Medical Design Briefs - January 2023 - 27

n Graphene Boosts
Flexible and Wearable
Electronics
After
a
substrate
is
coated
with
graphene, it appears shinier (right).
(Credit: Caltech)
In two new studies, researchers
demonstrate that
graphene can greatly improve
electrical circuits required
for wearable and
flexible electronics such as
smart health patches and other flexible devices.
In one study, they demonstrated that gold coated in
graphene could better withstand the sweat of a person's body,
and thus would make better implantable biosensors. Gold is a
common ingredient used in the development of implantable
biosensors, or smart patches - nanoscale devices for monitoring
various health conditions. Graphene slows down the
rate at which the gold is corroded.
The researchers grew graphene on gold and then exposed
the material to saline solutions that mimic sweat. The results
showed that the graphene-coated structure remained intact
under conditions equivalent to approximately one month at
normal human body temperatures, much longer than what is
possible with gold alone.
For more information, visit www.medicaldesignbriefs.com/
roundup/0123/graphene.
Researchers
developed
a
fully
rubbery stretchable diode that
maintains performance. (Credit:
Jeff Xu/Penn State)
n Stretchable Rubber Diode
for Medical, Electronic Devices
A fully rubbery stretchable diode
maintains performance. Flexible
devices can behave more like biological
tissue, allowing for better
bio-integrated devices. An example
may be a soft patch device that
could be implanted on the heart.
To achieve such electrical performance
while the diode is mechanically
stretched, the researchers rationally considered the
device architecture, vertical structures, and layout. In addition
to benefits for more flexible medical devices, the development
also has implications for power management systems in these
medical devices toward self-sustainable systems.
Next steps include further optimizing the diode and integrating
it into more complex systems. The team is looking to
improve the diode architectures and performances and to
achieve unperturbed operations even under very large extents
of mechanical stretch or deformation. They want to use these
diodes to address critical device needs in applications such as
robotics and biomedical devices.
For more information, visit www.medicaldesignbriefs.com/
roundup/0123/diode.
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http://www.medicaldesignbriefs.com/roundup/0123/graphene http://www.medicaldesignbriefs.com/roundup/0123/diode http://info.hotims.com/84475-754 http://www.medicaldesignbriefs.com

Medical Design Briefs - January 2023

Table of Contents for the Digital Edition of Medical Design Briefs - January 2023

Medical Design Briefs - January 2023 - CV1A
Medical Design Briefs - January 2023 - CV1B
Medical Design Briefs - January 2023 - Cov1
Medical Design Briefs - January 2023 - Cov2
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Medical Design Briefs - January 2023 - Cov3
Medical Design Briefs - January 2023 - Cov4
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https://www.nxtbook.com/smg/techbriefs/22MDB03
https://www.nxtbook.com/smg/techbriefs/22MDB02
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https://www.nxtbook.com/smg/techbriefs/21MDB12
https://www.nxtbook.com/smg/techbriefs/21MDB11
https://www.nxtbook.com/smg/techbriefs/21MDB10
https://www.nxtbook.com/smg/techbriefs/21MDB09
https://www.nxtbook.com/smg/techbriefs/21MDB08
https://www.nxtbook.com/smg/techbriefs/21MDB07
https://www.nxtbook.com/smg/techbriefs/21MDB06
https://www.nxtbook.com/smg/techbriefs/21MDB05
https://www.nxtbook.com/smg/techbriefs/21MDB04
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