US – Page 391 – TechConnect Briefs

Modeling of Nanoelectronic and Quantum Devices

Ferry D.K., Akis R., Gilbert M.J., Speyer G., Arizona State University, US

The semiconductor industry is constantly pushing towards ever smaller devices and it is expected that we will see commercial devices with gate lengths less than 10 nm within the next decade. Such small devices have [...]

Multiscale (Nano-to-Micro) Design of Integrated Nanobio Systems

Jenkins J., Hagan M., Chakraborty A., Sundaram S., CFD Research Corporation, US

Biological systems have the first level of organization at the nanoscale. Proteins, DNA, RNA, ion channels are nanoscale systems that leverage molecular interactions to perform specific tasks. Integrated nano-bio systems have emerged as strong candidates [...]

A Minnow, an E. Coli and Ubiquinone: The Story of Rectified Brownian Motion

Fox R.F., School of Physics, US

Rectified Brownian motion provides a mechanistic alternative to the power stroke model for the function of motor proteins and other enzyme complexes. ATP is the source of metabolic free energy for motor proteins such as [...]

Nano-Scale Effects in GaN-based Light-Emitting Diodes

Piprek J., Nakamura S., University of California, US

We here investigate the effects of built-in polarization on the properties of non-symmetric InGaN quantum wells. The impact of these nano-scale effects on the performance of blue light emitting diodes is analyzed utilizing advanced numerical [...]

An Ultra-Fast Scheme for Sample-Detection in Dynamic-Mode Atomic Force Microscopy

Sahoo D.R., Sebastian A., Salapaka M.V., Iowa State University, US

In typical dynamic mode operation of atomic force microscopes steady state signals like amplitude and phase are used for detection and imaging of material. In these methods, high quality factor of the cantilever results in [...]

High Resolution Backside Imaging and Thermography using a Numerical Aperature Increasing Lens

Ünlü M.S., Ippolito S.B., Eraslan M.G., Thorne S.A., Vamivakas A., Goldberg B.B., Leblebici Y., Boston University, US

Nanoscale imaging of defects in ICs is a great current technological challenge as IC feature sizes continue to shrink. We have developed novel techniques based on a Numerical Aperture Increasing Lens (NAIL) to study semiconductors [...]

Ultimate Limits to Optical Displacement Detection in Nanoelectromechanical Systems

Kouh T., Karabacak D., Kim D-H., Ekinci K.L., Boston University, US

Nano-electro-mechanical Systems (NEMS) are among the most promising manifestations of the emerging field of nanotechnology. These are electromechanical systems with dimensions in the deep submicron mostly operated in their resonant modes. In this size regime, [...]

InAs/GaAs Quantum Ring in Energy Dependent Quasi Particle Effective Mass Approximation

Filikhin I., Suslov V.M., Deyneka E., Vlahovic B., North Carolina Central University, US

Considered is three-dimensional In/As quantum ring using energy dependent quasi-particle-effective-mass approximation. This model was first used by Y. Li et al. (Y. Li, O. Voskoboynikov, C.P. Lee, 2002 Technical Proceedings of International Conference on Modeling [...]

A Numerical Algorithm for Complex Biological Flow in Irregular Microdevice Geometries

Trebotich D., Colella P., Miller G.H., Nonaka A., Marshall T., Gulati S., Liepmann D., Lawrence Livermore National Laboratory, US

We present a numerical algorithm to simulate non-Newtonian flow in complex microdevice components. The model consists of continuum viscoelastic incompressible flow in irregular microscale geometries. Our numerical approach is the projection method of Bell, Colella [...]

New Computational Methods for Long-Range Electromagnetic Interactions on the Nanoscale

Tsukerman I., Friedman G., Halverson D., The University of Akron, US

The Flexible Local Approximation MEthod (FLAME) proposed recently by one of the authors is shown to be efficient for the simulation of long-range electromagnetic interactions between nanoparticles. Other promising applications of FLAME include charge or [...]