Barium titanate and cobalt ferrite nano-particles decorated SICN/MWCNT nanotubes: Synthesis and microstructural characterization

Vishwas Bedekar, Gurpreet Singh, Roop Mahajan, Shashank Priya

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In order to realize self-powered health monitoring and magnetic field sensors, bottom - up design of nanoscale device was investigated. A MWCNT/SiCN nanotube template was developed that has the potential to act as piezoresistive element. Next, a novel nanotube morphology was synthesized that consists of BaTiO3 (BTO) nanoparticles decorated along the surface of SiCN. Monolayer coating of SiCN on MWCNT serves two purposes: (i) modifies the surface wetting characteristics, and (ii) enhances the piezoresistive effect. Investigation of the mechanisms that provide periodic arrangement of BTO on nanotube surface was conducted using HRTEM and contact angle measurements. X-ray Photoelectron Spectroscopy was performed to confirm perovskite phase of BTO. The SiCN/MWCNT approach was further extended to fabricate magnetoelectric nanowire based sensors designs. In this approach a SiCN-NT template was coated with BTO and CoFe2O4 (CFO) nanoparticles. Microstructural studies indicated the presence of piezoelectric (BTO) as well as magnetic (CFO) material on the nanotube surface. Further, studies are required to overcome the problem of electrical contact on a MEMS chip.

Original languageEnglish (US)
Title of host publicationAdvances in Electroceramic Materials II
PublisherAmerican Ceramic Society
Pages19-28
Number of pages10
ISBN (Print)9780470927168
DOIs
StatePublished - 2010
Externally publishedYes

Publication series

NameCeramic Transactions
Volume221
ISSN (Print)1042-1122

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