Silver colloids and silver island films as fluorescence enhancement systems are the subject of this paper. Enhancement of fluorescence of molecules placed near metallic nanoparticles is a result of resonance interaction of exciting and emitted lights with surface plasmons. Two models explaining this phenomenon are presented. Processes of silver colloids and silver island films forming are descr...

The diffusion and coarsening of two-dimensional homoepitaxial islands on Cu(100) and Ag(100) surfaces have been studied at room temperature with time-sequenced scanning tunneling microscopy. Quantitative analyses of the dependence of island diffusion coefficient D vs the island side length L, D ~ L , yield noninteger scaling exponents which are consistent with island coalescence. Moreover, the ...

Detailed kinetic Monte Carlo–molecular dynamics ~KMC-MD! simulations of hyperthermal energy ~10– 100 eV! copper homoepitaxy reveal a reentrant layer-by-layer growth mode at low temperatures ~50 K! and reasonable fluxes ~1 ML/s. where ML stands for monolayer!. This growth mode is the result of atoms with hyperthermal kinetic energies becoming inserted into islands when the impact site is near a ...

The traditional consideration of architectural history as a linear process, where one style successively replaces another, still dominates, but does not explain many phenomena. V.S. Goryunov substantiated fundamentally different, non-linear model the historical process in architecture on basis 19th – early 20th centuries. V. S. and M. P. Tubli proposed stylistic polyphony with introduction conc...

background: agriculture is an important sector for the malaysian economy. the use of pesticides in agriculture is crucial due to its function in keeping the crops from harmful insects. children living near agricultural fields are at risk of pesticide poisoning. objective: to evaluate the genotoxic risk among children who exposed to pesticides and measure dna damage due to pesticides exposure. m...