The effects of temperature and frequency on the dielectric properties, electromagnetic interference shielding and microwave-absorption of short carbon fiber/silica composites

Temperature dependent microwave attenuation behavior for carbon-nanotube/silica composites

Synthesis of zinc oxide particles coated multiwalled carbon nanotubes: Dielectric properties, electromagnetic interference shielding and microwave absorption

Influence of SiO2 fillers on microwave absorption properties of carbonyl iron/carbon black double-layer coatings

Development of “tuned microwave absorbers” using U-type hexaferrite

A simulation of the quasi-standing wave and generalized half-wave loss of electromagnetic wave in non-ideal media

Pb(Zr0.53, Ti0.47)O3 (PZT) films with thicknesses of 0.8μm, 2μm and 4μm are prepared by a sol-gel method and their longitudinal piezoelectric coefficients are analysed. The results show that the PZT thick films, whose density is closer to bulk PZT, has the better crystallization, with d33 and density much larger than those of PZT thin films. A piezoelectric microcantilever actuated by a 4-μm-thick PZT film is fabricated and its displacement is measured in different frequencies and voltages. The displacement increases linearly with the increasing bias, and the maximum displacement of 0.544 μm is observed at 30kHz for 5V bias. The resonant frequency obtained in the experiment matches quite well with the theoretical result, and it is shown that the resonant frequency of PZT microcantilever could be controlled and predicated.

https://iopscience.iop.org/article/10.1088/0256-307X/25/11/079/pdf

Yuan Jie

Papers

A simulation of the quasi-standing wave and generalized half-wave loss of electromagnetic wave in non-ideal media

Electromechanical Properties of Microcantilever Actuated by Enhanced Piezoelectric PZT Thick Film