News
Soft Robotic Concepts in Catheter Design: an On-demand Fouling-release Urinary Catheter
Biofilms
form on submerged or moist surfaces when bacteria attach and excrete slimy
biopolymers to protect themselves,
and they are particularly problematic when they develop on urinary
catheters.
News
Phase Transformations in Binary Colloidal Monolayers
Diffusionless martensitic transformations are a class of solid–solid phase transitions in which the crystal unit cell changes shape and internal structure, while keeping its stoichiometry constant. Because these transformations do not require long-range diffusion, they are fast and repeatable, and thus have been exploited in a number of engineeringapplications.
News
Shape-Shifting Liquid Metal Becomes a Reality
Terminator
2 is
widely remembered for its
metal shape-shifting
villain.
Impervious
to
bullets, explosives,
and fire,
the T-1000
robot was
capable of changing shape at will. Researchers at the
North Carolina State University
have taken a step towards
making science fiction a
reality by developing a technique for controlling the surface tension of liquid
metals using very low voltages. This technology paves the way for shape-reconfigurable
metal
components in
News
Probing spin and charge on the nanoscale
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
News
Complex Fluids Make Non-Spherical Particle Synthesis Easy!
Non-Spherical, patchy particles can be synthesized using liquid crystalline templates
News
Student Fellows Wow at Family Science Fair
RT-MRSEC
Graduate Student Fellows and staff joined area scientists to participate in
Sherwood Githens
Middle School’s Family Science Fair Night on January 29, 2015.
News
Biologically Synthesized Proteins that Spontaneously Self-Assemble into Nano-scale structures
Researchers from Duke University have
developed biologically
synthesized
proteins that can form nano-scale
structures of various sizes, shapes, and behaviors.
These proteins, called elastin-like
polypeptide block copolymers, spontaneously self-assemble into
different structures based on their interactions with other proteins and water. By
changing their sequence, the researchers can control the shape and behavior of
the structures that they form.
News
A New Liquid-Based Technology for Scalable Fabrication of Polymer Nanofibers
U.S. National Science Foundation
support has enabled the team to introduce a novel method
for formation of a broad range of polymer nanofibers and nanomaterials. The patented technique, illustrated in the Figure (left), is based on shearing of polymer solution
inside viscous medium.
It is extremely simple, efficient and readily scalable and can be
applied to the fabrication of nanofibers from most types of commercial and special use
polymers. The team has scaled up
the process to a continuous production of polymer nanofibers at
rates of kgs/hour
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