See How Multiphysics Simulation Is Used in Research and Development
Engineers, researchers, and scientists across industries use multiphysics simulation to research and develop innovative product designs and processes. Find inspiration in technical papers and presentations they have presented at the COMSOL Conference. Browse the selection below or use the Quick Search tool to find a specific presentation or filter by application area.
View the COMSOL Conference 2023 Collection
Multiphysics Simulations for Robust Computational Modelling of Stochastic Nanostructures
This work explores the implications of wholly random and non-linear nanostructures on electromagnetic wave propagation within a multiphysics simulation environment. Showcased is a way to noticeably bypass the inaccuracies drawn from the linearity dependency of traditional simulation ... Read More
Estimating Parasitic Capacitances in MEMS Microphones using Finite Element Modeling
MEMS microphones consist of a conductive backplate and a conductive flexible membrane. The backplate and the membrane are at a certain distance from each other to be interpreted as parallel plates of a capacitor. When a bias voltage is applied to the electrodes, membrane deflection ... Read More
Actuation Force Study of Next Generation Micro Shutter Array for More Reliable Actuation
Micro shutter array (MSA) is a programmable optical spatial filtering device fabricated by micro electro-mechanical system (MEMS) technology. It was originally developed for James Webb Space Telescope (JWST) to enable multi-object spectroscopy and operated by a moving magnet. Next ... Read More
Multiphysics Analysis of a Micromirror System
The challenge of our current research is to design large aperture MEMS scanning mirrors for Light Detection and Ranging (LIDAR) applications such as in unmanned driving or Unmanned Aerial Vehicle. The current MEMS scanning mirrors have a smaller aperture which limits application, it can ... Read More
Simulation of a Novel Induced-Charge Electrokinetic Actuation Mechanism for a Diaphragm Micropump
From microelectronics cooling to biological analysis and wearable therapeutic infusion systems, micropumps are steadily becoming a valuable and ubiquitous tool for fluid transport and thermal management. Hence, the development of novel actuation mechanisms that allow for precise ... Read More
Impact of Operating Parameters on Precursor Separation in "Air Hockey" Spatial Atomic Layer Deposition Reactor
A defining characteristic of atomic layer deposition (ALD) is the sequential exposure of a surface to self-limiting, saturating reactions. Temporal ALD operates through intermittent purge cycles, while spatial ALD relies on physical separation accomplished by delivering reactants through ... Read More
2D Microstructure Image-based Simulation of Piezoresistive Graphene Networks
Flexible and highly sensitive piezoresistive nanomaterial systems have been demonstrated to possess considerable potential for monitoring structural integrity and human physiological performance. The piezoresistivity of the nanomaterial systems mainly stem from conductive/semi-conductive ... Read More
基于COMSOL仿真射频消融的热传导问题研究
基于COMSOL仿真射频消融的热传导问题研究 程家幸1 吴浪2 1.东南大学工程力学系，南京210096 2.南昌大学抚州医学院，抚州344100 摘要：在临床医学中，肿瘤的治疗方法不仅有传统的手术治疗，现如今消融术也是一种对早期乳头状肿瘤以及某些原发性不可切除的肿瘤早期阶段较好的医疗手段[1]。在本案例中，利用COMSOL Multipyhsics软件平台构建了一个具有20个“钩子”的电极，通过传热接口仿真电极加热使温度传导到周围组织以杀死细胞。其中，比较已存在的射频消融仿真案例[2] ... Read More
高性能TC-SAW谐振器
传统声表面波（SAW）滤波器技术存在Q值低（＜1000）和频率随工作温度漂移的特性，已经难以满足频段越来越拥挤的5G时代射频终端对滤波器的要求，因此，传统的SAW滤波器必须向具备高频率-温度稳定性的温度补偿型SAW（TC-SAW）滤波器发展。鉴于SiO2层与压电层具有相反温度弹性的特性，且该工艺比另一种键合温补方法简单、成本低，是目前国内外声表厂家广泛采用的一种温补方式。 对该种TC-SAW谐振器进行COMSOL建模仿真，研究SiO2层、指条层厚度对SAW波导的影响，以及材料参数和结构尺寸与SAW滤波器频率温度系数（TCF）及机电耦合系数之间的关系 ... Read More
高斯光作用下纳米颗粒微液滴内的Marangoni对流
光中包含着巨大的能量，光能的利用一直是研究的热点。基于半导体纳米颗粒的吸光特性（如二氧化钛、氧化锌、四氧化三铁等），我们首先通过实验研究了在光强具有高斯分布的激发光作用下，微液滴内悬浮纳米颗粒的受迫运动，发现在液滴内产生了~mm/s的对称涡流，表明这一方法是在粘性主导的微流动下形成高速流动的有效手段。机理分析表明，这一光与液滴相互作用问题的物理机制为非均匀光热效应(温度梯度~1000K/m)及其所诱导的Marangoni对流，是一个包含光、热、物质与流体双向作用、界面张力梯度的复杂多物理场耦合流动问题。为了模拟这一实验现象，我们在COMSOL ... Read More