Nanowire flexible LEDs for optogenetics
Optogenetics is a technique developed over the last ten years to make genetically modified cells sensitive to light.
Over the past ten years, the biological side of optogenetics has seen massive progress, with the development of hundreds
of opsins and model systems. However, much less effort has been invested in the light source: for in-vivo implantation,
light emitters with high spatial resolution are needed, as well as compact devices that can be brought as close as possible
to the target without damaging tissue. The project aims to produce arrays of microLEDs using GaN nanowire-based nanostructures.
The geometry of these nanostructures makes them particularly well-suited to the production of flexible LEDs.
These nanowires are produced at the CRHEA by localized growth using organometallic vapor-phase epitaxy. This growth method
produces InGaN/GaN core-shell LED structures of highly homogeneous size. The nanostructures are then embedded in a PDMS membrane
and peel-off transferred onto a flexible substrate before the metal contacts are established.
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