Direct Observation of Au/Ga2O3 Peapodded Nanowires and Their Plasmonic Behaviors

被引：34

作者：

Chen, Po-Han ^{[1
]}

Hsieh, Chin-Hua ^{[1
]}

Chen, Sheng-Yu ^{[1
]}

Wu, Chen-Hwa ^{[1
]}

Wu, Yi-Jen ^{[1
]}

Chou, Li-Jen ^{[1
]}

Chen, Lih-Juann ^{[1
]}

机构：

[1] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 300, Taiwan

来源：

NANO LETTERS | 2010年 / 10卷 / 09期

关键词：

Rayleigh instability; plasmonic behaviors; optoelectronics and biosensing devices; core-shell; gold-peapodded Ga2O3 nanowires; NANOPARTICLES; CHAINS; DEPENDENCE; SILICA; FILMS; SIZE;

D O I：

10.1021/nl1005977

中图分类号：

O6 [化学];

学科分类号：

070301 [无机化学];

摘要：

Gold-peapodded Ga2O3 nanowires were fabricated successfully in a well-controlled manner by thermal annealing of core shell gold Ga2O3 nanowires. During the heating process, the core gold nanowires were broken up into chains of nanoparticles at sufficiently high temperature by the mechanism of Rayleigh instability. In addition, the size, shape, and interspacing between the particles can be manipulated by varying the annealing time and/or the forming gas. The plasmonic behaviors of these nanostructures are investigated by optical spectroscopy. A single nanowire optical device was designed, and its photonic characteristics were investigated. A remarkably high on/off photocurrent ratio in response to a 532 nm Nd:YAG laser light was found. As the size of the particle (pea) increases, the corresponding spectra are red-shifted. In addition, morphological changes of the peas lead to a distinct spectral response. The results may usher in the diverse applications in optoelectronics and biosensing devices with peapod nanostructures.

引用

页码：3267 / 3271

页数：5

共 23 条

[1]

Electromagnetic energy transfer and switching in nanoparticle chain arrays below the diffraction limit [J].

Brongersma, ML ;

Hartman, JW ;

Atwater, HA .

PHYSICAL REVIEW B, 2000, 62 (24) :16356-16359

[2]

Au(Si)-filled β-Ga2O3 nanotubes as wide range high temperature nanothermometers [J].

Gong, N. W. ;

Lu, M. Y. ;

Wang, C. Y. ;

Chen, Y. ;

Chen, L. J. .

APPLIED PHYSICS LETTERS, 2008, 92 (07)

[3]

Incorporation of highly dispersed gold nanoparticles into the pore channels of mesoporous silica thin films and their ultrafast nonlinear optical response [J].

Gu, JL ;

Shi, JL ;

You, GJ ;

Xiong, LM ;

Qian, SX ;

Hua, ZL ;

Chen, HR .

ADVANCED MATERIALS, 2005, 17 (05) :557-+

[4]

Halté V, 1999, APPL PHYS LETT, V75, P3799, DOI 10.1063/1.125460

[5]

Coaxial Metal-Oxide-Semiconductor (MOS) Au/Ga2O3/GaN Nanowires [J].

Hsieh, Chin-Hua ;

Chang, Mu-Tung ;

Chien, Yu-Jen ;

Chou, Li-Jen ;

Chen, Lih-Juann ;

Chen, Chii-Dong .

NANO LETTERS, 2008, 8 (10) :3288-3292

[6]

Nanophotonic Switch: Gold-in-Ga2O3 Peapod Nanowires [J].

Hsieh, Chin-Hua ;

Chou, Li-Jen ;

Lin, Gong-Ru ;

Bando, Yoshio ;

Golberg, Dimitri .

NANO LETTERS, 2008, 8 (10) :3081-3085

[7]

Photosensitive gold-nanoparticle-embedded dielectric nanowires [J].

Hu, MS ;

Chen, HL ;

Shen, CH ;

Hong, LS ;

Huang, BR ;

Chen, KH ;

Chen, LC .

NATURE MATERIALS, 2006, 5 (02) :102-106

[8]

Morphological evolution of Au nanowires controlled by Rayleigh instability [J].

Karim, S. ;

Toimil-Molares, M. E. ;

Balogh, A. G. ;

Ensinger, W. ;

Cornelius, T. W. ;

Khan, E. U. ;

Neumann, R. .

NANOTECHNOLOGY, 2006, 17 (24) :5954-5959

[9]

Periodic chains of gold nanoparticles and the role of oxygen during the growth of silicon nanowires [J].

Kolb, Florian M. ;

Berger, Andreas ;

Hofmeister, Herbert ;

Pippel, Eckhard ;

Goesele, Ulrich ;

Zacharias, Margit .

APPLIED PHYSICS LETTERS, 2006, 89 (17)

[10]

Ordering of quantum dots using genetically engineered viruses [J].

Lee, SW ;

Mao, CB ;

Flynn, CE ;

Belcher, AM .

SCIENCE, 2002, 296 (5569) :892-895

← 1 2 3 →