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Download fileConformable Nanowire-in-Nanofiber Hybrids for Low-Threshold Optical Gain in the Ultraviolet
journal contribution
posted on 2020-05-18, 09:43 authored by Alberto Portone, Rocio Borrego-Varillas, Lucia Ganzer, Riccardo Di Corato, Antonio Qualtieri, Luana Persano, Andrea Camposeo, Giulio Cerullo, Dario PisignanoThe
miniaturization of diagnostic devices that exploit optical
detection schemes requires the design of light sources combining small
size, high performance for effective excitation of chromophores, and
mechanical flexibility for easy coupling to components with complex
and nonplanar shapes. Here, ZnO nanowire-in-fiber hybrids with internal
architectural order are introduced, exhibiting a combination of polarized
stimulated emission, low propagation losses of light modes, and structural
flexibility. Ultrafast transient absorption experiments on the electrospun
material show optical gain which gives rise to amplified spontaneous
emission with a threshold lower than the value found in films. These
systems are highly flexible and can conveniently conform to curved
surfaces, which makes them appealing active elements for various device
platforms, such as bendable lasers, optical networks, and sensors,
as well as for application in bioimaging, photo-cross-linking, and
optogenetics.
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applicationdetection schemescombinationsurfacenonplanar shapesflexibilityelectrospun material showthresholdfilmlight sourcespropagation lossesUltravioletlight modesperformancesensorexcitationchromophorecomponentemissionbioimagingabsorption experimentsphoto-cross-linkinggainUltrafastConformable Nanowire-in-Nanofiber HybridsZnO nanowire-in-fiber hybridsoptogeneticminiaturizationLow-Threshold Optical Gainbendable lasersdevice platforms