Multiple ionic-plasmon resonances in naturally occurring multiwall nanotubes: infrared spectra of chrysotile asbestos.
Chrysotile asbestos is formed by densely packed bundles of multiwall hollow nanotubes. Each wall in the nanotubes is a cylindrically wrapped layer of Mg(3)Si(2)O(5)(OH)(4). We show by experiment and theory that the infrared spectra of chrysotile present multiple ionic-plasmon resonances in the Si-O stretching bands. These collective charge excitations are universal features of the nanotubes that are obtained by cylindrically wrapping an anisotropic material. The multiple plasmons can be observed if the width of the resonances is sufficiently small as in chrysotile.
Balan
Etienne
E
Laboratoire de Minéralogie Cristallographie, Case 115, 4 Place Jussieu, 75252 Paris Cedex 05, France.
Mauri
Francesco
F
Lemaire
Céline
C
Brouder
Christian
C
Guyot
François
F
Saitta
A Marco
AM
Devouard
Bertrand
B
D017632:Asbestos, Serpentine / Q000737:chemistry*; D008854:Microscopy, Electron; D008956:Models, Chemical; D036103:Nanotechnology; D010316:Particle Size; D013055:Spectrophotometry, Infrared; D020349:Surface Plasmon Resonance
D017632:Asbestos, Serpentine