Electrical characterization of individual carbon nanotubes grown in nanoporous anodic alumina templates

2004 ◽  
Vol 84 (7) ◽  
pp. 1177-1179 ◽  
Author(s):  
Wan Young Jang ◽  
N. N. Kulkarni ◽  
C. K. Shih ◽  
Zhen Yao
Nano Letters ◽  
2007 ◽  
Vol 7 (4) ◽  
pp. 1086-1090 ◽  
Author(s):  
Paul Rice ◽  
T. Mitch Wallis ◽  
Stephen E. Russek ◽  
Pavel Kabos

2013 ◽  
Vol 8 (1) ◽  
Author(s):  
Victor M Prida ◽  
Javier García ◽  
Lucia Iglesias ◽  
Victor Vega ◽  
Detlef Görlitz ◽  
...  

2008 ◽  
Vol 8 (12) ◽  
pp. 6523-6527
Author(s):  
D. Mendoza ◽  
P. Santiago

In this work we present the electrical characterization of carbon nanotubes synthesized by a thermal chemical deposition method, using carbon disulfide as the precursor of carbon and iron as the catalyst. We found a broad maximum in the electrical resistance as a function of temperature between 275–300 K and a hysteretic behavior when the measurements were made in a humid environment. We propose that the water molecules act as traps for charge carriers, and the overall behavior of the observed phenomenon is discussed in terms of the confinement of water inside the carbon nanotubes.


2011 ◽  
Vol 3 (6) ◽  
pp. 826-834 ◽  
Author(s):  
S. Bellucci ◽  
L. Coderoni ◽  
F. Micciulla ◽  
G. Rinaldi ◽  
I. Sacco

2007 ◽  
Vol 1057 ◽  
Author(s):  
Libao An ◽  
Craig Friedrich

ABSTRACTThis paper reports on a real-time monitoring method for the assembly of a small number of metallic carbon nanotubes (CNTs) by dielectrophoresis (DEP). A time-varying impedance model of the electrode gap was developed to evaluate the number of CNTs which span the gap by measuring the simultaneous variation of gap impedance during the DEP process. Sudden decreases of gap impedance signals were detected during the DEP assembly of multi-walled carbon nanotubes (MWNTs) corresponding to assembly of single or multiple tubes across the gap. The method reduces the requirement of scanning electron microscopy (SEM) inspection and could help automate DEP assembly of CNTs.


Coatings ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 403 ◽  
Author(s):  
Luis Fernández-Menéndez ◽  
Ana González ◽  
Víctor Vega ◽  
Víctor de la Prida

In this work, the entire manufacturing process of electrostatic supercapacitors using the atomic layer deposition (ALD) technique combined with the employment of nanoporous anodic alumina templates as starting substrates is reported. The structure of a usual electrostatic capacitor, which comprises a top conductor electrode/the insulating dielectric layer/and bottom conductor electrode (C/D/C), has been reduced to nanoscale size by depositing layer by layer the required materials over patterned nanoporous anodic alumina membranes (NAAMs) by employing the ALD technique. A thin layer of aluminum-doped zinc oxide, with 3 nm in thickness, is used as both the top and bottom electrodes’ material. Two dielectric materials were tested; on the one hand, a triple-layer made by a successive combination of 3 nm each layers of silicon dioxide/titanium dioxide/silicon dioxide and on the other hand, a simple layer of alumina, both with 9 nm in total thickness. The electrical properties of these capacitors are studied, such as the impedance and capacitance dependences on the AC frequency regime (up to 10 MHz) or capacitance (180 nF/cm2) on the DC regime. High breakdown voltage values of 60 V along with low leakage currents (0.4 μA/cm2) are also measured from DC charge/discharge RC circuits to determine the main features of the capacitors behavior integrated in a real circuit.


2006 ◽  
Vol 17 (15) ◽  
pp. 3925-3929 ◽  
Author(s):  
Matthew R Maschmann ◽  
Aaron D Franklin ◽  
Placidus B Amama ◽  
Dmitri N Zakharov ◽  
Eric A Stach ◽  
...  

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