Responsive Soft Materials

Research Description

The Velev group is a leader in the emerging research area of constructing “soft robots” from hydrogels. The latest research revealed new hydrogel actuators, “walkers” and soft robotic prototypes.

Previous Projects

Engineering new classes of soft matter actuators from polyelectrolyte hydrogels Daniel Morales

Materials with New Functionalities Imparted by Microfluidics A. Burak Uçar

Soft Electronics Based on Water Gels Hyung Jun Koo

Hydrogel and Biogenic Self-Propelling Particles Rachita Sharma

Remotely Powered Self-Propelling Particles Based on Miniature Diodes Suk Tai Chang & Rachita Sharma

Representative Publications

Morales, D.; Palleau, E.; Dickey, M. D.,; Velev, O. D. Electro-actuated hydrogel walkers with dual responsive legs. Soft Matter 201410, 1337-1348.

Palleau, E.; Morales, D.; Dickey, M. D.; Velev, O. D. Reversible patterning and actuation of hydrogels by electrically assisted ionoprinting. Nature Comm.20134, 2257(1-7).

Koo, H.-J.; Velev, O. D. Regenerable photovoltaic devices with a hydrogel-embedded microvascular network. Sci. Rep. (Nature) 20133, 2357(1-6).

Koo, H.-J.; Velev, O. D. Ionic current devices—Recent progress in the merging of electronic, microfluidic, and biomimetic structures. Biomicrofluidics20137, 031501(1-10).

Koo, H.-J.; So, J.-H.; Dickey, M. D.; Velev, O. D. Towards All-Soft Matter Circuits: Prototypes of Quasi-Liquid Devices with Memristor Characteristics.Advanced Materials 201123, 3559–3564.

Koo, H.-J.; Chang, S. T.; Velev, O. D. Ion-current diode with aqueous gel/SiO2 nanofilm interfaces. Small 20106, 1393–1397.

Cayre, O. J.; Chang, S. T.; Velev, O. D. Polyelectrolyte diode: Nonlinear current response of a junction between aqueous ionic gels. Journal of the American Chemical Society 2007129, 10801–10806.