Evaluation of diameter effects of individual coaxial SiC/SiO₂ nanowires on their acoustic parameters
by Linda Achou; Abdellaziz Doghmane; Yahya Al-Sayad; Kahina Ammiali; Zahia Hadjoub
International Journal of Nanoparticles (IJNP), Vol. 6, No. 2/3, 2013

Abstract: Recent interest in investigations of mechanical, elastic, electronic, optical and transport properties of the silicon carbide/silica (SiC/SiO₂) core/shell nanowires (CSNWs) is due to the importance of their integration into several nanoscale devices used in all modern nanotechnological fields. In this context, the diameter effects, 51 nm ≤ Dwire ≤ 190 nm, of individual SiC/SiO₂ coaxial CSNWs on their acoustic parameters have been investigated using a simulation program based on acoustic microscopy technique. Thus, we determined the effects of wire diameters on reflection coefficients, acoustic materials signatures, velocities, critical excitation angles as well as acoustic impedances of longitudinal, transverse and Rayleigh modes. Calculation and quantification of the results led to the determination of different relations describing the polynomial variation of acoustic parameters as a function of size. To enrich this investigation, a comparison with elastic parameters of both bulk pure SiO₂ and SiC were also computed. The importance of the above deduced formulas lies in the direct determination of desired elastic properties of such nanomaterials by just knowing their diameters and vice versa.

Online publication date: Mon, 31-Mar-2014

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Nanoparticles (IJNP):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com