Cell Membrane Integrity Examined by Nonlinear Light Scattering

Light scattering by nonlinear cylindrical multilayer structures

We study light scattering by cylindrical multilayer structures containing Kerr-type nonlinear materials. We develop a new semi-analytical method for solving such nonlinear problems by reducing the original 2D system by a 1D nonlinear Helmholtz equation. We apply our method for the case of wave scattering by the core-shell metal-dielectric nanowire and show that the nonlinearity allows us to con...

Light scattering by cubical particle in the WKB approximation

In this work, we determined the analytical expressions of the form factor of a cubical particle in the WKB approximation. We adapted some variables (size parameter, refractive index, the scattering angle) and found the form factor in the approximation of Rayleigh-Gans-Debye (RGD), Anomalous Diffraction (AD), and determined the efficiency factor of the extinction. Finally, to illustrate our form...

Gold Nanorods Mediate Tumor Cell Death by Compromising Membrane Integrity.

Light-activated therapies can be used to eradicate diseased cells and tissues in a non-invasive manner. Much attention has been focused on the emerging potential of photothermolysis (also referred to as optical hyperthermia), which involves the conversion of absorbed light into heat via nonradiative mechanisms. Photoactivated effects can be localized and intensified by employing exogenous agent...

Evidence of Light-by-Light Scattering

Induced Light-by-Light Scattering Experiment

During the Workshop Alexander Varfolomeev pointed out that light-by-light scattering at optical frequencies can be enhanced by use of a third laser beam [1]. Norman Kroll remarked that he had also considered this in the 60's [2]. Here we consider whether a 1-teraWatt laser, such as that built at U. Rochester for SLAC E-144 [3], could be used to perform such an experiment, and conclude that rate...