Skpm Tab - JEOL JSPM-5200 Instructions Manual

• Oscillation level (OSC Level/V)
When you use hard cantilevers such as an Si cantilever, it is recommended that you
use a low oscillation level to observe the image. If the oscillation level is too high,
the cantilever may be broken. When you use soft cantilevers, however, increase the
oscillation level accordingly. Generally, the harder the cantilever, the better the
results for viscoelasticity image observation.
5.4.4

SKPM Tab

SKPM (Scanning Kelvin probe Microscopy) is an optional function that requires a
lock-in amplifier supplied to order. Connect the lock-in amplifier to the SPM controller
and set the software in accordance with the procedure in Section 5.2.5, "Lock-in
amplifier."
■ Preparation fo
A conductive cantilever is used for SKPM image observation
amplifier (operational amplifier) is incorporated in the SPM head. The cantilever is
groun ded via thi
■ Selecting a
cantilev
If a cantilever has a long and short cantilever tips, as shown in the figure below, and you
want to use the short cantilever for im
long one using a pair of tweezers. For this, use a condu
frequency is 100 to 300 kHz.
—— CAUTION ———————
When you use a short cantilever, be sure to remove the long one with a
pair of tweezers. Otherwise, the top of the long cantilever touches the
specimen before the short one does.
TMPM5200-2
r SKPM image observation
s amplifier.
er
Long
cantilever
Tweezers
The top of the long
cantilever touches
the specimen before
the short one.
５ MEASUREMENT OPERATION
age observation, be sure to break and remove the
ctive cantilever whose resonance
Laser
Cantilever
. A current-detection
5-45