Indian Science Technology and Engineering facilities Map
Supplier Map
Service Map

Publications

Publication Details

Applicant:
Indian Institute of Technology (IIT) Patna 
Author:
A. Raj, R. Halder, P. Sajeesh, A. K. Sen 
Corresponding Authors:
A. K. Sen 
DOI #:
10.1007/s10404-016-1768-4 
Title:
Droplet generation in a microchannel with a controllable deformable wall 
Journal:
Microfluidics and Nanofluidics 
Year:
2016 
Volume:
20 
Page:
102 
Keywords:
Droplet generation, microchannel 
Abstract:
We report the droplet generation behavior of a microfluidic droplet generator with a controllable deformable membrane wall using experiments and analytical model. The confinement at the droplet generation junction is controlled by using external pressure, which acts on the membrane, to generate droplets smaller than junction size (with other parameters fixed) and stable and monodispersed droplets even at higher capillary numbers. A non-dimensional parameter, i.e., controlling parameter Kp, is used to represent the membrane deformation characteristics due to the external pressure. We investigate the effect of the controlled membrane deformation (in terms of Kp), viscosity ratio λ and flow rate ratio r on the droplet size and mobility. A correlation is developed to predict droplet size in the controllable deformable microchannel in terms of the controlling parameter Kp, viscosity ratio λ and flow rate ratio r. Due to the deflection of the membrane wall, we demonstrate that the transition from the stable dripping regime to the unstable jetting regime is delayed to a higher capillary number Ca (as compared to rigid droplet generators), thus pushing the high throughput limit. The droplet generator also enables generation of droplets of sizes smaller than the junction size by adjusting the controlling parameter.  
Entered by:
Venkata Dantham on 2020-08-04 
 
I-Mitra(आई-मित्र) Welcomes You..
THE VISION
THE MISSION
ABOUT I-STEM
It has always been the basic tenet of the Government of India, in generously funding R&D efforts at academic institutions over the years, that facilities established through such support be made available to those needing them and qualified to make use of them for their own research work
read more >>

However, this was never easy or straightforward for, among other reasons, there was no ready source of information of what facility was available and where. Thanks to the Web, it is much easier today to have a national and regional “inventory of resources”, so as to match users with the resources they need, and to do all this in an efficient and transparent manner.

This can lead to a leap in R&D productivity and greatly enhance the effectiveness of public investment. This is the motivation behind I-STEM.
read less <<
Visitor Hit Counter
Hosted at Indian Institute of Science
Copyright © 2020 I-STEM. All rights reserved.
Audited by: STQC Bengaluru.