Color tunable pressure sensors based on polymer nanostructured membranes for optofluidic applications.

ABSTRACT: We demonstrate an integrated optical pressure sensing platform for multiplexed optofluidics applications. The sensing platform consists in an array of elastomeric on-side nanostructured membranes -effectively 2D photonic crystal- which present colour shifts in response to mechanical stress that alter their nanostructure characteristical dimensions, pitch or orientation. The photonic membranes are prepared by a simple and cost-effective method based on the infiltration of a 2D colloidal photonic crystal (CPC) with PDMS and their integration with a microfluidic system. We explore the changes in the white light diffraction produced by the nanostructured membranes when varying the pneumatic pressure in the microfluidics channels as a way to achieve a power-free array of pressure sensors that c

SUBMITTER: Escudero P 

PROVIDER: S-EPMC6397196 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature