Depth distribution of silver particulate films deposited in softened polystyrene substrates studied through Rutherford backscattering spectrometry
- Department of Chemistry, Durham University, Science Site, Durham, DH1 3LE (United Kingdom)
- Materials Science Department, Mangalore University, Managalagangotri, 574 199 (India)
The depth distribution of silver particulate films deposited on softened polystyrene substrates has been studied through Rutherford backscattering spectrometry (RBS). 150 nm thick silver films were deposited on polystyrene (PS) coated glass substrates held at 455 K and 490 K in a vacuum of 8 x 10{sup -6} Torr. The substrates were irradiated with 8 MeV electrons to a dose of 25 kGy prior to deposition. Ion scattering measurements indicated that the silver particulates are formed at a few tens of nanometers beneath the PS surface for both unirradiated and irradiated substrates. The particulate structure seems to be a two-dimensional array rather than a three-dimensional distribution. The morphology of the particulate structure, the depth of maximum concentration of the particles as well as the width of the distribution seems to depend on the deposition rate and substrate temperature. The electron irradiation of the PS substrate gives rise to the modification of the morphology of the particulate structure due to the induced polymer-metal interaction arising from the free radicals created by the irradiation.
- OSTI ID:
- 22036696
- Journal Information:
- Journal of Applied Physics, Vol. 110, Issue 4; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
DEPOSITION
ELECTRON BEAMS
GLASS
IRRADIATION
MEV RANGE
MODIFICATIONS
MORPHOLOGY
PARTICULATES
POLYSTYRENE
RADIATION EFFECTS
RADICALS
RUTHERFORD BACKSCATTERING SPECTROSCOPY
SILVER
SPATIAL DISTRIBUTION
SUBSTRATES
SURFACES
THIN FILMS
THREE-DIMENSIONAL CALCULATIONS
TWO-DIMENSIONAL CALCULATIONS