Home / Knowledge / News / Textiles / Now, new ink for electronic apparel
Now, new ink for electronic apparel
Jun '15
Courtesy: School of Engineering, University of Tokyo
Courtesy: School of Engineering, University of Tokyo
University of Tokyo researchers have developed a new ink that can be printed on textiles in a single step to form highly conductive and stretchable connections, the university said on its website.

This new functional ink will enable electronic apparel such as sportswear and underwear incorporating sensing devices for measuring a range of biological indicators such as heart rate and muscle contraction.

Current printed electronics, such as transistors, light emitted diodes and solar panels, can be printed on plastic or paper substrates, but these substrates tend to be rigid or hard. The use of soft, stretchable material would enable a new generation of wearable devices that fit themselves to the human body. However, it has proved difficult to make an ink that is both highly conductive and elastic without a complicated multi-step printing process.

Now, Professor Takao Someya’s research group at the University of Tokyo’s Graduate School of Engineering has developed an elastic conducting ink that is easily printed on textiles and patterned in a single printing step.

This ink is comprised of silver flakes, organic solvent, fluorine rubber and fluorine surfactant. The ink exhibited high conductivity even when it was stretched to more than three times its original length, which marks the highest value reported for stretchable conductors that can be extended to more than two and a half times their original length.

Using this new ink, the group created a wrist-band muscle activity sensor by printing an elastic conductor on a sportswear material and combining it with an organic transistor amplifier circuit. This sensor can measure muscle activity by detecting muscle electrical potentials over an area of 4×4 cm2 with nine electrodes placed 2 cm apart in a 3x3 grid.

“Our team aims to develop comfortable wearable devices. This ink was developed as part of this endeavor,” says Someya. “The biggest challenge was obtaining high conductivity and stretchability with a simple one-step printing process. We were able to achieve this by use of a surfactant that allowed the silver flakes to self-assemble at the surface of the printed pattern, ensuring high conductivity.” (SH)

Fibre2fashion News Desk – India

Must ReadView All

Apparel/Garments | On 21st Oct 2016

China’s garment retail sales grow 7.2% in Jan-Sept ’16

Retail sales of garments, footwear, hats and knitwear of Chinese...

Mike Preston, executive director of the Arkansas Economic Development Commission (AEDC), signing MoU with Tang from Suzhou Tianyuan Garments company. Courtesy: Government of Arkansas

Apparel/Garments | On 21st Oct 2016

Suzhou Tianyuan to open $20 mn garment factory in US

Suzhou Tianyuan Garments company, a Chinese manufacturer of casual...

Textiles | On 21st Oct 2016

Pakistan’s textile exports fall 5.96% y-o-y in Q1 FY17

The value of textile and garment exports made by Pakistan decreased...

Interviews View All

Binoy Ravjani
Hero's Fashion

‘One of the recent trends in hand block printing is the indigo process,...

Rashi Menda

Every fifth sale we make on Zapyle is a repeat purchase

Sunil Kumar Sharma
Loknayak JPNSSSG Ltd

'The blend of cotton–linen yarn has high demand in the domestic and...

Eamonn Tighe
Nature Works LLC

Eamonn Tighe, Fibres and Nonwovens - Business Development Manager of...

Kerem Durdag
Biovation II LLC

Kerem Durdag, CEO, Biovation II LLC, provides an insight into future...

Kevin Nelson

Kevin Nelson, Chief Scientific Officer, TissueGen discusses the growing...

Robert Brunner

Golfwear and menswear brand Devereux is set for greener pastures. Robert...

Ritu Kumar
Label Ritu Kumar

‘Classics will return’ "There are a lot of people wearing western clothes ...

Jay Ramrakhiani
Occasions Elegance Wear

It is believed that by early 19th century, Varanasi weavers had moved away ...

Press Release

Press Release

Letter to Editor

Letter to Editor

RSS Feed

RSS Feed

Submit your press release on


Letter To Editor

(Max. 8000 char.)

Search Companies

October 2016

October 2016

Subscribe today and get the latest update on Textiles, Fashion, Apparel and so on.


Browse Our Archives


Advanced Search