Figure 4 | Scientific Reports

Figure 4

From: Experimental evidence of a size-dependent sign change of the Seebeck coefficient of Bi nanowire arrays

Figure 4

Seebeck coefficients of Bi nanowire arrays prepared (a) at 22°C and (b) at 40 °C as a function of temperature. Lines between data points serve as a guide-to-the-eye. (c) Seebeck coefficient as a function of nanowire diameter at 300 K (black squares and green triangles) and at 60 K (red circles and blue diamonds) ambient temperature. (d) Transition temperature (negative to positive S) as a function of wire diameter. The graph also contains theoretical values taken from the work of Murata et al. (green)41,45.

Back to article page