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Title: Influence of the nanoparticles agglomeration state in the quantum-confinement effects: Experimental evidences

The agglomeration state facilitates particle-particle interaction which produces important effects in the phonon confinement effects at the nanoscale. A partial phonon transmission between close nanoparticles yields a lower momentum conservation relaxation than in a single isolated nanoparticle. It means a larger red shift and broadening of the Raman modes than the expected ones for Raman quantum confinement effects. This particle-particle interaction can drive to error when Raman responses are used to estimate the size of the nanoscaled materials. In this work different corrections are suggested to overtake this source of error.
Authors:
 [1] ;  [2] ; ;  [1]
  1. Electroceramic Department, Instituto de CerĂ¡mica y Vidrio, CSIC, Kelsen 5, 28049, Madrid (Spain)
  2. (Germany)
Publication Date:
OSTI Identifier:
22454466
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Advances; Journal Volume: 5; Journal Issue: 3; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; AGGLOMERATION; NANOPARTICLES; NANOSTRUCTURES; PARTICLE INTERACTIONS; PHONONS