31 citations
7 papers
Hydrodynamic Stokes flow induced by a chemically active patch imprinted on a planar wall
Mihail N. Popescu, Bogdan Adrian Nicola, William E. Uspal +2
Patches of catalyst imprinted on supporting walls induce motion of the fluid around them once they are supplied with the chemical species (``fuel'') that are converted by the catal…
Surface plasmon resonances of clustered nanoparticles
Titus Sandu, Daniel Vrinceanu, Eugen Gheorghiu
Linear clusters made by tightly connecting two or more metallic nanoparticles have new types of surface plasmon resonances as compared to isolated nanoparticles. These new resonanc…
Comments on "Spin-dependent tunneling through a symmetric semiconductor barrier: The Dresselhaus effect"
Titus Sandu
In a recent paper [Phys. Rev. B 72, 153314 (2005)], the -Dresselhaus term in the contacts and the full form of the current operator are considered for spin-dependent tunneli…
Bandgaps and band bowing in semiconductor alloys
Titus Sandu, Radu I. Iftimie
The bandgap and band bowing parameter of semiconductor alloys are calculated with a fast and realistic approach. The method is a dielectric scaling approximation that is based on a…
Linear dielectric response of clustered living cells
Titus Sandu, Daniel Vrinceanu, Eugen Gheorghiu
The dielectric behavior of a linear cluster of two or more living cells connected by tight junctions is analyzed using a spectral method. The polarizability of this system is obtai…
Dynamics of a quantum oscillator strongly and off-resonantly coupled with a two-level system
Titus Sandu
Beyond the rotating-wave approximation, the dynamics of a quantum oscillator interacting strongly and off-resonantly with a two-level system exhibit beatings, whose period equals t…