60f Batlle Gelabert, Xavier [WorldCat Identities]
WorldCat Identities

Batlle Gelabert, Xavier

Overview
Works: 13 works in 31 publications in 3 languages and 27 library holdings
Roles: Author
Publication Timeline
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Most widely held works by Xavier Batlle Gelabert
Estudis de ferrites hexagonals dopades amb Co2+ i òxids de Ni tipus La2NiO4 by Xavier Batlle Gelabert( Book )

5 editions published between 1990 and 2009 in Catalan and held by 4 WorldCat member libraries worldwide

Propiedades magnéticas de materiales nanoestructurados : vidrios metálicos recristalizados y partículas pequeñas de hexaferrita by Montserrat García del Muro y Solans( Book )

3 editions published between 1997 and 2009 in Spanish and held by 3 WorldCat member libraries worldwide

Laboratori de mecànica by Xabier Batllé i Gelabert( Book )

3 editions published in 1999 in Catalan and held by 3 WorldCat member libraries worldwide

Synthesis and characterization of high quality iron oxide nanoparticles of controlled size, shape and magnetic properties by Pablo Guardia Girós( )

2 editions published in 2009 in English and held by 2 WorldCat member libraries worldwide

Nanostructure effects on the magnetic properties of magnetite nanoparticles : from synthesis to applications in biomedicine by Nicolás Pérez Rodríguez( )

2 editions published in 2012 in English and held by 2 WorldCat member libraries worldwide

Magnetocaloric effect in Gd5(SixGe1-x)4 alloys by Fèlix Casanova i Fernàndez( Book )

3 editions published in 2004 in English and held by 2 WorldCat member libraries worldwide

Mecànica i ones by Xavier Batlle i Gelabert( Book )

2 editions published in 1999 in Catalan and held by 2 WorldCat member libraries worldwide

Mecànica i ones( Book )

2 editions published in 2006 in Catalan and held by 2 WorldCat member libraries worldwide

Exchange bias in Ni/FeF2 thin films and nanostructures by Miroslavna Kovylina( )

2 editions published in 2011 in English and held by 2 WorldCat member libraries worldwide

Nanofabrication, simulation and optical characterization of plasmonic nanostructures by Ana Conde Rubio( Book )

2 editions published in 2018 in English and held by 2 WorldCat member libraries worldwide

This thesis is devoted to the nanofabrication, simulation and optical characterization of different plasmonic nanostructures. When an electromagnetic wave reaches a metallic nanostructure, it can give rise to collective oscillations of the free electrons in the metal. These oscillations reach a maximum at the so-called surface plasmon resonance, whose intensity and frequency depend in the material, geometry, embedding medium, interparticle interactions, etc. Based on the tunability of core-shell nanoparticles, hollow cylindrical gold nanostructures (nanocups) have been fabricating using a combination of nanoimprint lithography (NIL) and non-directional metallization. Besides, to overcome the high-aspect ratio limitations of NIL, a trilayer stack (resist-oxide­resist) has been used in such a way that the bottom resist layer, which controls the height of the nanostructure, is not affected by the lithography, which takes place only in the top resist layer. Also, the fabrication method allows for easy changes in the geometry: the height can be changed by changing the thickness of the bottom resist layer, the thickness by modifying the amount of deposited material and the diameter by changing the etching time. By hanging the geometric parameters of the nanostructures, the plasmonic properties can be easily tuned. Besides, for certain dimensions (400 nm in diameter and height and 30 nm of Wall and base thickness), these structures present a peak in the extinction spectra in the visible range that corresponds to a concentration of the electric field within the cavity. This excitation mode has also been reported for other nanostructures with semispherical symmetry. However, the fact of being cylindrical enables a homogeneous enhancement of the electric field along the cavity while in the other case this is not possible due to the lack of symmetry. Also, based on geometrically frustrated magnetic systems, three particular cases of hexagonal lattices of plasmonic nanoelements have been studied. All of them have been designed so that the pitch is of the order of the resonance wavelength and the gaps between elements small enough to enable near-field coupling. Besides, a metal-insulator-metal configuration has been implemented, designed to have constructive interference, which leads to high absorption peaks. The samples have been fabricated by electron beam lithography to be able to change easily the design and study the optical response as a function of the geometries. Both simulation and spectroscopy results show that all these systems present high absorption peaks in the visible and/or near infrared. Also, they present a broad absorption peak in the NIR due to the dipolar excitation of the gaps between neighboring elements and sharper peaks in the visible that are assigned to collective modes. Moreover, these systems present an extended time response where the system fluctuates between collective and localized modes. This behavior, characteristic from magnetic frustrated systems, is induced by the frustration of the dipolar excitation of the gaps due to the geometry of the lattice. Besides, the collective modes give rise to enhancements of the electric field in large areas, making these systems of interest for enhanced spectroscopies
El estado mixto en los cupratos superconductores electrónicos by Ma. Lourdes Fàbrega Sánchez( Book )

2 editions published in 1993 in Spanish and held by 1 WorldCat member library worldwide

Desarrollo de un sistema de medida del coeficiente Seebeck : transporte eléctrico en óxidos de Ni : memoria by Xavier Granados García( Book )

2 editions published in 1993 in Spanish and held by 1 WorldCat member library worldwide

Magnetoresistance in granular alloys : from non-interacting particles to magnetic percolation by Víctor Puntes( )

1 edition published in 1998 in English and held by 1 WorldCat member library worldwide

 
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Alternative Names
Batlle Gelabert, X.

Batlle i Gelabert, Xavier

Batlle, Xavier

Xavier Batlle wetenschapper

Languages
English (12)

Catalan (12)

Spanish (7)