UK – Page 23 – TechConnect Briefs

Cerebral Oxygen Diffusion and Transport, at the Microscopic Level, and BOLD fMRI

Hadjistassou C.K., Moyle K., Ventikos Y., University of Oxford, UK

With the prospect of elucidating the Blood Oxygenation Level Dependent (BOLD) fMRI effect we consider cerebral oxygen transport at the microscopic scale. We concentrate on the transient response of a capillary-tissue system following brain activity. [...]

New Pair Force Evaluation Method for Parallel Molecular Dynamics in Arbitrary Geometries

Macpherson G.B., Reese J.M., University of Strathclyde, UK

We develop a new molecular dynamics algorithm for pair force evaluation of molecules occupying arbitrary polyhedral, unstructured mesh geometries. This is designed for hybrid MD/continuum simulation of nanofluidic systems. We show that the conventional MD [...]

Influences of the Surrounding Materials on CdTe Quantum Dots within Self-Assembled Thin Films

Gardner H.C., Bertoni C., Gallardo D.E., Dunn S., Cain M.G., National Physical Laboratory, UK

Semiconductor nanocrystals (NCs) have been successfully incorporated into nanostructured light emitting devices (NLEDs) and now promise applications in electronic, medical and telecommunication industries. To better understand and further develop NLEDs it is important to consider [...]

Photoactive titania and nanoparticulate silver-titania composite thin films as potent antimicrobial coatings

Page K., Parkin I.P., Wilson M., University College London, UK

Nanocrystalline titania (anatase) and Ag-doped titania (anatase) coatings were prepared on glass microscope slides by a sol-gel dip-coating method. The resultant coatings were characterised by X-ray diffraction, XANES, Raman, SEM/WDX, XPS and UV visible techniques [...]

Compact Model for Short Channel Effects in Source/Drain Engineered Nanoscale Double Gate (DG) SOI MOSFETs

Kranti A., Armstrong G.A., Queen’s University of Belfast, UK

In the present paper, a compact model for short channel effects (SCEs) in source/drain engineered nanoscale DG MOSFET, is proposed for the first time and the impact of spacer width (s), lateral source/drain doping gradient [...]

“Smart” Holograms – A Novel Diagnostics Platform

Kabilan S., Marshall A.J., Horgan A., Creasey C.D., Kew S.J., Dean K.E.S., Terrell S.F., Affleck L.J., Smart holograms, UK

“Smart” holograms are novel sensor systems which utilise diffraction as the transduction method for the detection of physical or (bio)chemical stimuli. Interaction of these sensors with a specific analyte or stimulus changes the colour, image [...]

Validation for Micro- and Nano-Sensors

Henry M., Oxford University, UK

The rapid development of sensor and processing technologies is offering many opportunities for embedding new functionality within sensing devices. One important area is the development of diagnostics. While the generation of diagnostic error codes is [...]

Size does matter – the case for big motes

Newman R.M., Gaura E.I., Coventry University, UK

An account is given of the two scools of mote design for wireless sensor networks, the maxi-mote and the mini-mote. Both approaches have their advantages, but it is argued that the maxi-mote approach is more [...]

Experimental Localization with MICA2 Motes

Allen M.P., Gaura E.I., Newman R.M., Mount S.N.I., Coventry University, UK

As research into Wireless Sensor Networks (WSNs) increases, it becomes more and more apparent that knowledge of sensors’ physical position within a network is a necessity. A sensor’s data are only useful if put in [...]

Silicon MEMS for Photonic Bandgap Devices

Yeatman E.M., Lipson A., Imperial College London, UK

Photonic Bandgap (PBG) devices have been widely investigated because of their capabilities for manipulating light within highly constrained dimensions. Many PBG devices have been fabricated in III-V semiconductors to take advantage of their active optoelectronic [...]