## Abstract A tentative and phenomenological analysis of negative electric birefringence, which has often been observed as an anomalous birefringence phenomenon in a concentrated solution of rodlike macromolecules, is presented. Tobacco mosaic virus (TMV) was used as a typical example for the inves
Electric permittivity of alfalfa mosaic virus in aqueous solutions
✍ Scribed by F. Van Der Touw; J. W. H. Briedé; M. Mandel
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1973
- Tongue
- English
- Weight
- 508 KB
- Volume
- 12
- Category
- Article
- ISSN
- 0006-3525
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✦ Synopsis
Abstract
The electric permittivity of alfalfa virus particles in buffer solutions of three different concentrations at pH 7 was studied between 10 kHz and 100 MHz. The experimental results could be described with one single dispersion curve of the Cole‐Cole type characterized by a concentration independent specific dielectric increment and mean relaxation time. The results were interpreted semi‐quantitatively in terms of counterions–atmosphere polarizability, neglecting counterion repulsion.
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## Abstract Two new techniques, amplitude modulation (AM) and frequency modulation (FM) of an electric field, are developed for the light‐scattering study of polymer solutions under ac electric fields. The AM technique makes it possible to observe accurately the frequency dependence of the intensit