PN Vishwakarma

Publication List Details

Period

2005 - 2008

Number

14

Co-Authors

Synthesis of multi-wall carbon nanotubes by simple pyrolysis (2008)

Mahanandia, P, Vishwakarma, PN, Nanda, KK, Prasad, V, Barai, K, Mondal, AK, ...

A new pyrolysis technique has been developed for the synthesis of multi-walled carbon nanotubes (MWCNTs). In this simple method diethyl ether and nickelocene is pyrolysized in a reaction quartz tube...

Synthesis of multi-wall carbon nanotubes by simple pyrolysis (2008)

Mahanandia, P, Vishwakarma, PN, Nanda, KK, Prasad, V, Barai, K, Mondal, AK, ...

A new pyrolysis technique has been developed for the synthesis of multi-walled carbon nanotubes (MWCNTs). In this simple method diethyl ether and nickelocene is pyrolysized in a reaction quartz tube...

Metal–insulator transition in boron-doped amorphous carbon films (2007)

Vishwakarma, PN, Subramanyam, SV

Boron-doped amorphous graphite-like carbon (GLC) films have been prepared with different boron concentrations. Electrical transport measurements in the temperature range 1.3–300 K on the films...

Metal–insulator transition in boron-doped amorphous carbon films (2007)

Vishwakarma, PN, Subramanyam, SV

Boron-doped amorphous graphite-like carbon (GLC) films have been prepared with different boron concentrations. Electrical transport measurements in the temperature range 1.3–300 K on the films...

Hopping conduction in boron doped amorphous carbon films (2006)

Vishwakarma, PN, Subramanyam, SV

The electrical transport properties of boron doped graphitelike amorphous carbon films have been studied. Variable range hopping (VRH) conduction is found to be the conduction mechanism in these...

Multiwall carbon nanotubes from pyrolysis of tetrahydrofuran (2006)

Mahanandia, P, Vishwakarma, PN, Nanda, KK, Prasad, V, Subramanyam, SV, Dev, SK, ...

Multiwalled carbon nanotubes have been prepared by pyrolysing tetrahydrofuran (THF) in the presence of nickelocene. Pyrolysis of the precursor mixture has been achieved at temperature as low as...

Hopping conduction in boron doped amorphous carbon films (2006)

Vishwakarma, PN, Subramanyam, SV

The electrical transport properties of boron doped graphitelike amorphous carbon films have been studied. Variable range hopping (VRH) conduction is found to be the conduction mechanism in these...

Multiwall carbon nanotubes from pyrolysis of tetrahydrofuran (2006)

Mahanandia, P, Vishwakarma, PN, Nanda, KK, Prasad, V, Subramanyam, SV, Dev, SK, ...

Multiwalled carbon nanotubes have been prepared by pyrolysing tetrahydrofuran (THF) in the presence of nickelocene. Pyrolysis of the precursor mixture has been achieved at temperature as low as...

Structural morphology of amorphous conducting carbon film (2005)

Vishwakarma, PN, Prasad, V, Subramanyam, SV, Ganesan, V

Amorphous conducting carbon films deposited over quartz substrates were analysed using X-ray diffraction and AFM technique. X-ray diffraction data reveal disorder and roughness in the plane of...

Structural morphology of amorphous conducting carbon film (2005)

Vishwakarma, PN, Prasad, V, Subramanyam, SV, Ganesan, V

Amorphous conducting carbon films deposited over quartz substrates were analysed using X-ray diffraction and AFM technique. X-ray diffraction data reveal disorder and roughness in the plane of...

AC Conductivity in Boron Doped Amorphous Conducting Carbon Films on the Insulating Side of MI Transition (2005)

Vishwakarma, PN

Boron doped amorphous conducting carbon films show MI transition induced by doping. In this paper we discuss the ac conductivity of the films, which lie on the insulating side of MI transition. The...

M-I Transition in a-Conducting Carbon Films Induced by Boron Doping (2005)

Vishwakarma, PN, Subramanyam, SV

The amorphous conducting carbon films have been prepared at three different preparation temperatures with different boron-doping levels. The structural and transport properties of the same have been...

AC Conductivity in Boron Doped Amorphous Conducting Carbon Films on the Insulating Side of MI Transition (2005)

Vishwakarma, PN

Boron doped amorphous conducting carbon films show MI transition induced by doping. In this paper we discuss the ac conductivity of the films, which lie on the insulating side of MI transition. The...

M-I Transition in a-Conducting Carbon Films Induced by Boron Doping (2005)

Vishwakarma, PN, Subramanyam, SV

The amorphous conducting carbon films have been prepared at three different preparation temperatures with different boron-doping levels. The structural and transport properties of the same have been...