Passive optical switches based on endohedral fullerenes

Spin Quantum Computing with Endohedral Fullerenes

Vibrational properties of noble gas endohedral fullerenes.

Analysis of IR and Raman spectra of Ar@C(60) and Kr@C(60) shows that the incorporation of noble gas atoms causes a blue shift of low energy vibrations, which have radial character, and a red shift of higher energy ones which have a tangential character movement. The mechanism of these phenomena is explained on the basis of ab initio numerical experiments with DFT and MP2 procedures. Methodologi...

Structural metastability of endohedral silicon fullerenes

Alex Willand,1 Matthias Gramzow,2 S. Alireza Ghasemi,1 Luigi Genovese,3 Thierry Deutsch,4 Karsten Reuter,2,5 and Stefan Goedecker1 1Department of Physics, Universität Basel, Klingelbergstr. 82, 4056 Basel, Switzerland 2Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany 3European Synchrotron Radiation Facility, 6 rue Horowitz, 38043 Grenoble, France 4INAC/SP2...

On the Stability of Endohedral Rare Gas Fullerenes

The stability of He@C60 and Ne@C60 is discussed in the context of a spherical model where the carbon atoms are smeared out into a uniform shell. The electronic properties of the sixty π electrons together with those of the central atom are treated in the Thomas-Fermi approximation. Simple electrostatic reasoning elucidates the nature of the radial stability of the complex. A method to include n...

Robust Lyapunov-based Control of MEMS Optical Switches

In this paper, a robust PID control scheme is proposed for Micro-Electro-Mechanical-Systems (MEMS) optical switches. The proposed approach is designed in a way which solves two challenging and important problems. The first one is successful reference tracking and the second is mitigating the system nonlinearities. The overall system composed of nonlinear MEMS dynamics and the PID controller is ...