Interaction of long wavelength photons with fractal aggregates

Galyamov, B. Sh.; Lushnikov, A.A.; Maximenko, V.V.; Negin, A. E.; Yablokov, M. Yu.

doi:10.1016/0021-8502(96)00348-5

Cited by 4 publications

(1 citation statement)

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“…20 Also, early theoretical study showed that the incident light might be resonantly trapped by the hollows distributed over the volume of aggregate and the nanoparticles comprising aggregate are able to renormalize the light wavelength making each hollow an effective resonance trap. 21 Thus, we can expect that hollow structure likely contributed to the attenuation of light, though it is hard to separate the effects from others that may be relevant, such as particle size and formation of agglomerates.…”

Section: Optical Propertiesmentioning

confidence: 99%

Formation of TiO<sub>2</sub> Hollow Nanoparticles via Gas Phase Synthesis using Titanium Oxide Acetylacetonate as a Precursor

Lee

2006

J. Ceram. Soc. Japan

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TiO 2 nanoparticles were synthesized by chemical vapor condensation CVC using titanium oxide acetylacetonate as a precursor in the temperature range of 800-1000? C. TEM observation revealed that TiO 2 nanoparticles 10-40 nm in diameter consisted of a hollow structure with shells 4-5 nm in thickness. From XRD results, it was found that TiO 2 nanopowders obtained at all temperatures consisted of a two-phase rutile and anatase mixture. The sequential decomposition of the metal acetylacetonate precursor observed in thermogravimetry TG analysis showed that formation of the hollow structure depends on the characteristics of the metalorganic precursor. In addition, it was found that the transmittance of TiO 2 hollow nanoparticles is lower than that of commercial nanopowders in the wavelength range of 400-800 nm by UV-visible spectrophotometry. However, the band gap energy of the TiO 2 hollow nanoparticles at about 3.0 eV is unchanged from other forms of TiO 2 .

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Section: Optical Propertiesmentioning

confidence: 99%