Equilibrating Nanoparticle Monolayers Using Wetting Films

Journal Article · Thu Jan 01 00:00:00 EST 2009 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.102.016101· OSTI ID:980197

Pontoni, D; Alvine, K; Checco, A; Gang, O; Ocko, B; Pershan, P

Monolayers of bimodal gold nanoparticles on silicon are investigated by a combination of microscopy (dry monolayers) and x-ray diffraction (dry and wet monolayers). In the presence of an excess of small particles, the nanoscale packing structure closely resembles the small-particle-rich scenario of the structural crossover transition that has been predicted and also observed with micron-scale hard-sphere colloids. Structural morphology is monitored in situ during monolayer dissolution and reassembly within the thin liquid wetting film. This approach allows investigation of size and solvent effects on nanoparticles in quasi-two-dimensional confinement.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source
• Sponsoring Organization: Doe - Office Of Science
• DOE Contract Number: DE-AC02-98CH10886
• OSTI ID: 980197
• Report Number(s): BNL-93115-2010-JA; PRLTAO; TRN: US201015%%1582
• Journal Information: Physical Review Letters, Vol. 102; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
COLLOIDS
CONFINEMENT
DISSOLUTION
GOLD
MICROSCOPY
MORPHOLOGY
SILICON
SOLVENTS
X-RAY DIFFRACTION
LAYERS
FILMS
WETTING AGENTS
national synchrotron light source