Molecular and Colloidal Electro-optics (Surfactant Science) by Stoyl P. Stoylov, Maria V. Stoimenova

By Stoyl P. Stoylov, Maria V. Stoimenova

Molecular and Colloidal Electro-Optics provides cohesive insurance from the world over famous specialists on new ways and advancements in either theoretical and experimental parts of electro-optic technological know-how. It includes a well-integrated but multi-disciplinary therapy of primary ideas, innovations, and functions of electro-optic options for the characterization of macromolecular, small-particle, and nanomolecular structures.

Following a ancient evaluate of post-war advances in electro-optics of disperse platforms, the 1st a part of the booklet makes a speciality of the most recent achievements in electro-optic thought, relatively low-frequency leisure. It bargains comparative discussions and experimental info to accompany diverse viewpoints at the beginning of the low-frequency results and a number of theoretical buildings. the second one half highlights the original good thing about utilizing electro-optics instead to traditional characterization and research of colloidal platforms. Demonstrating the sensitivity of electro-optic ways to interparticle interactions, the publication explains how those equipment are used to research particle floor electrical states, evaluation part transitions, and make certain actual homes.

As the 1st remedy of this topic to floor in additional than fifteen years, Molecular and Colloidal Electro-Optics is a definitive, updated portrait of contemporary colloidal electro-optic technological know-how. This one-stop connection with the newest idea, tools, and purposes is perfect for complicated graduate scholars and researchers in biophysical chemistry, microbiology, polymer, colloid, and nanoscience.

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Extra resources for Molecular and Colloidal Electro-optics (Surfactant Science)

Example text

In the case of composite nanoparticle, constructed from a big one (about 100 nm) and a small one (about 10 nm) of opposite sign of the electric charge, a permanent dipole moment, as expected, was observed [57]. This permanent IDM depends on the properties of the initial single particles and the structure of the composite particle. In most cases the permanent IDM is connected with a lower or decreased symmetry of the composite or hybrid particle and the properties of its interface. We are aware of few attempts to estimate the magnitude of permanent electric dipole moment of colloid particles on the basis of their structure.

1 Volume (Dielectric) Electric Polarizability..................................................... 2 Maxwell–Wagner–Sillars Interfacial Polarizability ........................................ 3 Electrically Charged Colloid Particles ........................................................... 4 Charge-Dependent (Ionic or Counterion) Electrically Induced IDM (CHDIDM).................................................................................................... 5 Slow Electric Polarizabilities..........................................................................

The results are not very exciting but one sees that both mechanisms play a role in the results. At high frequency the rod is too slow to follow the voltage and takes an average value. At low frequency the effect is independent of the phase meaning that there is a permanent dipole. I did try to obtain quantitative results but the precision was very limited. I am sure that now it would be possible to make these experiments with much more accuracy but my focus has shifted to other problems and I leave this method to younger people.

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