Four-dimensional photonic micro-actuators for microfluidics applications

Marc del Pozo, Colm Delaney, Cees W.M. Bastiaansen, Dermot Diamond, Albert P.H.J. Schenning, Larisa Florea

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

With the advent of two-photon polymerization direct laser writing (TPP-DLW) the generation of high resolution three-dimensional (3D) microstructures with arbitrary shapes has increased dramatically. However, the fabrication of stimuli-responsive photoresists, essentially creating four-dimensional (4D) microstructures, remains a significant challenge. Herein, we present a supramolecular cholesteric liquid crystalline (CLC) photonic-photoresist for the fabrication of 4D photonic micro-actuators with sub-micron resolution. These structures display structural color and shape changes which are triggered by variation of humidity and/or temperature. These results embody the advantages of merging self-ordering systems with TPP-DLW to fabricate novel dual-responsive microstructures which hold potential for the development of micro-robots or as sensing elements in microfluidic devices.

Original languageEnglish
Title of host publicationMicroTAS 2020 - 24th International Conference on Miniaturized Systems for Chemistry and Life Sciences
PublisherChemical and Biological Microsystems Society
Pages346-347
Number of pages2
ISBN (Electronic)9781733419017
Publication statusPublished - 4 Oct 2020
Event24th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2020 - Virtual, Online
Duration: 4 Oct 20209 Oct 2020

Conference

Conference24th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2020
CityVirtual, Online
Period4/10/209/10/20

Keywords

  • 4D photonic micro-actuators
  • Cholesteric liquid crystal networks
  • Direct laser writing
  • Dynamic structural color
  • Photonic-photoresist
  • Two-photon polymerization

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