How to get conductive gels to stick when wet


[MUSIC PLAYING] Polymers can offer a
variety of advantages in biomedical devices. Specifically, polymers that are
good conductors of electricity could help with sensing
or electrostimulation, for example. But there’s one main problem– their inability to adhere
to a surface and stay put despite the
introduction of moisture, perhaps from the body. Currently, electrodes used
for biomedical devices are made of materials in which
stiffness is a major drawback. Because they can’t flex and
stretch as the body moves, they can damage
delicate tissues. In contrast, conductive
polymers can very closely match the softness
and flexibility of the tissues in the body. But until now, there hasn’t been
a way for them to remain stable in wet environments. A new adhesive method developed
by a team of MIT engineers has been designed
to remain intact even when submerged in water. Their method involves an
extremely thin adhesive layer between the conductive polymer
and the substrate material. Though only a few
nanometers thick, this layer penetrates
into the polymer itself, producing a tough, durable,
protective structure that keeps the material in place even
when exposed for long periods to a wet environment. The coating the researchers
used in their tests is made of a hydrophilic or
water-retracting polyurethane that is readily available
and inexpensive, though they say other similar polymers
could also be used. The adhesive layer could
be applied to the devices by a variety of standard
manufacturing processes, including spin coating, spray
coating, and dip coating, making it easy to integrate with
existing fabrication platforms. And because the adhesive layer
allows the conductive material to remain stable in
wet environments, the researchers say
this could allow for the development
of biomedical devices that are reliable and
stable within the body. The researchers say,
before this technology can be deployed into the
field, the material will require longer,
more rigorous testing to confirm stability over
long periods of time. [MUSIC PLAYING]

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14 thoughts on “How to get conductive gels to stick when wet

  1. I thought sticky, flexible, conductive and waterproof materials already existed. Huh. Apparently not.

  2. How about making some lightweight, high current, graphene powder filled, polymer tube insulation encapsulated conductors for electric airplanes, cars and space applications? It's an idea I mentioned at a NASA briefing a few weeks back, but got no responses.

  3. Mıt . you must do a nanotechnology. but you very advanced.
    I love you

    ……………..Turkey……………. Second Abdulhamid

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