HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

An optical toolbox for total control of droplet microfluidics

Abstract : The use of microfluidic drops as microreactors hinges on the active control of certain fundamental operations, such as droplet formation, transport, division and fusion. Recent work has demonstrated that local heating from a focused laser can apply a thermocapillary force on a liquid interface sufficient to block the advance of a droplet in a microchannel (Baroud et al., Phys. Rev. E. V 75, p.046302). Here, we demonstrate the usefulness of this optical approach by implementing the operations mentioned above, without the need for any special microfabrication or moving parts. Building blocks such as a droplet valve, sorter, fuser, or divider are shown, as is the combination of a valve and fuser using a single laser spot.
Document type :
Journal articles
Complete list of metadata

Cited literature [26 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-00383339
Contributor : Bernadette Bergeret Connect in order to contact the contributor
Submitted on : Tuesday, May 12, 2009 - 6:49:04 PM
Last modification on : Thursday, April 23, 2020 - 11:08:09 PM
Long-term archiving on: : Thursday, June 10, 2010 - 9:19:39 PM

File

Baroud-et-al-Lab_Chip_7_1029_2...
Files produced by the author(s)

Identifiers

Collections

Citation

Charles Baroud, Matthieu Robert de Saint Vincent, Jean-Pierre Delville. An optical toolbox for total control of droplet microfluidics. Lab on a Chip, Royal Society of Chemistry, 2007, 7 (8), pp.1029-1033. ⟨10.1039/b702472j⟩. ⟨hal-00383339⟩

Share

Metrics

Record views

350

Files downloads

626