Formation of quantum dots in single stranded DNA-wrapped single-walled carbon nanotubes

被引：2

作者：

Li, Y. F. ^{[1
]}

Kaneko, T. ^{[1
]}

Hatakeyama, R. ^{[1
]}

机构：

[1] Tohoku Univ, Dept Elect Engn, Sendai, Miyagi 9808579, Japan

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 02期

关键词：

atomic force microscopy; carbon nanotubes; charge exchange; DNA; molecular biophysics; nanobiotechnology; quantum dots; tunnelling; ROOM-TEMPERATURE; ELECTRON TRANSISTOR; MICROSCOPY; WIRES;

D O I：

10.1063/1.3284511

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The transport properties of single-stranded DNA (ssDNA) wrapped single-walled carbon nanotubes (SWNTs) are studied from low to room temperature. Atomic force microscopy reveals a regularly patterned geometry of ssDNA molecules on the surface of SWNTs. Our measurements indicate that the semiconducting behavior of SWNTs is drastically changed after ssDNA modification, showing a clear charge-transfer process at room temperature. At low temperatures single-electron tunneling features are observed up to 80 K, demonstrating clearly that quantum dots in series are created in the SWNTs due to the ssDNA wrapping.

引用

页数：3

共 20 条

[1] BOCKRATH M, 1922, SCIENCE, V275, P1997
[2] Atomic force microscopy studies of DNA-wrapped carbon nanotube structure and binding to quantum dots
Campbell, Jennifer F.
Tessmer, Ingrid
Thorp, H. Holden
Erie, Dorothy A.
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (32) : 10648 - 10655
[3] Room temperature single electron transistor by local chemical modification of carbon nanotubes
Cui, JB
Burghard, M
Kern, K
[J]. NANO LETTERS, 2002, 2 (02) : 117 - 120
[4] Carbon nanotubes as molecular quantum wires
Dekker, C
[J]. PHYSICS TODAY, 1999, 52 (05) : 22 - 28
[5] Probing the structure of DNA-carbon nanotube hybrids with molecular dynamics
Johnson, Robert R.
Johnson, A. T. Charlie
Klein, Michael L.
[J]. NANO LETTERS, 2008, 8 (01) : 69 - 75
[6] Effects of ultra low energy nitrogen ion irradiation on carbon nanotube channel single-electron transistor
Kamimura, T
Yamamoto, K
Matsumoto, K
[J]. JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 2004, 43 (5A): : 2771 - 2773
[7] Alkaline metal-doped n-type semiconducting nanotubes as quantum dots
Kong, J
Zhou, CW
Yenilmez, E
Dai, HJ
[J]. APPLIED PHYSICS LETTERS, 2000, 77 (24) : 3977 - 3979
[8] Electrical properties of ferromagnetic semiconducting single-walled carbon nanotubes
Li, Y. F.
Hatakeyama, R.
Kaneko, T.
Izumida, T.
Okada, T.
Kato, T.
[J]. APPLIED PHYSICS LETTERS, 2006, 89 (08)
[9] Electronic transport properties of Cs-encapsulated double-walled carbon nanotubes
Li, Y. F.
Hatakeyama, R.
Kaneko, T.
Izumida, T.
Okada, T.
Kato, T.
[J]. APPLIED PHYSICS LETTERS, 2006, 89 (09)
[10] DNA functionalization of carbon nanotubes for ultrathin atomic layer deposition of high κ dielectrics for nanotube transistors with 60 mV/decade switching
Lu, YR
Bangsaruntip, S
Wang, XR
Zhang, L
Nishi, Y
Dai, HJ
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (11) : 3518 - 3519

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