Li Song et al 2006 Nanotechnology 17 2355 doi:10.1088/0957-4484/17/9/046
Efficiently producing single-walled carbon nanotube rings and investigation of their field emission properties
Li Song1,5, Lijie Ci2, Chuanhong Jin1, Pingheng Tan3, Lianfeng Sun4, Wenjun Ma1, Lifeng Liu1, Dongfang Liu1, Zengxing Zhang1, Yanjuan Xiang1, Shudong Luo1, Xiaowei Zhao1, Jun Shen1, Jianjun Zhou1, Weiya Zhou1 and Sishen Xie1,6
Show affiliationsSingle-walled carbon nanotube (SWNT) rings with a diameter of about 100 nm have been prepared by thermally decomposing hydrocarbon in a floating catalyst system. These rings appeared to consist mostly of SWNT toroids. High resolution transmission electron microscopy showed that these rings were composed of tens of SWNTs with a tightly packed arrangement. The production of SWNT rings was improved through optimizing various growth parameters, such as growth temperature, sublimation temperature of the catalyst, different gas flows and different catalyst components. The growth mechanism of the SWNT rings is discussed. In the field emission measurements we found that field emission from a halved ring is better than that from a whole SWNT ring, which contributed to the better emission from two opened ends of the nanotubes of the halved SWNT ring.
- PACS
-
79.70.+q Field emission, ionization, evaporation, and desorption
65.80.+n Thermal properties of small particles, nanocrystals, nanotubes
- Subjects
- Dates
-
Issue 9 (14 May 2006)
Received 17 December 2005
Published 11 April 2006
-
Efficiently producing single-walled carbon nanotube rings and investigation of their field emission properties
Li Song et al 2006 Nanotechnology 17 2355
-
The future of tilted Bianchi universes
John D Barrow and Sigbjørn Hervik 2003 Class. Quantum Grav. 20 2841
-
On the static solutions in gravity with massive scalar field in three dimensions
G de Berredo-Peixoto 2003 Class. Quantum Grav. 20 4305
-
Assigning quantum-mechanical initial conditions to cosmological perturbations
Massimo Giovannini 2003 Class. Quantum Grav. 20 5455
-
Hilbert–Schmidt volume of the set of mixed quantum states
Karol Zyczkowski and Hans-Jürgen Sommers 2003 J. Phys. A: Math. Gen. 36 10115
-
Effect of acetylene in buffer gas on the microstructures of carbon nanotubes in arc discharge
D S Tang et al 2002 Nanotechnology 13 L1
-
The effect of applied sensor contact force on pulse transit time
X F Teng and Y T Zhang 2006 Physiol. Meas. 27 675
-
Sensitivity study and optimization of a 3D electric impedance tomography prostate probe
A Borsic et al 2009 Physiol. Meas. 30 S1
-
Critical features of colossal magnetoresistive manganites
Y Tokura 2006 Rep. Prog. Phys. 69 797
-
On the scattering method for the
-equation and reconstruction of convection coefficients
Alexandru Tamasan 2004 Inverse Problems 20 1807
Related review articles
What's this?- Recent developments in dimensional nanometrology using AFMs
- Cobalt-based magnetic nanocomposites: fabrication, fundamentals and applications
- Kinetic methods for measuring the temperature of clusters and nanoparticles in molecular beams