Browsing Bradley Department of Electrical and Computer Engineering by Title
Now showing items 410-429 of 603
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Observation of Quantized and Partial Quantized Conductance in Polymer- Suspended Graphene Nanoplatelets
(SpringerOpen, 2016)Quantized conductance is observed at zero magnetic field and room temperature in metal-insulator-metal structures with graphene submicron-sized nanoplatelets embedded in a 3-hexylthiophene (P3HT) polymer layer. In devices ... -
Observation Of The Enhanced Backscattering Of Light By The End Of A Tilted Dielectric Cylinder Owing To The Caustic Merging Transition
(Optical Society of America, 2003-03-01)The scattering of light by obliquely illuminated circular dielectric cylinders was previously demonstrated to be enhanced by a merger of Airy caustics at a critical tilt angle. [Appl. Opt. 37, 1534 (1998)]. A related ... -
Observations of crab giant pulses in 20-84 MHz using LWA1
(IOP Publishing Ltd., 2013-05-01)We report the detection and observed characteristics of giant pulses from the Crab Nebula pulsar (B0531+21) in four frequency bands covering 20-84 MHz using the recently completed Long Wavelength Array Station 1 (LWA1) ... -
Off-chip passivated-electrode, insulator-based dielectrophoresis (O pi DEP)
(Springer Heidelberg, 2013-08-01)In this study, we report the first off-chip passivated-electrode, insulator-based dielectrophoresis microchip (OπDEP). This technique combines the sensitivity of electrode-based dielectrophoresis (eDEP) with the high ... -
On Data Center Demand Response: A Cloud Federation Approach
(IEEE, 2019)The significantly high energy consumption of data centers constitutes a major load on the smart power grid. Data center demand response is a promising solution to incentivize the cloud providers to adapt their consumption ... -
On initial enhancement of mesospheric dust associated plasma irregularities subsequent to radiowave heating
(Copernicus Publications, 2008)Important observational manifestations of subvisible mesospheric dust are Polar Mesospheric Summer Echoes PMSE which are produced by scattering from electron irregularities produced by dust charging. It has been observed ... -
On ion gyro-harmonic structuring in the stimulated electromagnetic emission spectrum during second electron gyro-harmonic heating
(Copernicus Publications, 2012)Recent observations show that, during ionospheric heating experiments at frequencies near the second electron gyro-harmonic, discrete spectral lines separated by harmonics of the ion-gyro frequency appear in the stimulated ... -
On the evanescent fields and the causality of the focus wave modes
(AIP Publishing, 1995-08-01)The diverging and converging field components of the source-free focus wave modes are studied within the framework of both the Whittaker and Weyl plane wave expansions, It is shown that, in the Weyl picture, the evanescent ... -
On the influence of open magnetic flux on substorm intensity: Ground- and space-based observations
(American Geophysical Union, 2003-06-01)Using the location of maximum region 1 current determined by the Active Magnetosphere and Planetary Electrodynamics Response Experiment as a proxy for the open/closed field line boundary, we monitor the evolution of the ... -
On the relative roles of dynamics and chemistry governing the abundance and diurnal variation of low-latitude thermospheric nitric oxide
(European Geosciences Union, 2019-01-25)We use data from two NASA satellites, the Thermosphere Ionosphere Energetics and Dynamics (TIMED) and the Aeronomy of Ice in the Mesosphere (AIM) satellites, in conjunction with model simulations from the thermosphere-io ... -
On the spatial distribution of decameter-scale subauroral ionospheric irregularities observed by SuperDARN radars
(American Geophysical Union, 2013-08-01)The midlatitude Super Dual Auroral Radar Network (SuperDARN) radars regularly observe nighttime lowvelocity SubAuroral Ionospheric Scatter (SAIS) from decameterscale ionospheric density irregularities during quiet geomagnetic ... -
On the Theory of Optical Hilbert transform for incoherent objects
(Optical Society of America, 2007-03-01)The Hilbert transform as been investigated abundantly in coherent imaging. To the best of our knowledge, it is for the first time investigated in the context of incoherent imaging. We present a two-pupil optical heterodyne ... -
On the uniqueness of solution of magnetostatic vector_potential problems by three-dimensional finite-element methods
(American Institute of Physics, 1982)In this paper, particular attention is paid to the impact of finite_element approximation on uniqueness and to approximations implicit in finite element formulations from the uniqueness requirements standpoint. It is also ... -
An Open Source Modeling Framework for Interdependent Energy-Transportation-Communication Infrastructure in Smart and Connected Communities
(IEEE, 2019)Infrastructure in future smart and connected communities is envisioned as an aggregate of public services, including energy, transportation, and communication systems, all intertwined with each other. The intrinsic ... -
Optical cryptography with biometrics for multi-depth objects
(Springer Nature, 2017-10-11)We propose an optical cryptosystem for encrypting images of multi-depth objects based on the combination of optical heterodyne technique and fingerprint keys. Optical heterodyning requires two optical beams to be mixed. ... -
Optical Digital Incoherent Image-Processing For Extended Depth Of Field
(Optical Society of America, 1987-08-01)For a severely defocused incoherent system, its optical transfer function (OTF) has isolated zeros; therefore, an exact inverse filtering cannot be performed. Isolated zeros in the OTF can be avoided by choosing an annular ... -
Optical image coding with a circular Dammann grating
(Optical Society of America, 2009-01-01)A circular Dammann grating in the front focal plane of a lens is used to generate an annular beam in the back focal plane to code an object by two-dimensional scanning. The coded image of the object is decoded digitally ... -
Optical Image Recognition Of Three-Dimensional Objects
(Optical Society of America, 1999-09-01)A three-dimensional (3-D) optical image-recognition technique is proposed and studied. The proposed technique is based on two-pupil optical heterodyne scanning and is capable of performing 3-D image recognition. A hologram ... -
Optical Scanning Cryptography For Secure Wireless Transmission
(Optical Society of America, 2003-09-01)We propose a method for secure wireless transmission of encrypted information. By use of an encryption key, an image or document is optically encrypted by optical heterodyne scanning and hence encryption is performed on ... -
Optical Scanning Extrinsic Fabry-Perot Interferometer For Absolute Microdisplacement Measurement
(Optical Society of America, 1997-02-01)We report an optical-scanning, dual-fiber, extrinsic Fabry-Perot interferometer system for absolute measurement of microdisplacement. The system involves two air-gapped Fabry-Perot cavities, formed by fiber end faces, ...
