Research in the Osuji lab is centered on experimental studies of structure and dynamics of soft materials and complex fluids. The principal areas of interest are supramolecular structures and liquid crystalline order in polymers, directed self-assembly of soft mesophases and polymer nanocomposites, kinetic arrest and aging of disordered complex fluids, rheology of colloidal suspensions, and microfluidic studies of multiphase flows. The work of the group is strongly motivated by the potential to develop functional materials and devices is several cases. We are particularly interested in applications in clean water and clean energy generation, analytical separations, nanomaterials synthesis and engineering better complex fluids in many forms. More information about, and contact details for Prof. Osuji are available here. Lab openings are listed here.
Electrosprayed block copolymersimages/electrosprayed_SEBS.png
AFM image of an electrosprayed thin film of a triblock copolymer showing well-ordered cylindrical domains of poly(styrene).
Magnetically aligned block copolymersimages/peo_lc_saxs_gisaxs.png
X-ray scattering from magnetically aligned PEO block copolymers. These are interesting materials for ionic transport membranes.
Dried lyotropic ZnO textureimages/lyotropic_ZnO_dried.png
Dried film of lyotropic ZnO nanowires.
Aligned lyotropic mesophaseimages/PM_BRIJ56_SAXS_splash.png
X-ray Scattering from a highly aligned hexagonal lyotropic mesophase.
Vorticity aligned structuresimages/carbon_black_shear_structures_r.jpg
Highly anisotropic vorticity aligned flocs in sticky colloidal dispersions.
Different sequence distributions of hydrogen bonded surfactants along polymer backbone.
Selective transport of ions or other species in a block copolymer thin film membrane.
Shear thickening in sticky colloidal dispersions is controlled by a critical stress.
Scattering from degenerate alignment of lamellar liquid crystalline block copolymers
Supramolecular LC polymerimages/MG_SAXS.jpg
Polymer-Surfactant complexes form temperature dependent liquid crystalline phases.
Birefringent lyotropic textureimages/lc_texture.png
Birefringent texture of a lyotropic mesophase viewed through crossed polarizers.
Kinetic arrest in colloidal suspensions displays a characteristic signature, with arrest times exponentially dependent on applied stresses.