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.
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Introduction: Singlet oxygen (¹O₂) has a critical role in the cell-killing mechanism of photodynamic therapy (PDT). Therefore, in this study, the distance-dependent reacted ¹O₂ is numerically calculated using finite-element method (FEM). Herein, we use a model [Ref. 1] that has been ... Read More
It is a complex problem to calculate the photonic crystal fiber model, and the methods of plane wave expansion, Hermite-Guasssian function and beam propagation have been analyzed. Finally the multipole method is adopted for solving problem. The hexagonal air holes in cladding have been ... Read More
In this paper a multiphysics approach to study the optical properties of integrated waveguides influenced by thermal and mechanical stress is presented. The heating and pressure effects are evaluated by means the Heat Transfer and Structural Mechanics modules respectively. Finally, the ... Read More
We present numerical simulations for the propagation of surface plasmon polaritons in a dielectric-metal-dielectric waveguide using COMSOL Multiphysics® software. We show that the use of an active dielectric with gain that compensates metal absorption losses enhances substantially ... Read More
The void shape evolution of silicon is a process driven mainly by surface diffusion which leads to a geometrical transformation of trenches etched in silicon wafers due to surface energy minimization. The temperature, the ambient gas and the annealing time affect the velocity of the ... Read More
Low-dimensional semiconductor nanostructures, in which charge carriers are confined in a number of spatial dimensions, are the focus of much solid-state physics research, offering superior optical and electronic properties over their bulk counterparts. Both two-dimensional (2D) and zero ... Read More
Plasmons, i.e. the collective oscillations of electrons in a metallic nano-structure, lead to strong light scattering, absorption and an enhancement of the local electromagnetic field. In this work, the local electric-field enhancement in a system of dielectric nanoparticles placed ... Read More
Uma fibra óptica retorcida pode se converter em uma estrutura longitudinalmente invariante através de uma transformação de coordenadas. O anterior permite fazer um analise de modos transversais da fibra, servindo para estudar a geração de modos com momento angular orbital (OAM). ... Read More
由于能源的消耗,太阳能电池越来越受到人们的关注。然而,作为商业中主要应用的晶硅太阳能电池存在表面入射光反射以及无法吸近红外光的性质限制了晶硅太阳能电池效率的进一步提高。因此,我们设计了一种内嵌二维光子晶体纳米圆锥的频率上转换超薄晶体硅太阳能电池,其中铒镱共掺氟化钇钠(NaYF4:Er3+/Yb3+)上转换层夹在Ag背反射层和活性层中间,利用COMSOL Multiphysics ®中波动光学模块系统的研究了具有不同结构和电介质填充材料纳米圆锥阵列对频率上转换晶硅太阳能电池陷光增效的影响。利用周期性边界条件及有限元的思想构建了电池计算单元,在300-1150 nm ... Read More
基于光学零空间介质定向投影性质,提出了设计形状任意的角反射器的方法。设计过程中仅需对角反射器入射面和出射面形状进行设计,然后利用光学零空间介质进行填充哦,只要保证入射面和出射面上的点经过零空间介质投影后满足80度的反转对应关系,即可实现角反射器的效果。角反射器可以被设计为各种不同形状,比如超薄平板结构(厚度为波长的2/3),所有不同形状的角反射器都只需要一种均匀的各向同性材料(光学零空间介质)即可实现。借助于COMSOL波动光学模块对提出的角反射器的性质进行了验证和模拟分析。模拟结果表明,在宽入射角范围角反射器都具有很高的角反射效率。 Read More