Skip to main content

Research Repository

See what's under the surface


Contactless sensing of liquid marbles for detection, characterisation & computing (2019)
Journal Article
Draper, T. C., Phillips, N., Weerasekera, R., Mayne, R., Fullarton, C., de Lacy Costello, B., & Adamatzky, A. (2020). Contactless sensing of liquid marbles for detection, characterisation & computing. Lab on a Chip, 20(1), 136-146. https://doi.org/10.1039/c9lc01001g

Liquid marbles (LMs) are of growing interest in many fields, including microfluidics, microreactors, sensors, and signal carriers. The generation of LMs is generally performed manually, although there has recently been a burst of publications involvi... Read More about Contactless sensing of liquid marbles for detection, characterisation & computing.

Mapping outcomes of liquid marble collisions (2019)
Journal Article
Draper, T. C., Fullarton, C., Mayne, R., Phillips, N., Canciani, G. E., De Lacy Costello, B. P., & Adamatzky, A. (2019). Mapping outcomes of liquid marble collisions. Soft Matter, 15(17), 3541-3551. https://doi.org/10.1039/c9sm00328b

© 2019 The Royal Society of Chemistry. Liquid marbles (LMs) have many promising roles in the ongoing development of microfluidics, microreactors, bioreactors, and unconventional computing. In many of these applications, the coalescence of two LMs is... Read More about Mapping outcomes of liquid marble collisions.

Thermal switch of oscillation frequency in belousov- zhabotinsky liquid marbles (2019)
Journal Article
Adamatzky, A., Fullarton, C., Phillips, N., Costello, B. D. L., & Draper, T. C. (2019). Thermal switch of oscillation frequency in belousov- zhabotinsky liquid marbles. Royal Society Open Science, 6(4), 190078. https://doi.org/10.1098/rsos.190078

© 2019 The Authors. External control of oscillation dynamics in the Belousov- Zhabotinsky (BZ) reaction is important for many applications including encoding computing schemes. When considering the BZ reaction, there are limited studies dealing with... Read More about Thermal switch of oscillation frequency in belousov- zhabotinsky liquid marbles.

Liquid Marble Actuator for Microfluidic Logic Systems (2018)
Journal Article
Draper, T. C., Fullarton, C., Phillips, N., de Lacy Costello, B. P. J., & Adamatzky, A. (2018). Liquid Marble Actuator for Microfluidic Logic Systems. Scientific Reports, 8(1), https://doi.org/10.1038/s41598-018-32540-w

© 2018, The Author(s). A mechanical flip-flop actuator has been developed that allows for the facile re-routing and distribution of liquid marbles (LMs) in digital microfluidic devices. Shaped loosely like a triangle, the actuating switch pivots fro... Read More about Liquid Marble Actuator for Microfluidic Logic Systems.

Belousov-Zhabotinsky reaction in liquid marbles (2018)
Journal Article
Fullarton, C., Draper, T., Phillips, N., de Lacy Costello, B., & Adamatzky, A. (2019). Belousov-Zhabotinsky reaction in liquid marbles. Journal of Physics: Materials, 2(1), https://doi.org/10.1088/2515-7639/aaed4c

In Belousov–Zhabotinsky (BZ) type reactions, chemical oxidation waves can be exploited to produce reaction-diffusion processors. This paper reports on a new method of encapsulating BZ solution in a powder coating of either polyethylene (PE) or polyte... Read More about Belousov-Zhabotinsky reaction in liquid marbles.

Evaporation, Lifetime, and Robustness Studies of Liquid Marbles for Collision-Based Computing (2018)
Journal Article
Fullarton, C., Draper, T., Phillips, N., Mayne, R., de Lacy Costello, B., & Adamatzky, A. (2018). Evaporation, Lifetime, and Robustness Studies of Liquid Marbles for Collision-Based Computing. Langmuir, 34(7), 2573-2580. https://doi.org/10.1021/acs.langmuir.7b04196

© 2018 American Chemical Society. Liquid marbles (LMs) have recently attracted interest for use as cargo carriers in digital microfluidics and have successfully been implemented as signal carriers in collision-based unconventional computing circuits.... Read More about Evaporation, Lifetime, and Robustness Studies of Liquid Marbles for Collision-Based Computing.

Mechanical sequential counting with liquid marbles (2018)
Journal Article
Draper, T., Fullarton, C., Phillips, N., de Lacy Costello, B., & Adamatzky, A. (2018). Mechanical sequential counting with liquid marbles. Lecture Notes in Artificial Intelligence, 10867 LNCS, 59-71. https://doi.org/10.1007/978-3-319-92435-9_5

© 2018, Springer International Publishing AG, part of Springer Nature. Here we demonstrate the first working example of a liquid marble-operated sequential binary counting device. We have designed a lightweight gate that can be actuated by the low ma... Read More about Mechanical sequential counting with liquid marbles.

Liquid marble interaction gate for collision-based computing (2017)
Journal Article
de Lacy Costello, B. P., Draper, T. C., Draper, T., Fullarton, C., Phillips, N., de Lacy Costello, B., & Adamatzky, A. (2017). Liquid marble interaction gate for collision-based computing. Materials Today, 20(10), 561-568. https://doi.org/10.1016/j.mattod.2017.09.004

© 2017 Elsevier Ltd Liquid marbles are microliter droplets of liquid, encapsulated by self-organized hydrophobic particles at the liquid/air interface. They offer an efficient approach for manipulating liquid droplets and compartmentalizing reactions... Read More about Liquid marble interaction gate for collision-based computing.

Practical circuits with Physarum Wires (2016)
Journal Article
Whiting, J. G., Whiting, J., Mayne, R., Moody, N., de Lacy Costello, B., & Adamatzky, A. (2016). Practical circuits with Physarum Wires. Biomedical Engineering Letters, 6(2), 57-65. https://doi.org/10.1007/s13534-016-0212-8

© 2016, Korean Society of Medical and Biological Engineering and Springer. Purpose: Protoplasmic tubes of Physarum polycephalum, also know as Physarum Wires (PW), have been previously suggested as novel bio-electronic components. Until recently, prac... Read More about Practical circuits with Physarum Wires.

Evolving unipolar memristor spiking neural networks (2015)
Journal Article
Howard, G. D., Bull, L., & De Lacy Costello, B. (2015). Evolving unipolar memristor spiking neural networks. Connection Science, 27(4), 397-416. https://doi.org/10.1080/09540091.2015.1080225

© 2015 Taylor & Francis. Neuromorphic computing – brain-like computing in hardware – typically requires myriad complimentary metal oxide semiconductor spiking neurons interconnected by a dense mesh of nanoscale plastic synapses. Memristors are freq... Read More about Evolving unipolar memristor spiking neural networks.

Slime mould memristors (2015)
Journal Article
Gale, E., Adamatzky, A., & de Lacy Costello, B. (2015). Slime mould memristors. BioNanoScience, 5(1), 1-8

In laboratory experiments we demonstrate that protoplasmic tubes of acellular slime mould \emph{Physarum polycephalum} show current versus voltage profiles consistent with memristive systems and that the effect is due to the living protoplasm of the... Read More about Slime mould memristors.

Transfer function of protoplasmic tubes of Physarum polycephalum (2015)
Journal Article
Whiting, J., de Lacy Costello, B., & Adamatzky, A. (2015). Transfer function of protoplasmic tubes of Physarum polycephalum. BioSystems, 128, 48-51. https://doi.org/10.1016/j.biosystems.2015.01.009

The slime mould Physarum polycephalum is a large single celledmyxomycete; its plasmodium consists of tubes which extend to find sources of food. It has been previously shown that the tubes are conductive with a resistance of approximately 3MV, and ha... Read More about Transfer function of protoplasmic tubes of Physarum polycephalum.

The effect of changing electrode metal on solution-processed flexible titanium dioxide memristors (2015)
Journal Article
Gale, E., Pearson, D., Kitson, S., Adamatzky, A., & de Lacy Costello, B. (2015). The effect of changing electrode metal on solution-processed flexible titanium dioxide memristors. Materials Chemistry and Physics, 162, 20-30. https://doi.org/10.1016/j.matchemphys.2015.03.037

Flexible solution-processed memristors show different behaviour dependent on the choice of electrode material. Use of gold for both electrodes leads to switchable WORM (Write Once Read Many times) resistive devices. Use of aluminium for both electrod... Read More about The effect of changing electrode metal on solution-processed flexible titanium dioxide memristors.

Evolving spiking networks with variable resistive memories (2014)
Journal Article
Gale, E., Howard, G., Howard, G. D., Bull, L., de Lacy Costello, B., & Adamatzky, A. (2014). Evolving spiking networks with variable resistive memories. Evolutionary Computation, 22(1), 79-103. https://doi.org/10.1162/EVCO_a_00103

Neuromorphic computing is a brainlike information processing paradigm that requires adaptive learning mechanisms. A spiking neuro-evolutionary system is used for this purpose; plastic resistive memories are implemented as synapses in spiking neural n... Read More about Evolving spiking networks with variable resistive memories.

Drop-coated titanium dioxide memristors (2014)
Journal Article
Gale, E., Mayne, R., Adamatzky, A., & De Lacy Costello, B. (2014). Drop-coated titanium dioxide memristors. Materials Chemistry and Physics, 143(2), 524-529. https://doi.org/10.1016/j.matchemphys.2013.09.013

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.

Sensory fusion in Physarum polycephalum and implementing multi-sensory functional computation (2014)
Journal Article
de Lacy Costello, B. P. J., Whiting, J. G. H., Whiting, J., de Lacy Costello, B., & Adamatzky, A. (2014). Sensory fusion in Physarum polycephalum and implementing multi-sensory functional computation. BioSystems, 119(1), 45-52. https://doi.org/10.1016/j.biosystems.2014.03.003

Surface electrical potential and observational growth recordings were made of a protoplasmic tube of the slime mould Physarum polycephalum in response to a multitude of stimuli with regards to sensory fusion or multisensory integration. Each stimulus... Read More about Sensory fusion in Physarum polycephalum and implementing multi-sensory functional computation.

Emergent spiking in non-ideal memristor networks (2014)
Journal Article
Costello, B. D. L., Gale, E., de Lacy Costello, B., & Adamatzky, A. (2014). Emergent spiking in non-ideal memristor networks. Microelectronics Journal, 45(11), 1401-1415. https://doi.org/10.1016/j.mejo.2014.06.008

© 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.

Slime mould logic gates based on frequency changes of electrical potential oscillation (2014)
Journal Article
de Lacy Costello, B. P. J., Whiting, J. G. H., Whiting, J., de Lacy Costello, B., & Adamatzky, A. (2014). Slime mould logic gates based on frequency changes of electrical potential oscillation. BioSystems, 124, 21-25. https://doi.org/10.1016/j.biosystems.2014.08.001

Physarum polycephalum is a large single amoeba cell, which in its plasmodial phase, forages and connects nearby food sources with protoplasmic tubes. The organism forages for food by growing these tubes towards detected foodstuff, this foraging behav... Read More about Slime mould logic gates based on frequency changes of electrical potential oscillation.

Towards slime mould chemical sensor: Mapping chemical inputs onto electrical potential dynamics of Physarum Polycephalum (2013)
Journal Article
De Lacy Costello, B. P., Whiting, J. G., Whiting, J., de Lacy Costello, B., & Adamatzky, A. (2014). Towards slime mould chemical sensor: Mapping chemical inputs onto electrical potential dynamics of Physarum Polycephalum. Sensors and Actuators B: Chemical, 191, 844-853. https://doi.org/10.1016/j.snb.2013.10.064

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
Gale, E., de Lacy Costello, B., & Adamatzky, A. (2013, May). Does the D.C. response of memristors allow robotic short-term memory and a possible route to artificial time perception?. Paper presented at Workshop Unconventional Approaches to Robotics, Automation and Control Inspired by Nature (UARACIN) in:

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?.