Publications 1993 2017

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  • 73 Conference contribution
  • 73 Article
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Article
2017
ferrites
Ferrite
rectangular waveguides
antennas
waveguides
2016
1 Citations

Core/Shell Iron/Oxide Nanoparticles for Improving the Magneto-Dielectric Properties of Polymer Composites

Yang, T. I., Chuang, C. Y., Yang, S. C., Kempel, L. C. & Kofinas, P. Jan 1 2016 In : Advanced Engineering Materials. 18, 1, p. 121-126 6 p.

Research output: Contribution to journalArticle

Composite materials
composite materials
Iron
Polymers
iron oxides
2 Citations

Stretchable magneto-dielectric composites based on raspberry-shaped iron oxide nanostructures

Vural, M., Gerber, O., Pichon, B. P., Lemonnier, S., Barraud, E., Kempel, L. C., Begin-Colin, S. & Kofinas, P. Mar 28 2016 In : Journal of Materials Chemistry C. 4, 12, p. 2345-2352 8 p.

Research output: Contribution to journalArticle

Nanostructures
Composite materials
Iron oxides
Fillers
Magnetite
2015
6 Citations

A multilayered metamaterial-inspired miniaturized dynamically tunable antenna

Myers, J. C., Chahal, P., Rothwell, E. & Kempel, L. Apr 1 2015 In : IEEE Transactions on Antennas and Propagation. 63, 4, p. 1546-1553 8 p., 7027210

Research output: Contribution to journalArticle

antennas
pixels
Pixels
Antennas
grids
2014
2 Citations

A hybrid vector generalized finite-element method for transient electromagnetic simulations

Tuncer, O., Shanker, B. & Kempel, L. C. Apr 3 2014 In : Electromagnetics. 34, 3-4, p. 286-297 12 p.

Research output: Contribution to journalArticle

Abdominal Injuries
finite element method
Finite element method
Galantamine
Dietary Cholesterol
1 Citations
Magnetic properties
Electric properties
Waveguides
magnetic properties
waveguides
3 Citations

Discontinuous galerkin inspired framework for vector generalized finite-element methods

Tuncer, O., Shanker, B. & Kempel, L. C. 2014 In : IEEE Transactions on Antennas and Propagation. 62, 3, p. 1339-1347 9 p., 6689302

Research output: Contribution to journalArticle

finite element method
Finite element method
Galerkin method
Galerkin methods
penalties
9 Citations

Nanostructured flexible magneto-dielectrics for radio frequency applications

Vural, M., Crowgey, B., Kempel, L. C. & Kofinas, P. Jan 28 2014 In : Journal of Materials Chemistry C. 2, 4, p. 756-763 8 p.

Research output: Contribution to journalArticle

Nanoparticles
Myosins
Heterojunctions
Composite materials
Saturation magnetization
2013
4 Citations

Characterization of biaxial anisotropic material using a reduced aperture waveguide

Crowgey, B. R., Tuncer, O., Tang, J., Rothwell, E. J., Shanker, B., Kempel, L. C. & Havrilla, M. J. 2013 In : IEEE Transactions on Instrumentation and Measurement. 62, 10, p. 2739-2750 12 p., 6544638

Research output: Contribution to journalArticle

apertures
waveguides
coefficients
Waveguides
electromagnetic properties
19 Citations

Permittivity of dielectric composite materials comprising graphene nanoribbons. the effect of nanostructure

Dimiev, A., Zakhidov, D., Genorio, B., Oladimeji, K., Crowgey, B., Kempel, L., Rothwell, E. J. & Tour, J. M. Aug 14 2013 In : ACS Applied Materials and Interfaces. 5, 15, p. 7567-7573 7 p.

Research output: Contribution to journalArticle

Composite materials
Permittivity
Methacholine Compounds
Fillers
Nanostructures
2012
19 Citations

A through-dielectric ultrawideband (UWB) switched-antenna-array radar imaging system

Charvat, G. L., Kempel, L. C., Rothwell, E. J., Coleman, C. M. & Mokole, E. L. Nov 1 2012 In : IEEE Transactions on Antennas and Propagation. 60, 11, p. 5495-5500 6 p., 6236029

Research output: Contribution to journalArticle

Antenna arrays
slabs
Radar imaging
Imaging systems
Radar
5 Citations
integral equations
Equations
acoustic scattering
sonar
method of moments
3 Citations

Tetrahedral-based vector generalized finite element method and its applications

Tuncer, O., Shanker, B. & Kempel, L. C. 2012 In : IEEE Antennas and Wireless Propagation Letters. 11, p. 945-948 4 p., 6269044

Research output: Contribution to journalArticle

Finite element method
Polynomials
Antennas
2011
41 Citations

Controlled synthesis of core-shell iron-silica nanoparticles and their magneto-dielectric properties in polymer composites

Yang, T. I., Brown, R. N. C., Kempel, L. C. & Kofinas, P. Mar 11 2011 In : Nanotechnology. 22, 10, 105601

Research output: Contribution to journalArticle

Nanoparticles
Myosins
Iron
Silica
Composite materials

Effect of curvature on the performance of a cylindrically-conformal cavity-backed E-patch antenna

Gardner, C. M., Rothwell, E. J., Kempel, L. C., Hejase, J. A., Ouedraogo, R. O. & Schneider, S. W. 2011 In : Applied Computational Electromagnetics Society Journal. 26, 11, p. 930-936 7 p.

Research output: Contribution to journalArticle

antennas
curvature
Antennas
cavities
patch antennas
43 Citations

Low-loss, high-permittivity composites made from graphene nanoribbons

Dimiev, A., Lu, W., Zeller, K., Crowgey, B., Kempel, L. C. & Tour, J. M. Dec 28 2011 In : ACS Applied Materials and Interfaces. 3, 12, p. 4657-4661 5 p.

Research output: Contribution to journalArticle

Composite materials
Methacholine Compounds
Permittivity
Fillers
Nanoribbons
2010
4 Citations

Accelerated Cartesian expansion (ACE) based framework for the rapid evaluation of diffusion, lossy wave, and Klein-Gordon potentials

Vikram, M., Baczewski, A., Shanker, B. & Kempel, L. Dec 10 2010 In : Journal of Computational Physics. 229, 24, p. 9119-9134 16 p.

Research output: Contribution to journalArticle

convolution integrals
Convolution
expansion
evaluation
costs
47 Citations

A through-dielectric radar imaging system

Charvat, G. L., Kempel, L. C., Rothwell, E. J., Coleman, C. M. & Mokole, E. L. Aug 2010 In : IEEE Transactions on Antennas and Propagation. 58, 8, p. 2594-2603 10 p., 5466037

Research output: Contribution to journalArticle

Radar imaging
Imaging techniques
Air
slabs
Continuous wave radar
22 Citations

Beam steering of a half-width microstrip leaky-wave antenna using edge loading

Archbold, M., Rothwell, E. J., Kempel, L. C. & Schneider, S. W. 2010 In : IEEE Antennas and Wireless Propagation Letters. 9, p. 203-206 4 p., 5430969

Research output: Contribution to journalArticle

Antennas
Capacitors
Capacitance
28 Citations

Comparison of uwb short-pulse and stepped-frequency radar systems for imaging through barriers

Crowgey, B. R., Rothwell, E. J., Kempel, L. C. & Mokole, E. L. 2010 In : Progress in Electromagnetics Research. 110, p. 403-419 17 p.

Research output: Contribution to journalArticle

radar
Radar
pulses
Radar imaging
Radar systems
14 Citations

Further development of vector generalized finite element method and its hybridization with boundary integrals

Tuncer, O., Lu, C., Nair, N. V., Shanker, B. & Kempel, L. C. Mar 2010 In : IEEE Transactions on Antennas and Propagation. 58, 3, p. 887-899 13 p., 5372011

Research output: Contribution to journalArticle

Finite element method
finite element method
Helmholtz equations
flexibility
inhomogeneity
19 Citations

Surfactant-modified nickel zinc iron oxide/polymer nanocomposites for radio frequency applications

Yang, T. I., Brown, R. N. C., Kempel, L. C. & Kofinas, P. Oct 2010 In : Journal of Nanoparticle Research. 12, 8, p. 2967-2978 12 p.

Research output: Contribution to journalArticle

nanocomposites
polymers
Nanocomposites
Polymers
Laryngeal Mucosa
2009
5 Citations

Broadband microstrip leaky wave antenna with inhomogeneous materials

Jiang, H., Penno, R., Pasala, K. M., Kempel, L. & Schneider, S. 2009 In : IEEE Transactions on Antennas and Propagation. 57, 5, p. 1557-1561 5 p.

Research output: Contribution to journalArticle

finite element method
antennas
propagation
Microstrip lines
Antennas
4 Citations
Anthralin
Aldrin
Abdominal Injuries
Kinetics
curing

Dielectric relaxation of curing DGEBA/mPDA system at 2.45 GHz

Zobg, L., Hawley, M. C., Sun, R. & Kempel, L. C. May 2009 In : Journal of Thermoplastic Composite Materials. 22, 3, p. 249-257 9 p.

Research output: Contribution to journalArticle

curing
temperature
Curing
Temperature
Acetanilides
2008
9 Citations

A Low-Power High-Sensitivity X-Band Rail SAR Imaging System

Charvat, G. L. & Kempel, L. C. Jun 8 2008 In : IEEE Antennas and Propagation Magazine. 50, 3, p. 108-115 8 p.

Research output: Contribution to journalArticle

rails
radar
Rails
synthetic aperture radar
superhigh frequencies
30 Citations

Conductive polymer composite materials and their utility in electromagnetic shielding applications

Fox, R. T., Wani, V., Howard, K. E., Bogle, A. & Kempel, L. Feb 15 2008 In : Journal of Applied Polymer Science. 107, 4, p. 2558-2566 9 p.

Research output: Contribution to journalArticle

Shielding
Polymers
Electromagnetic compatibility
Frontal Lobe
Enclosures
42 Citations

Magneto-dielectric properties of polymer- Fe3O4 nanocomposites

Yang, T. I., Brown, R. N. C., Kempel, L. C. & Kofinas, P. Nov 2008 In : Journal of Magnetism and Magnetic Materials. 320, 21, p. 2714-2720 7 p.

Research output: Contribution to journalArticle

nanoparticles
Nanoparticles
Myosins
polymers
surfactants
2 Citations

On the uncertainty of extracted permittivity from inhomogeneously filled rectangular waveguides

Barba, P., Bogle, A. E. & Kempel, L. C. 2008 In : IEEE Antennas and Wireless Propagation Letters. 7, p. 329-331 3 p., 928482

Research output: Contribution to journalArticle

Rectangular waveguides
Waveguides
Permittivity
1 Citations

Simulation of microstrip leaky-wave antennas on inhomogeneous substrates using transverse resonance and finite element methods

Jaramillo-Henao, C. A., Kempel, L. C. & Schneider, S. W. Jan 2008 In : Electromagnetics. 28, 1-2, p. 27-41 15 p.

Research output: Contribution to journalArticle

Antennas
antennas
Acetylcholine
Substrates
Abdominal Injuries
2007
9 Citations
Pulse generators
Fourier analysis
Electric network analyzers
Calibration
Sampling
4 Citations
Adnexal Diseases
Acetylcholine
Fourier Analysis
Tissue Adhesions
Genetic Engineering
11 Citations

Tunable permittivity of polymer composites through incremental blending of raw and functionalized single-wall carbon nanotubes

Higginbotham, A. L., Stephenson, J. J., Smith, R. J., Killips, D. S., Kempel, L. C. & Tour, J. M. Dec 6 2007 In : Journal of Physical Chemistry C. 111, 48, p. 17751-17754 4 p.

Research output: Contribution to journalArticle

permittivity
Permittivity
composite materials
Composite materials
carbon nanotubes
2006
3 Citations

E-pulse discrimination of R-cards in a layered environment

Rothwell, E. J., Kempel, L. C. & Frasch, L. L. Jul 2006 In : IEEE Transactions on Antennas and Propagation. 54, 7, p. 2175-2178 4 p.

Research output: Contribution to journalArticle

36 Citations

Method of moments solution for a printed patch/slot antenna on a thin finite dielectric substrate using the volume integral equation

Makarov, S. N., Kulkarni, S. D., Marut, A. G. & Kempel, L. C. Apr 2006 In : IEEE Transactions on Antennas and Propagation. 54, 4, p. 1174-1184 11 p.

Research output: Contribution to journalArticle

Integral equations
Microstrip antennas
Substrates
Slot antennas
Method of moments
1 Citations

Mixed element formulation for the finite element-boundary integral method

Meese, J., Kempel, L. C. & Schneider, S. W. Mar 2006 In : Applied Computational Electromagnetics Society Journal. 21, 1, p. 51-62 12 p.

Research output: Contribution to journalArticle

boundary integral method
prisms
cavities
Prisms
radar cross sections
7 Citations

Radiation by a linear array of half-width leaky-wave antennas

Killips, D., Radcliffe, J., Kempel, L. & Schneider, S. Nov 2006 In : Applied Computational Electromagnetics Society Journal. 21, 3, p. 248-254 7 p.

Research output: Contribution to journalArticle

antennas
Antennas
Radiation
Traveling wave antennas
Microstrip antennas
31 Citations

Synthetic aperture radar imaging using a unique approach to frequency-modulated continuous-wave radar design

Charvat, G. L. & Kempel, L. C. Feb 2006 In : IEEE Antennas and Propagation Magazine. 48, 1, p. 171-177 7 p.

Research output: Contribution to journalArticle

Continuous wave radar
Synthetic aperture radar
Radar imaging
Transceivers
Costs
8 Citations
Adnexal Diseases
Fourier Analysis
Acetylcholine
Ethylene Chlorohydrin
Tissue Adhesions
2005
8 Citations

Dielectric properties of an epoxy-amine system at a high microwave frequency

Zong, L., Zhou, S., Sgriccia, N., Hawley, M. C., Sun, R. & Kempel, L. C. Dec 2005 In : Polymer Engineering and Science. 45, 12, p. 1576-1580 5 p.

Research output: Contribution to journalArticle

Acetanilides
Dielectric properties
Temperature
Anthralin
N-Acetylmuramoyl-L-alanine Amidase
17 Citations

Dielectric studies of three epoxy resin systems during microwave cure

Zong, L., Kempel, L. C. & Hawley, M. C. Mar 24 2005 In : Polymer. 46, 8, p. 2638-2645 8 p.

Research output: Contribution to journalArticle

Anthralin
Acetanilides
Epoxy resins
Temperature
N-Acetylmuramoyl-L-alanine Amidase
19 Citations

Electromagnetic material characterization using a partially-filled rectangular waveguide

Bogle, A., Havrilla, M., Nyquis, D., Kempel, L. & Rothwell, E. 2005 In : Journal of Electromagnetic Waves and Applications. 19, 10, p. 1291-1306 16 p.

Research output: Contribution to journalArticle

Buccal Administration
Traffic Accidents
Waveguide
waveguides
Material characterization

Electromagnetic modeling of an adaptable multimode microwave applicator for polymer processing

Sun, R., Kempel, L. C., Zong, L., Zhou, S. & Hawley, M. C. Mar 2005 In : Applied Computational Electromagnetics Society Journal. 20, 1, p. 43-48 6 p.

Research output: Contribution to journalArticle

cavities
Applicators
Electric fields
electromagnetism
electric fields
2004
25 Citations

Dielectric analysis of a crosslinking epoxy resin at a high microwave frequency

Zong, L., Zhou, S., Sun, R., Kempel, L. C. & Hawley, M. C. Aug 1 2004 In : Journal of Polymer Science, Part B: Polymer Physics. 42, 15, p. 2871-2877 7 p.

Research output: Contribution to journalArticle

epoxy resins
crosslinking
curing
dielectric properties
Epoxy resins
14 Citations

Modeling conformal antennas on metallic prolate spheroid surfaces using a hybrid finite element method

Macon, C. A., Kempel, L. C., Schneider, S. W. & Trott, K. D. Mar 2004 In : IEEE Transactions on Antennas and Propagation. 52, 3, p. 750-758 9 p.

Research output: Contribution to journalArticle

Slot antennas
Microstrip antennas
Antennas
Mountings
Green's function
82 Citations

Switchable low-loss RF MEMS Ka-band frequency-selective surface

Schoenlinner, B., Abbaspour-Tamijani, A., Kempel, L. C. & Rebeiz, G. M. Nov 2004 In : IEEE Transactions on Microwave Theory and Techniques. 52, 11, p. 2474-2481 8 p.

Research output: Contribution to journalArticle

MEMS
microelectromechanical systems
Frequency selective surfaces
selective surfaces
Cooling
2003
9 Citations

A practical approach to modeling doubly curved conformal microstrip antennas

Macon, C. A., Trott, K. D. & Kempel, L. C. 2003 In : Progress in Electromagnetics Research. 40, p. 295-314 20 p.

Research output: Contribution to journalArticle

patch antennas
curved surfaces
microstrip antennas
antennas
Microstrip antennas
1 Citations

A practical approach to modeling doubly curved conformal microstrip antennas-abstract

Macon, C. A., Trott, K. D. & Kempel, L. C. 2003 In : Journal of Electromagnetic Waves and Applications. 17, 8, p. 1161-1163 3 p.

Research output: Contribution to journalArticle

patch antennas
curved surfaces
microstrip antennas
antennas
Azetidinecarboxylic Acid
60 Citations

A Review of Microwave-Assisted Polymer Chemistry (MAPC)

Zong, L., Zhou, S., Sgriccia, N., Hawley, M. C. & Kempel, L. C. 2003 In : Journal of Microwave Power and Electromagnetic Energy. 38, 1, p. 49-74 26 p.

Research output: Contribution to journalArticle

Microwaves
microwaves
Polymers
Accessory Nerve
polymers
30 Citations

E-Pulse Diagnostics of Simple Layered Materials

Stenholm, G. J., Rothwell, E. J., Nyquist, D. P., Kempel, L. C. & Frasch, L. L. Dec 2003 In : IEEE Transactions on Antennas and Propagation. 51, 12, p. 3221-3227 7 p.

Research output: Contribution to journalArticle

Permittivity