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Research Output 1986 2018

2018

FDTD Simulation of Very Large Domains Applied to Radar Propagation over the Ocean

Dowd, B. W. & Diaz, R., Jun 29 2018, (Accepted/In press) In : IEEE Transactions on Antennas and Propagation.

Research output: Contribution to journalArticle

Radar
Scattering
Domain decomposition methods
Boundary integral equations
Integral equations
2017
2 Citations (Scopus)

A First-Order Model of the Multiple-Feed Toroidal Magneto-Dielectric Antenna

Yousefi, T. & Diaz, R., Nov 1 2017, In : IEEE Transactions on Antennas and Propagation. 65, 11, p. 5796-5807 12 p., 8023891.

Research output: Contribution to journalArticle

Antenna feeders
Antennas
Loop antennas
Resistors
Electric lines

Closed-form model of extremely thin conformal magnetic antenna with high Gain-Bandwidth Product

Yousefi, T. & Diaz, R., Oct 18 2017, 2017 IEEE Antennas and Propagation Society International Symposium, Proceedings. Institute of Electrical and Electronics Engineers Inc., Vol. 2017-January. p. 2241-2242 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

high gain
loop antennas
Loop antennas
antennas
impedance
1 Citation (Scopus)

FDTD simulation of very large domains applied to radar propagation over the ocean

Dowd, B. & Diaz, R., Oct 18 2017, 2017 IEEE Antennas and Propagation Society International Symposium, Proceedings. Institute of Electrical and Electronics Engineers Inc., Vol. 2017-January. p. 2409-2410 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

finite difference time domain method
radar
oceans
Radar
Scattering
2016

A remotely interrogated near-field sensor for sub-λ microwave imaging

Mostafavi, M., Horvath, N., Flores, M., Mistry, N., Stephanie Smekal, M. & Diaz, R., Nov 1 2016, In : Microwave and Optical Technology Letters. 58, 11, p. 2677-2682 6 p.

Research output: Contribution to journalArticle

near fields
Microwaves
Antennas
Imaging techniques
microwaves
3 Citations (Scopus)

A Wideband Multimode Permeable Conformal Antenna Thinner Than λ/75 Using Advanced Ferromagnetic Laminate Composite Materials

Yousefi, T., Daniel, C. B., Auckland, D. T. & Diaz, R., Jan 1 2016, In : IEEE Antennas and Wireless Propagation Letters. 15, p. 1931-1934 4 p.

Research output: Contribution to journalArticle

Laminates
Antennas
Composite materials
Radiators
Defects
1 Citation (Scopus)
near fields
sensors
detectors
defects
wavelengths

Formulation of the Analytic Morphology Function for Permeability Measurements in a Resonant Stripline Cavity

Richards, E., Clavijo, S., Wheatcroft, J. & Diaz, R., Oct 1 2016, In : IEEE Transactions on Microwave Theory and Techniques. 64, 10, p. 3264-3270 7 p.

Research output: Contribution to journalArticle

cavity resonators
permeability
formulations
frequency measurement
Substrates
6 Citations (Scopus)

Why the Magnetic Loss Tangent Is Not a Relevant Constraint for Permeable Conformal Antennas

Yousefi, T., Sebastian, T. & Diaz, R., Jul 1 2016, In : IEEE Transactions on Antennas and Propagation. 64, 7, p. 2784-2796 13 p., 7452595.

Research output: Contribution to journalArticle

Magnetic leakage
Antennas
Bandwidth
Metals
Radiation
2015
4 Citations (Scopus)

Pushing the limits of radiofrequency (RF) neuronal telemetry

Yousefi, T. & Diaz, R., Jun 2 2015, In : Scientific Reports. 5, 10588.

Research output: Contribution to journalArticle

Telemetry
Magnetic Fields
Hot Temperature
Neurons
Temperature
2014
5 Citations (Scopus)

A New type of conformal antenna using magnetic flux channels

Auckland, D., Daniel, C. & Diaz, R., Jan 1 2014, Proceedings - 2014 IEEE Military Communications Conference: Affordable Mission Success: Meeting the Challenge, MILCOM 2014. Institute of Electrical and Electronics Engineers Inc., p. 372-375 4 p. 6956788

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Magnetic flux
Antennas
Tapes
Composite materials
Fluxes
1 Citation (Scopus)

Incorporating effective media in the finite-difference time-domain method for spherical nanoparticle modeling

Panaretos, A. H. & Diaz, R., Jan 1 2014, In : IEEE Transactions on Antennas and Propagation. 62, 8, p. 4381-4386 6 p., 6814828.

Research output: Contribution to journalArticle

Finite difference time domain method
finite difference time domain method
Nanoparticles
nanoparticles
cells

Physics-based sea clutter model for improved detection of low radar cross-section targets

O'Donnell, B., Lebaron, R., Diaz, R. & Papandreou-Suppappola, A., 2014, ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. Institute of Electrical and Electronics Engineers Inc., p. 6830-6833 4 p. 6854923

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Radar cross section
Physics
Maxwell equations
Gravitation
Radar
2013
6 Citations (Scopus)

A new realization of an efficient broadband conformal magnetic current dipole antenna

Sebastian, T., Clavijo, S., Diaz, R., Daniel, C. & Auckland, D., Dec 1 2013, 2013 IEEE Antennas and Propagation Society International Symposium, APSURSI 2013 - Proceedings. p. 1290-1291 2 p. 6711305

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Dipole antennas
Antennas
Tile
Ferrite
Permittivity
5 Citations (Scopus)

Electromagnetic limits to radiofrequency (RF) neuronal telemetry

Diaz, R. & Sebastian, T., Dec 18 2013, In : Scientific Reports. 3, 3535.

Research output: Contribution to journalArticle

Telemetry
Electromagnetic Phenomena
Miniaturization
Neurons
Hot Temperature
1 Citation (Scopus)

Image theory for plasmon-modified luminescence near nanospheres

Zhang, Z., Lim, D. & Diaz, R., May 30 2013, Colloidal Nanocrystals for Biomedical Applications VIII. Vol. 8595. 859508

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Nanospheres
Electromagnetic Phenomena
Luminescence
Metals
Radiation
10 Citations (Scopus)

Improved accuracy thin film permeability extraction for a microstrip permeameter

Sebastian, T., Clavijo, S. A. & Diaz, R., Jan 21 2013, In : Journal of Applied Physics. 113, 3, 033906.

Research output: Contribution to journalArticle

permeability
thin films
simulation
saturation
magnetization

Low frequency finite-difference time-domain modeling of a PEC sphere based on a quasi-analytical coupled dipole approximation

Panaretos, A. H. & Diaz, R., Jan 1 2013, In : IEEE Transactions on Antennas and Propagation. 61, 10, p. 5333-5338 6 p., 6565356.

Research output: Contribution to journalArticle

Dipole moment
dipoles
low frequencies
conduction
approximation
2011
2 Citations (Scopus)

Automated analytic continuation method for the analysis of dispersive materials

Inan, K. & Diaz, R., Apr 1 2011, In : IEEE Transactions on Antennas and Propagation. 59, 4, p. 1228-1236 9 p., 5704181.

Research output: Contribution to journalArticle

Permittivity
direct current
permittivity
bandwidth
Bandwidth
3 Citations (Scopus)

On the stability of the finite-difference time-domain modeling of lorentz media

Panaretos, A. H. & Diaz, R., Jun 1 2011, In : IEEE Microwave and Wireless Components Letters. 21, 6, p. 283-285 3 p., 5767523.

Research output: Contribution to journalArticle

Polarization
polarization
Permittivity
permittivity
Magnetic fields
4 Citations (Scopus)

On the uniqueness of the phase retrieval problem from far field amplitude-only data

Inan, K. & Diaz, R., Mar 1 2011, In : IEEE Transactions on Antennas and Propagation. 59, 3, p. 1053-1057 5 p., 5678629.

Research output: Contribution to journalArticle

uniqueness
retrieval
far fields
Experiments
Phase shift
1 Citation (Scopus)

Subcell modeling of a plasmonic Drude nanosphere

Panaretos, A. H. & Diaz, R., Nov 7 2011, Proceedings - 2011 International Conference on Electromagnetics in Advanced Applications, ICEAA'11. p. 211-214 4 p. 6046299

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Nanospheres
Finite difference time domain method
Frequency response
Materials properties
Networks (circuits)
2009
35 Citations (Scopus)

A compact and low-cost MEMS loudspeaker for digital hearing aids

Je, S. S., Rivas, F., Diaz, R., Kwon, J., Kim, J., Bakkaloglu, B., Kiaei, S., Fellow & Chae, J., Oct 2009, In : IEEE Transactions on Biomedical Circuits and Systems. 3, 5, p. 348-358 11 p.

Research output: Contribution to journalArticle

Hearing aids
Loudspeakers
MEMS
Costs
Diaphragms
4 Citations (Scopus)

Increasing coating functionality using nanodimensioned materials

Taylor, S. R., Shiflet, G. J., Scully, J. R., Buchheit, R. G., Van Ooij, W. J., Sieradzki, K., Diaz, R., Brinker, C. J. & Moran, A. L., Jun 12 2009, ACS Symposium Series. American Chemical Society, Vol. 1008. p. 126-155 30 p. (ACS Symposium Series; vol. 1008).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Coatings
Adhesion
Corrosion
Chromates
Color

In-situ catalytic growth of gallium nitride nanowires

Diaz, R., Sharma, R., Mahajan, S. & Jarvis, K., Jul 1 2009, In : Microscopy and Microanalysis. 15, SUPPL. 2, p. 1162-1163 2 p.

Research output: Contribution to journalArticle

2008
4 Citations (Scopus)

A hybrid ADI and SBTD scheme for unconditionally stable time-domain solutions of Maxwell's equations

Huang, Z., Pan, G. & Diaz, R., Feb 2008, In : IEEE Transactions on Advanced Packaging. 31, 1, p. 219-226 8 p.

Research output: Contribution to journalArticle

Maxwell equations
Sampling
Program processors
Energy gap
Direction compound
3 Citations (Scopus)

A simple and accurate methodology to optimize parameter-dependent finite-difference time-domain schemes

Panaretos, A. H. & Diaz, R., May 1 2008, In : IEEE Transactions on Microwave Theory and Techniques. 56, 5, p. 1125-1136 12 p., 4488212.

Research output: Contribution to journalArticle

methodology
Fourier series
programming
Anisotropy
bandwidth

Numerical considerations for the finite-difference time-domain modeling of scattering by plasmonic nanocylinders

Panaretos, A. H. & Diaz, R., Nov 13 2008, 2008 IEEE International Symposium on Antennas and Propagation and USNC/URSI National Radio Science Meeting, APSURSI. 4619312

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Scattering
time

On the behavior of the group velocity for dispersion optimized finite-difference time-domain schemes

Panaretos, A. H. & Diaz, R., Nov 13 2008, 2008 IEEE International Symposium on Antennas and Propagation and USNC/URSI National Radio Science Meeting, APSURSI. 4619233

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Group
time
2007

A higher order isotropic FDTD scheme using artificial dispersion via controllable higher order time derivatives

Panaretos, A. H., Diaz, R. & Aberle, J., 2007, IEEE Antennas and Propagation Society, AP-S International Symposium (Digest). p. 3716-3719 4 p. 4396346

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Derivatives
13 Citations (Scopus)
Amplification
5 Citations (Scopus)

Increasing the functionality of military coatings using nano-dimensioned materials

Taylor, S. R., Shiflet, G. J., Scully, J. R., Buchheit, R. G., VanOoij, W. J., Sieradzki, K., Diaz, R., Brinker, C. J. & Moran, A. L., 2007, In : Corrosion Reviews. 25, 5-6, p. 491-522 32 p.

Research output: Contribution to journalArticle

corrosion
multidisciplinary research
coatings
Coatings
coating

Low-profile mounting-tolerant folded-out annular slot antenna for VHF applications

Clavijo, S. A., Diaz, R. & Caswell, E., Dec 1 2007, 2007 IEEE Antennas and Propagation Society International Symposium, AP-S. p. 13-16 4 p. 4395418

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Slot antennas
Mountings
13 Citations (Scopus)
Finite difference time domain method
Maxwell equations
finite difference time domain method
Maxwell equation
operators
2006
12 Citations (Scopus)

A three-dimensional finite-difference time-domain scheme based on a transversely extended-curl operator

Panaretos, A. H., Aberle, J. & Diaz, R., Dec 2006, In : IEEE Transactions on Microwave Theory and Techniques. 54, 12, p. 4237-4246 10 p.

Research output: Contribution to journalArticle

operators
isotropy
unity
Computer simulation
simulation
141 Citations (Scopus)

Bifunctional gold-coated magnetic silica spheres

Salgueiriño-Maceira, V., Correa-Duarte, M. A., Farle, M., López-Quintela, A., Sieradzki, K. & Diaz, R., May 30 2006, In : Chemistry of Materials. 18, 11, p. 2701-2706 6 p.

Research output: Contribution to journalArticle

Silicon Dioxide
Gold
Silica
Structural design
Iron oxides
98 Citations (Scopus)

Photoluminescence quenching control in quantum dot-carbon nanotube composite colloids using a silica-shell spacer

Grzelczak, M., Correa-Duarte, M. A., Salgueiriño-Maceira, V., Giersig, M., Diaz, R. & Liz-Marzán, L. M., Feb 17 2006, In : Advanced Materials. 18, 4, p. 415-420 6 p.

Research output: Contribution to journalArticle

Carbon Nanotubes
Colloids
Silicon Dioxide
Nanocrystals
Semiconductor quantum dots
46 Citations (Scopus)

Synthesis and characterization of large colloidal cobalt particles

Salgueiriño-Maceira, V., Correa-Duarte, M. A., Farle, M., López-Quintela, M. A., Sieradzki, K. & Diaz, R., Feb 14 2006, In : Langmuir. 22, 4, p. 1455-1458 4 p.

Research output: Contribution to journalArticle

Cobalt
cobalt
borohydrides
Silicon Dioxide
synthesis
2005
265 Citations (Scopus)

Alignment of carbon nanotubes under low magnetic fields through attachment of magnetic nanoparticles

Correa-Duarte, M. A., Grzelczak, M., Salgueiriño-Maceira, V., Giersig, M., Liz-Marzán, L. M., Farle, M., Sierazdki, K. & Diaz, R., Oct 20 2005, In : Journal of Physical Chemistry B. 109, 41, p. 19060-19063 4 p.

Research output: Contribution to journalArticle

Carbon Nanotubes
Multiwalled carbon nanotubes (MWCN)
Magnetic Fields
Nanoparticles
attachment
12 Citations (Scopus)

A new multistack radiation boundary condition for FDTD based on self-teleportation of fields

Diaz, R. & Scherbatko, I., Feb 10 2005, In : Journal of Computational Physics. 203, 1, p. 176-190 15 p.

Research output: Contribution to journalArticle

finite difference time domain method
Boundary conditions
boundary conditions
Radiation
radiation
3 Citations (Scopus)

A novel Simple Anisotropic Effective Medium Method (SAEM) for modeling curved objects in cartesian FDTD mesh

Zhang, Z. & Diaz, R., Dec 1 2005, MAPE2005: IEEE 2005 International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, Proceedings. Vol. 1. p. 716-719 4 p. 1618010

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Anisotropic media
Permittivity

Classical emulation of molecular fluorescence and the modification of its quantum efficiency by nearby material structures

Diaz, R. & Lim, D., Dec 1 2005, ICEAA 2005 - 9th International Conference on Electromagnetics in Advanced Applications and EESC 2005 - 11th European Electromagnetic Structures Conference. p. 953-955 3 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Quantum efficiency
quantum efficiency
Fluorescence
fluorescence
Molecules
1 Citation (Scopus)

Electrostatics

Diaz, R., Dec 1 2005, The Electrical Engineering Handbook. Elsevier Inc., p. 499-512 14 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

Electrostatics
Fluxes
Conservation
Electric charge
Maxwell equations
5 Citations (Scopus)

Simulation of broadband double-ridged horn in high-fidelity material characterization using finite-difference time-domain method

Zhang, Z. & Diaz, R., Dec 1 2005, 2005 IEEE Antennas and Propagation Society International Symposium and USNC/URSI Meeting, Digest. Vol. 1 B. p. 561-564 4 p. 1551619

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Finite difference time domain method
Boundary conditions
1 Citation (Scopus)

Simulation of the Effective Medium Model (EMM) of the Artificial Magnetic Conductor (AMC) using the FDTD method

Clavijo, S. A. & Diaz, R., Dec 1 2005, 2005 IEEE Antennas and Propagation Society International Symposium and USNC/URSI Meeting, Digest. Vol. 1 A. p. 164-167 4 p. 1551271

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Surface waves
Antennas
Bandwidth
2004
1 Citation (Scopus)

A new hybrid FDTD field-teleportation approach for modeling radiating/scattering structures

Scherbatko, I. & Diaz, R., Dec 1 2004, p. 19-24. 6 p.

Research output: Contribution to conferencePaper

finite difference time domain method
scattering
grids
phase error
far fields
13 Citations (Scopus)

A simple stackable re-radiating boundary condition (rRBC) for FDTD

Diaz, R. & Scherbatko, I., Feb 1 2004, In : IEEE Antennas and Propagation Magazine. 46, 1, p. 124-130 7 p.

Research output: Contribution to journalArticle

Boundary conditions
Materials properties
Finite difference time domain method
Polarization
Feedback
18 Citations (Scopus)

The Gilbert-Holland FDTD thin slot model revisited: An alternative expression for the in-cell capacitance

Gkatzianas, M. A., Balanis, C. & Diaz, R., May 2004, In : IEEE Microwave and Wireless Components Letters. 14, 5, p. 219-221 3 p.

Research output: Contribution to journalArticle

Netherlands
slots
Capacitance
capacitance
cells
2003
1 Citation (Scopus)

A new radiation boundary condition for FDTD based on self-teleportation of fields

Diaz, R. & Scherbatko, I., Aug 18 2003, In : IEEE MTT-S International Microwave Symposium Digest. 3, p. 2073-2076 4 p.

Research output: Contribution to journalConference article

finite difference time domain method
Boundary conditions
boundary conditions
Radiation
radiation
137 Citations (Scopus)

Design Methodology for Sievenpiper High-Impedance Surfaces: An Artificial Magnetic Conductor for Positive Gain Electrically Small Antennas

Clavijo, S., Diaz, R. & McKinzie, W. E., Oct 1 2003, In : IEEE Transactions on Antennas and Propagation. 51, 10 I, p. 2678-2690 13 p.

Research output: Contribution to journalArticle

Surface waves
Antennas
Bandwidth
Frequency selective surfaces
Tensors