Tech Briefs Magazine - April 2021 - 54

Facility Focus
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Cornell researchers designed a 3D-printed glove
lined with stretchable fiber-optic sensors that
use light to detect a range of deformations in
real time.

ting on an 8 " wafer, each device costs a
fraction of that same penny.
Researchers designed a new class of
radio devices capable of operating
across a large portion of the growing
wireless spectrum,while adaptively suppressing interferences. The team developed a radio receiver architecture capable of operating across a large portion of
the wireless spectrum while suppressing
interferences as they arise. A new algorithm will allow the receiver to adaptively adjust its interference response as
needed using digital signal processing.
Manufacturing - Ceramic structures
filled with tiny macroscopic pores play an
important role in industrial and biomedical products but they're also notoriously
difficult to fabricate. A new manufacturing technique uses a combination of
computational modeling, porous structure design, and 3D printing to precisely
customize a porous network. Digital light
processing lithography is a type of 3D
printing that, unlike other ceramic 3Dprinting techniques that deposit material
across a build platform, projects light
patterns onto layers of a photocurable
resin. The resin then solidifies where it
has been exposed to light, retaining the
pattern projected onto each layer.
A 3D-printing technique was developed at Cornell that creates cellular
metallic materials by smashing together
powder particles at supersonic speed.
This technology, known as " cold spray, "
results in mechanically robust, porous
structures that are 40% stronger than
similar materials made with conventional manufacturing processes. The structures' small size and porosity make them
particularly well-suited for building biomedical components like replacement
joints. The method uses a nozzle of com-

pressed gas to fire titanium alloy particles at a substrate.
Biomedical - To combat the spread
of COVID-19, a transparent helmet was
developed that prevents 99.6% of viruscontaining droplets exhaled by patients
from reaching the environment. The
helmet provides practitioners access to
the patient's nose and mouth and is connected to a filtration pump that reverses
the flow of air to prevent droplets from
leaving, avoiding contamination of the
clinical environment. Aside from the
helmet's effectiveness, its simple design
and low cost make it more accessible for
preventing virus transmission during
open-mouth procedures.
Animals with extremely sensitive noses,
such as dogs and rats, have nasal structures with two features for capturing molecules: The air passageways in dogs
branch to create many smaller air ducts;
those passages are also maze-like. These
features create increased surface area and
curvature to capture molecules and other
particles on passage walls. An open-source,
3D-printable medical mask inspired by the
nasal structures of animals consists of a
mesh material that incorporates copper,
which kills viruses on contact.
Cornell researchers have made a new
discovery about how seemingly minor
aspects of the internal structure of bone
can be strengthened to withstand repeated wear and tear, a finding that
could help treat patients suffering from
osteoporosis. It could also lead to the
creation of more durable, lightweight
materials for the aerospace industry.
The team used a 3D printer to manufacture bone-inspired material made
from a urethane methacrylate polymer.
They varied the thickness of the rods
and were able to increase the material's
fatigue life by up to 100 times. The reinforced microstructure lattices could be
incorporated into just about any device
and would be particularly beneficial to
the aerospace industry, where ultra-lightweight materials need to withstand
tremendous and repeated strain.

Technology Transfer
Cornell's Center for Technology Licensing brings the University's technological
innovations to the marketplace. For information on licensing Cornell technologies, visit https://ctl.cornell.edu. View
available technologies at https://cornell.
flintbox.com/#technologies.

54

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Tech Briefs, April 2021
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Tech Briefs Magazine - April 2021

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