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Light-Patterned Current Generation in a Droplet Bilayer Array.

ABSTRACT: We have created a 4?×?4 droplet bilayer array comprising light-activatable aqueous droplet bio-pixels. Aqueous droplets containing bacteriorhodopsin (bR), a light-driven proton pump, were arranged on a common hydrogel surface in lipid-containing oil. A separate lipid bilayer formed at the interface between each droplet and the hydrogel; each bilayer then incorporated bR. Electrodes in each droplet simultaneously measured the light-driven proton-pumping activities of each bio-pixel. The 4?×?4 array derived by this bottom-up synthetic biology approach can detect grey-scale images and patterns of light moving across the device, which are transduced as electrical current generated in each bio-pixel. We propose that synthetic biological light-activatable arrays, produced with soft materials, might be interfaced with living tissues to stimulate neuronal pathways.

SUBMITTER: Restrepo Schild V

PROVIDER: S-EPMC5394532 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature

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Light-Patterned Current Generation in a Droplet Bilayer Array.

Restrepo Schild Vanessa V Booth Michael J MJ Box Stuart J SJ Olof Sam N SN Mahendran Kozhinjampara R KR Bayley Hagan H

Scientific reports 20170418

We have created a 4 × 4 droplet bilayer array comprising light-activatable aqueous droplet bio-pixels. Aqueous droplets containing bacteriorhodopsin (bR), a light-driven proton pump, were arranged on a common hydrogel surface in lipid-containing oil. A separate lipid bilayer formed at the interface between each droplet and the hydrogel; each bilayer then incorporated bR. Electrodes in each droplet simultaneously measured the light-driven proton-pumping activities of each bio-pixel. The 4 × 4 arr ...[more]

PMID: 28417964

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