Benjamin De Lacy Costello's Outputs (63)

Emergent spiking in non-ideal memristor networks (2014)
Journal Article

© 2014 Elsevier Ltd. All rights reserved. Memristors have uses as artificial synapses and perform well in this role in simulations with artificial spiking neurons. Our experiments show that memristor networks natively spike and can exhibit emergent o... Read More about Emergent spiking in non-ideal memristor networks.

Drop-coated titanium dioxide memristors (2013)
Journal Article

The fabrication of memristors by drop-coating sol-gel Ti(OH)4 solution onto either aluminium foil or sputter-coated aluminium on plastic is presented. The gel layer is thick, 37 μm, but both devices exhibit good memristance I-V profiles. The drop coa... Read More about Drop-coated titanium dioxide memristors.

Towards slime mould chemical sensor: Mapping chemical inputs onto electrical potential dynamics of Physarum Polycephalum (2013)
Journal Article

Plasmodium of slime mould Physarum polycephalum is a large single celled organism visible unaided by the eye. This slime mould is capable of optimising the shape of its protoplasmic networks in spatial configurations of attractants and repellents. Su... Read More about Towards slime mould chemical sensor: Mapping chemical inputs onto electrical potential dynamics of Physarum Polycephalum.

Does the D.C. response of memristors allow robotic short-term memory and a possible route to artificial time perception? (2013)
Presentation / Conference Contribution

Time perception is essential for task switching, and in the mammalian brain appears alongside other processes. Memristors are electronic components used as synapses and as models for neurons. The d.c. response of memristors can be considered as a typ... Read More about Does the D.C. response of memristors allow robotic short-term memory and a possible route to artificial time perception?.

Toward turing’s A-type unorganised machines in an unconventional substrate: A dynamic representation in compartmentalised excitable chemical media (2013)
Book Chapter

© Springer-Verlag Berlin Heidelberg 2013. Turing presented a general representation scheme by which to achieve artificial intelligence – unorganised machines. Significantly, these were a form of discrete dynamical system and yet such representations... Read More about Toward turing’s A-type unorganised machines in an unconventional substrate: A dynamic representation in compartmentalised excitable chemical media.

Evolution of plastic learning in spiking networks via memristive connections (2012)
Journal Article

This paper presents a spiking neuroevolutionary system which implements memristors as plastic connections, i.e., whose weights can vary during a trial. The evolutionary design process exploits parameter self-adaptation and variable topologies, allowi... Read More about Evolution of plastic learning in spiking networks via memristive connections.

Creating unorganised machines from memristors (2012)
Presentation / Conference Contribution

On architectures of circuits implemented in simulated Belousov-Zhabotinsky droplets (2012)
Journal Article

When lipid vesicles filled with Belousov-Zhabotinsky (BZ) excitable chemical medium are packed in tight assembles, waves of excitation may travel between the vesicles. When several waves meet in a vesicle some fragments may deflect, others can annihi... Read More about On architectures of circuits implemented in simulated Belousov-Zhabotinsky droplets.

Time-dependent wave selection for information processing in excitable media (2012)
Journal Article

We demonstrate an improved technique for implementing logic circuits in light-sensitive chemical excitable media. The technique makes use of the constant-speed propagation of waves along defined channels in an excitable medium based on the Belousov-Z... Read More about Time-dependent wave selection for information processing in excitable media.

Different behaviour seen in flexible titanium dioxide sol-gel memristors dependent on the choice of electrode material (2012)
Book Chapter

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.

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

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.