Ultrafast (Bio)physical and (Bio)chemical Dynamics

Macromolecular crowding: biochemical, biophysical, and physiological consequences.

CONTENTS PERSPECTIVES AND OVERVIEW ........................................................................................ 28 Nomenclature ........................................................................................................... 30 THEORETICAL CONCEPTS ............................................................................................... 31 The Effect of Macromolecul...

Ultrafast and Nonlinear Plasmon Dynamics

The interaction of light with a metal mediated by surface plasmon polaritons provides for sub-diffraction limited optical confinement and control. While the relationship of the linear plasmon response to the underlying elementary electronic excitations of the metal is well understood in general, the corresponding ultrafast and nonlinear plasmon interactions could provide further enhanced functi...

Ultrafast Reaction Dynamics

With new laser techniques and with gas phase and molecular beam experiments, it is now possible to determine the ultrafast motion in isolated chemical reactions-chemistry on the I 0 l 3 -second time scale. A decade ago this magazine devoted a special issue to laser chemistry (see PHYSICS TODAY, November 1980). One of the articles emphasized the importance of time scales in chemical reactions an...

Unifying ultrafast magnetization dynamics.

We present a microscopic model that successfully explains the ultrafast equilibration of magnetic order in ferromagnetic metals at a time scale tau(M) of only a few hundred femtoseconds after pulsed laser excitation. It is found that tau(M) can be directly related to the so-called Gilbert damping factor sigma that describes damping of GHz precessional motion of the magnetization vector. Indepen...

Some Biochemical and Biophysical Characteristics of Canine and Bovine Erythrocytes