Diameter-depended thermal expansion properties of Bi nanowire arrays

Abstract

The lattice parameter of bismuth nanowires has been measured using the in situ high-temperature x-ray diffraction method. Single-crystalline Bi nanowire arrays with the diameters from 10nmto250nm have been fabricated within the porous anodic alumina membranes by a pulsed electrodeposition technique. Different temperature dependencies of lattice parameter and thermal expansion coefficient were found for Bi nanowires with different diameters, and there is a transition from positive thermal expansion coefficient at low temperature to negative one at high temperature, and the transition temperature shifts to high temperature with the increase in the diameter of Bi nanowires.

Thermal expansion behaviors of hcp and fcc Co nanowire arrays

“…Up to now, some works [7][8][9][10][11][12] have been reported about the thermal expansion behaviors of metallic nanowires using in situ high-temperature x-ray diffraction (XRD). The thermal expansion behaviors Bi nanowires [9] and Ag nanowires [11] have been found to depend on their diameters. To our best knowledge, however, it is never reported that the thermal expansion for the different crystal structures of nanowires with the same diameter.…”

Growth of well-aligned Bi nanowire on Ag(111)

“…In addition, Bi nanowires are potentially highefficiency thermoelectric materials due to the enhanced thermoelectric coefficient originating from the quantum confinement effect [13,14]. In recent years, much work has been done to fabricate 1D Bi nanostructures with controlled dimensions and crystalline structures using electrodeposition aided with anodic alumina membranes (AAM) [15][16][17] and vapor phase deposition [18][19][20].…”

Convenient synthesis of silver nanowires with adjustable diameters via a solvothermal method

“…1-D metallic nanostructures (rods, wires, belts, and tubes) have been extensively explored due to their unique electrical, optical, magnetic, and thermal properties, as well as their interesting applications in microelectronics and biological devices [1][2][3][4][5][6]. Among the metals, silver nanowires have garnered a significant amount of research attention because of their high electrical and thermal conductivities [7][8][9].…”