Biomedical Engineering Reference
In-Depth Information
A
B
+5V
C
-5V
2
1
0
-1
-2
2
1
0
-1
-2
9
6
3
79 nm
79 nm
79 nm
50
150 250
X(nm)
0
100 200
0
100 200
X(nm)
X(nm)
COLOR FIGURE 1.8
(A). Topographic. AFM. image. of. 6His-SP1-GNP. chain. formation. on. mica. (insets. shows. a. cross-section. on. the.
chain).. (B. and. C). EFM. at. positive. and. negative. bias. voltage. of. 6His-SP1-GNP. chain. on. mica,. showing. clear.
polarization.of.the.embedded.GNPs.(no.signal.is.observed.at.0.V)..The.insets.show.the.signal.strength..(From.
Medalsy.et.al..2008)
A
B
C
8
6
4
2
8
6
4
2
0 0.5
1
X(nm)
1.5 2
0 100
200
X(nm)
300 400
80 nm
80 nm
400 nm
COLOR FIGURE 1.9
6His-SP1-GNP. tube. structures. on. HOPG.. (A). Large-area. topographic. imaging. shows. multiple. tubes.. (B). A.
single.tube.with.a.height.of.~9.nm.(dashed.line)..(C).With.contact.mode.AFM,.a.single.line.was.scratched,.thus.
applying.lateral.sheer.force.on.the.tube.(the.arrow.in.B)..The.tube.was.moved.and.bent.but.not.torn,.indicating.
the.physical.strength.of.the.structure.
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