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Smart Materials for Liquid and Micro-vehicle Movement Control in Microfluidics: The Key to Realising Next Generation Chemical Sensors

Diamond, Dermot (2014) Smart Materials for Liquid and Micro-vehicle Movement Control in Microfluidics: The Key to Realising Next Generation Chemical Sensors. In: Invited Seminar, 6 Nov 2014, Eindhoven, Netherlands.

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Abstract

Autonomous chemical sensing platforms capable of operating independently for long periods of time (months, years) at an acceptable cost are not currently available, and it can be argued that the state of the art has not advanced significantly despite decades of intensive research. The key issue is how to maintain such devices within calibration, and to validate their calibration status remotely. New approaches to controlling sample and reagent movement in microchannels is could play a central role in the realisation of autonomous chemical sensing platforms with capabilities that go well beyond those of existing sensor technologies. In this lecture, I will discuss how photo-responsive molecules can be used to control liquid movement in microfluidic channels. In particular, I will show how tuning the composition and the porosity of NIPAAM-type gels incorporating spiropyran derivatives can produce dramatic improvements in critical characteristics of gel actuators such as re-swelling dynamics, extent of actuation and effective pH range. I will also discuss mechanisms by which photo-induced movement of micro-vehicles like droplets can be achieved in fluidic channels.

Item Type:Conference or Workshop Item (Invited Talk)
Event Type:Seminar
Refereed:No
Subjects:Physical Sciences > Analytical chemistry
Biological Sciences > Microfluidics
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Science and Health > School of Chemical Sciences
Research Initiatives and Centres > INSIGHT Centre for Data Analytics
Research Initiatives and Centres > National Centre for Sensor Research (NCSR)
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
Funders:Science Foundation Ireland, European Framework Programme 7, Enterprise Ireland
ID Code:20309
Deposited On:12 Nov 2014 11:31 by Dermot Diamond. Last Modified 12 Nov 2014 11:31

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