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embroidering electronics into the next generation of \"smart\" fabrics

by:Yufengling     2019-09-30
Archaeology found that about 170,000 years ago, humans began to wear clothes, very close to the second one --to-last ice age.
However, even now, the clothes most modern people wear are hardly different from those of the earliest ones.
But this is about to change as flexible electronics are increasingly woven into so-called \"smart fabrics.
\"Many of them are already available for purchase, such as gentle and vibrating yoga leggings for easier yoga, T-
A shirt that tracks athlete performance and a custom sports bra that monitors heart rate.
Intelligent fabrics have potential application prospects in the field of health care (
Measure the heart rate and blood pressure of the patient), defense (
Monitor the health and activity levels of soldiers), cars (
Adjust the seat temperature to make passengers more comfortable)
Even smart city (
Let the signs communicate with passers-).
Ideally, the electronic components of these garments
Sensors, antennas for data transmission and batteries for power supply
It will be small, flexible and basically not noticed by their wearer.
This is true for sensors, many of which are even machineswashable.
But most antennas and batteries are rigid and not waterproof, so they need to fall off gym clothes for women before cleaning them.
My work at Ohio State University\'s electrical science lab is designed to make antennas and power supplies that are equally flexible and washable.
Specifically, we use the guide wire to embroider the electronic product directly into the fabric, which we call \"electronicthreads.
E-antenna embroidery
The thread we are dealing with is a bunch of twisted polymer filaments to provide strength, each with a metal-
Basic coating for electricity.
The polymer cores of each filament are often made of either kaivell or Veron, while the surrounding coating is silver.
Then, dozens or even hundreds of these filaments are twisted together to form a single electron.
Threads usually below half mm. These e-
Threads can be easily used with common commercial embroidery equipment
Same computer
The connection stitching machine people use every day puts their names on sports jackets and jerseys.
The embroidered antenna is light weight, as good as the rigid copper antenna, and can be as complex as the stateof-the-
Printed circuit board. Our e-
The threaded antenna can even be combined with conventional threads in more complex designs, such as integrating the antenna into the company logo or other designs.
We have been able to embroider the antenna on fabric as thin as organza and as thick as Kefla.
Once embroidered, the wire can be connected to the sensor and the battery through a traditional soldering or a flexible interconnect connecting the components together.
So far, we have been able to make smart hats for people with Parkinson\'s disease or epilepsy that read deep brain signals.
We embroidered T.
Shirt with antenna, expanded Wi-
Fi signals the wearer\'s phone.
We have also made mats and sheets to monitor the height of the baby to screen out the various medical conditions for young children.
We have made foldable antennas that measure the surface of the fabric that is bent or lifted.
In addition to the antennaMy lab, it also worked with other researchers in Ohio, including chemist Anne Coe and doctor Dan Sen to make flexible fabrics
Based on a micro generator.
We use a process similar to inkjet printing to place alternating areas of silver and zinc dots on the fabric.
When these metals are in contact with sweat, salt water and even liquid discharge on the wound, silver acts as a positive electrode and zinc acts as a negative electrode
Electricity flows between them.
We produce a small amount of electricity just by letting the fabric damp.
No additional circuits or components are required.
This is a fully flexible, washable power supply that can be connected to other wearable electronics without the need for conventional batteries.
These flexible, wearable electronics will turn clothing into interconnected, sensing, and communication devices that are closely integrated with 21-century interconnected fabrics.
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