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Photonic Needles for Light Delivery in Deep Tissue-like Media.


ABSTRACT: We demonstrate a new platform for minimally invasive, light delivery probes leveraging the maturing field of silicon photonics, enabling massively parallel fabrication of photonic structures. These Photonic Needles probes have sub-10 μm cross-sectional dimensions, lengths greater than 3 mm-surpassing 1000 to 1 aspect ratio, and are released completely into air without a substrate below. We show the Photonic Needles to be mechanically robust when inserted into 2% agarose. The propagation loss of these waveguides is low-on the order of 4 dB/cm.

SUBMITTER: Fain R 

PROVIDER: S-EPMC5514084 | biostudies-other | 2017 Jul

REPOSITORIES: biostudies-other

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