NDLI: Microfocusing using the thermal actuation of microbubbles

Content Provider	Springer Nature Link
Author	Son, Sang Uk Lee, Seung S.
Copyright Year	2008
Abstract	This paper describes the microfocusing in a microchannel using the thermal actuation of a pair of microbubbles. A microbubble was produced from de-ionized (DI) water with an integrated microheater, and the volume was controlled by applying voltage. The microfocusing was demonstrated with a polydimethylsiloxane (PDMS) device consisting of two layers. The top layer included a microchannel that was 300 μm wide and 50 μm high. It was flanked by a pair of reservoirs. The bottom layer provided a microheater underneath the reservoir. Upon heating, DI water boiled immediately over the microheater and formed a microbubble that came out of the reservoir in a perpendicular direction toward the fluid. The fluid was focused from 300 to 22 μm, as the distance between the apexes of the arch-shaped microbubbles was shortened due to expansion, which was maintained at a flow velocity up to approximately 17.8 mm s−1. The temperature of the water in the reservoir was estimated to reach the boiling point within 62 or 160 ms, depending on the substrate.
Starting Page	77
Ending Page	84
Page Count	8
File Format	PDF
ISSN	16134982
Journal	Microfluidics and Nanofluidics
Volume Number	6
Issue Number	1
e-ISSN	16134990
Language	English
Publisher	Springer-Verlag
Publisher Date	2008-05-06
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Microchannel Microheater PDMS Biomedical Engineering Engineering Fluid Dynamics
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Materials Chemistry Condensed Matter Physics Electronic, Optical and Magnetic Materials

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Thermocapillary actuation of droplet in a planar microchannel

Ferrofluid actuation with varying magnetic fields for micropumping applications

Microfluidic patterning of nanoparticle monolayers

Bubble dynamics in a microfluidic chamber under low-frequency actuation

Effect of relative particle size on large particle detachment from a microchannel

Microfluidic mixing via transverse electrokinetic effects in a planar microchannel

Bonding-less (B-less) fabrication of polymeric microsystems

Droplet transport through dielectrophoretic actuation using line electrode

Inhibition of on-chip PCR using PDMS–glass hybrid microfluidic chips

Microfocusing using the thermal actuation of microbubbles

Similar Documents

Thermocapillary actuation of droplet in a planar microchannel

Ferrofluid actuation with varying magnetic fields for micropumping applications

Microfluidic patterning of nanoparticle monolayers

Bubble dynamics in a microfluidic chamber under low-frequency actuation

Effect of relative particle size on large particle detachment from a microchannel

Microfluidic mixing via transverse electrokinetic effects in a planar microchannel

Bonding-less (B-less) fabrication of polymeric microsystems

Droplet transport through dielectrophoretic actuation using line electrode

Inhibition of on-chip PCR using PDMS–glass hybrid microfluidic chips

Microfocusing using the thermal actuation of microbubbles