AI Article Synopsis
- Scientists used special tools to study how bending tiny wires made of zinc oxide (ZnO) affects their light properties.
- They found that bending these wires causes them to stretch, which changes how they interact with light and might make it easier for the wires to conduct electricity.
- This research helps us understand how changing the shape of these tiny structures can change their electrical and optical abilities.
Article Abstract
Using confocal micro-Raman and photoluminescence spectroscopy, we studied bending effects on optical properties of individual ZnO nanowires. Raman spectroscopy shows that local tensile strain can be introduced by bending the nanowire. The strain is expected to reduce the band gap on the bent part and modify the local phonon-exciton interaction. The corresponding micro-photoluminescence spectra indicate local suppression of the longitudinal-optical (LO) phonon-exciton interaction, which is determined by the intensity ratio of the second-order LO-phonon replica of the free exciton (FX-2LO) to the first-order process (FX-1LO). Our results may provide insight into the modulation of local electrical and optical properties by deforming the nanostructures.
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| http://dx.doi.org/10.1088/0957-4484/21/44/445706 | DOI Listing |
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