imaging; Light-trapping; Fiber processing; optoelectronic devices; Multi-material fibers; Nanowire processing
Yan Wei, Richard Inès, Kurtuldu Güven, James Nicholas D., Schiavone Giuseppe, Squair Jordan W., Nguyen‐Dang Tung, Das Gupta Tapajyoti, Qu Yunpeng, Cao Jake D., Ignatans Reinis, Lacour Stéphanie P., Tileli Vasiliki, Courtine Grégoire, Löffler Jörg F., Sorin Fabien (2020), Structured nanoscale metallic glass fibres with extreme aspect ratios, in Nature Nanotechnology
, 15(10), 875-882.
Shadman Shahrzad, Nguyen-Dang Tung, Gupta Tapajyoti Das, Page Alexis Gérald, Richard Inès, Leber Andreas, Ruza Jurgis, Krishnamani Govind, Sorin Fabien (2020), Microstructured Biodegradable Fibers for Advanced Control Delivery, in Advanced Functional Materials
Yan Wei, Page Alexis, Nguyen-Dang Tung, Qu Yunpeng, Sordo Federica, Wei Lei, Sorin Fabien (2019), Advanced Multimaterial Electronic and Optoelectronic Fibers and Textiles, in Advanced Materials
, 31(1), 1802348-1802348.
Dang Tung Nguyen, Richard Inès, Goy Etienne, Sordo Federica, Sorin Fabien (2019), Insights into the fabrication of sub-100 nm textured thermally drawn fibers, in Journal of Applied Physics
, 125(17), 175301-175301.
The ability to impart novel functionalities to thin and flexible fibers beyond optical transport or thermal insulation holds great promises in several scientific and technological fields. In an ongoing Swiss National Science Foundation project, we have proposed and demonstrated how to use the thermal drawing process - the same process used to fabricate optical fibers - to realize state-of-the-art optoelectronic fibers. These hybrid fibers integrate materials and architectures that enable both optical and electrical transport, as well as responsiveness to various stimuli (e.g. light, heat, or chemicals) via electrically addressed semiconducting domains integrated along the entire fiber length (potentially tens of kilometers). Thanks to the support of the SNF we have been able to demonstrate, for the first time, the growth of single crystal semiconducting nanowires in contact with conducting materials, onto and within optical fibers. The resulting long, thin, flexible fiber devices exhibit photodetecting performance an order of magnitude better than previous state-of-the-art. In this proposal, we want to build on these exciting results and propose to develop a deeper understanding of the electrical and optical properties of the in-fiber grown nanowire mesh, and how they relate to the fabrication process. This will enable us to improve further single crystal nanowire based devices and to realize flexible photodetecting fibers with sensitivities on par with conventional planar photoconductors. These innovative research directions can lead to the simple and scalable fabrication of novel optical fibers and meta-materials, of advanced optical probes for surgical tools or to interface with biological tissues, and of fiber-integrated imaging systems. Also, such advanced fibers can be assembled into various meshes, screens, artificial skins or textile configurations, capable of sensing various stimuli. It also paves the way towards making fibers and fabrics capable of harnessing different forms of energy. All of these applications can have a significant impact in crucial areas for the Swiss scientific and technological landscape, such as health care, renewable energy, or advanced high-tech textiles.