This six-session workshop exposed participants to techniques for presenting themselves in public. Students used improvisation, physical and vocal exercises, and multiple presentation assignmentsto help them find their scientific voice when speaking to fellow scientists, funding agents, and the lay public.
In honor of Jesse Silverberg, who continued the tradition set in motion by the original pranksters Sharon Gerbode and Mark Buckley.
We work in collaboration with the Procter & Gamble Company to understand the flow and breakup of complex fluids. In particular, we study the pinch-off dynamics of fluids (e.g. lyotropic surfactants and thermotropic liquid crystals) possessing liquid crystalline order.
Why do some materials grow near-perfect crystals with mirror-smooth faces whereas others grow rough, bumpy crystals? Our group has recently gotten a glimpse of crystal growth in real time — not by watching individual atoms, but rather by freezing model atoms that can be observed directly with an optical microscope.
Colloidal suspensions – where micro-size or nano-size particles are suspended in a fluid – exhibit various equilibrium structures ranging from face-centered and cubic-centered crystals to binary ionic crystals, and even kagome lattices. When driven out-of-equilibrium by shear, even more diverse colloidal structures can be accessed. These structures lead to unique flow behaviors of suspensions.
Articular cartilage, the soft connective tissue that coats bones in joints, is a highly complex and inhomogeneous material. It is made up of a fluid-saturated, cross-linked network of collagen fibrils whose orientation and porosity vary with depth from the articular surface. Interspersed among the network are cells and highly charged molecules called proteoglycans. Cell shape, cell density and proteoglycan density are all also spatially dependent.
High-Resolution Measurement of Shear Mechanical Properties in Articular Cartilage Using GRATE and WAND
Local mechanical properties in articular cartilage and other biological tissues are typically measured by tracking the displacement of cells, cell nuclei and other fiducial markers using particle image velocimetry (PIV) and other feature-tracking methods (see "Quasi-Static Shear Mechanical Properties of Articular Cartilage"). However, these techniques are limited in spatial resolution by the density of trackable markers. In adult articular cartilage, intervertebral disk and other soft tissues, cells can be very sparse. Therefore, we have developed grid-resolution automated tissue elastog
Our current work is focused on characterizing healthy breast tissue. Stay tuned for more results...
As global climates change, agriculture and crop breeding programs must increase productivity to meet the demands of growing populations while simultaneously facing decreases in soil quality.
Articular cartilage (AC), a biological tissue that protects and lubricates joints, plays a critical role during healthy locomotion. While much is known about this tissue's biochemistry and compressive mechanical properties, comparatively less attention has been given to its shear mechanical properties. This represents a critical knowledge gap because cartilage tissue experiences significant shear under normal loading conditions, and may indeed most frequently fail in such circumstances.