Highlights
Jun 17, 2014
University of Colorado at Boulder
Ferronematic Fredericksz Transition
LCMRC researchers are
exploring the recently discovered ferronematic liquid crystal phase, revealing a dramatic polar
magneto-optical response to externally applied magnetic field in
May 28, 2014
Yale University
Engineering Cellular Response Using Nanopatterned Bulk Metallic Glass (BMG)
J. Padmanabhan, E. Kinser, M. Stalter, C. Duncan-Lewis, J. Balestrini, A. Sawyer, J. Schroers, T. Kyriakides, Engineering Cellular Response Using Nanopatterned Bulk Metallic Glass. ACS Nano 2014.
Biomaterials implanted in the body evoke a “Foreign body response” which results in encapsulation of the material in a collagen-rich protein capsule. Fibroblast cells, which produce collagen, mediate this process that leads to biomaterial rejection / device failure in vivo. Surface nanotopography of BMGs can be used to engineer fibroblast-material interactions.
May 22, 2014
Harvard University
Sensor Skin - A platform for highly stretchable, biocompatible, transparent sensors
Suo and Whitesides
In
work reported in Science (August 20, 2013) a Harvard MRSEC team led by Suo and Whitesides developed a transparent “ionic skin,” a sensor skin
using ionic conductors. It senses signals with high stability and wide dynamic
range, from a gentle touch of a finger to strains over 500%. The new ionic skin
has attributes required for biocompatibility in medical devices and
May 22, 2014
Harvard University
Electrically collapsible hydrogels with enhanced mechanical toughness
Clarke, Mooney, Parker, Suo, and Vlassak
A
Harvard MRSEC team led by Clarke, Mooney, Parker, Suo, and Vlassak has developed new hydrogels
that are both electrically responsive and mechanically tough. Poly(acrylic
acid) hydrogels can be made to be macroporous and therefore capable of rapid
May 8, 2014
University of Nebraska - Lincoln
Magnetic Domain Structure of Cobalt Nanospirals
Eva Schubert, Daniel Schmidt, and Ralph Skomski (Nebraska MRSEC); Charudatta Phatak and Amanda Petford-Long (Argonne National Laboratory)
Nanoscale three-dimensional (3D) structures are
building blocks for the fabrication of miniature switching devices and can be
used as functional units in nanorobotics. The functionality of the 3D
structures is affected by their size and shape and may significantly differ
depending on the properties of the bulk material. Nebraska MRSEC researchers
May 7, 2014
University of California, Santa Barbara
Plastic deformation of plaque enhances bond strength
Desmond, Zacchia, Rodriguez-Martinez; Valentine, MRL UCSB
Fracture energy of plaque/glass interface
Gc ≈ 100 J/m2
104 × larger than Eadh of mfp5 (the most adhesive protein)!
May 7, 2014
University of California, Santa Barbara
Probing spin and charge on the nanoscale
MRL
We are building a scanning probe microscope to study spin and charge on the nanoscale. The magnetic sensing element is a nitrogen-vacancy center (NV) in diamond, which should afford single electron spin sensitivity with 10 nm spatial resolution.
Schematic of diamond-based scanning probe magnetometer
Confocal fluorescence images showing relative locations of NV and Gd-functionalized tip
May 7, 2014
University of Wisconsin - Madison
Partnering with Wisconsin Industry
Jon McCarthy and Nicholas L. Abbott, University of Wisconsin - Madison
The
industrial
consortium coordinated by the Wisconsin MRSEC has grown
to 20 to 25 members. The Wisconsin
MRSEC has
now partnered with
the University of Wisconsin business school to develop strategies
to expand further our impact on Wisconsin and regional industry. The business school study was conducted by three
MBA students, all with industry experience. The MBA students interviewed
May 7, 2014
University of Wisconsin - Madison
Cameca LEAP Atom Probe at UW Madison
Jon McCarthy and Nicholas L. Abbott, University of Wisconsin - Madison
The
wide
range of instrumentation within the University of Wisconsin MRSEC Shared
Instrumentation Facilities (UW-MRSEC SIF) can now be accessed by academic and
industry users around the nation via the Materials Research Facilities Network
(MFRN.org). A
Significant new addition
over
the past year is a
Cameca LEAP 3000 Si ATOM Probe.
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