Direct and Reverse Problems in Linear Dichroism Studies

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Abstract
A new approach is proposed for linear dichroism studies of particles (macromolecules) of unknown shape oriented in stretched or compressed polymer matrices. If properties of the matrix are known, and the measurements are taken at known deformations of the sample, then comparison of experimental results with various theoretical models for orientation can reveal the shape of studied particles. As an example, it is shown that linear dichroism measurements allow to distingiush between rod-shaped and disc-shaped particles.