Strong vibration nonlinearity in semiconductor-based nanomechanical systems

Nonlinearity in nanomechanical cantilevers

L. G. Villanueva,1,2 R. B. Karabalin,1 M. H. Matheny,1 D. Chi,1 J. E. Sader,1,3 and M. L. Roukes1 1Kavli Nanoscience Institute and Departments of Physics, Applied Physics, and Bioengineering, California Institute of Technology, Pasadena, California 91125, USA 2Department of Microand Nanotechnology, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark 3Department of Mathematics and S...

Nanomechanical architecture of semiconductor nanomembranes.

Semiconductor nanomembranes are single-crystal sheets with thickness ranging from 5 to 500nm. They are flexible, bondable, and mechanically ultra-compliant. They present a new platform to combine bottom-up and top-down semiconductor processing to fabricate various three-dimensional (3D) nanomechanical architectures, with an unprecedented level of control. The bottom-up part is the self-assembly...

Biosensors based on nanomechanical systems.

The advances in micro- and nanofabrication technologies enable the preparation of increasingly smaller mechanical transducers capable of detecting the forces, motion, mechanical properties and masses that emerge in biomolecular interactions and fundamental biological processes. Thus, biosensors based on nanomechanical systems have gained considerable relevance in the last decade. This review pr...

Effect of gain nonlinearity in semiconductor lasers.

Spin-vibration interaction in a nanomechanical spin-valve

We study spin-dependent transport in a suspended carbon nanotube quantum dot in contact with two ferromagnetic leads and with the dot’s spin coupled to the flexural modes. We consider a spinvibrational interaction inducing spin-flip processes between the two Zeeman levels of the dot due to spin-orbit interaction or a magnetic field gradient. The inelastic vibration-assisted spin-flips give rise...