Compression and reswelling of microgel particles after an osmotic shock

Autor: Sleeboom, Jelle F., Voudouris, Panayiotis, Punter, Melle T. J. J. M., Aangenendt, Frank J., Florea, Daniel, Schoot, Paul van der, Wyss, Hans M., Sub Algemeen Theoretical Physics, Theoretical Physics
Přispěvatelé: Soft Tissue Biomech. & Tissue Eng., Microsystems, MaTe : Materials Technology, Institute for Complex Molecular Systems, Group Den Toonder, Soft Matter and Biological Physics, Group Wyss, Sub Algemeen Theoretical Physics, Theoretical Physics
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Materials science
Osmotic shock
physics.chem-ph
Microfluidics
FOS: Physical sciences
General Physics and Astronomy
02 engineering and technology
Condensed Matter - Soft Condensed Matter
Thermal diffusivity
Soft colloids
01 natural sciences
Diffusion
Physics - Chemical Physics
0103 physical sciences
Osmotic pressure
Composite material
010306 general physics
Flows in porous media
cond-mat.soft
Chemical Physics (physics.chem-ph)
Condensed Matter - Materials Science
Osmotic interactions
Polymer gels
Fluid Dynamics (physics.flu-dyn)
Materials Science (cond-mat.mtrl-sci)
Mechanical testing
Hydrogels
Physics - Fluid Dynamics
021001 nanoscience & nanotechnology
Controlled release
cond-mat.mtrl-sci
physics.flu-dyn
Compressive strength
Permeability (electromagnetism)
Self-healing hydrogels
Soft Condensed Matter (cond-mat.soft)
0210 nano-technology
Zdroj: Physical Review Letters, 119(9):098001. American Physical Society
Physical Review Letters, 119(9). American Physical Society
arXiv.org, e-Print Archive, Physics
ISSUE=1612.07694;TITLE=arXiv.org, e-Print Archive, Physics
ISSN: 0031-9007
Popis: We use dedicated microfluidic devices to expose soft hydrogel particles to a rapid change in the externally applied osmotic pressure and observe a non-monotonic response: After an initial rapid compression the particle slowly reswells to approximately its original size. Using a simple phenomenological and a more elaborate poroelastic model, we extract important material properties from a single microfluidic experiment, including the compressive modulus, the gel permeability and the diffusivity of the osmolyte inside the gel. We expect our approach to be relevant to applications such as controlled release, chromatography, and responsive materials.
Comment: 9 pages, 6 figures, submitted to Phys Rev
Databáze: OpenAIRE