Artículos de revistas
Imaging of a patterned and buried molecular layer by coherent acoustic phonon spectroscopy
Fecha
2012-11Registro en:
Hettich, Mike ; Jacob, Karl ; Ristow, Oliver ; He, Chuan ; Mayer, Jan ; et al.; Imaging of a patterned and buried molecular layer by coherent acoustic phonon spectroscopy; American Institute Of Physics; Applied Physics Letters; 101; 19; 11-2012; 191606-191606
0003-6951
Autor
Hettich, Mike
Jacob, Karl
Ristow, Oliver
He, Chuan
Mayer, Jan
Schubert, Martin
Gusev, Vitalyi
Bruchhausen, Axel Emerico
Dekorsy, Thomas
Resumen
A molecular layer of aminopropyltriethoxysilane is patterned with a focused ion beam and subsequently covered by a gold film. The gold-polymer-substrate structures are afterwards imaged by ultrafast coherent acoustic phonon spectroscopy in reflection geometry. We demonstrate that the lateral structure of the covered polymer layer can be detected via the damping time of the vibrational mode of the gold film. Furthermore, we utilize Brillouin oscillations originating from the silicon substrate to map the structures and to estimate the molecular layer thickness.