Microfluidic flow-cell with passive flow control for microscopy applications.
We present a fast, inexpensive and robust technique for constructing thin, optically transparent flow-cells with pump-free flow control. Using layers of glass, patterned adhesive tape and polydimethylsiloxane (PDMS) connections, we demonstrate the fabrication of planar devices with chamber height as...
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2020-01-01
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Online Access: | https://doi.org/10.1371/journal.pone.0244103 |
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doaj-b7c2adb29e264b35b1196719866ddb142021-03-05T05:33:04ZengPublic Library of Science (PLoS)PLoS ONE1932-62032020-01-011512e024410310.1371/journal.pone.0244103Microfluidic flow-cell with passive flow control for microscopy applications.Nicholas A W BellJustin E MolloyWe present a fast, inexpensive and robust technique for constructing thin, optically transparent flow-cells with pump-free flow control. Using layers of glass, patterned adhesive tape and polydimethylsiloxane (PDMS) connections, we demonstrate the fabrication of planar devices with chamber height as low as 25 μm and with millimetre-scale (x,y) dimensions for wide-field microscope observation. The method relies on simple benchtop equipment and does not require microfabrication facilities, glass drilling or other workshop infrastructure. We also describe a gravity perfusion system that exploits the strong capillary action in the flow chamber as a passive limit-valve. Our approach allows simple sequential sample exchange with controlled flow rates, sub-5 μL sample chamber size and zero dead volume. We demonstrate the system in a single-molecule force spectroscopy experiment using magnetic tweezers.https://doi.org/10.1371/journal.pone.0244103 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Nicholas A W Bell Justin E Molloy |
spellingShingle |
Nicholas A W Bell Justin E Molloy Microfluidic flow-cell with passive flow control for microscopy applications. PLoS ONE |
author_facet |
Nicholas A W Bell Justin E Molloy |
author_sort |
Nicholas A W Bell |
title |
Microfluidic flow-cell with passive flow control for microscopy applications. |
title_short |
Microfluidic flow-cell with passive flow control for microscopy applications. |
title_full |
Microfluidic flow-cell with passive flow control for microscopy applications. |
title_fullStr |
Microfluidic flow-cell with passive flow control for microscopy applications. |
title_full_unstemmed |
Microfluidic flow-cell with passive flow control for microscopy applications. |
title_sort |
microfluidic flow-cell with passive flow control for microscopy applications. |
publisher |
Public Library of Science (PLoS) |
series |
PLoS ONE |
issn |
1932-6203 |
publishDate |
2020-01-01 |
description |
We present a fast, inexpensive and robust technique for constructing thin, optically transparent flow-cells with pump-free flow control. Using layers of glass, patterned adhesive tape and polydimethylsiloxane (PDMS) connections, we demonstrate the fabrication of planar devices with chamber height as low as 25 μm and with millimetre-scale (x,y) dimensions for wide-field microscope observation. The method relies on simple benchtop equipment and does not require microfabrication facilities, glass drilling or other workshop infrastructure. We also describe a gravity perfusion system that exploits the strong capillary action in the flow chamber as a passive limit-valve. Our approach allows simple sequential sample exchange with controlled flow rates, sub-5 μL sample chamber size and zero dead volume. We demonstrate the system in a single-molecule force spectroscopy experiment using magnetic tweezers. |
url |
https://doi.org/10.1371/journal.pone.0244103 |
work_keys_str_mv |
AT nicholasawbell microfluidicflowcellwithpassiveflowcontrolformicroscopyapplications AT justinemolloy microfluidicflowcellwithpassiveflowcontrolformicroscopyapplications |
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1714799188005355520 |