Program Highlights for year 2014
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
consortium coordinated by the Wisconsin MRSEC has grown
to 20 to 25 members. The Wisconsin
now partnered with
the University of Wisconsin business school to develop strategies
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
Significant new addition
the past year is a
Cameca LEAP 3000 Si ATOM Probe.
arrays of high purity
(>99.9%) semiconducting single-walled carbon nanotubes (s-SWCNTs)
a large area has
been a significant challenge in materials synthesis. Towards
General Overview: Researchers
at the Wisconsin MRSEC are working to develop sensors that can detect toxic
substances near a single cell by exploiting the unique properties of liquid
crystals (LC). LCs are materials that
General Overview: The
Wisconsin MRSEC is investigating innovative methods to incorporate a greatly
expanded diversity of atom types into semiconductors, thus yielding materials
with a new range of electronic properties. Semiconductors are the foundation of modern electronic
of the UW MRSEC Interdisciplinary Education Group (IEG) collaborated with MRSEC
researchers to develop a laboratory method that enables students to synthesize
research quality graphene
by CVD. The method uses safe,
inexpensive equipment and reagents so the synthesis can be performed in a high
school classroom. To date, the IEG has
Simulations of a model for microtubule(MT)-based active nematics capture experimentally observed defect dynamics. The image on the right shows three sequential images from experimental system in which +½ and -½ defects are created through a bending stability and subsequently separate.
While conventional materials are assembled from inanimate building blocks, we are exploring the behavior of soft materials in which the constituent components consume energy and spontaneously coordinate their microscopic behavior and form novel materials such as active gels, crawling emulsion droplets, and living liquid crystals.
Electrons in epitaxial graphene nanoribbons travel unimpeded at high speed for large distances, so that they are ideally suited for graphene electronics.