A Microfluidic, Extensional Flow Device for Manipulating Soft Particles
A computer-controlled microfluidic extensional flow device is developed for trapping and manipulating micron-sized hard and soft particles. The extensional flow is generated in a diamond-shaped cross-slot that has each corner connected to a pressure-controlled liquid reservoir. By employing an imagi...
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ndltd-LACETR-oai-collectionscanada.gc.ca-OTU.1807-432632013-12-18T03:39:23ZA Microfluidic, Extensional Flow Device for Manipulating Soft ParticlesMotagamwala, Ali HussainMicrofluidicparticle trappingextensional flowtentiometry0542A computer-controlled microfluidic extensional flow device is developed for trapping and manipulating micron-sized hard and soft particles. The extensional flow is generated in a diamond-shaped cross-slot that has each corner connected to a pressure-controlled liquid reservoir. By employing an imaging-based control algorithm, a particle can be made to move to an arbitrary position within the slot by adjusting the reservoir pressures and hence the fluid flow rates into/out of the slot. Thus, a soft particle can be trapped indefinitely at a point within the slot, and a known hydrodynamic force can be applied to study the dynamics of stretching and breakup of the particle. Alternatively, adhesion or coalescence dynamics of soft particles may be investigated by effecting a controlled collision between two particles. The device is validated by measuring the low interfacial tension of a compatibilized oil-water interface.Ramachandran, Arun2013-112013-12-05T20:24:28ZNO_RESTRICTION2013-12-05T20:24:28Z2013-12-05Thesishttp://hdl.handle.net/1807/43263en_ca |
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Microfluidic particle trapping extensional flow tentiometry 0542 |
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Microfluidic particle trapping extensional flow tentiometry 0542 Motagamwala, Ali Hussain A Microfluidic, Extensional Flow Device for Manipulating Soft Particles |
description |
A computer-controlled microfluidic extensional flow device is developed for trapping and manipulating micron-sized hard and soft particles. The extensional flow is generated in a diamond-shaped cross-slot that has each corner connected to a pressure-controlled liquid reservoir. By employing an imaging-based control algorithm, a particle can be made to move to an arbitrary position within the slot by adjusting the reservoir pressures and hence the fluid flow rates into/out of the slot. Thus, a soft particle can be trapped indefinitely at a point within the slot, and a known hydrodynamic force can be applied to study the dynamics of stretching and breakup of the particle. Alternatively, adhesion or coalescence dynamics of soft particles may be investigated by effecting a controlled collision between two particles. The device is validated by measuring the low interfacial tension of a compatibilized oil-water interface. |
author2 |
Ramachandran, Arun |
author_facet |
Ramachandran, Arun Motagamwala, Ali Hussain |
author |
Motagamwala, Ali Hussain |
author_sort |
Motagamwala, Ali Hussain |
title |
A Microfluidic, Extensional Flow Device for Manipulating Soft Particles |
title_short |
A Microfluidic, Extensional Flow Device for Manipulating Soft Particles |
title_full |
A Microfluidic, Extensional Flow Device for Manipulating Soft Particles |
title_fullStr |
A Microfluidic, Extensional Flow Device for Manipulating Soft Particles |
title_full_unstemmed |
A Microfluidic, Extensional Flow Device for Manipulating Soft Particles |
title_sort |
microfluidic, extensional flow device for manipulating soft particles |
publishDate |
2013 |
url |
http://hdl.handle.net/1807/43263 |
work_keys_str_mv |
AT motagamwalaalihussain amicrofluidicextensionalflowdeviceformanipulatingsoftparticles AT motagamwalaalihussain microfluidicextensionalflowdeviceformanipulatingsoftparticles |
_version_ |
1716620270191509504 |