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Title: Real time monitoring of superparamagnetic nanoparticle self-assembly on surfaces of magnetic recording media

Nanoparticle self-assembly dynamics are monitored in real-time by detecting optical diffraction from an all-nanoparticle grating as it self-assembles on a grating pattern recorded on a magnetic medium. The diffraction efficiency strongly depends on concentration, pH, and colloidal stability of nanoparticle suspensions, demonstrating the nanoparticle self-assembly process is highly tunable. This metrology could provide an alternative for detecting nanoparticle properties such as colloidal stability.
Authors:
; ;  [1] ; ; ;  [2] ;  [3]
  1. Department of Physics and Astronomy, University of South Carolina, 712 Main Street, Columbia, South Carolina 29208 (United States)
  2. Department of Materials Science and Engineering, Clemson University, 161 Sirrine Hall, Clemson, South Carolina 29634 (United States)
  3. (COMSET), 91 Technology Dr., Anderson, South Carolina 29625 (United States)
Publication Date:
OSTI Identifier:
22273831
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 17; Conference: 55. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 14-18 Nov 2010; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; 36 MATERIALS SCIENCE; COLLOIDS; CONCENTRATION RATIO; DIFFRACTION; MAGNETIC MATERIALS; MONITORING; NANOSTRUCTURES; PARTICLE SIZE; PARTICLES; PH VALUE; PHASE STABILITY; SUPERPARAMAGNETISM; SURFACES; SUSPENSIONS