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Manuel J. Freire Department of Electronics and Electromagnetism University of Seville |
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| Biography |
Manuel J. Freire was born in Cádiz (Spain) in 1972. He received the Licenciado degree in Physics in 1995, and the Ph. D. degree in Physics in 2000, both from the University of Seville (Spain). From 1995 through 1996 he served in the Royal Naval Observatory of the Spanish Navy in San Fernando, Cádiz. In 1996 he joined the Microwave Group of the Department of Electronics and Electromagnetics, University of Seville. In 1998 he was a visiting researcher in the Department of Electrical and Computer Engineering, University of Houston, Texas. Since 1999 to 2004 he was Assistant Professor in the Department of Electronics and Electromagnetics, University of Seville, and Associate Professor since 2004. Dr. Freire is Senior Member of the IEEE. His research interests include leakage in microwave planar circuits, magnetostatic wave propagation in ferrite devices, frequency selective surfaces and subwavelength imaging with metamaterials for magnetic resonance imaging applications. He is reviewer for the following international journals: Journal of Applied Physics, Applied Physics Letters, IEEE Transactions on Microwave Theory and Techniques, IEE Proceedings Microwaves Antennas and Propagation, IEE Proceedings Devices Circuits and Systems, Optics Communications, Optics Express, Metamaterials, Journal of Selected Topic in Quantum Electronics, PIER & JEWA, Applied Physics A, Int. Journal on RF and Microwave CAE and IEEE Sensors Journal.
| News |
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| Publications |
1998-2002:
"Power
Characteristics of Complex Modes in Both Reciprocal and Nonreciprocal Boxed Microstrip Lines". Manuel J. Freire,
Francisco Mesa, Manuel Horno.
"Study
of the Excitation of Nonreciprocal Complex and Backward Modes in Shielded
Ferrite-Loaded Printed Lines". Manuel J. Freire,
Francisco Mesa, Manuel Horno.
Journal of Electromagnetic Waves and
Applications, vol. 12, 1319-1334, October
1998.
"Excitation
of Complex and Backward Modes on Shielded Lossless Printed Lines". Manuel J. Freire,
Francisco Mesa, Manuel Horno.
"Spurious Transmission Effects due to the Excitation of the
Bound Mode and the Continuous Spectrum on Stripline with an Air
Gap".
Manuel J. Freire, Francisco Mesa, Carlo Di Nallo, David
R. Jackson, Arthur A. Oliner.
"An
Excitation Theory for Bound Modes, Leaky Modes and Residual-wave Currents on
Stripline Structures". David R. Jackson, Francisco
Mesa, Manuel J. Freire, Dennis P. Nyquist, Carlo Di Nallo.
"The
Influence of a Top Coveron the Leakage
from Microstrip Line". Francisco Mesa, Arthur A. Oliner, David R. Jackson, Manuel J. Freire.
"High
frequency leaky-mode excitation on microstrip line". Francisco Mesa, David R. Jackson,
Manuel J. Freire.
"Evolution
of Leaky Modes on Printed-Circuit Lines". Francisco Mesa
, David R. Jackson, Manuel J. Freire.
2003-2005:
"Full-wave
Analysis of the Excitation of Magnetostatic-Surface Waves by a semi-infinite
microstrip transducer: theory and experiment".
Manuel J. Freire,
Ricardo Marqués, Francisco Medina.
"Insertion
Loss of Magnetostatic Surface-Wave transducer: transmission line model and
experiment". Manuel J. Freire, Ricardo Marqués, Francisco Medina.
"New
Method for the Efficient Summation of Double Infinite Series Arising from the
Spectral Domain Analysis of Frequency Selective Surfaces". Rafael
R. Boix, Manuel J. Freire, Francisco Medina.
"Quasi-TEM
model of the magnetostatic-surface wave excitation of microstrip
lines". José
Aguilera, Manuel J. Freire, Ricardo Marqués, Francisco
Medina.
"Planar
magnetoinductive wave transducers: theory and applications". Manuel J. Freire, Ricardo Marqués, Francisco
Medina.
"Three Dimensional Super-Resolution in Metamaterial Slab Lenses". Francisco Mesa, Manuel J. Freire, Ricardo Marqués, Juan D. Baena. Physical Review B, 72, 23517, 2005.
2006-2010:
"Electroinductive waves in chains of complementary
resonant elements". Miguel Beruete,
Francisco Falcone, Manuel J. Freire, Ricardo Marqués, Juan D. Baena.
"Resonance and Cross-Polarization Effects in Conventional and Complementary Split Ring Resonator Periodic Screens". Miguel Beruete, Mario Sorolla, Ricardo Marqués, Juan D. Baena,Manuel J. Freire. Electromagnetics, vol. 26, no. 3-4, 247-260, April-June 2006.
"Near-field imaging in the Megahertz range by strongly-coupled magnetoinductive surfaces: experiment and ab initio analysis". Manuel J. Freire, Ricardo Marqués. Journal of Applied Physics, 100, 063105, 2006.
"Theory of three-dimensional sub-diffraction imaging". Ricardo Marqués, Manuel J. Freire, Juan D. Baena. Applied Physics Letters, vol. 89, 211113, 2006.
"Optimizing the magnetoinductive lens: improvement, limits and possible applications". Manuel J. Freire, Ricardo Marqués. Journal of Applied Physics, 103, 013115, 2008.
"Experimental demonstration of a m=−1 metamaterial lens for magnetic resonance imaging". Manuel J. Freire, Ricardo Marqués, Lukas Jelinek. Applied Physics Letters, vol. 93, 231108, 2008.
"Analytical circuit model for split ring resonators in the far infrared and optical frequency range". V. Delgado, O. Sydoruk, E. Tatartschuk, R. Marqués, M.J. Freire, L. Jelinek. Metamaterials, 3 57, 2009.
"Microwave-induced water flows in microsystems". Antonio Ramos, Angela Robles, Pablo García-Sánchez y Manuel J. Freire. Applied Physics Letters, vol. 94, 024104, 2009.
"Accurate modeling of split ring metamaterial lenses for magnetic resonance imaging applications". Lukas Jelinek, Ricardo Marqués and Manuel J. Freire. Journal of Applied Physics, 105, 024907, 2009.
"Water flows induced by microwave electric fields in microsystems". Antonio Ramos, Pablo García-Sánchez, Andrea Robles, Manuel J. Freire. Journal of Electrostatics, 67, 377, 2009.
"On the applications of m=-1 metamaterial lenses for magnetic resonance imaging". Manuel J. Freire, Lukas Jelinek, Ricardo Marqués. Journal of Magnetic Resonance, 203, 81-90, 2010.
"Exact modelling method for discrete finite metamaterial lens". Mikhail Lapine, Lukas Jelinek, Ricardo Marqués, Manuel J. Freire. IET Microwave, Antennas and Propagation, vol 4, Iss. 8, 1132-1139, 2010.
"Realistic metamaterial lenses: Limitations imposed by discrete structure". Mikhail Lapine, Lukas Jelinek, Manuel J. Freire, Ricardo Marqués. Physical Review B, 82, 165124, 2010.
2011-2013:
"Analysis of the resolution of split-ring metamaterial lenses with application in parallel magnetic resonance imaging". José M. Algarín, Manuel J. Freire, Marcos A. López, Mikhail Lapine, Peter M. Jakob, Volker C. Behr, Ricardo Marqués. Applied Physics Letters, vol. 98, 014105, 2011.
"Demonstration of negative refraction of microwaves". María C. Velázquez-Ahumada, Manuel J. Freire, José M. Algarín, Ricardo Marqués, American Journal of Physics, 79, no.4, 349, 2011.
"Nonlinear split-ring metamaterial slabs for magnetic resonance imaging". Marcos A. López, Manuel J. Freire, José M. Algarín, Volker C. Behr, Peter M. Jakob, Ricardo Marqués. Applied Physics Letters, vol. 98, 133508, 2011.
"Comparative analysis of the transfer function of closed and open split-ring metamaterial slab lenses". José M. Algarín, Manuel J. Freire, R. Marqués. Metamaterials, 5, 107, July 2011.
"Microwave-induced water flow in a microchannel built on a coplanar waveguide". A. Khayari, M. Medrano, M.C. Velazquez-Ahumada, M.J. Freire, A. Ramos. Journal of Applied Physics, vol. 110, 064912, September 2011.
"Bulk metamaterials made of resonant rings". Ricardo Marques, Lukas Jelinek, Manuel J. Freire, Juan D. Baena, Mikhail Lapine. Proceedings of the IEEE, vol. 99, No. 10, 1660, October 2011.
"Signal-to-noise ratio evaluation in resonant ring metamaterial lenses for MRI applications". José M. Algarín, Marcos A. López, Manuel J. Freire, Ricardo Marques. New Journal of Physics, vol. 13, 115006, November 2011.
"Super-resolution for a point source better than l/500 using positive refraction". Juan C. Miñano, Ricardo Marques, Juan C. González, Pablo Benítez, Vicente Delgado, Dejan Grabovickic, Manuel Freire. New Journal of Physics, vol. 13, 125009, December 2011.
"Metamaterial focusing device for microwave hyperthermia". Maria C. Velazquez-Ahumada, Manuel J. Freire, Ricardo Marques. Microwave and Optical Technology Letters, vol. 53, No. 12, 2868, December 2011.
"Image acceleration in parallel magnetic resonance imaging by means of metamaterial magnetoinductive lenses". Manuel J. Freire, Marcos A. Lopez, Jose M. Algarin, Felix Breuer, Ricardo Marques. AIP Advances, vol. 2, 022136, May 2012.
"A broadside-split-ring resonator-based coil for MRI at 7T". Manuel J. Freire, Marcos A. Lopez, Florian Meise, Jose M. Algarin, Peter M. Jakob, Michael Bock, Ricardo Marques. IEEE Transactions on Medical Imaging, vol. 32 No. 6, 1081, June 2013.
"Metamaterial lens performance as a function of field strength". Jose M. Algarin, Manuel J. Freire, Felix Breuer, Volker C. Behr. Journal of Magnetic Resonance, 247, 9-14, 2014.
| Patents |
"Líneas de retardo y multiplexores de microondas basados en transductores de ondas magnetoinductivas y/o electroinductivas en tecnología planar". Nº de solicitud: P200401503.Pais de prioridad: España. Fecha de prioridad: 19 de Junio de 2004. Entidades titulares: Universidad de Sevilla, Universidad Pública de Navarra, Universidad Autónoma de Barcelona.
"Lente de campo cercano para ondas electromagneticas". Nº de solicitud: P200402998. Pais de prioridad: España. Fecha de prioridad: 10 de Diciembre de 2004. Entidades titulares: Universidad de Sevilla.
"Filtros planares de microondas y de ondas milimétricas basados en etapas acopladas que contienen resonadores de anillos abiertos". Nº de solicitud: P200403096. Fecha de prioridad: 28 de Diciembre de 2004. Pais de prioridad: España. Entidades titulares: Universidad de Sevilla, Universidad Pública de Navarra, Universidad Autónoma de Barcelona.
"Dispositivo para mejorar la sensibilidad de las bobinas receptoras en imágenes médicas por resonancia magnética". Nº de solicitud P200802331. Patente con extensión internacional. Entidades titulares: Universidad de Sevilla.
"Dispositivo para la demostración experimental de la refracción negativa a la frecuencia de microondas orientado a la enseñanza de los metamateriales". Nº de solicitud: P201000927. Fecha de prioridad: 15 de Julio de 2010. Pais de prioridad: España. Entidades titulares: Universidad de Sevilla.
| Contracts |
Project title: "Design and development of an isotropic sensor for simultaneous measurement of electric and magnetic fields at extremely low frequencies".
Contract type: Contract 68/83, through "Fundación de Investigación de la Universidad de Sevilla" (FIUS)
Company: Wavecontrol S.L. (Barcelona, Spain)
Project title: "Characterization of an isotropic sensor for simultaneous measurement of electric and magnetic fields at extremely low frequencies".
Contract type: Contract 68/83, through "Fundación de Investigación de la Universidad de Sevilla" (FIUS)
Company: Wavecontrol S.L. (Barcelona, Spain)
Project title: "Design and development of an experimental setup for the demonstration of negative refraction of microwaves".
Contract type: Contract 68/83, through "Fundación de Investigación de la Universidad de Sevilla" (FIUS)
Company: Manchester College, Physics Department (North Manchester, Indiana, USA)