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| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Delville, Jean-Pierre Baroud, Charles N. Vincent, Matthieu Robert de Saint |
| Copyright Year | 2007 |
| 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 (C. N. Baroud, J.-P. Delville, F. Gallaire and R. Wunenburger, Phys. Rev. E: Stat., Nonlinear, Soft Matter Phys., 2007, 75(4), 046302). Here, we demonstrate the generality of this optical approach by implementing the operations mentioned above, without the need for any special microfabrication or moving parts. We concentrate on the applications to droplet manipulation by implementing a wide range of building blocks, such as a droplet valve, sorter, fuser, or divider. We also show how the building blocks may be combined by implementing a valve and fuser using a single laser spot. The underlying fundamentals, namely regarding the fluid mechanical, physico-chemical and thermal aspects, will be discussed in future publications. |
| Starting Page | 1029 |
| Ending Page | 1033 |
| Page Count | 5 |
| File Format | HTM / HTML PDF |
| ISSN | 14730197 |
| Volume Number | 7 |
| Issue Number | 8 |
| Journal | Lab on a Chip |
| DOI | 10.1039/b702472j |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Subscribed |
| Subject Keyword | Microfabrication Baroud Delville Laser Wunenburger Soft matter Gallaire |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Nanoscience and Nanotechnology Biochemistry Bioengineering Biomedical Engineering |
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