Heterocoagulation of Aqueous Dispersed Systems

Electrogenerated chemiluminescence of CdSe quantum dots dispersed in aqueous solution.

Electrogenerated chemiluminescence (ECL) of CdSe quantum dots (QDs) dispersed in aqueous solution was studied with bare electrode. The ECL emission was observed at -1.4 V vs. Ag/AgCl and the ECL spectrum peak is similar to that of the defect photoluminescence (PL) spectrum, indicating the surface defects played a critical role in the emission process. The experiment results suggested that disso...

Electromobility of Mica Particles Dispersed in Aqueous Solutions

-Mobility measurements were made for dry-ground mica particles dispersed in aqueous KC1, Cr(NO3)3, and cetyltrimethylammonium bromide (CTAB) solutions. In the latter solutions charge reversal occurred at about 2 x 10 -6 M and 3 x 10 -5 M, respectively. Negative zeta potentials in KC1 solutions calculated using the Smoluchowski equation are about one third of the corresponding values obtained fr...

Distribution Systems and Dispersed Generation

Analysis of Dispersed - Phase Fresh Perspective Systems :

single-particle process Consider a single particle of volume V ( t ) at time t which undergoes random, discontinuous “erosion” to smaller sizes in accord with the probabilistic law: Pr( V ( t + d t ) I u I V ( f ) = u’ 1 = B ( u I u’ )dt We let F( u, t ) be the cumulative distribution function for the size of the single particle undergoing random erosion. Suppose that the cumulative probability...

Controlled structuring of dispersed food systems

Dispersed systems such as emulsions and suspensions are encountered in a large variety of applications areas such as food, cosmetics, pharmaceutics and polymers. To obtain the desired performance of an emulsion the dispersing process, i.e. droplet size distribution has to be monitored and controlled. By combining droplet generation, deformation and fixation in one experimental set-up we aim to ...