Study on the Morphology Properties of Carbon Nanotube/Polyaniline Composites Thin Film

Active layer’s morphologies properties are important for the optoelectronic devices. In this paper, the morphologies properties of the carbon nanotube/polyaniline composites thin film formed by spin coating were studied by the atomic force microscopy (AFM). The results showed that spin coating way greatly affects the thin film’s topographic image, carbon nanotubes’ concentration is the key that decide whether the interpenetrating network phase separation microstructure can be formed.

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The Attachment of Carbon Nanotube on a Blunt AFM Tip Using Electric Fields

Electronic and Photonic Packaging, Electrical Systems Design and Photonics, and Nanotechnology ◽

10.1115/imece2004-61549 ◽

2004 ◽

Author(s):

Hyung Woo Lee ◽

Soon Geun Kwon ◽

Soo Hyun Kim ◽

Yoon Keun Kwak ◽

Chang Soo Han

Keyword(s):

Carbon Nanotubes ◽

Atomic Force Microscopy ◽

Carbon Nanotube ◽

Electric Fields ◽

Low Cost ◽

Reliable Technique ◽

Force Microscopy ◽

Atomic Force

We report a simple, low cost, reliable technique of making carbon nanotube (CNT) modified atomic force microscopy (AFM) tip. We used the dielectrophoresis and the electrophoresis to align and deposit carbon nanotubes on the end of the AFM tip. From the simulation and the various experiments, we obtained the optimal electric condition, 0.32Vpp/μm. Also, we found that the blunt shape of the tip’s apex is more effective than sharpened one. Through the experiments, we verified that the blunt shape is more effective over 50% than the sharpened one in the attachment of CNTs. By comparing the scanning results between the CNT modified tip and a normal AFM tip, we obtained the improvement in efficiency of 23%.

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Dispersibility of Carbon Nanotubes

Materials Science Forum ◽

10.4028/www.scientific.net/msf.537-538.161 ◽

2007 ◽

Vol 537-538 ◽

pp. 161-168 ◽

Cited By ~ 8

Author(s):

T. Gábor ◽

D. Aranyi ◽

Katalin Papp ◽

F.H. Kármán ◽

Erika Kálmán

Keyword(s):

Carbon Nanotubes ◽

Atomic Force Microscopy ◽

Carbon Nanotube ◽

Polymer Composites ◽

Ionic Surfactant ◽

Geometrical Parameters ◽

Stable Carbon ◽

Force Microscopy ◽

Atomic Force ◽

Dispersion Agent

Availability of a stable carbon nanotube suspension is a prerequisite for production of polymer composites with carbon nanotube as additives. In this work nanotube suspensions, which have been prepared from various nanotubes in different dispersion agents, were compared. Dispersibility of the samples was investigated by scanning electon microscopy and atomic force microscopy. Solution of a non-ionic surfactant was also used successfully as a new dispersion agent. Geometrical parameters of the carbon nanotubes were determined by using atomic force microscopy. Correlation was found between the dispersibility and the parameters of the nanotubes and relative permittivity of the different solvents.

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Effect of TiO2 Nanofiller on Nanocomposited PMMA/TiO2 Thin Film

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.576.417 ◽

2012 ◽

Vol 576 ◽

pp. 417-420 ◽

Cited By ~ 1

Author(s):

N.N. Hafizah ◽

Ismail Lyly Nyl ◽

M.Z. Musa ◽

Mohamad Rusop Mahmood

Keyword(s):

Thin Film ◽

Electron Microscopy ◽

Thin Films ◽

Scanning Electron Microscopy ◽

Spin Coating ◽

Weight Percentage ◽

Force Microscopy ◽

Atomic Force ◽

Nanocomposite Thin Films ◽

Scanning Electron

In this study, PMMA/TiO2 nanocomposite thin films were prepared by using sonication spin coating technique. The PMMA and TiO2 solution were mixed together and sonicated for 1h to confirm the homogeneity of the sample. The thin films obtained were then measured using atomic force microscopy (AFM), field emission scanning electron microscopy (FESEM) and Fourier transform infrared (FTIR). FESEM micrograph reveals that the uniformity increases with the increase of TiO2 weight percentage.

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Atomic Force Microscopy of Single-Walled Carbon Nanotubes Using Carbon Nanotube Tip

Japanese Journal of Applied Physics ◽

10.1143/jjap.39.3707 ◽

2000 ◽

Vol 39 (Part 1, No. 6B) ◽

pp. 3707-3710 ◽

Cited By ~ 26

Author(s):

Nami Choi ◽

Takayuki Uchihashi ◽

Hidehiro Nishijima ◽

Takao Ishida ◽

Wataru Mizutani ◽

...

Keyword(s):

Carbon Nanotubes ◽

Atomic Force Microscopy ◽

Carbon Nanotube ◽

Single Walled Carbon Nanotubes ◽

Force Microscopy ◽

Single Walled Carbon ◽

Atomic Force ◽

Walled Carbon Nanotubes

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Covalent modification of single wall carbon nanotubes upon gamma irradiation in aqueous media

Hemijska industrija ◽

10.2298/hemind110531050j ◽

2011 ◽

Vol 65 (5) ◽

pp. 479-487 ◽

Cited By ~ 4

Author(s):

Svetlana Jovanovic ◽

Zoran Markovic ◽

Duska Kleut ◽

Dragana Tosic ◽

Dejan Kepic ◽

...

Keyword(s):

Carbon Nanotubes ◽

Carbon Nanotube ◽

Gamma Irradiation ◽

Structural Disorder ◽

Single Wall Carbon Nanotubes ◽

Aqueous Environment ◽

Force Microscopy ◽

Atomic Force ◽

Covalently Bonded ◽

Irradiation Treatment

Single wall carbon nanotubes (SWCNTs) were exposed to gamma radiation, absorbing the doses of 25, 50 and 100 kGy in aqueous environment. After the irradiation treatment, the changes in the structure were studied using Fourier Transform Infrared and Raman spectroscopy, thermogravimetric analysis and atomic force microscopy. Fourier Transform Infrared Spectroscopy has shown that the irradiation of SWCNTs in aqueous environment leads to covalent functionalization of SWCNTs. The irradiation of water leads to its radiolysis and the formation of free radical species of different types. These species react with nanotube sidewalls and in such way carboxylic and hydroxylic groups are covalently bonded to the sidewalls of SWCNTs. Thermogravimetric analysis was used to estimate the total amount of covalently bonded groups. The highest ratio of covalently bonded groups appears in nanotubes irradiated with the 100 kGy dose. Raman spectroscopy proves that the increase in irradiation doses leads to an increase of structural disorder of SWCNTs, presumably in the form of defects in carbon nanotube walls. Examination of ID to IG ratio shows a three times larger degree of structural disorder after the irradiation treatment with 100 kGy. The analysis of carbon nanotube Raman spectra RBM bands determined the presence of both semiconducting and metallic carbon nanotubes after gamma irradiation treatment. These measurements prove that gamma irradiation treatments have a nonselective effect regarding different chirality and therefore conductance of nanotubes. Atomic force microscopy shows a significant carbon nanotube shortening as the effect of gamma radiation treatment. Nanotubes with length between 500 nm and 1 ?m are predominant.

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Nanostructured TiO2 Thin Film by Sol-Gel Spin Coating with Different Concentration

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1109.529 ◽

2015 ◽

Vol 1109 ◽

pp. 529-533

Author(s):

Irma Hidayanti Halim Affendi ◽

Najwa Ezira Ahmed Azhar ◽

Puteri Sarah Mohamad Saad ◽

Mohamad Rusop

Keyword(s):

Thin Film ◽

Thin Films ◽

Electrical Properties ◽

Surface Morphology ◽

Spin Coating ◽

Sol Gel ◽

Force Microscopy ◽

Nanostructured Thin Film ◽

Atomic Force ◽

Current Voltage

The production of TiO2 nanostructured thin film was synthesized by sol-gel method using TiO2 nanopowder as precursor. The solution of TiO2 was then deposited as thin film onto glass substrate by spin-coating technique. The aim is to investigate the effect of concentrations on the surface morphology and electrical properties of the thin films. The effect on the surface morphology was observed by Field Emission Scanning Electron Microscopy (FESEM) and Atomic Force Microscopy (AFM). The electrical properties were then observed by two-point probe method. By measuring the current-voltage (IV) characteristic, resistivity and conductivity can be measured. The purpose of this paper is to investigate the surface morphology and the IV characteristic of the thin films.

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SWNT NETWORK for BIOMOLECULE DETECTION

MRS Proceedings ◽

10.1557/proc-858-hh14.8 ◽

2004 ◽

Vol 858 ◽

Author(s):

Massood Z. Atashbar ◽

Bruce Bejcek ◽

Srikanth Singamaneni

Keyword(s):

Carbon Nanotubes ◽

Atomic Force Microscopy ◽

Carbon Nanotube ◽

Quartz Crystal Microbalance ◽

Quartz Crystal ◽

Biomolecule Detection ◽

Force Microscopy ◽

Atomic Force ◽

Detection Of Biomolecules ◽

Swnt Network

ABSTRACTIn this paper we describe a single wall carbon nanotube (SWNT) based biological sensor for the detection of biomolecules using streptavidin and IgG. Two types of sensing mechanisms have been used to demonstrate the ability of carbon nanotubes to form nanoscale biosensors. The first sensing mechanism involves a CNT based conduction sensor in which the decrease in the current was observed when the specific biomolecule was bound. In the second mechanism Quartz Crystal Microbalance (QCM) was used to quantify the mass of the biomolecule bound on the sidewalls of the carbon nanotube. Both sensing mechanisms proved to be efficient and consistent. Immobilization of the biomolecules on the carbon nanotube surface was confirmed by Atomic Force Microscopy.

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