Benjamin De Lacy Costello's Outputs (152)
Different behaviour seen in flexible titanium dioxide sol-gel memristors dependent on the choice of electrode materials (2012)
Presentation / Conference Contribution
Fabrication and modelling of titanium dioxide memristors (2012)
Presentation / Conference Contribution
Concept – including filamentary conduction in the mem-mon theory of memristance improves the model for ‘triangular’ memristors
Filamentary extension of the mem-con theory of memristance and its application to titanium dioxide sol-gel memristors (2012)
Preprint / Working Paper
Titanium dioxide sol-gel memristors have two different modes of operation, believed to be dependent on whether there is bulk memristance, i.e. memristance throughout the whole volume or filamentary memristance, i.e. memristance caused by the connecti... Read More about Filamentary extension of the mem-con theory of memristance and its application to titanium dioxide sol-gel memristors.
The effect of electrode size on memristor properties: an experimental and theoretical study (2012)
Preprint / Working Paper
The width of the electrodes is not included in the current phenomenological models of memristance, but is included in the memory-conservation (mem-con) theory of memristance. An experimental study of the effect of changing the top electrode width was... Read More about The effect of electrode size on memristor properties: an experimental and theoretical study.
Computing with liquid crystal fingers: Models of geometric and logical computation (2011)
Journal Article
When a voltage is applied across a thin layer of cholesteric liquid crystal, fingers of cholesteric alignment can form and propagate in the layer. In computer simulation, based on experimental laboratory results, we demonstrate that these cholesteric... Read More about Computing with liquid crystal fingers: Models of geometric and logical computation.
Comparison of ant-inspired gatherer allocation approaches using memristor-based environmental models (2011)
Presentation / Conference Contribution
Memristors are used to compare three gathering techniques in an already-mapped environment where resource locations are known. The All Site model, which apportions gatherers based on the modeled memristance of that path, proves to be good at increasi... Read More about Comparison of ant-inspired gatherer allocation approaches using memristor-based environmental models.
Logical and arithmetic circuits in Belousov-Zhabotinsky encapsulated disks (2011)
Journal Article
Excitation waves on a subexcitable Belousov-Zhabotinsky (BZ) substrate can be manipulated by chemical variations in the substrate and by interactions with other waves. Symbolic assignment and interpretation of wave dynamics can be used to perform log... Read More about Logical and arithmetic circuits in Belousov-Zhabotinsky encapsulated disks.
Neuromorphic computing with memristors: Preliminary experimental results (2011)
Presentation / Conference Contribution
Individual memristors have been observed demonstrating neuron-like spiking patterns. It has been shown
elsewhere that memristors provide superior modelling for neurons then the Hodgkin-Huxley model. Due to
these results we expect memristors to be e... Read More about Neuromorphic computing with memristors: Preliminary experimental results.
On computing in fine-grained compartmentalised Belousov-Zhabotinsky medium (2011)
Journal Article
We introduce results of computer experiments on information processing in a hexagonal array of vesicles filled with Belousov-Zhabotinsky (BZ) solution in a sub-excitable mode. We represent values of Boolean variables by excitation wave-fragments and... Read More about On computing in fine-grained compartmentalised Belousov-Zhabotinsky medium.
Vesicle computers: Approximating a Voronoi diagram using Voronoi automata (2011)
Journal Article
Irregular arrangements of vesicles filled with excitable and precipitating chemical systems are imitated by Voronoi automata - finite-state machines defined on a planar Voronoi diagram. Every Voronoi cell takes four states: resting, excited, refracto... Read More about Vesicle computers: Approximating a Voronoi diagram using Voronoi automata.
Aluminium electrodes effect the operation of titanium oxide sol-gel memristors (2011)
Preprint / Working Paper
By a comparison between memristors made with aluminium and gold electrodes, this letter demonstrates that aluminium electrodes are an essential component of the TiO$_2$ sol-gel flexible memristor . Both slow varying `analogue' and sudden switching `d... Read More about Aluminium electrodes effect the operation of titanium oxide sol-gel memristors.
Evolving spiking networks with variable memristors (2011)
Presentation / Conference Contribution
A diagnostic apparatus for analysing a sample to diagnose disease (2011)
Patent
A diagnostic apparatus (10) for analysing a sample to diagnose disease, the apparatus (10) comprising: a separating element (16) for separating gas derived from the sample into component parts; a sensor arrangement (18) coupled to the separating elem... Read More about A diagnostic apparatus for analysing a sample to diagnose disease.
Towards evolving spiking networks with memristive synapses (2011)
Presentation / Conference Contribution
This paper presents a spiking neuro-evolutionary system which implements memristors as neuromodulatory connections, ie whose weights can vary during a trial. The evolutionary design process exploits parameter self-adaptation and a constructionist app... Read More about Towards evolving spiking networks with memristive synapses.
Towards constructing one-bit binary adder in excitable chemical medium (2011)
Journal Article
The light-sensitive modification (ruthenium catalysed) of the Belousov-Zhabotinsky reaction exhibits various excitability regimes depending on the level of illumination. Within a narrow range of applied illumination levels the medium is in a sub-exci... Read More about Towards constructing one-bit binary adder in excitable chemical medium.
Computational modalities of Belousov-Zhabotinsky encapsulated vesicles (2011)
Journal Article
We present both simulated and partial empirical evidences for the computational utility of many connected vesicle analogues of an encapsulated nonlinear chemical processing medium. By connecting small vesicles containing a solution of sub-excitable B... Read More about Computational modalities of Belousov-Zhabotinsky encapsulated vesicles.
Towards arithmetic circuits in sub-excitable chemical media (2011)
Journal Article
A sub-excitable Belousov-Zhabotinsky medium exhibits localized travelling excitations (in contrast to an excitable medium exhibiting target or spiral waves). Initially assymetric perturbations give birth to excitation wave-fragments. The shape and ve... Read More about Towards arithmetic circuits in sub-excitable chemical media.
On the internalisation, intraplasmodial carriage and excretion of metallic nanoparticles in the slime mould, Physarum polycephalum (2011)
Journal Article
The plasmodium of Physarum polycephalum is a large single cell visible with the naked eye. When inoculated on a substrate with attractants and repellents the plasmodium develops optimal networks of protoplasmic tubes which span sites of attractants (... Read More about On the internalisation, intraplasmodial carriage and excretion of metallic nanoparticles in the slime mould, Physarum polycephalum.
On polymorphic logical gates in subexcitable chemical medium (2011)
Journal Article
In a subexcitable light-sensitive Belousov-Zhabotinsky (BZ) chemical medium an asymmetric disturbance causes the formation of localized traveling wave-fragments. Under the right conditions these wave-fragments can conserve their shape and velocity ve... Read More about On polymorphic logical gates in subexcitable chemical medium.