AI Article Synopsis
- Luminescent nanoparticles (NPs) are applied to 2D TiO2 nanomembranes through spin-coating, then rolled into 3D microtube structures.
- These NPs act as a light source for optical resonances when excited by a laser, enabling the TiO2 microtube to function as an active microcavity.
- The resonant modes’ spectral range can be adjusted from visible to near-infrared by varying the NPs, opening new possibilities in fields like bio-nanophotonics and optoelectronics.
Article Abstract
Luminescent nanoparticles (NPs) are deposited onto two dimensional (2D) pre-strained TiO2 nanomembranes by spin-coating. After rolling up the 2D differentially strained TiO2 nanomembranes into 3D microtube structures, the NPs are embedded within the tube windings. The embedded NPs serve as a light source for optical whispering-gallery-mode resonances under laser excitation, and therefore allow the TiO2 microtube to work as an active microcavity operating in emission mode. The spectral range of resonant modes can be tuned from the visible to the near infrared by embedding the proper NPs in the TiO2 tube wall. Rolled-up TiO2 microcavities combined with luminescent NPs could offer interesting opportunities in a variety of research fields, such as bio- and nanophotonics, optoelectronics, and optofluidics.
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| http://dx.doi.org/10.1039/c5nr08979d | DOI Listing |
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