Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Physics
Diffusion-Limited Reactions In Spherical Cavities, Amy Lisa Graves, Elizabeth L. Grossman , '92, Dane D. Morgan Iii, '92, B. J. Berne
Diffusion-Limited Reactions In Spherical Cavities, Amy Lisa Graves, Elizabeth L. Grossman , '92, Dane D. Morgan Iii, '92, B. J. Berne
Physics & Astronomy Faculty Works
We study a quenching reaction occurring at sinks within a spherical cavity and at the cavity surface. One may think of reactions at these two, distinct locations as two, coupled reactive channels. Reactions of the type D* + A-->D + A are studied in the limit of nondilute A, present at both locations, and dilute D, present within the cavity. We use a Monte Carlo algorithm to compute mean rates, pseudo-first-order rates and branching ratios, and compare with results obtained by assuming that the two reactive channels operate in parallel. The ratio of activities of the two channels are …
Light Scattering In The Isotropic Phase Of Highly Chiral Liquid Crystals, J. E. Wyse, Peter J. Collings
Light Scattering In The Isotropic Phase Of Highly Chiral Liquid Crystals, J. E. Wyse, Peter J. Collings
Physics & Astronomy Faculty Works
Light-scattering measurements using circularly polarized light in a backscattering geometry are employed to measure the amplitude of fluctuations in two of the five structural modes present in the isotropic phase of chiral liquid crystals. From these measurements, the second-order transition temperatures for all five modes are then calculated. In order to investigate the effect of chirality on the fluctuations, the experiments are performed in various mixtures of the chiral liquid crystal 4’’-(2-methylbutylphenyl)-4’-(2-methylbutyl)-4-biphenylcarboxylate (CE2) and the nonchiral liquid crystal 4-n-pentylbenzenethio-4’-n-heptyloxybenzoate(7¯S5). The results show that fluctuations in the five modes are independent in low-chirality mixtures, and, as predicted by theory, the second-order …