Naslov
Determination of nanosized particles distribution by low frequency Raman scattering: Comparison to electron microscopy

Autori
Ivanda, Mile ; Tonejc, Anđelka ; Djerdj, Igor ; Gotić, Marijan ; Musić, Svetozar ; Mariotto, Gino ; Montagna, Maurizio

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Nanoscale spectroscopy and its applications to semiconductor research / Watanabe, Y. ; Heun, S. ; Salviati, G. ; Yamamoto, N. - Heidelberg : Springer, 2002, 16-27

Skup
International Workshop on Nanoscale Spectroscopy and its Applications to Semiconductor Research

Mjesto i datum
Trst, Italija, 10.2000

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
Ramanovo raspršenje; nanokristali; visoko rezolucijska transmisijska elektronska mikroskopija; distribucija čestica po veličini
(Raman scattering; nanocystals; high resolution TEM; particle size distribution)

Sažetak
The methodology for the determination of nanosized particle distribution by low frequency Raman spectroscopy is described. It is based on w-1 dependence of the Raman light to vibration coupling coefficient and on the fact that each nanocrystallite of diameter D vibrates with its eigen frequency w~1/D. The effect of the particle vibrational lifetime on the shape of distribution is analyzed and found to be negligible for the free TiO2 nanoparticles. The size distributions of TiO2 nanoparticles estimated by Raman spectroscopy was compared with those of transmission electron microscopy including dark field and high resolution imaging. The Raman spectroscopy showed to be simple, fast method that has favourable statistic over the macroscopic probe volume and makes possible ''in situ'' measurements.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemija

POVEZANOST RADA