Abstract

We propose a simple stochastic model which successfully explain the longcoherence effects observed in photosynthetic EET by 2D photon echoexperiments of G. S. Engel et. al. (Nature, {f 446} 782, (2007)). OurTwo-Component Phonon Spectrum (TCPS) model is based upon the division ofphonon degrees of freedom into systematic component (treated through Polarontransformation) and the stochastic component (treated through dynamicaldisorder). This model successfully explain the observed long coherence upto$ sim 600 fsec$ in EET experiments and it uses the information of homogeneous broadening from 2-D photon echo spectrum.

Abstract

Abstract

Abstract

Demanding beneficial surface properties of materials used in manybiomedical applications, to ensure the better performance of thebiomaterial without causing any adverse effect, necessitates the surfacemodification of the materials. Among the various surface modificationtechniques available, plasma treatment plays an important role bymodifying the surface properties of any material/any geometry, limiting itto a depth of few molecular layers in an eco-friendly manner. The coldplasma treatment is suitable for heat sensitive materials since it isoperated at near room temperature. Changes in physic-chemical propertiesof the materials make them suitable for biomedical applications. Some ofthe applications of plasma surface modification in biomedical applicationswill be touched upon in the talk with more emphasis on the bio and bloodcompatibility of radio frequency plasma surface modified polymers.

Abstract