Liquid Marble Photosensor

Andrew Adamatzky; Michail-Antisthenis Tsompanas; Richard Mayne; Thomas C. Draper

REVIEW 4 major objections 4 minor 54 references

Liquid Marble Photosensor

T0 review · 4 major / 4 minor · reviewed 2026-08-14 · deepseek-v4-flash

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Pith's one-line read A Belousov-Zhabotinsky liquid marble with two inserted electrodes acts as a reusable photosensor: light halts its oscillation, darkness restarts it.

desk verdict A clearly reported BZ liquid marble photosensor prototype whose photochemical mechanism is asserted rather than tested; the light response itself is credible, but the paper needs a heating/evaporation control before the title claim holds. read the letter →

arxiv 1908.00632 v1 pith:R3AAGNLZ submitted 2019-08-01 cs.ET

Andrew Adamatzky , Michail-Antisthenis Tsompanas , Thomas C. Draper , Richard Mayne This is my paper · ORCID

classification cs.ET

keywords liquidmarblesBelousov-ZhabotinskyreactionphotosensorelectricalpotentialoscillationsOregonatormodelunconventionalcomputingchemicalwavefrontsphotochemicalinhibition

verification ladder T0 review T1 audit T2 compute T3 formal

The pith

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The reading

The paper tries to show that a liquid marble—a droplet of Belousov-Zhabotinsky (BZ) reaction medium coated with hydrophobic polyethylene powder—can be wired as a photosensor. Two electrodes stuck into the marble record a potential difference that oscillates as oxidation wave-fronts cross them. When a strong light is shone on the marble, the wave-fronts are inhibited and the electrical signal stops oscillating; switching the light off restores oscillations within roughly forty seconds. Because the hydrophobic coating keeps each marble dry and self-contained, the authors argue such sensors could be clustered into arrays and wired into soft, liquid-based electronic or computing circuits.

What carries the argument

The load-bearing object is the liquid marble photosensor itself: a roughly 62 µL droplet of ferroin-catalysed BZ reagent coated with ultra-high-density polyethylene powder, through which two iridium-coated steel needle electrodes are inserted. The electrodes act as the readout: the potential difference they record oscillates when oxidation wave-fronts pass between them, and the waveform's shape depends on the direction and angle at which the fronts cross. The light source (a 3250 K, 18 MLux cold lamp) is the stimulus. The explanatory mechanism invoked is the photochemical sensitivity of the BZ catalyst—light increases the effective rate of inhibitor production—modelled by raising the parameter φ in the Oregonator equations, which in simulation drives wave-fronts to vanish and the computed electrode potential to stop oscillating.

What would settle it

Measure the temperature inside a BZ liquid marble with a fine thermocouple under the 18 MLux lamp, and run the same illumination through a heat-absorbing filter (e.g., a water cell) that removes infrared but keeps visible light. If the marble halts only when it heats up, or if a dark control heated to the same temperature halts as well, the photochemical photosensor interpretation would be falsified.

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Extended reading notes

Core claim

The central claim is that illumination suppresses the oscillatory electrical signature of a BZ liquid marble, and that the suppression is repeatable: across nineteen marbles, stimulation with an 18 MLux cold light source nearly instantaneously halted oscillations in the typical-frequency group (sixteen marbles), with recovery after the light was removed taking about forty seconds. The paper also reports that after stimulation, marbles split into two groups: those that oscillate at roughly half their original frequency (Group A) and those that roughly double it (Group B). Low-frequency marbles behaved differently—two halted instantly, one kept oscillating at a reduced period before halting. A two-variable Oregonator model with the light parameter φ increased is used to reproduce the recorded waveforms, including the direction-dependent spike shapes that arise from wave-fronts crossing the two electrodes.

Load-bearing premise

The claim rests on the assumption that the cessation of oscillations under the lamp is caused by the light's photochemical effect on the BZ reaction, not by heating or evaporation from that same lamp; the paper reports no temperature measurements and includes no control marble exposed to the same lamp with the light's heat filtered out.

Editorial extensions

If this is right

A BZ liquid marble can serve as an optical input element in unconventional computing circuits, converting light patterns into measurable electrical signals.
Because the polyethylene coating prevents wetting, marbles can be packed into dense clusters to act as an array of photosensors for optical inputs.
The sensor is reusable for its lifetime (up to about one hour under the reported conditions) and responds to repeated light pulses, allowing sequences of on/off stimulation to be detected.
Light control offers a scalable, non-contact alternative to the earlier Peltier-based thermal switching of BZ marble oscillations.
The recorded electrical potential provides a direct interface between chemical wave activity and conventional electronics, since the electrode signal is the output.

Reading between the lines

Editorial extensions of the paper, not claims the author makes directly.

If the photochemical mechanism is confirmed with heat-filtered controls, the same design could be tuned into a wavelength-selective light detector by choosing BZ catalysts with different absorption spectra, something the paper does not explore.
The on/off response to light suggests a simple write/erase scheme—illumination stores a 'halt' state, darkness erases it—though the paper does not test whether the halt state is retained after the light is removed for long periods.
The Oregonator explanation implies that a spatially patterned light field could shape wave-front motion inside a single marble, effectively giving a one-marble image-processing element; this is a testable extension of the reported simulation framework.
A straightforward extension would be to measure the dose-response curve: the paper uses one light intensity, but the model's φ parameter predicts that weaker light should slow rather than halt oscillations, which can be tested experimentally.

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Signed reviews

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Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, and a circularity audit.

Desk Editor's Note

read the letter

You should know two things about this one. First, the core observation is real: a BZ liquid marble with two electrodes stops oscillating when you hit it with a strong light and recovers when the light goes off. That is shown directly in multiple traces across 19 marbles, and the recovery times are consistent. Second, the paper does not actually test the mechanism it claims. The abstract says the oxidation wave-fronts are hindered by light, but the only stimulus is a 18 MLux lamp, and there is no temperature measurement, no sham marble under the same light, and no wavelength control. At that intensity, heating or accelerated evaporation could easily suppress BZ oscillations, and the 'instant' halt could be a thermal quench. The Oregonator simulations vary phi but are not explicitly tied to illumination, so they don't rescue the photochemical story. This is a real soft spot, but not a fatal one: the device still works as a light-triggered switch, just possibly through a different transduction path than advertised.

What is new is modest but genuine: combining the authors' prior liquid marble and electrode readout with optical stimulation. The thermal sensor from their own group is the obvious predecessor, and ref [53] already describes a BZ redox-potential image sensor, so this is an incremental step in an established program. That said, the paper is cleanly written, the setup is easy to follow, and the supplementary videos are a nice touch. The grouping of post-stimulus responses (Group A/B) is a useful empirical observation even if the explanation is hand-wavy.

The weakest part is the simulation in Fig. 6. The source periods and lifetimes are chosen from arbitrary intervals to make the model produce bursts, and then the match is offered as evidence. That is curve fitting, not explanation. It does not affect the experimental sensor claim, but it should not be presented as verification. A minor point: there is no sensitivity calibration or dose-response curve, so 'photosensor' is more of a proof of concept than a characterized device.

Overall: the central observation is solid and reproducible in principle, but the mechanism is under-supported. This is a typical prototype paper for the unconventional computing crowd. A serious referee should ask for a simple control—dark marble under the same lamp with an IR filter, or at least a temperature probe—and softer mechanism language. With that, it would be fine for a letters-style venue. I would not cite it in my own work unless I were actively working on liquid marble sensors, and I would not build anything on the photochemical explanation without more evidence.

Referee Report

4 major / 4 minor

Summary. The paper reports a photo-sensor made from a Belousov-Zhabotinsky (BZ) liquid marble. Two electrodes inserted into the marble record a potential difference that oscillates as oxidation wave-fronts pass. The authors report that strong illumination (18 MLux from a cold light source for about 300 s) halts these oscillations nearly instantly in all tested marbles, that oscillations resume roughly 40 s after the light is switched off, and that the response is reusable over a lifetime of about one hour. Data from 19 marbles are presented, split into low-frequency and typical-frequency groups, and the post-stimulus behavior is divided into two groups based on whether the oscillation period increases or decreases. Oregonator-based simulations are used to illustrate how wave-front direction and source location shape the recorded potential traces. The central claim is that this system is a working, reusable optical-to-electrical sensor based on photochemical inhibition of BZ wave-fronts.

Significance. If the mechanism is truly photochemical, this is a simple and reusable optical-to-electrical transducer that combines the fields of liquid marbles and unconventional computing, extending earlier work on BZ liquid marble thermal sensors. The strengths are the direct experimental evidence that illumination suppresses electrical oscillations in multiple exemplar traces, the demonstration of reusability, and the straightforward electrode readout that does not require transparent coatings. The significance is limited by the absence of controls that would rule out thermal or evaporative causes of the observed cessation, and by the lack of any quantitative sensor characterization; as written, the claim that this is a photosensor rather than a thermo/hygro-sensor is not fully supported.

major comments (4)

[§2 Methods, stimulus; §3 Results] The central claim that illumination hinders oxidation wave-fronts is not supported by the experiments because no control for heating or evaporation is provided. The light source is a PL2000 lamp at 18 MLux for ~300 s; at this intensity, radiative heating could increase the marble temperature, accelerate evaporation, change reagent concentrations and ionic strength, and shift electrode potentials, any of which could suppress BZ oscillations. The paper reports no temperature measurement, no sham marble under the same lamp, no wavelength filter, and no dark thermal control. Without such a control, the observed cessation and recovery could be thermal rather than photochemical, and the title/abstract assertion of a photo-sensor is not established.
[§3.2, Fig. 6] The bursting model in Fig. 6 is not a test of any mechanism. The source period and lifetime are chosen randomly from intervals [100, 700] and [1300, 6300] with no constraint from the experimental data, and the resulting burst-like signal is then cited as an explanation of experimentally observed bursts. This is a post-hoc construction, not validation. The authors should either state explicitly that the simulation is purely illustrative, or fit the model to a specific experimental trace and quantify the agreement.
[§2 Methods, Eq. (1); §3 Results] The Oregonator simulations vary the parameter φ in [0.05, 0.08] (called the rate of inhibitor production), but the Methods do not state that φ represents illumination intensity or how the chosen range maps to the experimental light source. Consequently, the simulations do not demonstrate that light-induced photochemistry can explain the observed cessation in the marble experiments; they only show that some parameter perturbation in a model can suppress oscillations. The link between φ and illumination must be made explicit and quantitative, or the simulations should not be used as evidence for the photochemical mechanism.
[§3.1, §3.2, §4 Summary] The claimed sensor functionality is only qualitative. There is no intensity-response curve, no detection threshold, no statistical test for the distribution of response and recovery times (reported as means without confidence intervals or effect sizes), and no test of repeatability across multiple on/off cycles for a single marble. The labels 'nearly instant' and the grouping into Groups A and B are based on post-hoc observations. For a paper titled and framed around a 'photosensor', at least one quantitative calibration and a measure of inter-marble variability are needed to support the functional claim.

minor comments (4)

[Abstract] The abstract says 'coated by a hydrophobic power'; this should be 'hydrophobic powder'.
[Fig. 2 and Fig. 4] The time axes are labeled 'Time, ms' but are scaled by 10^5 and 10^6; please check whether the unit should be seconds or whether the axis labels and scaling are consistent with the reported oscillation periods.
[§3.1] The text refers to the 'eastern site' and 'western part' of the marble; consider using consistent compass or clock-face notation for the source locations.
[§2 Methods] The sentence describing the preparation of the BZ medium says 'resulting in a transiently orange solution caused by the emission of bromine gas'; the causal link to bromine emission is likely a simplification and should be worded more carefully.

Circularity Check

2 steps flagged · score 4.0 of 10

Experimental photosensor claim is independent, but the Oregonator 'verifications' of observed spike and burst patterns are demonstrations by construction rather than predictions.

fitted input called prediction [Section 3.1, Fig. 3 (Oregonator verification of low-frequency oscillations)]
"The experimental lab findings (Fig. 2(c)) were verified in the Oregonator model, as illustrated in Fig. 3. We excited the medium once on the eastern site of the marble (Fig. 3a). ... After that we initiated a source of repeating oscillations on the 'western' part of the marble (Fig. 3e). The excitation wave-fronts cross the electrodes three times (Figs. 3f, 3g and 3h), which results in the three latter spikes shown in the plot Fig. 3i."

The model 'verification' is constructed from the experimental trace: the east-side single excitation is inserted to produce the first ascending spike, and a west-side repeating source is inserted to produce the three later spikes. The simulated waveform therefore mirrors the input source schedule by construction; it is not a parameter-free prediction that could fail. Calling this a verification is circular because the explanatory model's output is stipulated to match the data rather than independently derived. This circularity is limited to the interpretive modeling and does not affect the direct experimental photosensor claim.
fitted input called prediction [Section 3.2, Fig. 6 (modelling of bursting spiking of non-stimulated marble)]
"We can model this phenomenon by choosing the location of a source at random, allowing the source to oscillate with an arbitrary period, and allocating a short life time. When one source of excitation waves dies it is replaced by another source with randomly chosen parameters and location. The simulated signal bursts are shown in Fig. 6."

The bursty output is generated by imposing randomly chosen source periods (interval [100, 700]) and lifetimes (interval [1300, 6300]) plus random locations. Bursting is thus an input assumption, not a derived outcome; any sufficiently variable source schedule will produce burst-like signal trains. The visual match with experimentally recorded bursts is therefore demonstration by construction rather than a test of the proposed mechanism. This is the 'explanations of recorded activity' promised in the abstract, but it does not make the central sensor claim circular.

full rationale

The central sensor claim is experimental and self-contained: electrodes inserted into BZ liquid marbles record potential oscillations that cease under illumination and resume after removal, so the main result does not reduce to a fitted parameter or a self-citation. The mechanistic attribution to photochemical inhibition of wavefronts is not fully controlled (no temperature measurement, no sham marble under the same lamp), but that is a correctness and confound concern, not circularity. Self-citations such as the prior thermal sensor and the BZ marble pattern study are motivational and not load-bearing, and no uniqueness theorem is imported. However, the paper's Oregonator 'verifications' in Fig. 3 and Fig. 6 are post-hoc constructions: source positions, periods, and lifetimes are chosen so that the simulated traces match the experimentally recorded spikes and bursts. Because those outputs are stipulated by the inputs, the explanatory modeling is circular in a limited, non-load-bearing sense. The empirical photosensor demonstration itself remains independent, so the overall circularity is partial rather than complete.

Assumptions & free parameters 7 free parameters · 5 assumptions · 0 invented entities

The central experimental claim itself rests mainly on direct measurement, but the interpretation of the signals and the simulations introduce several hand-picked parameters and unstated physical assumptions. The most important is the assumption that the bright lamp acts photochemically rather than thermally. The Oregonator simulations add seven effectively free choices and are not validated against the experimental traces quantitatively.

free parameters (7)

Oregonator time-scale ratio epsilon = 0.02
Set by hand in Eq. 1; controls the ratio of activator and inhibitor timescales in all simulations.
Oregonator stoichiometric coefficient f = 1.4
Set by hand in Eq. 1; no calibration to the experimental BZ recipe is described.
Oregonator scaling parameter q = 0.002
Set by hand in Eq. 1; affects propagation and inhibition thresholds.
Light-sensitive parameter phi = varied over [0.05, 0.08]
Used in Eq. 1 to represent illumination effects; the mapping from physical light intensity to phi is not calibrated.
Excitation source period interval = [100, 700] iterations
Ad hoc choice in the bursting simulation of Fig. 6; chosen to reproduce observed bursts, not measured.
Excitation source lifetime interval = [1300, 6300] iterations
Ad hoc choice in the bursting simulation of Fig. 6; chosen to reproduce observed bursts, not measured.
Oregonator diffusion coefficient D_u = not stated
Appears in Eq. 1 but no numeric value is given, making the simulations under-specified.

assumptions (5)

domain assumption Two-variable Oregonator model in Eq. 1 captures the relevant wave dynamics of the experimental BZ marble.
Used for all simulated potential traces in Figs. 3, 5, and 6; the paper does not quantitatively validate the model against measured amplitudes or periods.
domain assumption The recorded electrical potential difference corresponds to the difference in activator concentration summed over the two electrode domains.
The model computes potential as sum over E2 minus sum over E1, and experimental spikes are interpreted through this mapping without calibration.
domain assumption Illumination affects only the photochemical BZ reaction and does not significantly heat or evaporate the marble.
The light source delivers 18 MLux for about 300 seconds; no temperature or evaporation measurements are reported, and this is the main untested premise behind the 'photosensor' interpretation.
domain assumption Electrode insertion does not alter the BZ dynamics in a way that dominates the measured signal.
Two sub-dermal needles puncture the marble; no control experiments compare punctured and unpunctured marbles.
domain assumption The ferroin-catalyzed BZ reaction is light-sensitive through photochemical inhibition of the catalyst.
Taken from refs [19,34,29,41,48,53] and used to explain why light stops oscillations.

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Cite this review

Pith. "Pith review of Liquid Marble Photosensor." pith.science (2026). https://pith.science/paper/R3AAGNLZ

@misc{pith2026190800632,
  author       = {Pith},
  title        = {Pith review of: Liquid Marble Photosensor},
  year         = {2026},
  howpublished = {\url{https://pith.science/paper/R3AAGNLZ}},
  note         = {Machine review of arXiv:1908.00632}
}

read the original abstract

A liquid marble is a liquid droplet coated by a hydrophobic power. The liquid marble does not wet adjacent surfaces and therefore can be manipulated as a dry soft body. A Belousov-Zhabotinsky (BZ) reaction is an oscillatory chemical reaction exhibiting waves of oxidation. We demonstrate how to make a photo-sensor from BZ medium liquid marbles. We insert electrodes into a liquid marble, prepared from BZ solution and coated with polyethylene powder. The electrodes record a potential difference which oscillates due to oxidation wave-fronts crossing the electrodes. When the BZ marble is illuminated by a light source, the oxidation wave-fronts are hindered and, thus, the electrical potential recorded ceases to oscillate. We characterise several types of responses of BZ marble photosensors to various stimuli, and provide explanations of the recorded activity. BZ liquid marble photosensors may find applications in the fields of liquid electronics, soft robotics and unconventional computing.

Figures

Figures reproduced from arXiv: 1908.00632 by the authors.

**Figure 2.** Typology of oscillations. (a) Average period of oscillations vs standard deviation [PITH_FULL_IMAGE:figures/full_fig_p004_2.png] view at source ↗

**Figure 3.** Modelling of low frequency oscillations of electrical potential in a BZ marble. (a– [PITH_FULL_IMAGE:figures/full_fig_p006_3.png] view at source ↗

Figures from the paper (5 more)

**Figure 4.** Figure 4: Experimentally recorded low frequency response of BZ marbles to a stimulation [PITH_FULL_IMAGE:figures/full_fig_p007_4.png]

**Figure 5.** Figure 5: Pattern of oscillation of the electrical potential recorded in a BZ marble depends [PITH_FULL_IMAGE:figures/full_fig_p008_5.png]

**Figure 6.** Figure 6: Modelling of bursting spiking of non-stimulated marble. There is a single [PITH_FULL_IMAGE:figures/full_fig_p009_6.png]

**Figure 7.** Figure 7: Migration of marbles in the Average period of oscillations versus standard [PITH_FULL_IMAGE:figures/full_fig_p009_7.png]

**Figure 8.** Figure 8: Examples of experimental marble response to stimulation in (a) Group A and [PITH_FULL_IMAGE:figures/full_fig_p010_8.png]

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Reference graph

Works this paper leans on

54 extracted references · 54 canonical work pages

[53]

Intelligent image sensor based on probing the evolution of redox potentials distributed in reaction–diﬀusion medium

Y Wang, Y Xie, C Yuan, H Wang, and D Fu. Intelligent image sensor based on probing the evolution of redox potentials distributed in reaction–diﬀusion medium. Sensors and Actuators B: Chemical, 145(1):285–292, 2010

work page 2010
[1]

Experimental implementation of mobile robot taxis with onboard Belousov– Zhabotinsky chemical medium

Andrew Adamatzky, Benjamin de Lacy Costello, Chris Melhuish, and Norman Rat- cliﬀe. Experimental implementation of mobile robot taxis with onboard Belousov– Zhabotinsky chemical medium. Materials Science and Engineering: C, 24(4):541– 548, 2004

work page 2004
[2]

Thermal switch of oscillation frequency in Belousov–Zhabotinsky liquid marbles

Andrew Adamatzky, Claire Fullarton, Neil Phillips, Ben De Lacy Costello, and Thomas C Draper. Thermal switch of oscillation frequency in Belousov–Zhabotinsky liquid marbles. Royal Society Open Science, 6(4):190078, 2019

work page 2019
[3]

Supplementary materials

Andrew Adamatzky, Antisthenis Tsompanas, Thomas Draper, and Richard Mayne. Supplementary materials. liquid marble photosensor. http://doi.org/10.5281/zenodo.3352607, 2019. 11

work page doi:10.5281/zenodo.3352607 2019
[4]

Liquid marbles

Pascale Aussillous and David Quéré. Liquid marbles. Nature, 411(6840):924–927, 2001

work page 2001
[5]

Liquid marbles: From industrial to medical ap- plications

Roxana-Elena Avrămescu, Mihaela-Violeta Ghica, Cristina Dinu-Pîrvu, Denisa Udeanu, and Lăcrămioara Popa. Liquid marbles: From industrial to medical ap- plications. Molecules, 23(5):1120, 2018

work page 2018
[6]

Pulse propagation in a model for the photosensi- tive Belousov-Zhabotinsky reaction with external noise

Valentina Beato and Harald Engel. Pulse propagation in a model for the photosensi- tive Belousov-Zhabotinsky reaction with external noise. InSPIE’s First International Symposium on Fluctuations and Noise, pages 353–362. International Society for Op- tics and Photonics, 2003

work page 2003
[7]

A periodic reaction and its mechanism.Compilation of Abstracts on Radiation Medicine, 147(145):1, 1959

Boris P Belousov. A periodic reaction and its mechanism.Compilation of Abstracts on Radiation Medicine, 147(145):1, 1959

work page 1959

Show all 54 references

[8]

Liquid marbles: properties and applications.Current Opinion in Colloid & Interface Science, 16(4):266–271, 2011

Edward Bormashenko. Liquid marbles: properties and applications.Current Opinion in Colloid & Interface Science, 16(4):266–271, 2011

2011
[9]

On the mechanism of ﬂoating and sliding of liquid marbles.ChemPhysChem, 10(4):654– 656, 2009

Edward Bormashenko, Yelena Bormashenko, Albina Musin, and Zahava Barkay. On the mechanism of ﬂoating and sliding of liquid marbles.ChemPhysChem, 10(4):654– 656, 2009

2009
[10]

Fully-digital oscillatory associative memories en- abled by non-volatile logic

Vehbi Calayir and Larry Pileggi. Fully-digital oscillatory associative memories en- abled by non-volatile logic. In Neural Networks (IJCNN), The 2013 International Joint Conference on, pages 1–6. IEEE, 2013

2013
[11]

Propulsion of liquid marbles: A tool to measure their eﬀective surface tension and viscosity.Journal of colloid and interface science, 532:32–36, 2018

F Celestini and Ed Bormashenko. Propulsion of liquid marbles: A tool to measure their eﬀective surface tension and viscosity.Journal of colloid and interface science, 532:32–36, 2018

2018
[12]

Liquid metals: fundamentals and applications in chemistry.Chemical Society Reviews, 47(11):4073–4111, 2018

T Daeneke, K Khoshmanesh, N Mahmood, IA de Castro, D Esraﬁlzadeh, SJ Barrow, MD Dickey, and K Kalantar-Zadeh. Liquid metals: fundamentals and applications in chemistry.Chemical Society Reviews, 47(11):4073–4111, 2018

2018
[13]

Draper, Claire Fullarton, Neil Phillips, Ben P

Thomas C. Draper, Claire Fullarton, Neil Phillips, Ben P. J. de Lacy Costello, and Andrew Adamatzky. Liquid Marble Actuator for Microﬂuidic Logic Systems.Sci. Rep., 8(1):14153, 2018

2018
[14]

Draper, Claire Fullarton, Neil Phillips, Ben P

Thomas C. Draper, Claire Fullarton, Neil Phillips, Ben P. J. de Lacy Costello, and Andrew Adamatzky. Mechanical Sequential Counting with Liquid Marbles. In Su- san Stepney and Sergey Verlan, editors,UCNC 2018, LNCS 10867, pages 59–71. Springer, 2018

2018
[15]

Draper, Claire Fullarton, Neil Phillips, Ben P.J

Thomas C. Draper, Claire Fullarton, Neil Phillips, Ben P.J. de Lacy Costello, and Andrew Adamatzky. Liquid marble interaction gate for collision-based computing. Mater. Today, 20(10):561–568, dec 2017

2017
[16]

Oscillations in chemical systems

Richard J Field and Richard M Noyes. Oscillations in chemical systems. iv. limit cycle behavior in a model of a real chemical reaction.The Journal of Chemical Physics, 60(5):1877–1884, 1974. 12

1974
[17]

Richard J Field and Arthur T. Winfree. Travelling waves of chemical activity in the Zaikin-Zhabotinskii-Winfree reagent. Journal of Chemical Education, 56(11):754, 1979

1979
[18]

Draper, Neil Phillips, Ben P J de Lacy Costello, and Andrew Adamatzky

Claire Fullarton, Thomas C. Draper, Neil Phillips, Ben P J de Lacy Costello, and Andrew Adamatzky. Belousov-Zhabotinsky reaction in liquid marbles. J. Phys. Mater., 2(1):015005, jan 2019

2019
[19]

The inﬂuence of visible light on the beloasoy-zhabotinskii oscillating reactions applying diﬀerent catalysts

V Gáşpár, Gy Bazsa, and MT Beck. The inﬂuence of visible light on the beloasoy-zhabotinskii oscillating reactions applying diﬀerent catalysts. Zeitschrift für Physikalische Chemie, 264(1):43–48, 1983

1983
[20]

chemical neuron

Pier Luigi Gentili, Viktor Horvath, Vladimir K Vanag, and Irving R Epstein. Belousov-Zhabotinsky “chemical neuron” as a binary and fuzzy logic processor.IJUC, 8(2):177–192, 2012

2012
[21]

Chemical memory with states coded in light controlled oscillations of interacting Belousov–Zhabotinsky droplets.Physical Chem- istry Chemical Physics, 19(9):6519–6531, 2017

Konrad Gizynski and Jerzy Gorecki. Chemical memory with states coded in light controlled oscillations of interacting Belousov–Zhabotinsky droplets.Physical Chem- istry Chemical Physics, 19(9):6519–6531, 2017

2017
[22]

T-shaped coincidence detector as a band ﬁlter of chemical signal frequency.Physical Review E, 67(6):067203, 2003

J Gorecka and J Gorecki. T-shaped coincidence detector as a band ﬁlter of chemical signal frequency.Physical Review E, 67(6):067203, 2003

2003
[23]

Chemical computing with reaction–diﬀusion processes.Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sci- ences, 373(2046):20140219, 2015

J Gorecki, K Gizynski, J Guzowski, JN Gorecka, P Garstecki, G Gruenert, and P Dittrich. Chemical computing with reaction–diﬀusion processes.Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sci- ences, 373(2046):20140219, 2015

2015
[24]

Information coding with fre- quency of oscillations in Belousov-Zhabotinsky encapsulated disks.Physical Review E, 89(4):042910, 2014

J Gorecki, JN Gorecka, and Andrew Adamatzky. Information coding with fre- quency of oscillations in Belousov-Zhabotinsky encapsulated disks.Physical Review E, 89(4):042910, 2014

2014
[25]

On chemical reactors that can count.The Journal of Physical Chemistry A, 107(10):1664–1669, 2003

J Gorecki, K Yoshikawa, and Y Igarashi. On chemical reactors that can count.The Journal of Physical Chemistry A, 107(10):1664–1669, 2003

2003
[26]

Information processing with chemical excitations–from instant machines to an artiﬁcial chemical brain.International Jour- nal of Unconventional Computing, 2(4), 2006

Jerzy Gorecki and Joanna Natalia Gorecka. Information processing with chemical excitations–from instant machines to an artiﬁcial chemical brain.International Jour- nal of Unconventional Computing, 2(4), 2006

2006
[27]

Understanding networks of computing chemical droplet neurons based on information ﬂow.International journal of neural systems, 25(07):1450032, 2015

Gerd Gruenert, Konrad Gizynski, Gabi Escuela, Bashar Ibrahim, Jerzy Gorecki, and Peter Dittrich. Understanding networks of computing chemical droplet neurons based on information ﬂow.International journal of neural systems, 25(07):1450032, 2015

2015
[28]

Multi-scale mod- elling of computers made from excitable chemical droplets.IJUC, 9(3-4):237–266, 2013

GerdGruenert, JanSzymanski, JulianHolley, GabiEscuela, AlexandraDiem, Bashar Ibrahim, Andrew Adamatzky, Jerzy Gorecki, and Peter Dittrich. Multi-scale mod- elling of computers made from excitable chemical droplets.IJUC, 9(3-4):237–266, 2013

2013
[29]

Photo-response of chemical oscilla- tors

I Hanazaki, Y Mori, T Sekiguchi, and Gy Rábai. Photo-response of chemical oscilla- tors. Physica D: Nonlinear Phenomena, 84(1-2):228–237, 1995. 13

1995
[30]

Towards heterotic computing with droplets in a fully automated droplet-maker platform

Alon Henson, Juan Manuel Parrilla Gutierrez, Trevor Hinkley, Soichiro Tsuda, and Leroy Cronin. Towards heterotic computing with droplets in a fully automated droplet-maker platform. Philosophical Transactions of the Royal Society A: Mathe- matical, Physical and Engineering Sci...

2015
[31]

Chemical diodes built with controlled excitable media

Yasuhiro Igarashi and Jerzy Gorecki. Chemical diodes built with controlled excitable media. IJUC, 7(3):141–158, 2011

2011
[32]

A reaction–diﬀusion memory device.Angewandte Chemie International Edition, 45(19):3087–3089, 2006

Akiko Kaminaga, Vladimir K Vanag, and Irving R Epstein. A reaction–diﬀusion memory device.Angewandte Chemie International Edition, 45(19):3087–3089, 2006

2006
[33]

A new optical photochemical memory device in a light-sensitive chemical active medium

L Kuhnert. A new optical photochemical memory device in a light-sensitive chemical active medium. Nature, 319(6052):393, 1986

1986
[34]

Kuhnert, K

L. Kuhnert, K. I. Agladze, and V. I. Krinsky. Image processing using light-sensitive chemical waves.Nature, 337(6204):244–247, jan 1989

1989
[35]

Liquid marbles: principles and applications

Glen McHale and Michael I Newton. Liquid marbles: principles and applications. Soft Matter, 7(12):5473–5481, 2011

2011
[36]

Manipulation of liquid marbles.Microﬂu- idics and Nanoﬂuidics, 19(3):483–495, 2015

Chin Hong Ooi and Nam-Trung Nguyen. Manipulation of liquid marbles.Microﬂu- idics and Nanoﬂuidics, 19(3):483–495, 2015

2015
[37]

Computing with membranes: An introduction

Gheorghe Păun. Computing with membranes: An introduction. Bulletin of the EATCS, 67:139–152, 1999

1999
[38]

Computing with membranes (P systems): A variant.Int

Gheorghe Păun. Computing with membranes (P systems): A variant.Int. J. Found. Comput. Sci., 11(1):167–181, 2000

2000
[39]

Membrane computing

Gheorghe Păun. Membrane computing. InEncyclopedia of Complexity and Systems Science, pages 5523–5535. Springer, 2009

2009
[40]

A guide to membrane computing.Theo- retical Computer Science, 287(1):73–100, 2002

Gheorghe Păun and Grzegorz Rozenberg. A guide to membrane computing.Theo- retical Computer Science, 287(1):73–100, 2002

2002
[41]

Information-processing capabilities of chemical reaction–diﬀusion systems

NG Rambidi, TO-O Kuular, and EE Makhaeva. Information-processing capabilities of chemical reaction–diﬀusion systems. 1. Belousov–Zhabotinsky media in hydro- gel matrices and on solid supports.Advanced Materials for Optics and Electronics, 8(4):163–171, 1998

1998
[42]

chemical signal

Jakub Sielewiesiuk and Jerzy Górecki. Passive barrier as a transformer of “chemical signal” frequency.The Journal of Physical Chemistry A, 106(16):4068–4076, 2002

2002
[43]

Chemical wave logic gates

Oliver Steinbock, Petteri Kettunen, and Kenneth Showalter. Chemical wave logic gates. The Journal of Physical Chemistry, 100(49):18970–18975, 1996

1996
[44]

Time-dependent wave selection for information processing in excitable media.Phys- ical Review E, 85(6):066129, 2012

William M Stevens, Andrew Adamatzky, Ishrat Jahan, and Ben de Lacy Costello. Time-dependent wave selection for information processing in excitable media.Phys- ical Review E, 85(6):066129, 2012

2012
[45]

Associative memory in reaction-diﬀusion chem- istry

James Stovold and Simon O’Keefe. Associative memory in reaction-diﬀusion chem- istry. InAdvances in Unconventional Computing, pages 141–166. Springer, 2017. 14

2017
[46]

Crossover structures for logical computations in excitable chemical medium

Ming-Zhu Sun and Xin Zhao. Crossover structures for logical computations in excitable chemical medium. International Journal Unconventional Computing , 11(2):165–184, 2015

2015
[47]

Chemo-mechanical coupling in reactive droplets

Jan Szymanski, Jerzy Gorecki, and Marcus JB Hauser. Chemo-mechanical coupling in reactive droplets. The Journal of Physical Chemistry C, 117(25):13080–13086, 2013

2013
[48]

Wave initiation in the ferroin-catalysed belousov–zhabotinsky reaction with visible light.Physical Chemistry Chemical Physics, 2(3):413–416, 2000

Rita Tóth, Vilmos Gáspár, Andrew Belmonte, Megan C O’Connell, Annette Taylor, and Stephen K Scott. Wave initiation in the ferroin-catalysed belousov–zhabotinsky reaction with visible light.Physical Chemistry Chemical Physics, 2(3):413–416, 2000

2000
[49]

Belousov- zhabotinsky liquid marbles in robot control

Michail-AntisthenisTsompanas, ClaireFullarton, andAndrewAdamatzky. Belousov- zhabotinsky liquid marbles in robot control. Sensors and Actuators B: Chemical, 295:194–203, 2019

2019
[50]

Waves and patterns in reaction–diﬀusion systems

Vladimir K Vanag. Waves and patterns in reaction–diﬀusion systems. Belousov– Zhabotinsky reaction in water-in-oil microemulsions. Physics-Uspekhi, 47(9):923, 2004

2004
[51]

Pattern formation in a tunable medium: The belousov-zhabotinsky reaction in an aerosol ot microemulsion.Physical review letters, 87(22):228301, 2001

Vladimir K Vanag and Irving R Epstein. Pattern formation in a tunable medium: The belousov-zhabotinsky reaction in an aerosol ot microemulsion.Physical review letters, 87(22):228301, 2001

2001
[52]

Con- ﬁgurable nor gate arrays from belousov-zhabotinsky micro-droplets.The European Physical Journal Special Topics, 225(1):211–227, 2016

AL Wang, JM Gold, N Tompkins, M Heymann, KI Harrington, and S Fraden. Con- ﬁgurable nor gate arrays from belousov-zhabotinsky micro-droplets.The European Physical Journal Special Topics, 225(1):211–227, 2016

2016
[54]

Periodic processes of malonic acid oxidation in a liquid phase

AM Zhabotinsky. Periodic processes of malonic acid oxidation in a liquid phase. Bioﬁzika, 9(306-311):11, 1964. 15

1964

Pith tools

Reviewed August 14, 2026 · model on record in the stance chip above.

[1] [53]

Intelligent image sensor based on probing the evolution of redox potentials distributed in reaction–diﬀusion medium

Y Wang, Y Xie, C Yuan, H Wang, and D Fu. Intelligent image sensor based on probing the evolution of redox potentials distributed in reaction–diﬀusion medium. Sensors and Actuators B: Chemical, 145(1):285–292, 2010

work page 2010

[2] [1]

Experimental implementation of mobile robot taxis with onboard Belousov– Zhabotinsky chemical medium

Andrew Adamatzky, Benjamin de Lacy Costello, Chris Melhuish, and Norman Rat- cliﬀe. Experimental implementation of mobile robot taxis with onboard Belousov– Zhabotinsky chemical medium. Materials Science and Engineering: C, 24(4):541– 548, 2004

work page 2004

[3] [2]

Thermal switch of oscillation frequency in Belousov–Zhabotinsky liquid marbles

Andrew Adamatzky, Claire Fullarton, Neil Phillips, Ben De Lacy Costello, and Thomas C Draper. Thermal switch of oscillation frequency in Belousov–Zhabotinsky liquid marbles. Royal Society Open Science, 6(4):190078, 2019

work page 2019

[4] [3]

Supplementary materials

Andrew Adamatzky, Antisthenis Tsompanas, Thomas Draper, and Richard Mayne. Supplementary materials. liquid marble photosensor. http://doi.org/10.5281/zenodo.3352607, 2019. 11

work page doi:10.5281/zenodo.3352607 2019

[5] [4]

Liquid marbles

Pascale Aussillous and David Quéré. Liquid marbles. Nature, 411(6840):924–927, 2001

work page 2001

[6] [5]

Liquid marbles: From industrial to medical ap- plications

Roxana-Elena Avrămescu, Mihaela-Violeta Ghica, Cristina Dinu-Pîrvu, Denisa Udeanu, and Lăcrămioara Popa. Liquid marbles: From industrial to medical ap- plications. Molecules, 23(5):1120, 2018

work page 2018

[7] [6]

Pulse propagation in a model for the photosensi- tive Belousov-Zhabotinsky reaction with external noise

Valentina Beato and Harald Engel. Pulse propagation in a model for the photosensi- tive Belousov-Zhabotinsky reaction with external noise. InSPIE’s First International Symposium on Fluctuations and Noise, pages 353–362. International Society for Op- tics and Photonics, 2003

work page 2003

[8] [7]

A periodic reaction and its mechanism.Compilation of Abstracts on Radiation Medicine, 147(145):1, 1959

Boris P Belousov. A periodic reaction and its mechanism.Compilation of Abstracts on Radiation Medicine, 147(145):1, 1959

work page 1959