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422 publications, page 1 of 43
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  • Article English OPEN
    Alvaro Mariño Camargo;
    (2016)
    As a tribute to the winners of the Nobel Prize in Physics 2016, the editorial board of Momento Revista de Física decided to reproduce a small part of their work for which they were deserving of this recognition. Our readers interested in the subject can see the...
  • Article English OPEN
    J. A. Olarte; A. Mariño;
    (2008)
    Electron paramagnetic resonance (EPR) and AC Susceptibility measurements were carried out as a function of temperature on La0,7Ca0,3MnO3 polycrystalline samples. The samples displayed a transition from paramagnetic-insulator to ferromagnetic-metal at Tc around 261K. Tc ...
  • Article English OPEN
    Karen M. Fonseca; Rafael R. Rey-González;
    (2013)
    We consider the dissipative dynamics of an exciton in a Lorentzian reservoir, relevant in the description of some photosynthetic complexes. Although this dynamics have been frequently described as non-Markovian, we show that this characterization may be misleading. We d...
  • Article English OPEN
    José D. Támara; Julio E. Rodríguez;
    (2015)
    By using the solid state reaction method composites of Ca2:94Y0:06Co4O9+d/Ag were growth, the silver weight ratios take values between 0% and 10 %. Their transport properties were studied from electrical resistivity r(T) and Seebeck coefficient S(T) measurements as func...
  • Article English OPEN
    Mauricio García C.; Jairo Caro G.;
    (1991)
    Una circunstancia desafortunada en la práctica docente en disciplinas de carácter experimental es la falta de renovación de los ejercicios que se pueden llevar a cabo en los laboratorios, y en el caso de la Física, sobre todo a nivel secundario, la casi imposibilidad de...
  • Article English OPEN
    Allan V. Ribeiro; Moacir P. de Souza Filho; Alexys Bruno Alfonso;
    (2016)
    Among the challenges and initiatives aiming the improvement of teaching in several areas of knowledge in basic education, the enhancement of the formation of teachers plays a key role. Both the Brazilian government and the academic community have debated about this. Inn...
  • Article English OPEN
    Guillermo A. Guirales; Herbert Vinck-Posada; Boris A. Rodríguez;
    (2013)
    En este trabajo estudiamos un sistema de polaritones excitónicos con_nado en punto cuántico embebido en una nanocavidad de cristal fotónico. Usando un estado separable del tipo BCS, para el subsistema excitónico confinado en el punto cuántico, y un estado coherente, par...
  • Article English OPEN
    Angela S. Camacho;
    (2014)
    La Nano-plasmónica es una herramienta fundamental de la nano-tecnología. Por esta razón, el enfoque principal de este artículo es enfatizar los conceptos físicos subyacentes a la aplicación particular en las pinzas ópticas. Comenzando con una breve historia de cómo naci...
  • Article English OPEN
    Paulo N. Lisboa-Filho; Maria A. Monteiro;
    (2013)
    In this contribution, we discuss and analyze some aspects of nanoscience and nanotechnology, based on the approach kwon as Science, Technology and Society (STS), as well as the prospects of Philosophy of Technology. In this context, we specify the constitute the nanosci...
  • Article English OPEN
    Angela S. Camacho;
    (2013)
    A graduate module on research projects offered by the ACAC entitled Basic Sciences aims to locate and emphasize the importance of these sciences in any research project. The module aims to raise awareness of the role played by basic science in daily life and its expecte...
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