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Czech Post certified digital mail code: sp4j9ch

Copyright: UCT Prague 2017
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Welcome to Droplet Laboratory website!

The Droplet Laboratory was established by Jitka Čejková in 2017 as part of the Chemical Robotics Laboratory at Chemical Engineering Department (University of Chemistry and Technology Prague). Our research is focused on droplets, namely on life-like decanol droplets behavior and liquid marbles. Find out more about our research interests.

Want to join us?

We are always looking for motivated students at all levels – from 1st year undergraduate to PhD’s – to join our lab! Interested candidates, please apply directly to Jitka Čejková.

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Funding:

Czech Science Foundation

Project Registration No.

17-21696Y

Abstract:

Pattern formation in far from equilibrium systems is observed in several disciplines including biology and reaction-diffusion chemistry, comprising both living and non-living systems. We aim to study such non-equilibrium dynamics of a novel system based on a 1-decanol droplet placed in a solution of alkaline decanoate. Recently, we have found that when the system is open to the environment and the evaporation of water from decanoate solution occurs we observe dramatic morphological changes of the decanol droplet. Moreover in the presence of sodium chloride it shows a novel type of pattern formation, namely the formation of long tentacular structures that we aim to analyse within present project at both the macroscopic and microscopic scale across a large range of initial conditions.  Such reproducible morphological changes in simple droplets open a path for exploration of shape-based effects in larger scale pattern formation studies.

Start date:

2017-01-01

End date:

2019-12-31

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Head of the Droplet Laboratory

cejkova (ořez 215*215px)

Doc. Ing. Jitka Čejková, Ph.D.

Students 

 ◳ laura (png) → (ořez 215*215px)

Laura Bábanová

  • Master student

 ◳ nina (png) → (ořez 215*215px)

Nina Nováková

  • Master student
  • Bachelor thesis (2022): Experimental study of the myelin figures growth

 ◳ eliska (png) → (ořez 215*215px)

Eliška Paulíková

  • Master student
  • Bachelor thesis (2023): Study of translational and rotational motions of self-propelled chemical objects

 ◳ simona (png) → (ořez 215*215px)

Simona Staňová

  • Bachelor student
 ◳ vaculik (png) → (ořez 215*215px)

Jakub Vaculík

  • Master student
  • Bachelor thesis (2019): Experimental study of the effect of system composition on artificial chemotaxis of droplets

Alumni

 andoni (ořez 215*215px)

Andoni Aguirre

  • IAESTE student (Fall 2017)

 ◳ augustionova (png) → (ořez 215*215px)

Adriana Augustínová

  • Bachelor thesis (2023): The controlled growth of chemical gardens from mixed liquid and solid seeds

 ◳ blahusek (png) → (ořez 215*215px)

Vojtěch Blahušek

  • Bachelor thesis (2022): Experimental study of mechanical properties of liquid marbles
linda (ořez 215*215px)

Linda Bondorf

  • IAESTE student (Fall 2018)
baris (ořez 215*215px)

Barış Çınar

  • Erasmus student (Winter 2018)
 ◳ cioban (png) → (ořez 215*215px)

Ecaterina Laura Cioban

  • Erasmus student (Summer 2022)
 ◳ aygun (png) → (ořez 215*215px)

Aygun Gasimova

  • Erasmus student (Summer 2023)
  ◳ icon (gif) → (ořez 215*215px)

Radek Chmelař

  • Bachelor thesis (2019): Use of artificial neural networks for description of behaviour of system of decanol droplets in decanoate solution
megan (ořez 215*215px)

Megan Jack

  • Erasmus student (Spring 2019)
  ◳ janska (png) → (ořez 215*215px)

Petra Janská

  • Diploma thesis (2017): Synthesis and characterization of oil liquid marbles
  • Bachelor thesis (2014): Investigation of biologically triggered break-up of microparticles
  ◳ icon (gif) → (ořez 215*215px)

Ilgın Karakoç

  • Master student (2018)
 ◳ keller (png) → (ořez 215*215px)

Fillip Keller

  •  Bachelor thesis (2021): Self-Rotation of Decanol Droplets
maku2 (ořez 215*215px)

Markéta Kubiková

  • Master thesis (2021): Microparticles with super-hydrophobic cores for bioapplications
 ◳ mathis (png) → (ořez 215*215px)

Mathis Leemann

  • IAESTE student (Fall 2021)
 ◳ loustas (png) → (ořez 215*215px)

George Loustas

  • IAESTE student (Fall 2022)
 nikola (ořez 215*215px)

To Quyen Nguyenová 

  • Bachelor thesis (2015): Nebiologická chemotaxe - charakterizace systému dekanol-dekanoát-sůl

 ◳ theresa (png) → (ořez 215*215px)

Theresa Noske

  • IAESTE student (Fall 2023)
matej (ořez 215*215px)

Matěj Novák

  • Bachelor thesis (2014): Investigation of non-biological chemotaxis
 ◳ ioannis (jpg) → (ořez 215*215px)

Ioannis Pantazos

  • IAESTE student (Fall 2021)
 ondra (ořez 215*215px)

Ondřej Rychecký

  • Master thesis (2016): Cultivation of Spheroids in Liquid Marbles
adam (ořez 215*215px)

Adam Sikorják

  • Highschool student (Fall 2018)
 sara (ořez 215*215px)

Sara Patricia Ferreira Da Silva

  • Erasmus student (Fall 2016)
jana (ořez 215*215px)

Jana Steinhauserová

  • Master student (2019)
dominik (ořez 215*215px)

Dominik Švára

  • Master thesis (2018): Experimental study of decanol droplets pattern formation in electric field
  • Bachelor thesis (2016): Experimental study of decanol droplets pattern formation
 ◳ dorota (png) → (ořez 215*215px)

Dorota Marie Walecka

  • IAESTE student (Summer 2023)

Collaborators

 taisuke (ořez 215*215px)

Taisuke Banno

  • Department of Applied Chemistry, Keio University, Yokohama, Japan
martin (ořez 215*215px)

Martin M. Hanczyc

  • Laboratory for Artificial Biology, Centre for Integrative Biology (CIBIO), University of Trento, Trento, Italy
 takashi (ořez 215*215px)

Takashi Ikegami

  • Department of General Systems Studies, University of Tokyo, Japan
  ◳ icon (gif) → (ořez 215*215px)

Karin Schwarzenberger

  • TU Dresden
 kasper (ořez 215*215px)

Kasper Stoy

  • ITU Copenhagen, Denmark
ferry (ořez 215*215px)

František Štěpánek

  • Head of the Chemical Robotics Laboratory
  • UCT Prague
 shinpei (ořez 215*215px)

Shinpei Tanaka

  • Graduate School of Integrated Arts and Sciences, Hiroshima University, Japan

*alphabetical order in all lists

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ROBOT100.cz

ROBOT 100

On the occasion of 100th anniversary of the word "robot", I published the book ROBOT 100 and organized a conference on artificial life ALIFE 2021 in Prague

cbrio (šířka 450px)

Chemobrionics

COST Action where we are involved in

chemaliforms (šířka 215px)

CHEMALIFORMS

Workshop at ALIFE 2019 Newcastle (UK) 29 Jul 2019 organized by Jitka Čejková, Richard Löffler and Geoff Cooper

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Publications

Book Chapters

Proceedings

(selected from over 40 papers)

  • Čejková J., Robots: The century past and the century ahead, an Introduction to the 2021 ALIFE conference, Artificial Life Conference Proceedings, MIT Press, 2021.
  • Čejková J., Ikegami T., Experimental study of mutual interactions of multiple liquid droplets, Proceedings of the 2nd International Symposium on Swarm Behavior and Bio-Inspired Robotics, Kyoto (Japan), 31. 10. -1. 11. 2017, pp. 274-278 (2017).
  • Čejková J., Ikegami T., Štěpánek F., Life-like swarm behavior of multiple chemotactic droplets, Proceedings of the European Conference on Artificial Life 2017, Lyon (France), 4. – 9. 9. 2017, MIT Press, pp. 91-95 (2017).
  • Čejková J., Haufová P., Gorný D., Štěpánek F.: “Artificial spores” – hybrid alginate microcapsules with encapsulated yeast cells, Proceedings of the Twelfth European Conference on the Synthesis and Simulation of Living Systems, Taormina (Italy), 2. -6. 9. 2013, MIT Press, pp. 818-823 (2013).
  • Čejková J., Štěpánek F.: Chobotix 2012: book of proceedings, Institute of Chemical Technology Prague, 2012, ISBN 978-80-7080-813-9 (editor).
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DATA


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Funding:

Czech Science Foundation

Project Registration No.

17-21696Y

Abstract:

Pattern formation in far from equilibrium systems is observed in several disciplines including biology and reaction-diffusion chemistry, comprising both living and non-living systems. We aim to study such non-equilibrium dynamics of a novel system based on a 1-decanol droplet placed in a solution of alkaline decanoate. Recently, we have found that when the system is open to the environment and the evaporation of water from decanoate solution occurs we observe dramatic morphological changes of the decanol droplet. Moreover in the presence of sodium chloride it shows a novel type of pattern formation, namely the formation of long tentacular structures that we aim to analyse within present project at both the macroscopic and microscopic scale across a large range of initial conditions.  Such reproducible morphological changes in simple droplets open a path for exploration of shape-based effects in larger scale pattern formation studies.

Start date:

2017-01-01

End date:

2019-12-31

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cejkova (ořez 215*215px)

Ing. Jitka Čejková, Ph.D.

  • principal investigator

honetschlagerova (ořez 215*215px)

Ing. Lenka Honetschlägerová, Ph.D.

  • Task 1. Parametric studies and explanation of pattern formation
honza (ořez 215*215px)

Ing. Jan Tomas

  • Task 2. Investigation of evaporation processes during the pattern formation of decanol droplets
heyda-photo (ořez 215*215px)

RNDr. Jan Heyda, Ph.D.

  • Task 3
vadym (ořez 215*215px)

Ing. Vadym Prokopec, Ph.D.

  • Task 4. Study of microscopic structures by vibrational spectroscopic techniques
lucia b (ořez 215*215px)

Bc. Lucia Becherová

  • Task 4. Study of microscopic structures by vibrational spectroscopic techniques

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The aims of this project are:

  1. To perform parametric studies and find how the pattern formation depends on parameters such as decanoate concentrations, pH of decanoate solution, presence of various kinds of salts
  2. To study the effect of speed of evaporation on the pattern formation of decanol droplets placed in decanoate solution (with and without salt).
  3. To study the effect of applied electrical field on the growth of tentacular structures.
  4. To study myelin figures formation by using Raman spectroscopy.
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Here only papers where Czech Science Foundation (Grant No. 17-21696Y) is acknowledged are listed (see also full list of publications of Jitka Čejková).

Papers

Book chapters

Proceedings

  • Vaculík J., Čejková J., "Experimental study of the effect of system composition on artificial chemotaxis of droplets", Artificial Life Conference Proceedings 2020 NO. 32, 768-770 (MIT Press).  
  • Čejková J., "How chemical engineers contribute to artificial life research", Proceedings of 46th Conference of Slovak Society of Chemical Engineering (SSCHE 2019).
  • Jack M., Čejková J., "Investigation into how the concentration of sodium decanoate impacts the chemotactic behaviour of decanol droplets", Proceedings of 46th Conference of Slovak Society of Chemical Engineering (SSCHE 2019).
  • Becherová L., Prokopec V., Honetschlägerová L., Čejková J., "Determination of Critical Micelle Concentration of Sodium Decanoate by Raman Spectroscopy", Proceedings of 46th Conference of Slovak Society of Chemical Engineering (SSCHE 2019).
  • Švára D., Pocedič J., Čejková J., "Investigation of decanol droplets behaviour in electric field", Proceedings of 44th Conference of Slovak Society of Chemical Engineering (SSCHE 2017).
  • Čejková J., Ikegami T., Štěpánek F., "Life-like swarm behavior of multiple chemotactic droplets ", Proceedings of the European Conference on Artificial Life 2017 (ECAL 2017).
  • Čejková J., Ikegami T., "Experimental study of mutual interactions of multiple liquid droplets", Proceedings of the 2nd International Symposium on Swarm Behavior and Bio-Inspired Robotics (SWARM 2017).

Conference presentations

  • Čejková J. (2019) Bio-inspired Liquid Robots Mimicking the Cell Behaviour , SWARM 2019: The 3rd International Symposium on Swarm Behavior and Bio-Inspired Robotics, Okinawa - Japan, 20.-22.11.2019.
  • Čejková J. (2019) Liquid robots, Okinawa Colloids 2019, Okinawa - Japan, 3.-8..11.2019.
  • Čejková J. (2019) How chemical engineers contribute to artificial life research, 46th Conference of Slovak Society of Chemical Engineering 2019, Tatranské Matliare - Slovakia, 20.-23.5.2019.
  • Čejková J. (2019) Pattern forming droplet systems, COST Action Chemobrionics 30/80 meeting  2019, Granada - Spain, 11.-13.3.2019.
  • Čejková J., Schwarzenberger K., Tanaka S. (2018) Dancing performance of multiple organic droplets in aqueous solutions, 32nd Conference of the European Colloid and Interface Society - ECIS2018, Ljubljana - Slovenia, 2.-7.9.2018.
  • Čejková J., Schwarzenberger K. (2018) Investigation of decanol droplets interactions, 45th Conference of Slovak Society of Chemical Engineering 2018, Tatranské Matliare - Slovakia, 21.-25.5.2018.
  • Čejková J. (2018) Droplets as Liquid Robots, 2nd Week of Complexity Sciences at Center for Complexity Sciences of National Autonomous University of Mexico, Mexico City - Mexico, 31.1.-2.2.2018.
  • Čejková J., Ikegami T. (2017) Experimental study of mutual interactions of multiple liquid droplets, SWARM 2017: The 2nd International Symposium on Swarm Behavior and Bio-Inspired Robotics, Kyoto - Japan, 31.10.-1.11.2017.
  • Čejková J. (2017) Dekanolové kapky jako živé, 64. Konference chemického a procesního inženýrství CHISA 2017, Seč u Chrudimi, 23.-26.10.2017.
  • Čejková J., Ikegami T., Štěpánek F. (2017) Life-like swarm behavior of multiple chemotactic droplets 14th European Conference on Artificial Life 2017, Lyon - France, 4.-9.9.2017.
  • Čejková J. (2017) Life-like behaviour of decanol droplets: movement, shape changes and mutual interactions, EON Workshop: Sensors, Motors and Behaviour at the Origin of Life, Tokyo - Japan, 26.-28.7.2017.
  • Čejková J., Novák M., Hanczyc M. M., Ikegami T., Štěpánek F. (2017) Artificial chemotaxis of decanol droplet groups, XXXVII Dynamics Days Europe International Conference, Szeged - Hungary, 5.-9.6.2017.

Posters

  • Honetschlägerová L., Heyda J., Tomas J., Čejková J. (2019) Pattern formation of decanol droplets, Okinawa Colloids 2019, Okinawa - Japan, 3.-8.11.2019.
  • Kubiková M., Bondorf L., Čejková J. (2019) Rotující dekanolové kapky jako součástky tekutých robotů, 66. Konference chemického a procesního inženýrství CHISA 2019, Seč u Chrudimi, 21.-24.10.2019.
  • Tomas J., Honetschlägerová L., Heyda J., Čejková J. (2019) Tvorba obrazců v systému dekanol-dekanoát , 66. Konference chemického a procesního inženýrství CHISA 2019, Seč u Chrudimi, 21.-24.10.2019.
  • Bondorf L., Kubiková M., Čejková J. (2019) Self-propelled rotating decanol droplets, ALIFE 2019, Newcastle upon Tyne - UK, 29.7.-2.8.2019.
  • Becherová L., Prokopec V., Honetschlägerová L., Čejková J. (2019) Determination of Critical Micelle Concentration of Sodium Decanoate by Raman Spectroscopy, 46th Conference of Slovak Society of Chemical Engineering 2019, Tatranské Matliare - Slovakia, 20.-23.5.2019.
  • Jack M., Čejková J. (2019) Investigation into how the concentration of sodium decanoate impacts the chemotactic behaviour of decanol droplets , 46th Conference of Slovak Society of Chemical Engineering 2019, Tatranské Matliare - Slovakia, 20.-23.5.2019.
  • Prokopec V., Becherová L., Čejková J. (2018) Use of Vibrational Spectroscopic Techniques for the Understanding of Evaporation Induced Pattern Formation of Decanol Droplets, XXXIV European Congress on Molecular Spectroscopy - EUCMOS 2018, Coimbra – Portugal, 19.-24.8.2018
  • Čejková J., Ikegami T., Štěpánek F. (2018) Swarming droplets: Spatiotemporal arrangement of multiple interacting agents, ALIFE 2018, Tokyo - Japan, 23.-27.7.2018.
  • Honetschlägerová L., Čejková J. (2018) Dynamics of a Decanol Droplet over a Sessile Aqueous Droplet, 45th Conference of Slovak Society of Chemical Engineering 2018, Tatranské Matliare - Slovakia, 21.-25.5.2018.
  • Švára D., Pocedič J., Čejková J. (2017) Vliv elektrického pole na tvorbu obrazců v systému dekanol-dekanoát, 64. Konference chemického a procesního inženýrství CHISA 2017, Seč u Chrudimi, 23.-26.10.2017.
  • Novák M., Aguire A., Čejková J. (2017) Fyzikální analýza a simulace chemotaktického systému dekanol-dekanoát, 64. Konference chemického a procesního inženýrství CHISA 2017, Seč u Chrudimi, 23.-26.10.2017.
  • Čejková J., Honetschlägerová L., Novák M., Pocedič J., Prokopec V., Švára D., Valenz L. (2017) Towards the understanding of evaporation induced pattern formation of decanol droplets, XXXVII Dynamics Days Europe International Conference, Szeged - Hungary, 5.-9.6.2017.
  • Švára D., Pocedič J., Čejková J. (2017) Investigation of decanol droplets behaviour in electric field, Proceedings of 44th Conference of Slovak Society of Chemical Engineering, Tatranské Matliare - Slovakia, 22.-26.5.2017.

Invited talks

  • Čejková J., "Liquid robots are not cells", University of Southern Denmark, Odense, Denmark (23.1.2020)
  • Čejková J., "Liquid robotics", Hiroshima University, Japan (15. 11. 2019)
  • Čejková J., "Artificial life in chemical systems: droplets as liquid robots", Physical chemistry seminar, Lund University, Sweden (18. 3. 2019)
  • Čejková J., "Droplets as Liquid Robots", keynote speaker at Week of Complexity Sciences at Center for Complexity Sciences of National Autonomous University of Mexico, Mexico City (31. 1. -2. 2018)
  • Čejková J., "Droplets as Liquid Robots", Institute of Physical Chemistry, Polish Academy of Scinece, Warsaw (24.11.2017)
  • Čejková J., "Experimental study of decanol droplets life-like behaviour“, Department of Physical and Macromolecular chemistry, Charles University (11.10.2017)
  • Čejková J., "Pattern formation of decanol droplets ", Keio University, Japan (31.7.207)
  • Čejková J., "Experimental study of decanol droplets life-like behaviour“, Hiroshima University , Japan (11.7.2017)

Workshop organization

Others

  • Čejková J., "Droplets as liquid robots". AFO - 52. Mezinárodní festival populárně-vědeckých filmů, Olomouc (25.-30.4.2017)
  • Čejková J., "Kapky jako tekutí roboti". Noc vědců, VŠCHT Praha (6.10.2017)
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