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A squaraine dye incorporating two carboxylic acid attaching groups has been synthesised and used successfully in both liquid and solid-state solar cells, with solar energy to electricity conversion efficiencies (eta) under AM 1.5 G irradiation (100 mW cm(-2)) of 3.7 and 1.5% and short-circuit current densities (J(sc)s) of 8.6 and 4.2 mA cm(-2), with(More)
The goal of this work is to develop an approach to the design of natural and immersive interaction methods for three-dimensional virtual environments. My thesis is that habitation and presence in any environment are based on a continuous process of perception and action between a person and his/her surroundings. The current practice of virtual environments,(More)
The mobile phone is rapidly emerging as one of the most commonly carried pieces of personal, readily accessible digital technology. These phones are no longer just for making calls. They function as digital cameras, PDAs, internet consoles, and email and instant messaging clients. The demand for improved operating systems and programming languages has given(More)
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