Many initially uniform systems can develop regular patterns of spatial structure when driven su ciently far from equilibrium. In their simplest forms, these patterns resemble soft condensed phases. Pattern formation takes place via instabilities that are the nonequilibrium equivalent of phase transitions. We rst provide a general overview of the study of pattern formation in uid dynamical syste...

We study the dynamics of an electrostatically driven impact microactuator. Impact between moving elements of the microactuator is modeled using the coefficient of restitution. Friction between the microactuator and its supporting substrate is modeled using the Amonton-Coulomb law. We consider the bifurcations under changes in the driving voltage and frequency. Grazing bifurcations introduce dis...

We report electroluminescence (EL) measurements carried out on three-terminal devices incorporating individual n-type CdSe nanowires. Simultaneous optical and electrical measurements reveal that EL occurs near the contact between the nanowire and a positively biased electrode or drain. The surface potential profile, obtained by using Kelvin probe microscopy, shows an abrupt potential drop near ...

Magnetoelectric coupling has attracted interest due to its potential to write magnetic information with electric fields. In the model system of Fe islands on Cu(111), electric fields can induce martensitic phase transitions between ferromagnetic body-centered cubic and antiferromagnetic face-centered cubic phases. Here, we present a detailed study of the dynamics and energetics of the phase tra...

This study presents deterministic learning from adaptive neural control of unknown electrically-driven mechanical systems. An adaptive neural network system and a high-gain observer are employed to derive the controller. The stable adaptive tuning laws of network weights are derived in the sense of the Lyapunov stability theory. It is rigorously shown that the convergence of partial network wei...

A bioreactor integrated with an electrically driven membrane separation process (Reverse Electro-Enhanced Dialysis REED) is under investigation as potential technology for enhancing lactic acid bioproduction. In order reveal the operation of the integrated process to achieve a specific production goal, a methodology for goal driven control system development is expanded to handle periodically o...

Single-photon sources that provide non-classical light states on demand have a broad range of applications in quantum communication, quantum computing and metrology1. Singlephoton emission has been demonstrated using single atoms2, ions3, molecules4, diamond colour centres5,6 and semiconductor quantum dots7–11. Significant progress in highly efficient8,11 and entangled photons9 sources has rece...

Peyman Hessari,1,* Younghae Do,2,† Ying-Cheng Lai,3,4 Junseok Chae,3 Cheol Woo Park,1 and GyuWon Lee5 1School of Mechanical Engineering, Kyungpook National University, Daegu, 702-701, Korea 2Department of Mathematics, KNU-center for Nonlinear Dynamics, Kyungpook National University, Daegu, 702-701, Korea 3School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, AZ...

We present an electrically driven plasmonic device consisting of a gold nanoparticle trapped in a gap between two electrodes. The tunneling current in the device generates plasmons, which decay radiatively. The emitted spectrum extends up to an energy that depends on the applied voltage. Characterization of the electrical conductance at low temperatures allows us to extract the voltage drop on ...

Photonic signal processing requires efficient on-chip light sources with higher modulation bandwidths. Today’s conventional fastest semiconductor diode lasers exhibit modulation speeds only on the order of a few tens of GHz due to gain compression effects and parasitic electrical capacitances. Here we theoretically show an electrically-driven carbon nanotube (CNT)-based laser utilizing strong l...