Abstract
Understanding and controlling structural properties of the materials are crucial in materials research. In this paper, we report that crystallinity and crystallographic orientation of Pd nanowires can be tailored by varying the fabrication conditions during electrochemical deposition in polycarbonate ion-track templates. By changing the deposition temperature during the fabrication process, the nanowires with both single- and poly-crystallinities were obtained. The wires with preferred crystallographic orientations along [111], [100], and [110] directions were achieved via adjusting the applied voltage and temperature during electrochemical deposition.
Highlights
Nanowire-based devices have been highly pursued for decades stimulated by their rapid expanding impact in nanotechnology
Our results demonstrate that the Pd nanowires’ crystallinity and crystallographic orientation can be controlled by appropriately adjusting the fabrication conditions during the electrochemical deposition of the nanowires
For preparation of these nanowires, the applied voltage and deposition temperature were chosen as 0.8 V and 21 °C, respectively
Summary
Nanowire-based devices have been highly pursued for decades stimulated by their rapid expanding impact in nanotechnology. Metallic nanowires are interesting for fundamental research due to their unique structural and physicochemical properties compared to their bulk counterparts and offer a fascinating potential for the future technological applications [1]. It is widely accepted that the performance of a given material is affected by its intrinsic properties and influenced by the structural characteristics such as crystallinity and crystallographic orientation [2, 3]. The hardness and yield stress of nanocrystalline materials typically increase with decreasing grain size, a phenomenon known as the Hall– Petch effect [5, 6]. In the case of very small grain sizes, the nanocrystalline copper becomes soft because of the plastic deformation originating from a large
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