Figure 2: A series of CL spectra of a 1.6-μm ZnO fiber in a tensile-bending process at 85 K. | Scientific Reports

Figure 2: A series of CL spectra of a 1.6-μm ZnO fiber in a tensile-bending process at 85 K.

From: Strain Gradient Modulated Exciton Evolution and Emission in ZnO Fibers

Figure 2

(a) A SE image of the fiber under tensile strain. The white square is the position of the bending loading after the fiber had broken. (b) CL spectra of the fiber under tensile strains of εcT = 0∼1.48%. (c) Three SE images of the bent fiber with different curvatures. The white circles are the collection sites of the CL spectra. (d) CL spectra of the same sites on the bent fiber under strain gradients of g = 2.8, 2.1, and 1.25% μm−1 (matched to the sites of C, C2, C3 in a,b), and CL spectra of different sites on the bent fiber under different strain gradients of g = 0.6∼2.8% μm−1 (matched to the sites of A-E in b).

Back to article page