نتایج جستجو برای: carbon nanotube with initial curvature

تعداد نتایج: 9427268  

Baha Öndeş Mihrican Muti,

Disposable, selective and low-cost carbon nanotube modified electrodes were fabricated for the electrochemical detection of neonicotinoid insecticide, Clothianidin (CLT). Almost 2 folds’ increase at Clothianidin reduction signal was obtained by using single-walled carbon nanotube modified electrodes (SWCNT-PGE) compared to unmodified electrodes. These nanomaterials modified electrodes developed...

2011
Yongho Choi Seok-Mo Hong Byungjoo Park

Single walled carbon nanotube shows excellent chemical and physical properties and it has been extensively explored for novel applications. It has been shown that single walled carbon nanotube can be used to improve sensitivity of sensors such as bio sensors, gas sensors and mechanicals sensor by its unique properties. As a mechanical sensor, a mechanical force deforms the single walled carbon ...

2001
P. von Allmen

The purpose of this work is to present elements of a design tool for field emission displays using carbon nanotubes as emitters. We use a continuum model to describe the carbon nanotubes and we use a locally one-dimensional approximation to calculate the emission current. We investigate the emission current to voltage characteristic, screening effects and the lateral spread of the emission curr...

In this paper, finite element method is used to obtain thermal conductivity coefficients of single-walled carbon nanotube reinforced polypropylene. For this purpose, the two-dimensional representative volume elements are modeled. The effect of different parameters such as nanotube dispersion pattern, nanotube volume percentage in polymer matrix, interphase thickness between nanotube and surroun...

2017
Victor M. Nazarychev Sergey V. Larin Alexey V. Lyulin Theo Dingemans Jose M. Kenny Sergey V. Lyulin

Crystallization of all-aromatic heterocyclic polymers typically results in an improvement of their thermo-mechanical properties. Nucleation agents may be used to promote crystallization, and it is well known that the incorporation of nanoparticles, and in particular carbon-based nanofillers, may induce or accelerate crystallization through nucleation. The present study addresses the structural ...

2012
Je Hwang Ryu Jung Su Kang Kyu Chang Park

The carbon nanotube field emitter array was grown on silicon substrate through a resist-assisted patterning (RAP) process. The shape of the carbon nanotube array is elliptical with 2.0 × 0.5 mm for an isotropic focal spot size at anode target. The field emission properties with triode electrodes show a gate turn-on field of 3 V/μm at an anode emission current of 0.1 mA. The author demonstrated ...

2013
Sameer Prabhu Nisha Sarwade

Carbon Nanotube Field Effect Transistors (CNTFET) are promising nanoscaled devices for implementing high performance, very dense and low power circuits. Most carbon nanotube field-effect transistors (CNTFETs) directly attach metal source/drain contacts to an intrinsic nanotube channel known as SBCNFET. When the gate oxide thickness is reduced, such transistors display strong ambipolar conductio...

2016
Tom Grace LePing Yu Christopher Gibson Daniel Tune Huda Alturaif Zeid Al Othman Joseph Shapter

Suspensions of single-walled, double-walled and multi-walled carbon nanotubes (CNTs) were generated in the same solvent at similar concentrations. Films were fabricated from these suspensions and used in carbon nanotube/silicon heterojunction solar cells and their properties were compared with reference to the number of walls in the nanotube samples. It was found that single-walled nanotubes ge...

2007
Hyoung Joon Choi

We solve the Green's equation exactly for the armchair-type carbon nanotubes with the one-electron tight-binding Hamiltonian and obtain analytic expressions for the conductance of the nanotube with local perturbations. Our results explicitly show the dependence of the conductance on the Fermi level, the tubular radius, and the strength of the perturbation. A carbon nanotube is a new form of gra...

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