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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
chemical engineering
Phonons in slow motion: Dispersion relations in ultrathin Si membranes
Nano Letters, Volume 12, No. 7, Year 2012
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Description
We report the changes in dispersion relations of hypersonic acoustic phonons in free-standing silicon membranes as thin as ∼8 nm. We observe a reduction of the phase and group velocities of the fundamental flexural mode by more than 1 order of magnitude compared to bulk values. The modification of the dispersion relation in nanostructures has important consequences for noise control in nano- and microelectromechanical systems (MEMS/NEMS) as well as opto-mechanical devices. © 2012 American Chemical Society.
Authors & Co-Authors
Cuffe, John
Spain, Barcelona
Institut Català de Nanociència I Nanotecnologia
Ireland, Cork
University College Cork
Chavez-Angel, E.
Spain, Barcelona
Institut Català de Nanociència I Nanotecnologia
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Shchepetov, Andrey
Finland, Espoo
Teknologian Tutkimuskeskus Vtt
Chapuis, Pierre Olivier
Spain, Barcelona
Institut Català de Nanociència I Nanotecnologia
France, Paris
Cnrs Centre National de la Recherche Scientifique
El Boudouti, El Houssaine
France, Villeneuve-d'ascq
Institut D'electronique de Microélectronique et de Nanotechnologie Iemn
Morocco, Oujda
Université Mohammed Premier Oujda
Alzina, Francesc
Spain, Barcelona
Institut Català de Nanociència I Nanotecnologia
Kehoe, Timothy
Spain, Barcelona
Institut Català de Nanociència I Nanotecnologia
Gomis-Bresco, Jordi
Spain, Barcelona
Institut Català de Nanociència I Nanotecnologia
Dudek, Damian
Spain, Barcelona
Institut Català de Nanociència I Nanotecnologia
Germany, Bonn
Deutsche Forschungsgemeinschaft
Pennec, Yan
France, Villeneuve-d'ascq
Institut D'electronique de Microélectronique et de Nanotechnologie Iemn
Djafari-Rouhani, Bahram
France, Villeneuve-d'ascq
Institut D'electronique de Microélectronique et de Nanotechnologie Iemn
Prunnila, Mika
Finland, Espoo
Teknologian Tutkimuskeskus Vtt
Ahopelto, Jouni
Finland, Espoo
Teknologian Tutkimuskeskus Vtt
Sotomayor Torres, Clivia M.
Spain, Barcelona
Institut Català de Nanociència I Nanotecnologia
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Spain, Barcelona
Institució Catalana de Recerca I Estudis Avançats
Statistics
Citations: 89
Authors: 14
Affiliations: 9
Identifiers
Doi:
10.1021/nl301204u
ISSN:
15306984
e-ISSN:
15306992