B-Z Device
Chengde Mao
[-] NODE
RIGHT-HANDEDB-DNA
[-] NODES
[+] NODE
LEFT-HANDEDZ-DNA
[+] NODES
Right-Handed and Left-Handed DNA
B-ZZ-B
A Device Based on the B<-->Z Transition
Mao, C., Sun, W., Shen, Z. & Seeman,N.C. (1999), Nature 397, 144-146.
+ Co(NH 3)6+++- Co(NH 3)6
+++
A Sequence-Dependent Device
Hao Yan
Derivation of PX DNA
Seeman, N.C. (2001) NanoLetters 1, 22-26.
+
+
DS+DS
Resolve
Everywhere
Reciprocal
Exchange
Everywhere
Resolve
Everywhere
Reciprocal
Exchange
Everywhere
P X
Strand
Polarity
Ident ical
Strand
Polarity
Opposite
C D
P X
A B
J X 2
A B
D C
Yan, H., Zhang, X., Shen, Z. & Seeman, N.C. (2002), Nature 415, 62-65..
Switchable Versions of PX and JX2
J X 2
A B
D C
A B
C D
P X
Machine Cycle of the PX-JX2 Device
A B
C D
A B
C D
A B
D C
JX2
A B
D C
PX
I II
IV III
System to Test the PX-JX2 Device
JX2
JX2
JX2
PXPXPX
AFM Evidence for Operationof the PX-JX2 Device
Yan, H., Zhang, X., Shen, Z. & Seeman, N.C. (2002), Nature 415, 62-65.
Inserting a PX-JX2 Device into a 2D Array
Baoquan Ding
Cassette To Be Inserted
B. Ding & N.C. Seeman, Science 314, 1583-1585 (2006).
Array for Insertion
B. Ding & N.C. Seeman, Science 314, 1583-1585 (2006).
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