Optical properties of self-assembled silica particles

Y. Tatara, H. Sato, Hiroyuki Nishikawa

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

2 Citations (Scopus)

Abstract

We investigated optical properties of mono-dispersed silica with diameters of several hundred nanometers. The mono-dispersed silica particles were formed by the Stober method from tetraethoxysilane (TEOS). Structures and impurities of the silica particles were studied by Fourier Transform Infrared (FT-IR) absorption. Impurities such as hydroxyls were removed by an anneal at temperatures more than 500 C. In addition, the peak position around 1100 cm-1 due to the Si-O bonds was changed to higher frequencies during the anneal. This suggests the structures such as Si-O-Si bond angles of mono-dispersed silica were modified during annealing. These silica particles were easily self-assembled on silicon substrates or glass. The states of the self-assembled structures were observed by an optical microscope, an atomic force microscope, and a scanning electron microscope. Two dimensional or three dimensional close-packed structures with were observed.

Original languageEnglish
Title of host publicationProceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials
Pages41-44
Number of pages4
Volume1
Publication statusPublished - 2003
EventProceedings of the 7th International Conference on Properties and Applications of Dielectric Materials - Nagoya
Duration: 2003 Jun 12003 Jun 5

Other

OtherProceedings of the 7th International Conference on Properties and Applications of Dielectric Materials
CityNagoya
Period03/6/103/6/5

Fingerprint

Silicon Dioxide
Optical properties
Silica
Microscopes
Impurities
Infrared absorption
Silicon
Hydroxyl Radical
Fourier transforms
Electron microscopes
Annealing
Scanning
Glass
Polymers
Substrates
Temperature

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

Cite this

Tatara, Y., Sato, H., & Nishikawa, H. (2003). Optical properties of self-assembled silica particles. In Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials (Vol. 1, pp. 41-44)

Optical properties of self-assembled silica particles. / Tatara, Y.; Sato, H.; Nishikawa, Hiroyuki.

Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials. Vol. 1 2003. p. 41-44.

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

Tatara, Y, Sato, H & Nishikawa, H 2003, Optical properties of self-assembled silica particles. in Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials. vol. 1, pp. 41-44, Proceedings of the 7th International Conference on Properties and Applications of Dielectric Materials, Nagoya, 03/6/1.
Tatara Y, Sato H, Nishikawa H. Optical properties of self-assembled silica particles. In Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials. Vol. 1. 2003. p. 41-44
Tatara, Y. ; Sato, H. ; Nishikawa, Hiroyuki. / Optical properties of self-assembled silica particles. Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials. Vol. 1 2003. pp. 41-44
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