Consultez les proceedings de la Conference COMSOL 2024
Microwave technology has provided with many exciting new therapeutic and diagnostic methods. Frequencies from RF as low as 400 kHz through microwave frequencies as high as 10 GHz are presently used for therapeutic applications in areas such as cardiology, urology, surgery, ophthalmology, ... En savoir plus
定量分析生物颗粒形态的变化可以为疾病诊断提供依据。例如血红细胞形态的变化常常会伴随有相应的血液疾病[1]，细胞的癌变常常伴随有细胞核形态的变化[2]等等。无标记的光学显微成像技术已经可以对生物颗粒的尺度和形状进行直接测量。光声显微成像技术 (PAM) 利用生物颗粒固有的吸光本领，已经可以对单个生物颗粒（如细胞和细胞器）进行成像[3]。 最近，光声流式仪(the photoacoustic flow-cytometry)已经实现了对单个生物颗粒进行连续检测[4]。然而，为了在大量的生物颗粒中快速检测生物颗粒的形貌，最好的方法是并非对其进行直接成像，而是采用高频光声显微技术 ... En savoir plus
Imaging Infrared Spectrometer (IIRS) is a Hyperspectral optical imaging instrument which measures the spectra of a scene in high resolution within spectral bands covering Near Infrared (NIR) to Mid Infrared (MIR) regions. Radiation entering the spectrometer assembly governs the ... En savoir plus
Of utmost importance in appliance design and manufacture are the features for protection from fire and for personal safety. Appliance engineers are continually in pursuit of better,longer-life appliances that will provide both lower cost to the consumer and lower energy consumption. ... En savoir plus
We describe the thermal modeling of a crate hosting boards with Associative Memories (AM) designed for the Fast Tracker Trigger (FTK) system of the ATLAS detector at the CERN Large Hadron Collider. FTK is a highly paralleled hardware system designed to provide global tracks reconstructed ... En savoir plus
近年来，三维系统级封装技术逐渐成为人们的关注焦点，是下一代集成电路封装设计最有发展潜力的实现方案。然而，热管理是系统级封装技术需解决的关键问题。图1是典型的系统级封装结构，包含堆叠芯片、硅通孔、封装基板、热界面材料以及多层凸点结构。若对该结构的所有细节进行建模，将会消耗巨大的计算资源，导致分析效率非常低下。因此，本论文将封装中的硅通孔层以及凸点层等复杂结构进行等效处理，提取它们在水平和垂直方向上的等效热导率以及等效比热容、等效密度等参数。例如，在建模过程中，采用 COMSOL Multiphysics® 传热模块对硅通孔层的水平方向等效热导率进行提取，边界设置如图2所示 ... En savoir plus
Accurate thermo-physical properties of materials are valuable for both scientific research and industrial applications. For high temperature liquid materials, two issues exclude traditional methods: elevated reactivity of test material and experimental apparatus, uncontrolled heat ... En savoir plus
本作品通过研究微波炉矩形金属璧的单向移动，实现腔体内电场分布的变化，从而达到调节作用腔体内各点的电场分布的目的。图表1为仿真几何模型示意图，除了腔体内部的小块土豆，其余的腔体材料均为理想导体铜，腔体内为标准大气压下的空气。图表1中300mm30mm350mm矩形块的设计是为了更便捷地计算移动后的网格。本次仿真沿x轴正方向向外移动2的外侧面金属壁来实现腔体的移动。端口激励源为TE10模、频率2.45GHz、功率700W、相位为0的微波。图表2为金属壁移动示意图，通过软件的移动网格接口实现移动金属壁的仿真。仿真结果良好 ... En savoir plus
A new microwave cavity for the regeneration of DPF regeneration was proposed and COMSOL Multiphysics® FEM model was used to investigate heating properties of the Silicon Carbide (SiC) based DPF. Electric field profile and thermal profile of the microwave cavity and DPF was established ... En savoir plus
A three-dimensional heterogeneous model of breast has been modeled with a spherical tumor of 1.5 cm. PID controller has been used to perform temperature-controlled RFA of breast tumor. The coupled effect of blood perfusion and variable conductivity during RFA has been investigated. The ... En savoir plus