Optical probing of sample heating in scanning near-field experiments with apertured probes (Articolo in rivista)

Type
Label
  • Optical probing of sample heating in scanning near-field experiments with apertured probes (Articolo in rivista) (literal)
Anno
  • 2004-01-01T00:00:00+01:00 (literal)
Alternative label
  • G. Latini; A. Downes; O. Fenwick; A. Ambrosio; M. Allegrini; C. Daniel; C. Silva; P. G. Gucciardi; S. Patane; R. Daik and W. J. Feast; F. Cacialli (2004)
    Optical probing of sample heating in scanning near-field experiments with apertured probes
    in Applied physics letters (Online)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • G. Latini; A. Downes; O. Fenwick; A. Ambrosio; M. Allegrini; C. Daniel; C. Silva; P. G. Gucciardi; S. Patane; R. Daik and W. J. Feast; F. Cacialli (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Department of Physics and Astronomy and London Centre for Nanotechnology, University College London; INFM and Dipartimento di Fisica, Università di Pisa; Cavendish Laboratory, University of Cambridge; CNR-Istituto per i Processi Chimico-Fisici, sez. Messina; IRC Polymer Science and and Technology, Durham University; Department of Physics and Astronomy and London Centre for Nanotechnology, University College London (literal)
Titolo
  • Optical probing of sample heating in scanning near-field experiments with apertured probes (literal)
Abstract
  • We have used the inherent thermochromism of conjugated polymers to investigate substrate heating effects in scanning near-field experiments with metal-coated \"apertured\" probes. Chemically etched and pulled fibers were used to provide near-field excitation of fully converted films of poly(p-phenylene vinylene), PPV, and of poly(4,4?-diphenylene diphenylvinylene). We detect no significant blueshift of the photoluminescence spectra generated with near-field excitation, in comparison to those collected with far-field excitation. We conclude that polymer heating in the region contributing to the luminescence is less than 40K. We also demonstrate that thermolithography of the PPV precursor is not significant by comparing UV ?325 nm? and red ?670 nm? illumination. (literal)
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