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Sehen Sie sich die Kollektion für die COMSOL Conference 2024 an
The detection back-action phenomenon has received little attention in physical, chemical, and biological sensors based on nanomechanical systems. We show that this effect is very significant in ultrathin bimetallic cantilevers, in which the laser beam that probes the picometer scale ... Mehr lesen
An Ion Mobility Spectrometer is a device to analyze different components of a gas mixture. A feature of this technology is the ultra-low detection limit which can be obtained for most trace gases. Due to a limited resolution which is needed to differ between different components an ... Mehr lesen
In semiconductor gas sensors, the base of the gas detection is the interaction of the gaseous species at the surface of the semiconducting sensitive material. Since the chemical reactions at the surface of the sensor material are functions of temperature. We simulate our µHeater design ... Mehr lesen
基于纸基微流控芯片(μPAD)的核酸提取和扩增反应需均匀稳定、快速响应的热源。半导体制冷器具有无需制冷剂和体积小等优点，可为纸基芯片提供便携式、低功耗分析平台。相较于其他传统核酸扩增与检测设备，μPAD可以借助内部纤维结构的毛细作用自驱动输送流体介质。并且，微尺度下纤维结构具备较高的比表面积，在原理上可改善常规比色、荧光等检测方法的检出限和精准度。然而，滤纸材料本征参数对试剂溶液动态扩散过程和反应结果影响很大，数值仿真模拟是μPAD性能分析和优化设计的重要途径。本文应用COMSOL®热电效应耦合模块和非等温流动耦合模块，获取芯片内部的温度场信息，评价μPAD温控系统设计 ... Mehr lesen
Monitoring the Central aorta is a more effective way to diagnose cardiovascular diseases than conventional techniques. Approximately, six million people in the world are currently living with aortic aneurysm and every year 750,000 new cases are diagnosed. This paper presents the design ... Mehr lesen
Deformable image registration is a form of medical image processing that can provide insights into the development of phenomenon and variation in normal anatomical structure over time. Prior to post-operative pleural photodynamic therapy (PDT), a series of CT scans of lungs will be ... Mehr lesen
INTRODUCTION: Researchers in the biomedical field have recently become interested in the potential applications of plasomics. Surface plasmon resonance based on optical properties of metallic nanostructures can be used for detection of special biological targets. Gold nanostructures with ... Mehr lesen
Spacecrafts have a prime necessity that their temperature be controlled. This paper presents the simulation of a mechanically actuated field effect transistor that is used in a thermal system. It comprises of a composite beam, a piezoelectric substrate and a field effect transistor. The ... Mehr lesen
Surface plasmon resonance (SPR) sensors proved themselves as a promising device for many kinds of applications such as optical biosensing, binding constant determinationor nanofilm thickness measurements. Here we simulate using COMSOL Multiphysics® the light-polaritons coupling for the ... Mehr lesen
Partial differential equations (PDEs) govern many phenomena in nature. Solving optimization problems which comprises the solution of large number of PDEs, is expensive concerning time and memory. Therefore, to reduce the solution cost, original problem is transformed to a corresponding ... Mehr lesen