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Circular polarized leaky wave surface
(20140818)A circular polarized (CP) infrared (IR) leaky wave surface design is presented. The metasurface consists of an array of rectangular patches connected by microstrip and operating over the longwave infrared (LWIR) spectrum ... 
Directional thermal emission from a leakywave frequencyselective surface
(20130911)We design, fabricate, and characterize a frequencyselective surface (FSS) with directional thermal emission and absorption for longwave infrared wavelengths. The FSS consists of an array of patch antennas connected by ... 
Investigations on the development of a mixed displacementpressure formulation for an anelastic displacementfield finite element
(20060317)Space and weapon delivery systems contain guidance components and payload that need to be protected from the extremely harsh acoustic excitation present during launch operations. The above example represents just one ... 
Formal tests for LLM approaches using refined cockpit display technology
(20050531)Results are presented from formal flight and simulation experiments to test a new primary flight display (PFD)/refined multifunction display (MFD) system, with a computer generated dynamic pathway, as a viable means for a ... 
Design of a piezoceramicdriven syntheticjet actuator for aerodynamic performance improvement
(20080319)The interest in syntheticjet actuators is elicited by their employment in fluidcontrol applications, including boundarylayer control, combustion control etc. These actuators are zero netmassflux devices, and generally ... 
Quantitative characterization of resistive defects in thick composites using step heating thermography
(20080317)Inspection of thick composite structures, such as Reinforced Thermosetting Resin (RTR) pipes used in the petroleum industry, using infrared thermography is difficult. This paper investigates the use of step heating ... 
Optical encryption as a function of polarization in optical fiber communications
(20110425)An optical encryption technique based on polarization property of light is proposed. Many techniques using polarization beam splitters to encrypt the signal have been proposed earlier. They are based on splitting and ... 
Smart actuation of inlet guide vanes for small turbine engine
(20110307)Unmanned Aerial Vehicles (UAVs) have gained popularity over the past few years to become an indispensable part of aerial missions that include reconnaissance, surveillance, and communication [1]. As a result, advancements ... 
Robust decentralized formation flight control
(2011)Motivated by the idea of multiplexed model predictive control (MMPC), this paper introduces a new framework for unmanned aerial vehicles (UAVs) formation flight and coordination. Formulated using MMPC approach, the whole ... 
Damping of Seismic Vibrations of a 3D Asymmetrical Building Model with Multiple TMD’s
(201407)In this paper, the authors investigate the control of the seismic response of a three dimensional asymmetrical tierbuilding model, with a combination of three tuned mass dampers (TMD) located on the upper floor of the ... 
Integrodifferential diffusion equation for continuoustime random walk
(20100121)In this paper, we present an integrodifferential diffusion equation for continuoustime random walk that is valid for a generic waiting time probability density function. Using this equation, we also study diffusion behaviors ... 
Continuous time random walk with generic waiting time and external force
(20100520)We derive an integrodifferential diffusion equation for decoupled continuous time random walk that is valid for a generic waiting time probability density function and external force. Using this equation we also study ... 
Shock interaction with onedimensional array of particles in air
(2015)In this paper, we present axisymmetric numerical simulations of shock propagation in air over an aluminum particle for Mach numbers up to 10. The numerical method is a finitevolume based solver on a Cartesian grid that ... 
Singular behavior of the DebyeWaller factor of graphene
(20090316)It is shown that the meansquare displacement or the exponent of the DebyeWaller factor of graphene has a singularity except at zero temperature. The zerotemperature values of the meansquare displacement are calculated ... 
Parametric interatomic potential for graphene
(20090227)A parametric interatomic potential is constructed for graphene. The potential energy consists of two parts: a bond energy function and a radial interaction energy function. The bond energy function is based on the ... 
Road surface mirage: A bunch of hot air?
(20110420)The inferior mirage from road surfaces is a common phenomenon, which can be easily seen in everyday life. It has been recognized in the literature as a light refraction phenomenon due to the refractive index gradient caused ... 
Hydrogenation of magnesium nanoblades: The effect of concentration dependent hydrogen diffusion
(20110222)By assuming the H diffusion coefficient and H adsorption rate to be exponentially and linearly dependent on concentration, a physical model is developed to predict the hydrogenation process of Mg nanoblades. The predicted ... 
Capillarymediated dendritic branching
(2012)We consider the GibbsThomson temperature distribution as an active interface energy field with gradients and fluxes. Capillarity in conventional dendritic growth theories acts only as a passive boundary condition on the ...