Self-aligned placement of biologically synthesized Coulomb islands within nanogap electrodes for single electron transistor

被引：22

作者：

Kumagai, Shinya ^{[1
,2
]}

Yoshii, Shigeo ^{[1
,2
]}

Matsukawa, Nozomu ^{[1
,2
]}

Nishio, Kazuaki ^{[1
,2
]}

Tsukamoto, Rikako ^{[1
,3
]}

Yamashita, Ichiro ^{[1
,2
,3
,4
]}

机构：

[1] Toyota Technol Inst, Dept Adv Sci & Technol, Tenpaku Ku, Nagoya, Aichi 4688511, Japan

[2] Panasonic Corp, ATRL, Kyoto 6190237, Japan

[3] Japan Sci & Technol, CREST, Kawaguchi, Saitama 3320012, Japan

[4] Nara Inst Adv Sci & Technol, Grad Sch Mat Sci, Nara 6300101, Japan

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 08期

关键词：

bioelectric phenomena; biomolecular electronics; cobalt compounds; electrodes; gold; molecular biophysics; proteins; single electron transistors; titanium; CAGE-SHAPED PROTEIN; QUANTUM DOTS; FABRICATION; APOFERRITIN; IMMOBILIZATION; SPECIFICITY; MECHANISM; SURFACE; ARRAYS;

D O I：

10.1063/1.3085767

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Biological synthesis and self-aligned placement of a Coulomb island was demonstrated for single electron transistor (SET) fabrication using a cage-shaped protein, apoferritin. Homogenous phi 7 nm Co3O4 and In oxide nanoparticles (NPs) were synthesized utilizing the apoferritin cavity as a spatially restricted chemical reaction chamber. Apoferritin accommodating a NP (Co3O4, In oxide) showed specific affinity to a Ti surface and self-aligned itself between a pair of Au/Ti nanogap electrodes. After the protein cage was eliminated, two tunnel junctions between the NP and each electrode had the same gap, thereby forming an ideal SET structure. The produced SET exhibited a Coulomb-staircase/oscillation at 4.2 K.

引用

页数：3

共 29 条

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