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(Color online) (a) Photograph of as-grown AgNWs. (b) SEM image of a bundle of AgNWs separated from the sample in Fig. 1(a) . (c) XRD pattern of AgNWs. (d) TEM image of the ultrasonically dispersed AgNWs. [(e) and (f)] TEM images of a typical dichotomous structure of nanowires and an individual straight nanowire, respectively. The inset in Fig. 1(f) is the EDS pattern of a straight AgNW. and are the transitions responsible for the x-ray fluorescence lines of Ag. (g) HRTEM image of the straight AgNW at the atomic resolution. The inset is a fast Fourier transform of a region, as shown in Fig. 1(g) . (h) SAED pattern recorded along a  zone axis.
(a) Illustration of the setup. (b) Thermoinduced voltage as a function of temperature . Inset: characteristic of AgNWs connected between two bulk Ag electrodes without a temperature difference.
(Color online) (a) Photoinduced voltage as a function of the irradiating position when the AgNWs were irradiated with a laser. Upper inset: Illustration of the setup. Bottom inset: as a function of the laser power . The solid line is linearly fitted to the corresponding data. [(b) and (c)] Photoelectric responses when was irradiated by and lasers, respectively.
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