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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 

Fillip Keller

  •  Bachelor student

maku2 (ořez 215*215px)

Markéta Kubiková

  • Master student
kuba (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 (autumn 2017)
linda (ořez 215*215px)

Linda Bondorf

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

Barış Çınar

  • Erasmus student (winter 2018)
 

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)
 petra (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
 

Ilgın Karakoç

  • Master student (2018)
 nikola (ořez 215*215px)

To Quyen Nguyenová 

  • Bachelor thesis (2015): Nebiologická chemotaxe - charakterizace systému dekanol-dekanoát-sůl
matej (ořez 215*215px)

Matěj Novák

  • Bachelor thesis (2014): Investigation of non-biological chemotaxis
 ondra (ořez 215*215px)

Ondřej Rychecký

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

Adam Sikorják

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

Sara Patricia Ferreira Da Silva

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

Jana Steinhauserová

  • Master student
dominik (ořez 215*215px)

Bc. 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

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
 

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 publish the book ROBOT 100 and organize 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

  1. Becherová L., Prokopec V., Čejková J. (2020). Vibrational spectroscopic analysis of critical micelle concentration in sodium decanoate solutions, Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy (in press).
  2. Cardoso S. S. S., Cartwright J. H. E., Čejková J., Cronin L., Wit A. D., Giannerini S., Horváth D., Rodrigues A., Russell M. J., Sainz-Díaz C. I., Tóth Á. (2020), Chemobrionics: From Self-assembled Material Architectures to the Origin of Life. Artificial Life, 1-12, in press.
  3. Janská P., Rychecký O., Zadražil A., Štěpánek F., Čejková J. (2019), Liquid oil marbles: increasing the bio-availability of poorly water-soluble drugs, Journal of Pharmaceutical Sciences, 108(6), 2136-2142.
  4. Čejková J., Schwarzenberger K., Eckert K., Tanaka S. (2019), Dancing performance of organic droplets in aqueous surfactant solutions. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 566, 141-147.
  5. Čejková J., Hanczyc M.M., Štěpánek F. (2018), Multi-Armed Droplets as Shape-Changing Protocells, Artificial Life, 24 (1), 71-79.
  6. Čejková J., Banno T., Štěpánek F., Hanczyc M.M. (2017), Droplets as Liquid Robots, Artificial Life, 23 (4), 528-549 (open access).
  7. Čejková J., Rychecký O. (2017), Tekuté kuličky, Chemické listy 111, 109-114.
  8. Rychecký O., Majerská M., Král V., Štěpánek F., Čejková J. (2017), Spheroid cultivation of HT-29 carcinoma cell line in liquid marbles, Chemical Papers 71(6), 1055–1063.
  9. Čejková J., Štěpánek F., Hanczyc M. (2016), Evaporation-induced pattern formation of decanol droplets, Langmuir 32, 4800-4805.
  10. Čejková J., Novák M., Štěpánek F., Hanczyc M. (2014), Dynamics of chemotactic droplets in salt concentration gradients, Langmuir ,30(40), 11937–11944.
  11. Čejková J., Haufová P., Gorný D., Hanuš J., Štěpánek F. (2013), Biologically triggered liberation of sub-micron particles from alginate microcapsules, Journal of Materials Chemistry B 1, 5456-5461.
  12. Čejková J. (2013), Dictyostelium discoideum – model system not only for biologists, Chemické listy 107, 563-600.
  13. Čejková J., Štěpánek F. (2013), Compartmentalized and internally structured particles for drug delivery, Current Pharmaceutical Design 19(35), 6298-6314.
  14. Prokopec V., Kokaislová A., Čejková J., Dendisová M., Člupek M., Matějka P. (2011), Spectroscopic study of SERS- and SEIRA- activity of copper large-scaled surface substrates prepared by electrochemical deposition: what is the role of oxidation-reduction cycle treatment?, Journal of Molecular Structure 993, 410-419.
  15. Čejková J., Hanuš J., Štěpánek F. (2010), Investigation of internal microstructure and thermo-responsive properties of composite PNIPAM/silica microcapsules. Journal of Colloid and Interface Science 346, 352-360.
  16. Ševčíková H., Čejková J., Krausová L., Přibyl M., Štěpánek F., Marek M. (2010) A new traveling wave pattern of Dictyostelium in the presence of cAMP in the agar. Physica D 239, 879-888.
  17. Čejková J., Prokopec V., Brázdová S., Kokaislová A., Matějka P., Štěpánek F. (2009), Characterization of copper SERS-active substrates prepared by electrochemical deposition. Applied Surface Science 255, 7864-7870.
  18. Kokaislová A., Brázdová S., Prokopec V., Člupek M., Čejková J., Matějka P. (2009), Příprava SERS-aktivních měděných substrátů katodickou redukcí a vyhodnocení jejich struktury pomocí mikroskopie atomárních sil. Chemické listy 103, 246-250.
  19. Hilgardt C., Čejková J., Hauser M. J. B., Ševčíková H. (2008), Streamless aggregation of Dictyostelium in the presence of isopropylidenadenosin. Biophysical Chemistry 132, 9-17.
  20. Prokopec V., Čejková J., Matějka P., Hasal P. (2008), Preparation of SERS-active substrates with large surface area for Raman spectral mapping and testing of their surface nanostructure. Surface and Interface Analysis 40, 601-607.

Book Chapters

Proceedings

(selected from over 40 papers)

  • 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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twitter (šířka 215px)     LinkedIn_logo_initials (ořez 215*215px)     YouTube_logo        scholar_logo_64dp (šířka 215px)
Address:
University of Chemistry and Technology Prague
Technická 3 (building B, room BS62)
166 28 Prague 6
Czechia

Work Experience

Education

International Experience

Achievements

  • Participation in the Czech final of the L'Oréal-UNESCO For Women in Science programme, 2020
  • 2018 ISAL Award for Outstanding Paper of 2017 in the field of Artificial Life
  • Crytur Award 2017, 1st place, for supervision of the best diploma thesis (student Petra Janská)
  • 2017 Canon Foundation Research Fellowship
  • Best Poster Award, ALIFE 2016 (4.-8.7.2016, Cancún, México)
  • Crytur Award 2016, 2nd place, for supervision of the best diploma thesis (student Ondřej Rychecký)
  • Participation in the Czech final of the L'Oréal-UNESCO For Women in Science programme, 2016
  • Rector’s Award, 2016, University of Chemistry and Technology, Prague
  • Rector’s Award, 2014, University of Chemistry and Technology, Prague
  • Best Poster Award, 1st place, The 7th Young Researchers’ Retreat (29.-31.7.2013, Kyoto, Japan), selected out of over 70 participants
  • Participation in the Czech final of FameLab 2011
  • Rhodia Award for Chemistry, 4th place (2010)
  • Best Poster Award, 1st place, World Student Conference on Particle Technology (22.-25.4.2010, Delft, Netherland), selected out of over 50 PhD students world-wide
  • Chemical Engineering section of SVK University Science Competition, 2nd place (2005)

Research Interests

  • Droplets
  • Artificial life (protocells, origin of life)
  • Unconventional robotics (liquid robots, chemical robotics)
  • System decanol/decanoate/salt
  • Non-linear dynamics and pattern formation (Dictyostelium discoideum)
  • Chemotaxis (oriented movement in concentration gradients) – biological and artificial
  • Chemobrionics (chemical gardens)
  • Etymology of the word "ROBOT"

Projects

  • 2018-2022: COST Action "Chemobrionics" (management committee member for Czech Republic, science communication manager, webmaster)
  • 2017-2019: Junior Research Grant from the Grant Agency of the Czech Republic “Towards the understanding of evaporation induced pattern formation of decanol droplets” (PI)
  • 2015-2018: EC project “EVOBLISS – Technological Evolution of Synergy Between Physicochemical and Living Systems” (team member, webmaster)
  • 2012-2015: EC project “MICREAGENTS – Microscale Chemically Reactive Electronic Agents” (team member, principal investigator at UCT Prague – prof. Štěpánek)
  • 2008-2013: ERC grant “CHOBOTIX – Chemical Processing by Swarm Robotics” (team member, principal investigator prof. Štěpánek)
  • 2010: student grant of UCT Prague “Experimental study of chemical robots’ behavior in model surrounding“
  • 2009: student grant of UCT Prague “Comparative studies of chemical and physical characterization of chemical robots’ bodies“
  • 2008: student grant of UCT Prague “New metal substrates suitable for analysis by Raman spectroscopy and surface plasmon resonance”
  • 2007: student grant of UCT Prague “Preparation of large-area SERS-active substrates for measurement of Raman spectral maps and testing of their surface nanostructure”

Publications

  1. Cardoso S. S. S., Cartwright J. H. E., Čejková J., Cronin L., Wit A. D., Giannerini S., Horváth D., Rodrigues A., Russell M. J., Sainz-Díaz C. I., Tóth Á. (2020), Chemobrionics: From Self-assembled Material Architectures to the Origin of Life, Artificial Life 26(3), 315-326.
  2. Janská P., Rychecký O., Zadražil A., Štěpánek F., Čejková J. (2019), Liquid oil marbles: increasing the bio-availability of poorly water-soluble drugs, Journal of Pharmaceutical Sciences, 108(6), 2136-2142.
  3. Čejková J., Schwarzenberger K., Eckert K., Tanaka S. (2019), Dancing performance of organic droplets in aqueous surfactant solutions. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 566, 141-147.
  4. Čejková J., Hanczyc M.M., Štěpánek F.  (2018). Multi-Armed Droplets as Shape-Changing Protocells, Artificial Life, 24 (1), 71-79.
  5. Čejková J., Banno T., Štěpánek F., Hanczyc M.M. (2017). Droplets as Liquid Robots, Artificial Life, 23 (4), 528-549 (open access).
  6. Čejková J., Rychecký O. (2017), Tekuté kuličky, Chemické listy 111, 109-114.
  7. Rychecký O., Majerská M., Král V., Štěpánek F., Čejková J. (2017), Spheroid cultivation of HT-29 carcinoma cell line in liquid marbles, Chemical Papers 71(6), 1055–1063.
  8. Čejková J., Štěpánek F., Hanczyc M. (2016), Evaporation-induced pattern formation of decanol droplets, Langmuir 32, 4800-4805.
  9. Čejková J., Novák M., Štěpánek F., Hanczyc M. (2014), Dynamics of chemotactic droplets in salt concentration gradients, Langmuir 30(40), 11937–11944.
  10. Čejková J., Haufová P., Gorný D., Hanuš J., Štěpánek F. (2013), Biologically triggered liberation of sub-micron particles from alginate microcapsules, Journal of Materials Chemistry B  1, 5456-5461.
  11. Čejková J. (2013), Dictyostelium discoideum – model system not only for biologists, Chemické listy 107, 563-600.
  12. Čejková J., Štěpánek F. (2013), Compartmentalized and internally structured particles for drug delivery, Current Pharmaceutical Design 19(35), 6298-6314.
  13. Prokopec V., Kokaislová A., Čejková J., Dendisová M., Člupek M., Matějka P. (2011), Spectroscopic study of SERS- and SEIRA- activity of copper large-scaled surface substrates prepared by electrochemical deposition: what is the role of oxidation-reduction cycle treatment?, Journal of Molecular Structure 993, 410-419.
  14. Čejková J., Hanuš J., Štěpánek F. (2010), Investigation of internal microstructure and thermo-responsive properties of composite PNIPAM/silica microcapsules. ournal of Colloid and Interface Science 346, 352-360.
  15. Ševčíková H., Čejková J., Krausová L., Přibyl M., Štěpánek F., Marek M. (2010) A new traveling wave pattern of Dictyostelium in the presence of cAMP in the agar. Physica D 239, 879-888.
  16. Čejková J., Prokopec V., Brázdová S., Kokaislová A., Matějka P., Štěpánek F. (2009), Characterization of copper SERS-active substrates prepared by electrochemical deposition. Applied Surface Science 255, 7864-7870.
  17. Kokaislová A., Brázdová S., Prokopec V., Člupek M., Čejková J., Matějka P. (2009), Příprava SERS-aktivních měděných substrátů katodickou redukcí a vyhodnocení jejich struktury pomocí mikroskopie atomárních sil. Chemické listy 103, 246-250.
  18. Hilgardt C., Čejková J., Hauser M. J. B., Ševčíková H. (2008), Streamless aggregation of Dictyostelium in the presence of isopropylidenadenosin. Biophysical Chemistry 132, 9-17.
  19. Prokopec V., Čejková J., Matějka P., Hasal P. (2008), Preparation of SERS-active substrates with large surface area for Raman spectral mapping and testing of their surface nanostructure. Surface and Interface Analysis 40, 601-607.

Book Chapters

Book

  • Čejková J. (ed.), ROBOT 100, Vydavatelství VŠCHT Praha, 2020.

Proceedings

(selected from over 40 proceedings papers)

  • 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),   – 9. 9. 2017, MIT Press, pp. 91-95 (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, Kyoto (Japan), 31. 10. -1. 11. 2017, pp. 274-278 (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).

Invited Talks

  •  "Liquid robots are not cells", University of Southern Denmark, Odense, Denmark (23.1.2020)
  •  Liquid robotics, Hiroshima University, Japan (15. 11. 2019)
  • Artificial life in chemical systems: droplets as liquid robots, Physical chemistry seminar, Lund University, Sweden (18.3.2019)
  • Droplets as Liquid Robots, keynote speaker at 2nd Week of Complexity Sciences at Center for Complexity Sciences of National Autonomous University of Mexico, Mexico City (31. 1. -2. 2018)
  • Droplets as Liquid Robots, Institute of Physical Chemistry, Polish Academy of Science, Warsaw (24. 11. 2017)
  • Experimental study of decanol droplets life-like behaviour, Department of Physical and Macromolecular chemistry, Charles University (11. 10. 2017)
  • Kapky jako tekutí roboti, Night of Scientists, University of Chemistry and Technology Prague (6. 10. 2017)
  • Pattern formation of decanol droplets, Keio University, Japan (31. 7. 2017)
  • Experimental study of decanol droplets life-like behaviour, Hiroshima University, Japan (11. 7. 2017)
  • Kapky jako tekutí roboti, AFO - 52. Mezinárodní festival populárně-vědeckých filmů, Olomouc (25. - 30. 4. 2017)
  • Artificial chemotaxis and pattern formation of decanol droplets in the presence of decanoate and salt, Max Planck Institute for Dynamics and Self-Organization, Göttingen, Germany (25. 2. 2016)
  • Unconventional maze solving problems by using biological and artificial chemotaxis, keynote speaker at CHISA 2015, Seč u Chrudimi (9. - 12. 11. 2015)
  • “Chemo-taxi” – oil droplets for targeted cargo delivery, invited speaker at EMN Meeting on Droplets, Phuket, Thailand, (8. - 11. 5. 2015)

Teaching

  • Teaching experience at University of Chemistry and Technology (teaching in Czech and English): Chemical Engineering, Dispersion systems, Microchemical engineering, Laboratory training in chemical engineering (unit operations), Laboratory of manufacturing of nano- and micromaterials, Laboratory of characterization of nano- and microsystems, Chemical Industry and the Environment, Chemical engineering projects
  • Teaching experience at University of Trento: Biochemistry lab courses
  • Supervision of bachelor and master students
  • Supervision of international exchange students (Erasmus, IAESTE)
  • Supervision of high-school students

Professional Membership

  • International Society for Artificial Life (ISAL - board member)
  • Czech Society of Chemical Engineering (ČSCHI)
  • European Colloid and Interface Society (ECIS)
  • International Center of Unconventional Computing

Organisation of Scientific Meetings

Science Popularization and Other Activities

  • Trained for science communication (COST Academy 2019, 2020: “Using social media to communicate your Action”, “Shooting and editing a video for your Action”, “Working with the media – mastering media interviews”, “Storytelling workshop”)
  • FameLab (Czech finalist 2011, member of Czech committee 2014, FameLab Hall in Natural Museum in London 2014, FameLab Echos in Prague 2014)
  • Member of jury selecting the best Czech or Slovak documentary movie at 53rd international festival of science documentary films AFO in Olomouc (2018)
  • Open Science project (Czech Academy of Science) - short movie “Jitka Čejková – Kurátorka mikrorobotů” (2014)
  • Science popularization projects and talks (g. STEP at UCT Prague, Night of Scientists)
  • YouTube channel (with more than 330k views)
  • Teaching in the Summer school for high school students and teachers (at UCT Prague, since 2012)
  • Faculty coordinator of Student scientific conference (UCT Prague, since 2014)
  • Webmaster: Department of Chemical Engineering, COST Action Chemobrionics, Robot 100 (in the past: Faculty of Chemical Engineering in UCT Prague 2014-2018,  EU project Evobliss, Laboratory for Artificial Biology, Kapaji etc.)
  • HORIZON2020 evaluator (2018)
  • External examiner of PhD Thesis, Curtin University, Australia (2018)
  • Reviewer (Nature, Nature Communications, The Journal of Physical Chemistry Letters, Lab on a Chip, Scientific Reports, Langmuir, Colloids and Surfaces A: Physicochemical and Engineering Aspects, Journal of Dispersion Science and Technology, Journal of the Taiwan Institute of Chemical Engineers, Express Polymer Letters, etc.)
  • Member of Academic Senate, Faculty of Chemical Engineering, UCT Prague (2008-2010)
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