Here you will find presentations given at COMSOL Conferences around the globe. The presentations explore the innovative research and products designed by your peers using COMSOL Multiphysics. Research topics span a wide array of industries and application areas, including the electrical, mechanical, fluid, and chemical disciplines. Use the Quick Search to find presentations pertaining to your application area.

Study of Subwavelength Gratings to Understand Their Polarization Behaviour

M. G. Sridharan[1], A. Prabhakar[2], and S. Bhattacharya[2]
[1]Photonics Group, Department of Electrical Engineering, Indian Institute of Technology Madras, Chennai, India
[2]Department of Electrical Engineering, Indian Institute of Technology Madras, Chennai, India

Phase gratings are used in many applications owing to their high transmission and thus higher diffraction efficiencies. COMSOL is based on finite element modeling and is chosen for 2 reasons; firstly, because it can handle complex 2-D and 3-D geometries and secondly, it can handle the vector nature of these structures. The objective of the design is to compare the results of a commonly used ...

Characterization of a Tonpilz Transducer and Performance Analysis for a MEMS-Transducer Array

V. Vadde, and B. Lakshmi G

In this paper, we develop and analyze a standard piezoacoustic Tonpilz-transducer model for underwater acoustics in Comsol by addressing the attendant piezoelectric and pressure acoustic multiphysics phenomena. Transducer properties that are studied and characterized are the center frequency, bandwidth, linearity, sensitivity, and noise figure. In an effort to miniaturize the transducer, a ...

Design, Simulation and Study of MEMS Based Micro-Needles and Micro-Pump for Biomedical Applications

P. K. Podder, D. Mallick, D. P. Samajdar, and A. Bhattacharyya
Institute of Radio Physics and Electronics
University of Calcutta
West Bengal, India

In this paper, we have addressed the issues related to the design and simulation of MEMS based silicon micro-needles for insertion of fluid into the dermis layer and into the subcutaneous fat layer. In addition, a poly-silicon micro-pump based on the principle of electrostatic actuation has been designed and simulated which can be integrated with the proposed micro-needles to control the fluid ...

Design and Simulation of MEMS Based Electrothermal Micromirror for 3D Spatial Movement

D. Mallick, and A. Bhattacharyya
Institute of Radio Physics and Electronics
University of Calcutta
West Bengal, India

Micromirror is a versatile MEMS device, which finds use in many application areas. In this paper, we have addressed the issues related to the design and behavioral simulation of MEMS based electro-thermal micromirror [Figure 1] for 3D motion. Two types of thermal actuation mechanism are used in the designed device. For in-plane movement poly-silicon made two-hot-arm actuatoris used. Here, the ...

Optimized Design of Shielded Microstrip Lines using Adaptive Finite Element Method

P. Kakria[1], A. Marwaha[1], and M. S. Manna[2]
[1]Electronics & Communication department, SLIET Longowal, Distt. Sangrur, Punjab, India.
[2]Electrical & Instrumentation department, SLIET Longowal, Distt. Sangrur, Punjab, India.

In this paper, the attempt has been made to design and analyze single strip shielded Microstrip line with capacitive coupling. The main objective is to compute the capacitance per unit length of shielded Microstrip line using Finite Element technique. The computational and simulation work has been carried out with the help of FEM based COMSOL Multiphysics software. The shielded Microstrip ...

Analysis of Magnetic Resonance in Metamaterial Structure

C. Rajni[1], and A. Marwaha[2]
[1] Shaheed Bhagat Singh College of Engineering And Technology, Ferozepur, Punjab, India
[2] Sant Longowal Institute of Engineering And Technology, Sangrur, Punjab, India

‘Metamaterial’ is one of the most recent topic in several areas of science and technology due to its vast potential in various applications. These are artificially fabricated materials which exhibit negative permittivity and/or negative permeability. The unusual electromagnetic properties of metamaterial has opened more opportunities for better antenna design to surmount the limitations of ...

Evaluation of Tensile Modulus of Carbon Nanotube Bundle Based Composite with Interface Using Finite Element Method

M. S. Islam, F. O. Riktan, S. C. Chowdhury, M. M. R. Chowdhury, and S. Ahmed
Bangladesh University of Engineering & Technology (BUET)
Dhaka, Bangladesh

Carbon Nanotubes (CNTs) have remarkable mechanical, thermal and electrical properties. The properties of CNTs depend on atomic arrangement (how the sheets of graphite are rolled), the diameter and length of the tubes and morphology of nanostructure. In this paper effective elastic properties of CNT based polymer composites are evaluated using a square Representative Volume Element (RVE) in ...

A MEMS Condenser Microphone for Consumer Applications

S. L. Pinjare, V. S. Nagaraj, S. N. Savitha, S. Kesari, M. S. Sagar, and K. R. Roshan
Nitte Meenakshi Institute of Technology

The MEMS microphone is also called microphone chip or silicon microphone. The pressure sensitive diaphragm is etched directly into a silicon chip by MEMS techniques and is usually accompanied with integrated preamplifier. Most MEMS microphones are variants of the condenser microphone design. The MEMS microphone has been successfully fabricated and tested in an anechoic chamber. The microphone ...

Design and Simulation of a Nano-Wire Based Piezoresistive Pressure Sensor

S. A. Selvin, N. B. Moorthy, G. Anju, and M. Alagappan
PSG College of Technology
Tamil Nadu, India

This paper chalks out the design and performance of a piezo resistive surface micro machined circular diaphragm based pressure sensor. A structural deformation in the piezo resistive nano structure placed above the diaphragm will result in varied current density, which is in direct accordance with the applied pressure. This effect relies on the principle of piezo resistivity and employing a nano ...

Experimental and Theoretical Investigation of Acoustic Metamaterial with Negative Bulk-Modulus

N. R. Mahesh, and P. Nair
SSN College of Engineering
Tamil Nadu, India

Acoustic metamaterials are structured materials of negative mass density or negative bulk-modulus or both of them. Materials are tailored in sub-wavelength dimensions so as to get these negative properties. This paper compares the result of an experimental investigation of acoustic metamaterial with negative bulk-modulus to its COMSOL modeling. The resonance characteristics of single ...