u200borigami batteries and accordion sensors could power smart clothes - lithium ion polymer battery
Paper-cut lithium
Ion batteries sewn between two elastic bands (c)
In the upper arm that is straightened at the elbow ,(d)
An upper arm bent at the elbow.
The next two pictures show kirigami LIB that is removed from the elastic band and stretched directly ,(e)
In a compact state and (f)
In the stretching state
Jiang Hanqing/scientific report ancient origami art helps inspire the next generation of wearable technology.
In a study published last week in the journal Science report, Tempe engineers at Arizona State University showed how a cleverly folded stretch battery can be used to power a smartwatch.
Jiang Hanqing, associate professor of mechanical and aerospace engineering at Arizona State University, used a special origami paper called kirigami, which includes both folding and strategic cutting
Ion batteries that can be stretched to 150% of the original length--and still work.
Trend News Google cloud downtime missing connadik state mom Virginia Beach shooting protesters interrupted Harris Chiang and his team to make batteries by coating a piece of Renault-wrapped aluminum foil with conductive materials to make positive and negative electrodes
He then folds the foil and cuts it into a specific kirigami configuration.
Think of it as a precision paper doll.
The team made a battery in "cutting"n-
Create a twist "pattern by folding the foil into stacks and cutting out small symmetrical bits at each crease.
When the battery is stretched and twisted at both ends, the battery looks like a telephone line.
They sewn it into a elastic band and replaced the original battery with a Samsung Gear 2 smartwatch.
Even if it extends from the wrist to the upper arm, the temporary battery wristband can power the watch.
Jiang noted that in the test, a more complex "cut" batteryn-
The energy capacity of the "shear" mode is doubled and can be stretched to double and half the starting length. "The kirigami-
Jiang wrote in his research: "The method-based approach can easily be extended to other applications to develop highly stretchable devices, resulting in a far-reaching and broad range of applications in the field of pulchable and wearable electronics
Meanwhile, in North Carolina, researchers created
Through stretchable conductors inspired by accordion.
Dr. abjette BagarD.
A student in mechanical and aerospace engineering at NC State and the lead author of the paper describing the work in the journal material vision, he said
The "Accordion" geometry reflects the original.
"The only difference is that we have narrowed it down a lot," Bagal said in a statement . ".
Researchers in NC State transferred the evenly spaced conductive zinc oxide rectangular array to a transparent elastic polymer.
The resulting zinc oxide ridges allow the structure to expand and shrink like the wind box of the accordion.
The researchers connected the conductor to the battery and LED bulb and stretched it.
LED lights are on all the time-
Until the stretch breaks the wire connection to the power supply. Chih-
Hao Chang, assistant professor of mechanical and aerospace engineering at NC State and corresponding author of the paper, said, "We are now working on how to improve the conductivity of nano-materials
Accordion structure
At some point we want to find a way to expand the process.
This conductor can be used for flexible electronics, stretch display or wearable sensors.
Maybe one day it can help you track your heart rate on origami
Smart watches.