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
  • 2005-01-01T00:00:00+01:00 (literal)
Alternative label
  • Latini, G; Downes, A; Fenwick, O; Ambrosio, A; Allegrini, M; Daniel, C; Silva, C; Gucciardi, PG; Patane, S; Daik, R; Feast, WJ; Cacialli, F (2005)
    Optical probing of sample heating in scanning near-field experiments with apertured probes
    in Applied physics letters
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Latini, G; Downes, A; Fenwick, O; Ambrosio, A; Allegrini, M; Daniel, C; Silva, C; Gucciardi, PG; Patane, S; Daik, R; Feast, WJ; Cacialli, F (literal)
Pagina inizio
  • 011102 (literal)
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  • 86 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
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  • Univ Coll London, Dept Phys & Astron, London WC1E 6BT, England Univ Coll London, London Ctr Nanotechnol, London WC1E 6BT, England Univ Pisa, INFM, I-5612 Pisa, Italy Univ Pisa, Dipartimento Fis, I-5612 Pisa, Italy Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England CNR, Ist Proc Chimicofis, Sez Messina, I-98123 Messina, Italy Univ Messina, INFM, I-98166 Messina, Italy Univ Messina, Dipartimento Fis MTFA, I-98166 Messina, Italy Univ Durham, IRC Polymer Sci & Technol, Durham DH1 3LE, England (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 40 K. 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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