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Temperature-dependent polymer absorber as a switchable state NIR reactor

Alston, Mark E.; Barber, Robert

Temperature-dependent polymer absorber as a switchable state NIR reactor Thumbnail


Assistant Professor in Environmental Design

Robert Barber


This research studies a lower down transition temperature composite polymer, modulated by multi microchannel fluidic flows to advance a thermally controllable material. Through modulating volumetric flow rates to manipulate fluid-material interface for heat transport within a microfluidic platform. Determining this optimization at any given flow rate will advance fluidics acting as a filter for invisible irradiation, near IR (NIR) range of the electromagnetic spectrum. In principle, filtering out this part of the solar irradiation spectrum can be achieved by selective fluidic absorption. By switchable control of conductance states to make the material switch on for high conductance or switch off for low conductance as a heat seeking targeting material. The challenges in material science is our ability to evaluate heat flow and monitor temperature with time. This research will determine the use of microfluidics based flows to direct the structural assembly of a polymer into a thermal switch. The research is inspired by nature’s vasculature leaf formations to modulate irradiance absorption by laminar fluidic flow. This bio-inspired engineering approach advances the structural assembly of polymers. By finely tuning flows to manipulate thermal gains in microchannel network architecture through flow rate switching to define composite function in differing conductance states. The research determines control of the thermodynamic state of a composite is directed by planar extensional flow in a microfluidic platform for high cooling surfaces.


Alston, M. E., & Barber, R. (2018). Temperature-dependent polymer absorber as a switchable state NIR reactor. Scientific Reports, 8(1), Article 15866.

Journal Article Type Article
Acceptance Date Oct 1, 2018
Online Publication Date Oct 26, 2018
Publication Date Dec 30, 2018
Deposit Date Oct 31, 2018
Publicly Available Date Oct 31, 2018
Journal Scientific Reports
Electronic ISSN 2045-2322
Publisher Nature Publishing Group
Peer Reviewed Peer Reviewed
Volume 8
Issue 1
Article Number 15866
Keywords Multidisciplinary
Public URL
Publisher URL


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