All Outputs (79)

Electrical Behavior of Langmuir–Blodgett Networks of Sorted Metallic and Semiconducting Single-Walled Carbon Nanotubes (2012)
Journal Article

Langmuir–Blodgett deposition has been used to form thin film networks of both metallic and semiconducting single-walled carbon nanotubes. These have been investigated to understand their physical, optical, and morphological properties. The electrical... Read More about Electrical Behavior of Langmuir–Blodgett Networks of Sorted Metallic and Semiconducting Single-Walled Carbon Nanotubes.

Direct nanoscale imaging of ballistic and diffusive thermal transport in graphene nanostructures (2012)
Journal Article

We report direct imaging of nanoscale thermal transport in single and few-layer graphene with approximately 50 nm lateral resolution using high vacuum scanning thermal microscopy. We observed increased heat transport in suspended graphene where heat... Read More about Direct nanoscale imaging of ballistic and diffusive thermal transport in graphene nanostructures.

Nanoscale spatial resolution probes for scanning thermal microscopy of solid state materials (2012)
Journal Article

Scanning thermal microscopy (SThM) uses micromachined thermal sensors integrated in a force sensing cantilever with a nanoscale tip that can be highly useful for exploration of thermal management of nanoscale semiconductor devices as well as mapping... Read More about Nanoscale spatial resolution probes for scanning thermal microscopy of solid state materials.

Thermal characterisation of µL volumes using a thin film thermocouple based sensor (2011)
Journal Article

The electrical and optical properties of oriented Langmuir-Blodgett films of carbon nanotubes (2011)
Journal Article

A versatile nanopatterning technique based on controlled undercutting and liftoff (2011)
Journal Article

Micro-machined fluidic devices for terahertz time-domain spectroscopy (2011)
Journal Article

Here we present a silicon based, micro-machined fluidic device for terahertz frequencies, fabricated using standard lithographic and micro-machining processes in a cleanroom environment. Designed for use in a conventional transmission terahertz time-... Read More about Micro-machined fluidic devices for terahertz time-domain spectroscopy.

Self-catalyzed, pure zincblende GaAs nanowires grown on Si(111) by molecular beam epitaxy. (2010)
Journal Article

The morphology and electrical conductivity of single-wall carbon nanotube thin films prepared by the Langmuir-Blodgett technique (2010)
Journal Article

Thin films containing single-wall carbon nanotubes (SWCNTs) have been prepared using the Langmuir-Blodgett (LB) technique. Atomic force microscopy has been used to investigate the morphology of these films. Films of pure SWCNTs were in the form of a... Read More about The morphology and electrical conductivity of single-wall carbon nanotube thin films prepared by the Langmuir-Blodgett technique.

Fabrication and Characterisation of MIS Organic Memory Devices (2009)
Book Chapter

Charge Storage in Pentacene/Polymethylmethacrylate Memory Devices (2009)
Journal Article

The electrical behavior of organic metal-insulator-semiconductor (MIS) structures incorporating a layer of self-assembled metallic nanoparticles is described. These have been based on thermally evaporated pentacene (semiconductor) and spin-coated pol... Read More about Charge Storage in Pentacene/Polymethylmethacrylate Memory Devices.

A pentacene-based organic thin film memory transistor (2009)
Journal Article

An organic memory device based on a pentacene thin film transistor is demonstrated. Gold nanoparticles have been used as the charge storage elements while a thin film of polymethylmethacrylate formed the gate insulator. The electrical characteristics... Read More about A pentacene-based organic thin film memory transistor.

The morphology, electrical conductivity and vapour sensing ability of inkjet-printed thin films of single-wall carbon nanotubes (2009)
Journal Article

Thin films containing single-wall carbon nanotubes (SWCNTs) have been prepared using the inkjet printing (IJP) technique. Atomic force microscopy (AFM) has been used to investigate the morphology of these layers. The inkjet printed films consisted of... Read More about The morphology, electrical conductivity and vapour sensing ability of inkjet-printed thin films of single-wall carbon nanotubes.

Negative refracting materials at THz frequencies. (2008)
Presentation / Conference Contribution

We demonstrate here, for the first time, the construction of artificial materials, which theoretically possess two separate pass-bands utilizing the difference between positive and negative refraction in the terahertz frequency regime. Experimental t... Read More about Negative refracting materials at THz frequencies..

Poole-Frenkel conduction in single wall carbon nanotube composite films built up by electrostatic layer-by-layer deposition (2008)
Journal Article

The fabrication of large area thin films of single wall carbon nanotubes (SWCNTs) using electrostatic layer-by-layer deposition is reported. The in-plane current versus voltage (I-V) characteristics were dependent on the concentration of SWCNTs trans... Read More about Poole-Frenkel conduction in single wall carbon nanotube composite films built up by electrostatic layer-by-layer deposition.

Memory effects in hybrid silicon-metallic nanoparticle-organic thin film structures (2008)
Journal Article

We report on the electrical behaviour of metal-insulator-semiconductor (MIS) structures fabricated on silicon substrates and using organic thin films as the dielectric layers. These insulating thin films were produced by different methods, including... Read More about Memory effects in hybrid silicon-metallic nanoparticle-organic thin film structures.

Memory effects in MIS structures based on silicon and polymethylmethacrylate with nanoparticle charge-storage elements. (2008)
Journal Article

We report on the electrical behaviour of metal–insulator–semiconductor (MIS) structures fabricated on p-type silicon substrates and using polymethylmethacrylate (PMMA) as the dielectric. Gold nanoparticles, single-wall carbon nanotubes and C60, depos... Read More about Memory effects in MIS structures based on silicon and polymethylmethacrylate with nanoparticle charge-storage elements..

Electrical behavior of memory devices based on fluorene-containing organic thin films (2008)
Journal Article

We report on switching and negative differential resistance (NDR) behaviors of crossed bar electrode structures based on Al/organic layer/Al devices in which the organic layer was a spin-coated layer of 7-{4-[5-(4-tert-butylphenyl)-1,3,4-oxadiazol-2-... Read More about Electrical behavior of memory devices based on fluorene-containing organic thin films.

Flexible polymer based artificial materials for terahertz applications. (2007)
Presentation / Conference Contribution

In this paper we report on the fabrication and testing of arrays of subwavelength apertures which are formed in a highly flexible polymer, PDMS (polydimethylsiloxane). PDMS can be elastically stretched to cause the deformation of any surface features... Read More about Flexible polymer based artificial materials for terahertz applications..

Passband filters for terahertz radiation based on dual metallic photonic structures (2007)
Journal Article

This paper reports on the development of two-dimensional metallic microstructures for the filtering of terahertz radiation. These structures are fabricated using ultraviolet-based processing of thick SU8 resist. This micromachining technique enables... Read More about Passband filters for terahertz radiation based on dual metallic photonic structures.