利用压电阻抗法获取压电材料随监测结构不同损伤状态而变化的阻抗信号来实现监测的目的，一般将压电材料粘贴于监测结构表面或者内嵌入结构，当施加交变电场于压电材料时，电场会激发压电材料产生相应的机械振动，从而对被监测的结构施加激励，不同健康状态的结构会产生不同的机械振动，而相应的振动信号会由于正压电效应而反应在压电材料的电阻抗变化中。因此通过提取不同应力状态时阻抗信号中结构的谐振或压电材料的谐振信息，建立特征频率与力载荷之间的关系，从而实现结构应力监测的目的。 模型采用四分之一对称模型，将压电片嵌于铝板之中。确定压电片的压电柔度矩阵、压电应变矩阵、相对介电矩阵 ... Mehr lesen
The most common cause of lithium ion battery failure is high temperature. Improper thermal management strategies can contribute to the temperature related premature battery failure. Excessive heat significantly impacts the performance, safety and cycle lifetime of the lithium ion ... Mehr lesen
Due to the complexity of electromagnetic modeling, researchers and scientists always look for development of accurate and fast methods to extract the parameters of electronic interconnects and package structures. In this paper, we illustrate modeling of multiconductor interconnects in ... Mehr lesen
We are developing approximations of electrically anisotropic materials for use in novel imaging methods. Our modeling work in COMSOL comprises comparisons of anisotropic and layered models in terms of electrical conductivities measured using different strategies. We tested solution ... Mehr lesen
Invented at the end of the XIXth century, the electrodynamic loudspeaker has not much changed since then. Although the materials have greatly evolved, the geometry and the transduction principle have remained the same. However, in many applications, the bulkiness of the driver behind the ... Mehr lesen