Electromagnetic Properties of Microcoils Fabricated from Self-Bending Coated-Nanowires via Viscous Flow of Core Material
Helical micro/nanostructures such as micro/nanocoils are attractive materials because of their applicability to small inductance-based sensors and actuators, as well as small springs. We have developed a method for realizing helical formation of coated nanowires (NWs) by utilizing the viscous flow of the core material (VFCM), i.e., the NWs, and the misfit strain of the coating film. In this study, we evaluated the electromagnetic properties of a microcoil fabricated from a Pt-coated CuO NW by using the VFCM method. The voltage versus current values for the microcoil were evaluated by performing a current test. Direct current was supplied to the coil connected with Au electrodes, and the voltage corresponding to the electrical current was measured using a four-point probe method. The magnetic field at the allowable current flow in the coil was also predicted. The results of the current test showed that the coil could generate 1.01 × 10–4 T of magnetic flux density at 500 μA and the inductance of the coil was estimated to be 5.3 pH. Further, the coil had low resistivity on the scale of 10–4 Ω · cm.
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Document Type: Short Communication
Publication date: July 1, 2014
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- Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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