• Chemistry and Materials
  • Digital World and Robotics

Physics of Complex Systems (PSC)

Research unit - UR 4663


The activities on liquid crystals and solid state physics carried out by the PSC team have reached a
national and international visibility. In our laboratory,
we study liquid crystals in confined geometries (planar
cells, homeotropic cells, twisted cells, etc.), in free
films (liquid crystal drops on glass slides) or in freely
suspended films. We are particularly interested in the
electro-optical and dielectric properties and under
illumination in the different geometries.
The work undertaken reinforces our areas of expertise:
they allow us to ensure the development of all our members, who skillfully
juggle theory and experimentation. Our interaction with the economic,
social and cultural environment is strengthened. This is also one of our


  • Claire MEYER
  • Laetitia NUNCQ
  • Bruno METTOUT


33 rue Saint-Leu
80039 AMIENS



Effectif total : 9

Personnel de recherche : 7

Personnel d'appui à la recherche : 1



The activities of the LPSC focus on two thematic axes:

Axis 1: Liquid crystals

• Study of the interface of an anisotropic liquid with a solid substrate (I. Lelidis, P. Gisse, J. Pavel, H. Pasco Logbo)
• Study of composite systems: liquid crystals / nanoparticles (C. Meyer, I. Lelidis)
• Study of different macroscopic defect textures (focal conical domains, double helices, rods,...) (C. Meyer)
• Study of bio-mimicry of myoblast fusion (H. Vasseur, J. Pavel)
• Study of the structural and vibrational properties of flavonoid nano-systems for biomedical purposes (S. Bresson, F. Bougrioua).
• Multi-loop photoactivatable and dynamic properties in liquid crystal-based membranes (F. Bougrioua,I. Tekaya)

Axis 2: Theory of complex systems

• Study of the electrical properties of granular media (R. Bouzerar, A. Tekaya, E. Chevalier)
• The influence of the depolarization field and ions on the properties of ferroelectric liquid crystal cells (I.Lelidis, B. Mettout, J. Pavel, H. Pasco Logbo, P. Gisse)
• Ferroelectric liquid crystal films. (Mettout B)
• Study of bifurcations of intracranial dynamics and hydrocephalus (R. Bouzerar, I. Tekaya)

Example(s) of projects

• ANR Bestnematics project (2016-2020)
Curved molecule nematics with negative elasticity and spontaneous modulation with short steps
Budget: 500 k€
Leader: Claire Meyer (PSC-UPJV)
Partners: MT-TB Institut Mines Telecom-Telecom Bretagne; EVOSENS; L2C Laboratoire Charles
Coulomb; CNRS - LPS Centre National de la Recherche Scientifique

• PHC Cogito
Travel of researchers, engineers, postdocs, doctoral students between France and Croatia (2016-2018)
Porteur : Claire Meyer (PSC-UPJV)

• PHC Dnipro
Travel of researchers / engineers / postdocs / doctoral students between France and Ukraine (2015-2017)
Project Leader: Claire Meyer (PSC-UPJV)

Example(s) of publications

1. V. Lorman, B. Mettout, Unconventional Mesophases Formed by Condensed Vector Waves in a Medium of Achiral Molecules. February 1999, Physical Review Letters 82(5):940-943. DOI:10.1103/PhysRevLett.82.940

2. B. Mettout, H. Logbo, H. Vasseur, P. Gisse, Dechiralisation lines–induced unwinding in confined SmC* liquid crystals, March 2016, Liquid Crystals 43(8):1-12, DOI:10.1080/02678292.2016.1157632

3. M. Halaby Macary, G. Damême, A. Gibek, V. Dubuffet, B. Dupuy, J. Picart, R. F. Dimeni, C. Meyer, Materials14(16),453(2021).

4. C. Meyer, C. Blanc, G. R. Luckhurst, P. Davidson et I. Dozov, Biaxiality-driven twist-bend to splay-bend nematic phase transition induced by an electric field, Science Advances, 6, 36, eabb8212 (2020).

5. H. Vasseur, K. Djellab. Planar and non-planar solidification of optically organised smectic films. Liquid Crystals 38 (5), 575-579 (2011)

All publications can be found here : 🡭

Collaborations/Partners/Scientific clients

National : Université de Montpellier 2, Université Paris 7, Université Paris-Saclay, Sorbonne Université, Université de Lille 1, Université de Lyon 1

International : Ryerson University (Canada), Bucharest Polytechnic (Romania), Turin Polytechnic (Italy), Institute of Physics of the Prague Academy of Sciences (Czech Republic), University of Vienna (Austria), University of Bonn (Germany), University of Hamburg (Germany)Tokyo Institute of Technology (Japan)

Services offers

Services provided

We provide services according to our expertise.

Training offers

Every year, several trainees come to the laboratory to introduce them to laboratory research: trainees from all years of university come between 2 and 6 months to work with one or more researchers of the team.

Consulting services

We provide consulting services according to our expertise.



Affiliated institutions / organisations

Doctoral schools

Competitive cluster

Regional strategic areas of activity

  • Chemistry and Materials
    • Coatings and surface treatments
    • Industrial processes engineering, efficient processes
    • Recycling of materials and efficient use of material resources
    • Textiles, composites, materials
  • Digital World and Robotics
    • Digital modeling, digital twins, data visualization