Losses and Degradation in Nanoscale Frequency Control Resonator
Abstract
The objective is to identify loss and degradation mechanisms relevant to the frequency control resonator performance as the resonator dimensions reduce to the nanodimensional spatial scale. The Department of Army interest in scaling such devices into the nanodimensional region stems from the technical projection that such resonators can operate at frequencies into the low GHz spectral region thus providing a low cost, integratable NEMS solid state device option for frequency control electronic applications relevant to secure communications. The key questions regarding NEMS resonator performance are the fundamental physical limitations that arise in quality factor Q and noise figure as the resonator is reduced to nanodimensions in order to achieve the higher frequencies of device operation. Such physical limitations may also present barriers in other NEMS smart actuator and sensor electronic device applications. The technical approach considers non-equilibrium heat generation and redistribution processes from mechanical strain during high frequency NEMS operation beyond the conventional heat diffusion and local temperature approximation. A semiclassical phonon dynamical picture is introduced to go beyond the conventional models. Scaling laws relevant to the appropriate phonon transport regimes and their transition boundaries are delineated, analyzed, and compared with results of detailed microscopic descriptions. Thus, the research approach involves scaling analysis, coupled with analytical and numerical modeling of phonon flow and heat redistribution in nanoscale resonators.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 07, 2007
- Accession Number
- ADA483438
Entities
People
- A. A. Kiselev
- G. J. Iafrate
Organizations
- North Carolina State University