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Photonic Needles for Light Delivery in Deep Tissue-like Media #MMPMID28717142
Fain R; Barbosa F; Cardenas J; Lipson M
Sci Rep 2017[]; 7 (ä): ä PMID28717142show ga
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??m 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.