Hostname: page-component-cd9895bd7-7cvxr Total loading time: 0 Render date: 2024-12-28T04:23:35.767Z Has data issue: false hasContentIssue false
  • English
  • Français

Double Length-Scale Ordered Nanoporous Silica

Published online by Cambridge University Press:  02 July 2020

J.S. Yin  and
Z.L. Wang
J.S. Yin
Affiliation:
School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA30332
Z.L. Wang
Affiliation:
School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA30332
Get access

Extract

Ordered assembly of hollow structures of silica and carbon have drawn much attention recently because of their applications in low-loss dielectrics, catalysis, filtering and photonics. The structure is ordered on the length-scale of the template spheres and the pore sizes are in submicron to micron range. Alternatively, ordered porous silica with much smaller pore sizes in nanosize range (< 30 nm), produced deliberately by introducing surfactant, has also been processed, in which the porosity is created by co-polymers. In this research, a new silica nanostructure with double length-scale ordered porosities was processed, one being at the submicron scale of hollow spheres created by a template of polystyrene (PS), and the other at nano-scale created by self-assembled co-polymers.

Typical processing route includes three steps. Firstly, the ordered template of PS was created. The as-received PS with mean particle size of 203 nm was used as the raw material.

Type
Future of Microscopy: Ceramics, Composites, and Cement
Information
Microscopy and Microanalysis , Volume 5 , Issue S2: Proceedings: Microscopy & Microanalysis '99, Microscopy Society of America 57th Annual Meeting, Microbeam Analysis Society 33rd Annual Meeting, Portland, Oregon August 1-5, 1999 , August 1999 , pp. 818 - 819
Copyright
Copyright © Microscopy Society of America

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

[1] Kresge, C.T.et al., Nature 359 (1992) 710.CrossRefGoogle Scholar

[2] J.S., Yin and Z.L., Wang, Appl. Phys. Lett., 1999, submitted.Google Scholar

[3] Thanks to NSF DMR-9733160 for support and Dr.Xin, Y.B.for assistance during experiment.Google Scholar