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Ion-beam-assisted fabrication and manipulation of Metallic nanowires

Rajput, N. S. and Tong, Z. and Verma, H. C. and Luo, X. (2015) Ion-beam-assisted fabrication and manipulation of Metallic nanowires. Micro and Nano Letters, 10 (7). pp. 334-338. ISSN 1750-0443

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Metallic nanowires (NWs) are the key performers for future micro/nanodevices. The controlled manoeuvring and integration of such nanoscale entities are essential requirements. Presented is a discussion of a fabrication approach that combines chemical etching and ion beam milling to fabricate metallic NWs. The shape modification of the metallic NWs using ion beam irradiation (bending towards the ion beam side) is investigated. The bending effect of the NWs is observed to be instantaneous and permanent. The ion beam-assisted shape manoeuvre of the metallic structures is studied in the light of ion-induced vacancy formation and reconfiguration of the damaged layers. The manipulation method can be used for fabricating structures of desired shapes and aligning structures at a large scale. The controlled bending method of the metallic NWs also provides an understanding of the strain formation process in nanoscale metals.