Self-assembled fibre optoelectronics with discrete translational symmetry

Michael Rein, Etgar Levy, Alexander Gumennik, Ayman F. Abouraddy, John Joannopoulos and Yoel Fink ()
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Michael Rein: Massachusetts Institute of Technology
Etgar Levy: Research Laboratory of Electronics (RLE), Massachusetts Institute of Technology
Alexander Gumennik: Indiana University Bloomington
Ayman F. Abouraddy: Center for Research and Education in Optics and Lasers (CREOL), The College of Optics and Photonics, University of Central Florida
John Joannopoulos: Research Laboratory of Electronics (RLE), Massachusetts Institute of Technology
Yoel Fink: Massachusetts Institute of Technology

Nature Communications, 2016, vol. 7, issue 1, 1-8

Abstract: Abstract Fibres with electronic and photonic properties are essential building blocks for functional fabrics with system level attributes. The scalability of thermal fibre drawing approach offers access to large device quantities, while constraining the devices to be translational symmetric. Lifting this symmetry to create discrete devices in fibres will increase their utility. Here, we draw, from a macroscopic preform, fibres that have three parallel internal non-contacting continuous domains; a semiconducting glass between two conductors. We then heat the fibre and generate a capillary fluid instability, resulting in the selective transformation of the cylindrical semiconducting domain into discrete spheres while keeping the conductive domains unchanged. The cylindrical-to-spherical expansion bridges the continuous conducting domains to create ∼104 self-assembled, electrically contacted and entirely packaged discrete spherical devices per metre of fibre. The photodetection and Mie resonance dependent response are measured by illuminating the fibre while connecting its ends to an electrical readout.

Date: 2016
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DOI: 10.1038/ncomms12807

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