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Research Output 1986 2018

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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
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
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
2013
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
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
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

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
2007
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
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
2004
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
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

Fabrication of microbowtie structures for optical probing of nanoscale objects

Tseng, A. A., Diaz, R., Chen, C. D. & Wu, C. S., May 1 2003, In : Microsystem Technologies. 9, 5, p. 335-339 5 p.

Research output: Contribution to journalArticle

Fabrication
fabrication
probes
Substrates
Electron beam lithography
17 Citations (Scopus)

Perfect plane-wave injection into a finite FDTD domain through teleportation of fields

Watts, M. E. & Diaz, R., Dec 1 2003, In : Electromagnetics. 23, 2, p. 187-201 15 p.

Research output: Contribution to journalArticle

plane waves
injection
grids
Program processors
incidence
2002
3 Citations (Scopus)

Electron beam lithography of microbowtie structures for next-generation optical probe

Tseng, A. A., Chen, C. D., Wu, C. S., Diaz, R. & Watts, E., Dec 1 2002, In : Journal of Microlithography, Microfabrication and Microsystems. 1, 2, p. 123-135 13 p.

Research output: Contribution to journalArticle

Electron beam lithography
lithography
electron beams
near fields
probes
1 Citation (Scopus)

Fabrication of microbowtie structures using electron-beam lithography for a new optical probe

Tseng, A. A., Chen, C. D., Wu, C. S. & Diaz, R., Jan 1 2002, In : Proceedings of SPIE - The International Society for Optical Engineering. 4688, 2, p. 850-857 8 p.

Research output: Contribution to journalArticle

Electron Beam Lithography
Electron beam lithography
Fabrication
Probe
lithography
3 Citations (Scopus)

Semi-empirical model of light scattering from submicron pyramidal pits

Jordan, M., Diaz, R. & Hirleman, E. D., Jan 1 2002, In : Optical Engineering. 41, 2, p. 518-528 11 p.

Research output: Contribution to journalArticle

Light scattering
light scattering
Crystals
wafers
Silicon wafers
2001

Analytical, first-order model of light scattering from submicron pyramidal pits

Jordan, M., Diaz, R. & Hirleman, E. D., Jan 1 2001, In : Proceedings of SPIE - The International Society for Optical Engineering. 4275, p. 138-146 9 p.

Research output: Contribution to journalArticle

Light Scattering
Light scattering
light scattering
Wafer
First-order
2000
12 Citations (Scopus)

Novel material with narrow-band transparency window in the bulk

Kyriazidou, C. A., Diaz, R. & Alexöpoulos, N. G., Jan 1 2000, In : IEEE Transactions on Antennas and Propagation. 48, 1, p. 107-116 10 p.

Research output: Contribution to journalArticle

Transparency
Geometry
Frequency selective surfaces
Anechoic chambers
Polarization
1999
112 Citations (Scopus)

Effective medium theories for artificial materials composed of multiple sizes of spherical inclusions in a host continuum

Merrill, W. M., Diaz, R., Lore, M. M., Squires, M. C. & Alexopoulos, N. G., Jan 1 1999, In : IEEE Transactions on Antennas and Propagation. 47, 1, p. 142-148 7 p.

Research output: Contribution to journalArticle

inclusions
continuums
Induced currents
Volume fraction
permeability
1998
31 Citations (Scopus)

Analytic framework for the modeling of effective media

Diaz, R., Merrill, W. M. & Alexopoulos, N. G., Dec 15 1998, In : Journal of Applied Physics. 84, 12, p. 6815-6826 12 p.

Research output: Contribution to journalArticle

binary mixtures
electromagnetic properties
fillers
poles
magnetic permeability
11 Citations (Scopus)

A Time-Domain Vector Potential Formulation for the Solution of Electromagnetic Problems

De Flaviis, F., Noro, M. G., Diaz, R., Franceschetti, G. & Alexopoulos, N. G., Sep 1 1998, In : IEEE Microwave and Guided Wave Letters. 8, 9, p. 310-312 3 p.

Research output: Contribution to journalArticle

electromagnetism
formulations
Finite difference time domain method
Maxwell equations
Electric fields
6 Citations (Scopus)

Extensions to complex materials of the fitzgerald model for the solution of electromagnetic problems

Flaviis De, F., Diaz, R., Alexopoulos, N. G., Noro, M. G. & Franceschetti, G., Jan 1 1998, In : Electromagnetics. 18, 1, p. 35-65 31 p.

Research output: Contribution to journalArticle

electromagnetism
formulations
pulleys
Hamiltonians
Pulleys
4 Citations (Scopus)

The application of the analytic continuation model of dispersive materials to electromagnetic engineering

Diaz, R. & Alexopoulos, N. G., Jan 1 1998, In : Electromagnetics. 18, 4, p. 395-422 28 p.

Research output: Contribution to journalArticle

engineering
electromagnetism
Networks (circuits)
electromagnetic properties
versatility
1997
24 Citations (Scopus)

An analytic continuation method for the analysis and design of dispersive materials

Diaz, R. & Alexopoulos, N. G., Dec 1 1997, In : IEEE Transactions on Antennas and Propagation. 45, 11, p. 1602-1610 9 p.

Research output: Contribution to journalArticle

Permittivity
permittivity
dielectric polarization
half planes
Transparency
7 Citations (Scopus)

A recasting of the effective parameters of composite mixtures into the language of artificial dielectrics

Merrill, W. M., Diaz, R. & Alexopoulos, N. G., Jul 1 1997, In : Physica A: Statistical Mechanics and its Applications. 241, 1-2, p. 334-337 4 p.

Research output: Contribution to journalArticle

Permittivity
Composite
permittivity
RLC circuits
composite materials
34 Citations (Scopus)

Reflection and transmission of waves from multilayer structures with planar-implanted periodic material blocks

Yang, H. Y. D., Diaz, R. & Alexopoulos, N. G., Jan 1 1997, In : Journal of the Optical Society of America B: Optical Physics. 14, 10, p. 2513-2521 9 p.

Research output: Contribution to journalArticle

laminates
plane waves
reflectometers
method of moments
reflected waves
1986
7 Citations (Scopus)
strip transmission lines
Electric lines
Green's function
configurations
conformal mapping