ISSN:
1432-0630
Schlagwort(e):
61.16.Ch
;
62.20.-x
;
68.35.Bs
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Maschinenbau
,
Physik
Notizen:
Abstract The frictional properties of freshly cleaved (010) surfaces of the ferroelectric TriGlycine Sulfate (TGS) were investigated by combined scanning and friction force microscopy under ambient conditions. A frictional contrast could be observed between domains with different electrical polarity, as well as between terraces inside individual domains which are separated by steps of half of the unit-cell height or an odd multiple of this value. The latter contrast mechanism originates from the arrangement of the molecules at the surface which is chemically homogeneous, but structurally rotated by 180° between different terraces. The resulting asymmetric surface potential gives rise to a frictional anisotropy in different directions that can be detected by the force microscope, as well as to a change of the frictional force between forward and backward scan direction.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF01540254
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