Dell 3100 Spezifikationen PDF herunterladen (Seite 273)

100

101

Interleave Scanning

Use of LiftMode with TappingMode

Rev. D Dimension 3100 Manual 253/(246 Blank)

14.5.4 Amplitude Data Interpretation

When monitoring amplitude data in LiftMode, brighter regions correspond to smaller amplitude,

and darker regions to larger amplitude.

14.5.5 Cantilever Oscillation Amplitude

The selection of the oscillation amplitude in LiftMode depends on the quantity to be measured. For

force gradients which are small in magnitude but occur over relatively large distances (sometimes

hundreds of nm, as with magnetic or electric forces), the oscillation amplitude can be large, which

for some applications may be beneﬁcial. The Lift scan height must be correspondingly large so

that the tip does not strike the surface. However, the lateral resolution of far ﬁeld (MFM or EFM)

measurements decreases with distance from the surface. Typically, the resolution is limited to a

value (in nm) roughly equal to the Lift scan height; see Chapter 15.

Small amplitudes must be used to sense force gradients, such as Van der Waals forces, which occur

over short distances (typically a few nm). As much of the cantilever travel as possible should be

within the range of the force gradient.

1 2 ... 268 269 270 271 272 273 274 275 276 277 278 ... 375 376

Kommentare zu diesen Handbüchern

Keine Kommentare

Dell 3100 Spezifikationen Seite 273

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Drucken & Scannen Dell 3100