Anomalous grazing incidence small-angle x-ray scattering studies of Pt nanoparticles formed by cluster deposition.

Conference · Sat Jan 01 00:00:00 EST 2005 · J. Chem. Phys.

DOI:https://doi.org/10.1063/1.1999627· OSTI ID:983745

Lee, B; Seifert, S; Riley, S J; Tikhonov, G Y; Tomczyk, N A; Vajda, S; Winans, R E

The size evolution of platinum nanoparticles formed on a SiO2/Si(111) substrate as a function of the level of surface coverage with deposited clusters has been investigated. The anisotropic shapes of sub-nanometer-size nanoparticles are changed to isotropic on the amorphous substrate as their sizes increased. Using anomalous grazing incidence small-angle x-ray scattering (AGISAXS), the scattering from nanoparticles on the surface of a substrate is well separated from that of surface roughness and fluorescence. We show that AGISAXS is a very effective method to subtract the background and can provide unbiased information about particle sizes of less than 1 nm.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC02-06CH11357
• OSTI ID: 983745
• Report Number(s): ANL/XFD/CP-116110; TRN: US1005364
• Journal Information: J. Chem. Phys., Vol. 123, Issue 2005; Conference: 3rd International Symposium of X-ray and Neutron Scattering on Integrated Molecular Systems; Jun. 27, 2005 - Jun. 29, 2005; Pohang, South Korea
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
DEPOSITION
FLUORESCENCE
FUNCTIONS
GRAZING
INFORMATION
LEVELS
NEUTRONS
PARTICLE SIZE
PLATINUM
ROUGHNESS
SCATTERING
SIZE
SUBSTRATES
SURFACES
WELLS