resonance – TechConnect Briefs

Resonance Tunneling in Concentric Quantum Rings

Nimmo J., North Carolina Central University, US

In the present work, the phenomenon known as resonance tunneling due to the presents of a magnetic field perpendicular to the surface of double concentric rings (DCQR) is presented. It has shown that in the [...]

Anomalous Thermomechanical Softening-Hardening Transitions in Micro-oscillators

Sahai T., Bhiladvala R., Zehnder A., Cornell University, US

This work documents and explains a counter-intuitive nonlinear phenomenon, where the laser-detected resonant motion of forced, micromechanical oscillators can be tuned from softening to hardening by increasing the laser power incident on a prestressed silicon [...]

Experimental results for a parametrically excited micro-ring resonator

Harish K.M., Gallacher B.J., Burdess J.S., Neasham J.A., University of Newcastle upon Tyne, UK

This paper reports experimental results for a parametrically excited micro-ring resonator. Actuation and sensing are performed electrostatically thus making the scheme suitable for many vibratory sensors. The equation of motion for the electrostatically actuated MEMS [...]

Optical Absorption Modeling of Arbitrary Shaped Nanoparticles

Mullin P., Kozlowski G., Kozlowski P.G., Kozlowski G., Kozlowski P.G., Busbee J.D., Jones J.G., Wright State University, US

A method for modeling the optical absorption spectra of nanosize metal particles is demonstrated. Computer software has been developed to generate the absorption spectra from the particles geometry and material properties. The software breaks the [...]

Vibration Analysis of Quartz Yaw-Rate Sensor to Reduce Mechanical Coupling

Fujiyoishi M., Nononmura Y., Omura Y., Tsukada K., Matsushige S., Kurata N., Toyota Central R&D Labs, JP

For a yaw-rate sensor (gyroscope), the reduction of mechanical coupling phenomenon is a key technology for achieving high performance. We analyze the phenomenon with a combination of two models, (1) a static model of a [...]