Long-wavelength, confined optical phonons in InAs nanowires probed by Raman spectroscopy M. Cantoro, A. V. Klekachev, A. Nourbakhsh, B. Sorée, M. M. Heyns and S. De Gendt Eur. Phys. J. B, 79 4 (2011) 423-428 Published online: 01 February 2011 DOI: 10.1140/epjb/e2011-10705-2