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Soft matter and physics-biology interface


"Soft matter", within condensed matter physics, includes not only "ordinary" liquids, but also more complex fluids. These complex fluids generally behave as liquids at a molecular scale, and simultaneously show some organization at a supramolecular scale (sometimes there are several different kinds of organization depending on the length scale). The field of application is huge, indeed soft matter is everywhere in our everyday life : cosmetics (creams, shampoos...), food (yoghurts, jellies..), mud, sand, liquid crystals (watches, computer screens), biological objects (cells) among others. The word "soft" refers to the fact that all these objects can be easily deformed, being very sensitive to external parameters (temperature, electric field...), in other words they are fragile.

The research topic named "soft matter and physics-biology interface" of our laboratory gathers very diverse physical systems, from biological materials to industrial plastic materials. Experimental studies concern organization and dynamics of soft matter systems on a wide range of length scale (from the molecular to the macroscopic scale) ; the techniques used are extremely diverse and most of them are available inside the laboratory. They are completed by theoretical studies, modelizations and numerical simulations.


Hexagonal columnar phase of nucleosomes observed with under polarizing microscope (115x171µm²).

Numerical simulation of a tear in a filled elastomer.

Faceted droplet of a liquid crystal in cubic phase, observed under optical microscope.

Scientific teams :
 
- Matter and Radiation
- Self-assembled Biological Objects
- Soft Interfaces
- Theory
- Tissues and biological fibres

Research topics :
Experimental techniques :
 
- Adhesion and friction
- filled elastomers
- Polymers
- Nanotubes in liquid crystals
- Mixtures of polymers and tensioactive materials
- Liquid crystals
- Mesoporous materials
- Mineral liquid crystals
- Soap films
- Flow of confined liquids
- Foams
- Mechanics and flow of threshold fluids
- Biological tissues and fibers
- Synthesis of metallic nanoparticles in mesophases
- Biomineralization
- DNA
 
- NMR
- AFM
- DSC
- Light scattering
- Osmometry
- Biochemistry
- Ellipsometry
- Optical microscopy
- Interfacial rheometry
- Conductimétrie
- X-rays
- Neutrons
- Numerical simulations
- Cryo-electronic microscopy

 

Recent publications :
 

2019



  • Ablett JM, Prieur D, Céolin D, et al. The GALAXIES inelastic hard X-ray scattering end-station at Synchrotron SOLEIL. Journal of Synchrotron Radiation. 2019;26(1):263-271. Available at: http://scripts.iucr.org/cgi-bin/paper?S160057751801559X. Consulté février 13, 2019.

  • Botet R, Kuratsuji H. The duality between a non-Hermitian two-state quantum system and a massless charged particle. Journal of Physics A: Mathematical and Theoretical. 2019;52(3):035303.

  • Cabeça R, Godinho MH, Pieranski P. Magnetic tweezers for captive disclination loops. The European Physical Journal Special Topics. 2019;227(17):2439-2454.

  • Chen H, Zhou L, Shi X, et al. AIE Fluorescent Gelators with Thermo‐, Mechano‐, and Vapochromic Properties. Chemistry – An Asian Journal. 2019;14(6):781-788.

  • Chevreuil M, Fieulaine S, Poncet L, et al. Characterization of the Assembly and Disassembly of Capsid Proteins Derived from Hepatitis B Virus. Biophysical Journal. 2019;116(3):159a.

  • Colboc H, Moguelet P, Bazin D, et al. Physicochemical characterization of inorganic deposits associated with granulomas in cutaneous sarcoidosis. Journal of the European Academy of Dermatology and Venereology. 2019;33(1):198-203.

  • Forel E, Dollet B, Langevin D, Rio E. Coalescence in Two-Dimensional Foams: A Purely Statistical Process Dependent on Film Area. Physical Review Letters. 2019;122(8).

  • Ginot G, Höhler R, Mariot S, Kraynik A, Drenckhan-Andreatta W. Juggling bubbles in square capillaries: an experimental proof of non-pairwise bubble interactions. Soft Matter. 2019:10.1039.C8SM02477D.

  • Gomez J-P, Tresset G, Pichon C, Midoux P. Improved histidinylated lPEI polyplexes for skeletal muscle cells transfection. International Journal of Pharmaceutics. 2019;559:58-67.

  • Kiparissoff-Bondil H, Devisme S, Rauline D, Chopinez F, Restagno F, Léger L. Evidences for flow-assisted interfacial reaction in coextruded PA6/PP/PA6 films. Polymer Engineering & Science. 2019;59(S1):E44-E50.