All Outputs (44)

Elastodynamics on graphs: wave propagation on networks of plates (2018)
Journal Article

We consider the wave dynamics on networks of plates coupled along 1D joints. This set-up can be mapped onto an extension of wave graph systems studied in, for example, quantum graph theory. In the elastic case, different mode-types (flexural, longitu... Read More about Elastodynamics on graphs: wave propagation on networks of plates.

High-frequency structure- and air-borne sound transmission for a tractor model using Dynamical Energy Analysis (2018)
Journal Article

Dynamical Energy Analysis (DEA) is a mesh-based high frequency method for modelling structure borne sound in complex built-up structures. Vibro-acoustic simulations are performed directly on finite element meshes, circumventing the need for re-modell... Read More about High-frequency structure- and air-borne sound transmission for a tractor model using Dynamical Energy Analysis.

A fast and efficient approach for simulating ultrasonic waves and their interaction with defects in periodic structures (2018)
Presentation / Conference

An approach for simulating transient wave propagation in periodic waveguides is presented. Free and forced propagation of ultrasonic waves is modelled in one dimensional periodic structures. The interaction of ultra-sonic waves with structural inhomo... Read More about A fast and efficient approach for simulating ultrasonic waves and their interaction with defects in periodic structures.

Uncertainty quantification for phase-space boundary integral models of ray propagation (2018)
Journal Article

Total photoionization cross section of planar helium: scaling laws and collision orbits (2018)
Journal Article

The total photoionization cross section of planar helium has been calculated up to the single ionization threshold I22 of triple P states. The cross section shows chaotic fluctuations as the energy E approaches the double ionization threshold E=0. By... Read More about Total photoionization cross section of planar helium: scaling laws and collision orbits.

Near-Field MIMO Communication Links (2018)
Journal Article

© 2004-2012 IEEE. A procedure to achieve near-field multiple input multiple output (MIMO) communication with equally strong channels is demonstrated in this paper. This has applications in near-field wireless communications, such as Chip-to-Chip (C2C... Read More about Near-Field MIMO Communication Links.

Near-field scanning and propagation of correlated low-frequency radiated emissions (2017)
Journal Article

Electromagnetic radiation from complex printed circuit boards can occur over a broad frequency bandwidth, ranging from hundreds of MHz to tens of GHz. This is becoming a critical issue for assessment of EMC and interoperability as electronic componen... Read More about Near-field scanning and propagation of correlated low-frequency radiated emissions.

Wigner-Function-Based Propagation of Stochastic Field Emissions from Planar Electromagnetic Sources (2017)
Journal Article

© 1964-2012 IEEE. Modeling the electromagnetic radiation from modern digital systems - acting effectively as extended stochastic sources as part of a complex architecture - is a challenging task. We follow an approach here based on measuring and prop... Read More about Wigner-Function-Based Propagation of Stochastic Field Emissions from Planar Electromagnetic Sources.

Design and characterization of a diamond-shaped monopole antenna (2017)
Journal Article

We report a new planar antenna design in the shape of a diamond. The performance of the antenna design is initially obtained through simulation, then fabricated, and its performance evaluated through experiment. Experimental characterization of the d... Read More about Design and characterization of a diamond-shaped monopole antenna.

Improved approximation of phase-space densities on triangulated domains using discrete flow mapping with p-refinement (2017)
Journal Article

We consider the approximation of the phase-space flow of a dynamical system on a triangulated surface using an approach known as Discrete Flow Mapping. Such flows are of interest throughout statistical mechanics, but the focus here is on flows arisin... Read More about Improved approximation of phase-space densities on triangulated domains using discrete flow mapping with p-refinement.

Wave interaction with defects in pressurized composite structures (2017)
Conference Proceeding

A wave finite element (WFE) and finite element (FE) based computational method is presented by which the dispersion properties as well as the wave interaction coefficients for one-dimensional structural system can be predicted. The structural system... Read More about Wave interaction with defects in pressurized composite structures.

Propagating wave correlations in complex systems (2016)
Journal Article

We describe a novel approach for computing wave correlation functions inside finite spatial domains driven by complex and statistical sources. By exploiting semiclassical approximations, we provide explicit algorithms to calculate the local mean of t... Read More about Propagating wave correlations in complex systems.

Transport of phase space densities through tetrahedral meshes using discrete flow mapping (2016)
Journal Article

Discrete flow mapping was recently introduced as an efficient ray based method determin- ing wave energy distributions in complex built up structures. Wave energy densities are transported along ray trajectories through polygonal mesh elements using... Read More about Transport of phase space densities through tetrahedral meshes using discrete flow mapping.

Time domain measurement of near field emissions from complex PCBs (2016)
Conference Proceeding

This paper discusses how the measurements of the near-field emissions in the time domain can be used to characterize the broadband emissions from complex sources such as multifunctional Printed Circuit Boards (PCBs). The near- fields, transverse to t... Read More about Time domain measurement of near field emissions from complex PCBs.

Transfer operator approach for cavities with apertures (2016)
Conference Proceeding

We describe a representation of the boundary integral equations for wave propagation in enclosures which leads to a direct description of transport and dynamical characteristics of the problem. The formalism is extended to account for arbitrary and p... Read More about Transfer operator approach for cavities with apertures.

A phase-space approach for propagating field–field correlation functions (2015)
Journal Article

We show that radiation from complex and inherently random but correlated wave sources can be modelled efficiently by using an approach based on the Wigner distribution function. Our method exploits the connection between correlation functions and the... Read More about A phase-space approach for propagating field–field correlation functions.

Quantum walks and quantum search on graphene lattices (2015)
Journal Article

Quantum walks have been very useful in developing search algorithms in quantum information, in particular for devising of spatial search algorithms. However, the construction of continuous-time quantum search algorithms in two-dimensional lattices ha... Read More about Quantum walks and quantum search on graphene lattices.

Microwave experiments simulating quantum search and directed transport in artificial graphene (2015)
Journal Article

A series of quantum search algorithms have been proposed recently providing an algebraic speedup compared to classical search algorithms from N to \sqrt{N}, where N is the number of items in the search space. In particular, devising searches on regul... Read More about Microwave experiments simulating quantum search and directed transport in artificial graphene.

A boundary integral formalism for stochastic ray tracing in billiards (2014)
Journal Article

Determining the flow of rays or non-interacting particles driven by a force or velocity field is fundamental to modelling many physical processes. These include particle flows arising in fluid mechanics and ray flows arising in the geometrical optics... Read More about A boundary integral formalism for stochastic ray tracing in billiards.

Quantum search on graphene lattices (2014)
Journal Article

We present a continuous-time quantum search algorithm on a graphene lattice. This provides the sought- after implementation of an efficient continuous-time quantum search on a two-dimensional lattice. The search uses the linearity of the dispersion r... Read More about Quantum search on graphene lattices.