Outputs (271)

Combining optical trapping in a microfluidic channel with simultaneous micro-Raman spectroscopy and motion detection (2014)
Presentation / Conference Contribution

Since their invention by Ashkin optical tweezers have demonstrated their ability and versatility as a non-invasive tool for micromanipulation. One of the most useful additions to the basic optical tweezers system is micro-Raman spectroscopy, which pe... Read More about Combining optical trapping in a microfluidic channel with simultaneous micro-Raman spectroscopy and motion detection.

Temperature dependence of non-linear electrical conduction behavior in a screen-printed multi-component nanocomposite (2013)
Presentation / Conference Contribution

Nanocomposite materials are of growing applications importance in many areas, particularly touch sensitive surfaces. Here, current-voltage measurements were performed over a range of temperatures and static compressive loadings on a new variant of a... Read More about Temperature dependence of non-linear electrical conduction behavior in a screen-printed multi-component nanocomposite.

A novel screen-printed multi-component nanocomposite ink with a pressure sensitive electrical resistance functionality (2013)
Presentation / Conference Contribution

Here, a novel functional ink is described that is composed of multiple nanoscale components and exhibits pronounced touch pressure sensitive electrical properties ideal for applications in switching, sensing and touch sensitive surfaces. The ink can... Read More about A novel screen-printed multi-component nanocomposite ink with a pressure sensitive electrical resistance functionality.

Vapor sensing properties of a conductive polymer composite containing Nickel particles with nano-scale surface features (2013)
Presentation / Conference Contribution

This paper presents an unusual conductive polymer composite, produced by Peratech Ltd under the trademark QTC™, which has many vapor sensing applications. Nickel particles are intimately coated by an elastomeric binder such that no percolative conduc... Read More about Vapor sensing properties of a conductive polymer composite containing Nickel particles with nano-scale surface features.

Internal Flows and Particle Transport Inside Picoliter Droplets of Binary Solvent Mixtures (2013)
Presentation / Conference Contribution

The flows in evaporating droplets of binary mixtures are much more complicated than single solvent systems. Solutal Marangoni flows are generated due to differential evaporation of components. High-speed imaging techniques are used to visualize how i... Read More about Internal Flows and Particle Transport Inside Picoliter Droplets of Binary Solvent Mixtures.

Modelling allosteric signalling in protein homodimers (2011)
Presentation / Conference Contribution

Allostery in protein systems is a thermodynamic phenomenon. Allosteric response is driven by the free energy differences obtained in different binding events, which, in principle, contain contributions from both enthalpic and entropic changes. While... Read More about Modelling allosteric signalling in protein homodimers.

TeraHertz scattering : comparison of a novel theoretical approach with experiment (2006)
Presentation / Conference Contribution

At the present time the interaction of Terahertz (THz) radiation with random structures is not well understood. Scattering effects are particularly relevant in this spectral regime, where the wavelength, and the size and separation of scattering cent... Read More about TeraHertz scattering : comparison of a novel theoretical approach with experiment.

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..

Structure property correlations in a new rigid rod luminescent conjugated polymer, polypyridine. (1999)
Presentation / Conference Contribution

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..

Terahertz micro-spectroscopy using a transient mirror technique. (2007)
Presentation / Conference Contribution

In situ vibrational spectroscopy of thin organic films confined at the solid-solid interface (2006)
Presentation / Conference Contribution

Interaction of peptides and proteins with planar supported lipid bilayers studied by Raman scattering (2006)
Presentation / Conference Contribution

Micromachined Terahertz Waveguides with Embedded Metal Rods (2008)
Presentation / Conference Contribution

In this paper we report on a novel fabrication approach for the manufacture of terahertz waveguides with embedded metal rods. It is anticipated that this type of structure could be used for sub-wavelength imaging or as a method to effectively couple... Read More about Micromachined Terahertz Waveguides with Embedded Metal Rods.

A visible large area light emitting diode fabricated from porous silicon using a conducting polyaniline contact (1995)
Presentation / Conference Contribution

Artificial plasmonic materials for THz applications (2007)
Presentation / Conference Contribution

This paper reports on the development of micromachined pillar arrays for the filtering of terahertz radiation. These pillar arrays are fabricated using ultraviolet based processing of thick SU8. This micromachining technique enables the array pattern... Read More about Artificial plasmonic materials for THz applications.

Oligo(fluorenyl)pyridine ligands and their iridium complexes: Synthesis, photophysical properties and electrophosphorescent devices (2005)
Presentation / Conference Contribution

Screened Exchange Calculations of Semiconductor Band Structures (2005)
Presentation / Conference Contribution

We have calculated the band structures of several group IV and III-V semiconductors from first principles. The technique we have employed is the screened exchange method, which is an extension of the commonly used Kohn-Sham density functional theory... Read More about Screened Exchange Calculations of Semiconductor Band Structures.

High-dipole, high-beta molecules with blue window transparency (1994)
Presentation / Conference Contribution

Ultrafast electron tunneling times in reverse-biased quantum-well laser structures (1992)
Presentation / Conference Contribution