Lloyd Winthrop Co.- Mrs. R. H. Walker, December 15, 1928

Correspondence: From J. Diamant, Lloyd Winthrop Co. Incorporated Members - Real Estate Board of New York - Mortgages, to Rosa G. Holmes Walker, Jacksonville, Florida, letter regarding Mrs. Walker\u27s application for first mortgage on property 206 W. 122nd Street, New York City. Handwritten response to letter on front and back

Lloyd Winthrop Co.- Rosie H. Walker, November 21, 1928

Correspondence: From J. Diamant, Lloyd Winthrop Co. Incorporated Members - Real Estate Board of New York - Mortgages, to Rosa G. Holmes Walker, Jacksonville, Florida, letter regarding mortgage payment due for property 206 W. 122nd Street, New York Cit

Lloyd Winthrop Co.- Mrs. R. Holmes-Walker, December 20, 1928

Correspondence: From J. Diamant, Lloyd Winthrop Co. Incorporated Members - Real Estate Board of New York - Mortgages, to Rosa G. Holmes Walker, Jacksonville, Florida, letter regarding Mrs. Walker\u27s application for first mortgage on property 206 W. 122nd Street, New York Cit

Lloyd Winthrop Co.- Mrs. R. H. Walker, December 3, 1928

Correspondence: From J. Diamant, Lloyd Winthrop Co. Incorporated Members - Real Estate Board of New York - Mortgages, to Rosa G. Holmes Walker, Jacksonville, Florida, letter regarding Mrs. Walker\u27s application for first mortgage on property 206 W. 122nd Street, New York Cit

Kinetics of Surfactant Adsorption at Fluid/Fluid Interfaces: Non-ionic Surfactants

We present a model treating the kinetics of adsorption of soluble surface-active molecules at the interface between an aqueous solution and another fluid phase. The model accounts for both the diffusive transport inside the solution and the kinetics taking place at the interface using a free-energy formulation. In addition, it offers a general method of calculating dynamic surface tensions. Non-ionic surfactants are shown, in general, to undergo a diffusion-limited adsorption, in accord with experimental findings.Comment: 6 pages, 3 figures, see also cond-mat/960814

Premicellar aggregation of amphiphilic molecules: Aggregate lifetime and polydispersity

A recently introduced thermodynamic model of amphiphilic molecules in solution has yielded, under certain realistic conditions, a significant presence of metastable aggregates well below the critical micelle concentration -- a phenomenon that has been reported also experimentally. The theory is extended in two directions pertaining to the experimental and technological relevance of such premicellar aggregates. (a) Combining the thermodynamic model with reaction rate theory, we calculate the lifetime of the metastable aggregates. (b) Aggregation number fluctuations are examined. We demonstrate that, over most of the metastable concentration range, the premicellar aggregates should have macroscopic lifetimes and small polydispersity.Comment: 7 pages, 2 figure

Reply to Comment on: "Are stress-free membranes really 'tensionless'?"

This is a reply to a comment on the paper arXiv:1204.2075 "Are stress-free membranes really tensionless ?" (EPL 95,28008 (2011))

Micellization in the presence of polyelectrolyte

We present a simple model to study micellization of amphiphiles condensed on a rodlike polyion. Although the mean field theory leads to a first order micellization transition for sufficiently strong hydrophobic interactions, the simulations show that no such thermodynamic phase transition exists. Instead, the correlations between the condensed amphiphiles can result in a structure formation very similar to micelles.Comment: 8 pages, 7 figure

Correlated particle dynamics in concentrated quasi-two-dimensional suspensions

We investigate theoretically and experimentally how the hydrodynamically correlated lateral motion of particles in a suspension confined between two surfaces is affected by the suspension concentration. Despite the long range of the correlations (decaying as 1/r^2 with the inter-particle distance r), the concentration effect is present only at short inter-particle distances for which the static pair correlation is nonuniform. This is in sharp contrast with the effect of hydrodynamic screening present in unconfined suspensions, where increasing the concentration changes the prefactor of the large-distance correlation.Comment: 13 page