February 21, 2017,
Chemistry/Nanotechnology, Technology/Electronics
![We report the exfoliation of graphite in aqueous solutions under high shear rate [∼ 108 s–1] turbulent flow conditions, with a 100% exfoliation yield. The material is stabilized without centrifugation at concentrations up to 100 g/L using carboxymethylcellulose sodium salt to formulate conductive printable inks. The sheet resistance of blade coated films is below ∼2Ω/□. This is a simple and scalable production route for conductive inks for large-area printing in flexible electronics.](https://pubs.acs.org/appl/literatum/publisher/achs/journals/content/ancac3/0/ancac3.ahead-of-print/acsnano.6b07735/20170220/images/medium/nn-2016-07735d_0014.gif)
We report the exfoliation of graphite in aqueous solutions under high shear rate [∼ 108 s–1] turbulent flow conditions, with a 100% exfoliation yield. The material is stabilized without centrifugation at concentrations up to 100 g/L using carboxymethylcellulose sodium salt to formulate conductive printable inks. The sheet resistance of blade coated films is below ∼2Ω/□. This is a simple and scalable production route for conductive inks for large-area printing in flexible electronics.
January 13, 2017,
Physics, Technology/Electronics
Dr. Png Rui-Qi (left), Mervin Ang (middle) and Cindy Tang (right) working on conducting polymers that can provide unprecedented ohmic contacts for better performance in a wide range of organic semiconductor devices. Credit: Seah Zong Long
Semiconductors, which are the very basic components of electronic devices, have improved our lives in many ways. They can be found in lighting, displays, solar modules and microprocessors that are installed in almost all modern day devices, from mobile phones, washing machines, and cars, to the emerging Internet of Things. To innovate devices with better functionality and energy efficiency, researchers are constantly looking for better ways to make them, in particular from earth-abundant materials using eco-friendly processes...
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July 19, 2016,
Physics, Technology/Electronics
Associate Professor Yang Hyunsoo from the National University of Singapore, who led a research team to successfully embed a powerful magnetic memory chip on a plastic material, demonstrating the flexibility of the memory chip. Credit: National University of Singapore
This malleable memory chip is a breakthrough in the flexible electronics revolution, and brings researchers a step closer towards making flexible, wearable electronics a reality in the near future. It looks like a small piece of transparent film with tiny engravings on it, and is flexible enough to be bent into a tube. Yet, this piece of “smart” plastic demonstrates excellent performance in terms of data storage and processing capabilities.
Such devices have great potential in applications such as automotive, healthcare electr...
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June 13, 2016,
Physics, Technology/Electronics
Highly conductive ultrathin film on skin between clips. Credit: Sam Yoon/Korea University
An ultrathin film that is both transparent and highly conductive to electric current has been produced by a cheap and simple method devised by nanomaterials researchers from the Uni of Illinois at Chicago and Korea University. The film – actually a mat of tangled nanofiber, electroplated to form a “self-junctioned copper nano-chicken wire” – is also bendable and stretchable, offering potential applications in roll-up touchscreen displays, wearable electronics, flexible solar cells and electronic skin.
The new film establishes a “world-record combination of high transparency and low electrical resistance,” the latter at least 10X greater than the previous existing record, said Prof Sam Yoon, Korea Univ...
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