Program Highlights for year 2013
Novel, cylindrical, ribbon-like
membranes are formed when colloidal particles adsorb at the air-water
interfaces of droplets confined between two glass plates (Fig. a). We have found that the ease with
which such ribbon membranes bend depends on particle shape. Ellipsoidal
particles on the interface locally deform the interface and thereby introduce
In the past few years, the theory of
topological band structures has been generalized beyond topological insulators
to include topological semimetals, including Weyl
semimetals, Dirac semimetals and other “symmetry protected” topological
states. HgTe is a
semimetal in which the degeneracy of the conduction and valence band at the G point is
Diana E. Proffit1, Thomas Philippe1, Jonathan D. Emery1, Qing Ma2, D. Bruce Buchholz1, Peter W. Voorhees1, Michael J. Bedzyk1, Robert P.H. Chang1, Thomas O. Mason1
A range of amorphous structures for a single
chemical-composition material (Indium Oxide)
were observed; the structure dependent on
the growth conditions.
The carrier mobility and film (not carrier)
density of the films was dependent on growth
temperature.
Films grown at 0°C and below are amorphous
The film density decreased from 7.0 g/cm3
Over the past decade, semiconducting carbon
nanotube (CNT) thin films have been recognized as
contending materials for a wide range of applications
in electronics, energy, and sensing. Nevertheless,
CNT transistor performance suitable for real-world
applications awaits understanding-based progress in
the integration of independently pioneered device
In an
effort, spearheaded by Triangle MRSEC, we received support through the NSF-MRI program
for the purchase of Small Angle X-Ray Scattering (SAXS) instrumentation.
The state-of-the-art instruments will serve the greater Research Triangle
community for
research and education, and will be housed in Duke's Shared Materials
Instrumentation Facility (SMIF).
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