Background: In focal repair of joint cartilage and meniscus, initial stiffness and strength of repairs are generally much less than surrounding tissue. This increases early failure potential. Secure primary fixation of the repair material is also a problem. Acrylamide polymer double-network (DN) hydrogels are candidate-improved repair materials. DN gels have exceptional strength and toughness c...

Cryogel beads, fabricated by the microchannel liquid-flow focusing and cryo-polymerization method, have micron-scale supermacropores allowing the passage of crude feedstocks, and could be of interest as chromatographic adsorbents in bioseparation applications. In this work, we provide a rapid freezing and continuous formation method for cryogel beads by cryo-polymerization using dry ice particl...

The role of sequential adsorption of a non-interacting pair of polymer (polyacrylic acidPAA) and surfactant (sodium dodecyl sulfate-SOS) on alumina particles and in determining the stability of their suspensions was studied with particular attention to the confonnation of the polymer. It was found that the sequence of addition is of critical importance in detennining the dispersion/flocculation...

The overall goal of this thesis was to exploit the versatility of the polyelectrolyte multilayer (PEM) platform to consider bacteria‐substrata interactions by varying multilayer assembly and post‐assembly conditions. We developed multiple PEM systems to probe the ability of substrata to resist bacteria attachment or act as contact‐killing antimicrobials. In the first study, by varying the pH ...

Stimuli-responsive polymer microgels can be produced with exquisite control using droplet microfluidics; however, in existing methods, the droplet templating is strongly coupled to the material synthesis, because droplet solidification usually occurs through rapid polymerization immediately after the microfluidic droplet formation. This circumstance limits independent control of the material pr...

•Endowing the capability of partly gel-sol transition to hydrogel•Exhibiting reversible appearance sol-lubricating layer triggered by UV/Vis light•Integrating responsive supramolecular network within polymer framework Supramolecular hydrogel with unique responding external stimuli has exhibited unprecedented superiority in constructing smart materials exceptional features, such as lubrication, ...

Adv. Mater. 2009, 21, 1949–1953 2009 WILEY-VCH Verlag G IO N Janus particles are non-centrosymmetric particles with two distinct sides. The two sides may differ in surface wettability or in optical, electrical, or magnetic properties. Depending upon the anisotropic properties, these particles can be used as emulsion stabilizers, analogous to surfactant molecules, optical probes for chemical, bi...

Nucleophilic substitutions of the reactive chlorine atoms in either cyanuric or phosphonitrilic chloride by the bridging 4,4’-bipyridine, 1,4-phenylenediamine or benzidine units lead to the formation of two(2-D) or threedimensional (3-D) covalent networks, according to the spatial arrangement of the chlorine atoms in each particular triazine core. 1-2 The materials are electrochemically active ...

It has previously been claimed that agent technologies facilitate software development by virtue of their high-level abstractions for interactions. We address a more specific characterization and utility. We believe that it is important to distinguish agent technologies from other software technologies by virtue of a set of unique software characteristics. This is in contrast to much in the lit...