GRPFM - Grup de Recerca en Propietats Físiques dels Materials
El grup de recerca desenvolupa la seva activitat en dos vessants de la ciència dels materials. D'una banda estudia el comportament tèrmic dels aliatges ferromagnètics i de l'altra, les propietats estàtiques i dinàmiques de materials dielèctrics complexos formats per cristalls líquids i cristalls líquids confinats en sistemes micro i nanoestructurals.
El grupo de investigación desarrolla su actividad en dos aspectos de la ciencia de materiales. Por una parte, estudia el comportamiento térmico de las aleaciones ferromagnéticas y por otra, las propiedades estáticas y dinámicas de materiales dieléctricos complejos formados por cristales líquidos y cristales líquidos confinados en sistemas micro y nanoestructurados.
The research group develops its activity in two basic aspects from teh materials science. On the one hand, the group studies the thermal behaviour of ferromagnetic alloys and ono the other, the static and dynami properties of complex dielectric materials made up of liquid crystals and liquids crystrals confined to micro and nanostructured systems.
The research group develops its activity in two basic aspects from teh materials science. On the one hand, the group studies the thermal behaviour of ferromagnetic alloys and ono the other, the static and dynami properties of complex dielectric materials made up of liquid crystals and liquids crystrals confined to micro and nanostructured systems.
Col·leccions
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Articles de revista [18]
Enviaments recents
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Cooperative behavior of molecular motions giving rise to two glass transitions in the same supercooled mesophase of a smectogenic liquid crystal dimer
(American Chemical Society (ACS), 2018-01-17)
Article
Accés restringit per política de l'editorialIn the present work, a detailed analysis of the glassy behavior and the relaxation dynamics of the liquid crystal dimer a-(4-cyanobiphenyl-4'-yloxy)-¿-(1-pyrenimine-benzylidene-4'-oxy) heptane (CBO7O.Py) throughout both ... -
Influence of internal flexibility on the double glass transition in a series of odd non-symmetric liquid crystal dimers characterised by dielectric measurements
(2017-04-11)
Article
Accés obertDielectric measurements (thermally stimulated depolarisation currents and broadband dielectric spectroscopy) have been performed near the glass transition to study the glass transition on the odd non-symmetric liquid crystal ... -
Influence of liquid crystalline phases on the tunability of a random laser
(American Chemical Society (ACS), 2017-05-30)
Article
Accés restringit per política de l'editorialIn this paper, we report the temperature behavior of an optimized disordered photonic system-based liquid crystal by means of heat capacity and refractive index measurements. The scattering system is formed by a porous ... -
Distinctive dielectric properties of nematic liquid crystal dimers
(2017-01-01)
Article
Accés obertWe provide an overview of the effect of the molecular structure on the dielectric properties of dimers exhibiting nematic and twist-bend nematic phases with special focus on how the conformational distribution changes are ... -
Explosion of white dwarfs harboring hybrid CONe cores
(EDP Sciences, 2016-04-12)
Article
Accés obertRecently, it has been found that off-center carbon burning in a subset of intermediate-mass stars does not propagate all the way to the center, resulting in a class of hybrid CONe cores. The implications of a significant ... -
Gamma-ray emission from SN2014J near maximum optical light
(EDP Sciences, 2016-04)
Article
Accés obertContext. The optical light curve of Type Ia supernovae (SNIa) is powered by thermalized gamma-rays produced by the decay of 56Ni and 56Co, the main radioactive isotopes synthesized by the thermonuclear explosion of a C/O ... -
Gamma rays from Type Ia supernova SN 2014j
(2015-10-08)
Article
Accés obertThe whole set of INTEGRAL observations of Type Ia supernova SN 2014J, covering the period 19–162 days after the explosion, has been analyzed. For spectral fitting the data are split into early and late periods covering ... -
A Chandrasekhar mass progenitor for the type Ia supernova remnant 3C 397 from the enhanced abundances of nickel and manganese
(2015-03-12)
Article
Accés restringit per política de l'editorialDespite decades of intense efforts, many fundamental aspects of Type Ia supernovae (SNe Ia) remain elusive. One of the major open questions is whether the mass of an exploding white dwarf (WD) is close to the Chandrasekhar ... -
Dielectric, calorimetric and mesophase properties of 1 ''-(2 ',4-difluorobiphenyl-4 '-yloxy)-9 ''-(4-cyano-biphenyl-4 '-yloxy) nonane: an odd liquid crystal dimer with a monotropic mesophase having the characteristics of a twist-bend nematic phase
(2014-10-21)
Article
Accés restringit per política de l'editorialThis paper reports a novel liquid crystal phase having the characteristics of a twist-bend nematic phase formed by a non-symmetric ether-linked liquid crystal dimer. The dimer 1 ''-(2',4-difluorobiphenyl-4'-yloxy)-9 ... -
Bent-rod liquid crystal dimers: synthesis and mesomorphic properties
(Royal Society of Chemistry, 2014-01-01)
Article
Accés restringit per política de l'editorialThe synthesis and characterization of three bent-rod dimers are reported. Very long flexible spacers that include methylene units and either a phenyl ring or a triazole moiety as connecting structures join the bent-and ... -
Dispersion of gamma-alumina nano-sized spherical particles in a calamitic liquid Crystal. Study and optimization of the confinement effects
(2014-03-01)
Article
Accés obertWe report an experimental study on confined systems formed by butyloxybenzylidene octylaniline liquid crystal (4O.8) + gamma-alumina nanoparticles. The effects of the confinement in the thermal and dielectric properties ... -
Distortion-sensitive insight into the pretransitional behavior of 4-n-octyloxy-4 '-cyanobiphenyl (8OCB)
(Institute Of Physics Publishing Ltd, 2013-06)
Article
Accés restringit per política de l'editorialResults of studies of the static and dynamic dielectric properties in rod-like 4-n-octyloxy-40-cyanobiphenyl (8OCB) with isotropic (I)–nematic (N)–smectic A (SmA)–crystal (Cr) mesomorphism, combined with measurements of ...
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