TY - JOUR
T1 - Compression and reswelling of microgel particles after an osmotic shock
AU - Sleeboom, J.J.F.
AU - Voudouris, P.
AU - Punter, M.T.J.J.M.
AU - Aangenendt, F.J.
AU - Florea, D.
AU - van der Schoot, P.P.A.M.
AU - Wyss, H.M.
PY - 2017/8/31
Y1 - 2017/8/31
N2 - We use dedicated microfluidic devices to expose soft hydrogel particles to a rapid change in the externally applied osmotic pressure and observe a surprising, non-monotonic response: After an initial rapid compression, the particle slowly reswells to approximately its original size. We theoretically account for this behavior, enabling us to 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.
AB - We use dedicated microfluidic devices to expose soft hydrogel particles to a rapid change in the externally applied osmotic pressure and observe a surprising, non-monotonic response: After an initial rapid compression, the particle slowly reswells to approximately its original size. We theoretically account for this behavior, enabling us to 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.
U2 - 10.1103/PhysRevLett.119.098001
DO - 10.1103/PhysRevLett.119.098001
M3 - Article
C2 - 28949568
SN - 0031-9007
VL - 119
JO - Physical Review Letters
JF - Physical Review Letters
IS - 9
M1 - 098001
ER -