V. Jain, A. K. Sharma, P. Kumar
Thapar University, Patiala, Punjab, India
Indian Institute of Technology Roorkee, Roorkee, Uttar Pradesh, India
The greatest challenge being faced for realization of Micro-Electro Mechanical System (MEMS) technology is the lack of a simple, quick and reliable method for the fabrication of 3-D microchannel in the range of micrometers. A novel fabrication technique which opens possibilities for the production of these microfluidic channels is presented in this paper. The present paper highlights the ...
V. Nivethitha, S. P. Rakavi, K. C. Devi
PSG College Of Technology, Coimbatore, Tamil Nadu, India
In this work, a piezoelectric tactile sensor will be designed and simulated using COMSOL Multiphysics®. The sensor is designed in order to assess the pressure exerted on the human body while the robotic surgery is performed. The sensor consists of a rigid and compliant cylindrical element. A circular PDMS (Polydimethylsiloxane) film is sandwiched between the rigid cylinder and the base plate to ...
V. Gnanaraj, V. Mohan, and B. Vellaikannan
Thiagarajar College of Engineering, Madurai, Tamilnadu, India
A fundamental understanding of the transport phenomena in microfluidic channels is critical for systematic design and precise control of such miniaturized devices towards the integration and automation of Lab-on- a-chip devices. Electroosmotic flow is widely used to transport and mix fluids in microfluidic systems. Electroosmotic transport in convergent divergent micronozzle is significant in ...
Viscous damping of a periodic perforated MEMS microstructure when the Reynolds’ equation cannot be applied: Numerical simulations
D. Homentcovschi, and R.N. Miles
Department of Mechanical Engineering, SUNY Binghamton, NY
This paper develops a computational model for determining the total damping coefficient for a unit cell of a MEMS microscale device containing a repetitive pattern of holes. The basic cell of the microstructure is approximated by an axi-symmetric domain and the velocity and pressure fields are determined from solutions of the Navier-Stokes equations using the finite element software package ...
D. Krizaj, I. Iskra, Z. Topcagic, and M. Remskar
University of Ljubljana, Faculty of Electrical Engineering, Ljubljana, Slovenia
Institut Jozef Stefan, Ljubljana, Slovenia
We are developing nanoparticle detector for airborn particles. The detection principle is based on condensation of nanoparticles forming micron sized water droplets and detection of the droplets by a capacitive type nanodetector. We have successfully performed some experimental evaluations of the detection principle and are in the stage of optimization of several parts of the system. As shown ...
T. Cavalcanti, A. Lima, J. Neto
Universidade Federal de Campina Grande, Campina Grande, PB, Brasil
Introdução: A medição adequada de vazão de fluidos é de grande importância nos processos industriais, pois tem implicações diretas na qualidade, produtividade, segurança e eficiência dos processos. Assim, torna-se necessário compreendermos como os fluidos se comportam para baixas velocidades, podendo, dessa forma, projetar estruturas que possam trabalhar em uma faixa de operação ...
R. Singh, M. Singh
National Institute of Technology Karnataka, Surathkal, Karnataka, India
Indian Institute of Technology Delhi, New Delhi, Delhi, India
Today, MEMS based accelerometers are used in a variety of applications. To name a few, they are used in safety systems in automobiles, it has added a new dimension to miniaturization of devices, it has replaced traditional piezoelectric accelerometers, which were big and difficult to use. For its various applications, differing bandwidth (operating frequency range) and amplitude of vibration are ...
M. Roshini, G .B. Priyanga, K. C. Devi
PSG College of Technology, Coimbatore, Tamil Nadu, India
The objective of this paper is to design and simulate Carbon Nano-Tube (CNT) based mass sensor that determines extremely low measures of molecules using COMSOL Multiphysics® software. The ultimate goal of this nanomechanical resonator sensor is that it allows detection at single molecular level. The change in the mass from the resonator can cause a shift in the resonant frequency. The ...
N. Qudus, T. Mahbub, S. A. Ali, and M. Shajahan
 Bangladesh University of Engineering and Technology, Dhaka Bangladesh
A finite element model is employed to describe the electric potential distribution and electroosmotic flow field inside a wavy cylindrical channel. The model uses coupled Laplace and Poisson-Boltzmann to evaluate the electric potential distribution inside the channel. It also contains continuity and Navier–Stokes equations for the solution of fluid flow. A particle trajectory model was ...
B.P. Cahill, M. Quade, G. Gastrock, K. Lemke, J. Metze, and D. Beckmann
Institut für Bioprozess und Analysenmesstechnik e.V., Rosenhof, Heilbad Heiligenstadt, Germany
This paper presents a simulation of the operation of a new type of droplet generation probe. This probe, consisting of two concentrically-arranged tubings, is immersed in a beaker of cell medium so that oil is pumped through the outer tubing at a pumping speed less than fluid is drawn into the inner tubing. In this way, droplets of cell medium are entrained into the outlet tubing forming a ...