3D Nano Capacitors Using Electrodeposited Nickel Nanowires in Porous Anodic Alumina Template

Viegas, Alison E.; Dutta, Sudipta; Rekha, S.; Bobji, M. S.; Raghavan, Srinivasan; Bhat, Navakanta

doi:10.1007/978-3-319-97604-4_90

Cited by 2 publications

(1 citation statement)

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“…Nanowires and nanotubes are promising materials for futuristic devices due to their exceptional electronic, magnetic, optoelectronic, and mechanical properties . The nanowires impregnated inside porous templates have potential applications such as magnetic storage materials, charge storage nanocapacitors, optoelectronic devices, magnetic sensors, high-frequency switches, logic devices, microwave devices, spin waveguides, spin pumping aides, high hardness coating materials for tribological applications, and so forth. − Muthukumar et al observed friction and wear behavior of nanocomposite coatings where copper nanorods are impregnated in ordered nanoporous alumina (NPA). Improved wear resistance is observed for NPA with copper phase compared to NPA during dry reciprocating friction test.…”

Section: Introductionmentioning

confidence: 99%

High-Resolution Scanning Electron Microscopy Imaging to Understand the Growth Kinetics of Nickel Nanorods

2023

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In the present work, the growth kinetics of nickel nanorods inside commercially available Whatman nanoporous membrane is explored to achieve uniform deposition over a large area of the membrane. Uniform electrodeposition inside nanopores requires continuous presence of solute ions near the deposition site and reduction of ions. To control ion diffusion and reduction near the deposition site, the effect of DC potential and pulsed potential with various duty cycles and solution temperatures is analyzed. Time-dependent variation in deposition current is recorded for all experiments. For different experimental conditions, high-resolution scanning electron microscopy (SEM) image is acquired. SEM along with the current density profile helped to understand the deposition mechanism for various growth conditions. Experiments confirmed that pulse deposition with a small duty cycle is promising to achieve uniform deposition. Also, by changing the pulse duty cycle, a sectioned nanostructure can be obtained. Based on the electron microscopic observation for various deposition conditions used in this work, it is concluded that initially nickel ions adhere to the pore surfaces due to high surface energy. When a potential is applied, ions reduce and a hollow nanotube structure forms. With time, concentric growth continues by forming a solid nanorod structure.

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