Low-temperature reactions in the chemistry of nanosystems

Abstract

Infinite densities are non-normalizable quasi-probability distributions that can describe the long-time properties of systems when ergodicity is broken and the equilibrium Boltzmann-Gibbs distribution fails. Their experimental observation has remained elusive so far. We here perform semiclassical Monte Carlo simulations of cold atoms in dissipative optical lattices with realistic parameters. We show that the momentum infinite density, as well as its scale invariance, should be observable in shallow potentials. We further evaluate the momentum autocorrelation function both in the stationary and nonstationary, aging regime.

Reactions in Low Temperature Solid Co-Condensates and Size Effects

“…The most interesting findings in cryochemistry of metal nanoparticles are the size effects of various sorts [12]. As such effects we consider the influence of metal species size (the number of atoms in the structure) or film thickness on their reactivity.…”

The ESR-Study of Chemical Interactions in Triple Solid ‘Ag-CCl4-5CB’ Co-Condensate Mesogenic System

“…The mesogenic matrices possessing diversely molecular organised phases in the solid and liquid crystalline states are of great interest for synthesis of anisotropic metal nanoparticles and their highly ordered assemblies [6][7]. In the present work, the specific features of mesogenic ordering effects on the processes of metal atom aggregation and on the chemical interactions of metal species of different aggregation size were studied for the example of silver atoms and silver nanoclusters interacting with carbon tetrachloride in the low temperature mesogenic matrix of 4-pentyl-4-cyanobiphenyl.…”

Metastable complexes of some d- and f-block metals with mesogenic cyanobiphenyls

“…The temperatures of phase transitions between crystal and nematic (K-N), nematic and isotropic (N-I), crystal and smectic (C-S), smectic and nematic (S-N) states for 5CB and 8CB are as follows: T K-N = 295 K, T N-I = 309 K and T K-S = 293 K, T S-N = 307 K, T N-I = 314 K, respectively. It is important to note that 5CB and 8 CB themselves can be considered as self-organizing supramolecular system with molecular dimers and higher asssociates existing in solid, smectic and nematic phases [12][13][14].…”