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Full-Text Articles in Engineering
Optimization Strategy For Resonant Mass Sensor Design In The Presence Of Squeeze Film Damping, Chengzhang Li, Michele H. Miller
Optimization Strategy For Resonant Mass Sensor Design In The Presence Of Squeeze Film Damping, Chengzhang Li, Michele H. Miller
Michigan Tech Publications
This paper investigates the design optimization of an electrostatically actuated microcantilever resonator that operates in air. The nonlinear effects of electrostatic actuation and air damping make the structural dynamics modeling more complex. There is a need for an efficient way to simulate the system behavior so that the design can be more readily optimized. This paper describes an efficient analytical approach for determining the optimum design for a microcantilever resonant mass sensor. One simple case is described. The sensor design is a square plate that is coated with a functional polymer and attached to the substrate with folded leg springs. …
Quantum Capacitance Extraction For Carbon Nanotube Interconnects, Vidur Parkash, Ashok K. Goel
Quantum Capacitance Extraction For Carbon Nanotube Interconnects, Vidur Parkash, Ashok K. Goel
Michigan Tech Publications
Electrical transport in metallic carbon nanotubes, especially the ones with diameters of the order of a few nanometers can be best described using the Tomanaga Luttinger liquid (TL) model. Recently, the TL model has been used to create a convenient transmission line like phenomenological model for carbon nanotubes. In this paper, we have characterized metallic nanotubes based on that model, quantifying the quantum capacitances of individual metallic single walled carbon nanotubes and crystalline bundles of single walled tubes of different diameters. Our calculations show that the quantum capacitances for both individual tubes and the bundles show a weak dependence on …
Source Attribution And Interannual Variability Of Arctic Pollution In Spring Constrained By Aircraft (Arctas, Arcpac) And Satellite (Airs) Observations Of Carbon Monoxide, J. A. Fisher, D. J. Jacob, M. T. Purdy, M. Kopacz, P. Le Sager, Shiliang Wu, Et. Al.
Source Attribution And Interannual Variability Of Arctic Pollution In Spring Constrained By Aircraft (Arctas, Arcpac) And Satellite (Airs) Observations Of Carbon Monoxide, J. A. Fisher, D. J. Jacob, M. T. Purdy, M. Kopacz, P. Le Sager, Shiliang Wu, Et. Al.
Michigan Tech Publications
We use aircraft observations of carbon monoxide (CO) from the NASA ARCTAS and NOAA ARCPAC campaigns in April 2008 together with multiyear (2003–2008) CO satellite data from the AIRS instrument and a global chemical transport model (GEOS-Chem) to better understand the sources, transport, and interannual variability of pollution in the Arctic in spring. Model simulation of the aircraft data gives best estimates of CO emissions in April 2008 of 26 Tg month−1 for Asian anthropogenic, 9.4 for European anthropogenic, 4.1 for North American anthropogenic, 15 for Russian biomass burning (anomalously large that year), and 23 for Southeast Asian biomass burning. …