graphene nanosheets tagged posts

A Better Pen-and-Ink system for Drawing Flexible Circuits

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A pen containing conductive ink can draw circuits on a variety of surfaces — even a loofah (seen here).
Credit: Adapted from ACS Applied Electronic Materials 2020, DOI: 10.1021/acsaelm.0c00866

Conductive ink is a great tool for printing flexible electronic circuits on surfaces. But these inks can be costly, they do not work on some materials, and devices to apply them can plug up. Now, scientists report in ACS Applied Electronic Materials that they have developed inexpensive conductive inks for clog-free ballpoint pens that can allow users to “write” circuits almost anywhere — even on human skin.

Flexible electronics are widely used in applications such as biosensors, electronic skin and energy storage...

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Major Breakthrough in Smart Printed Electronics

Prof Jonathan Coleman and team have fabricated printed transistors consisting entirely of 2-dimensional nanomaterials for the first time. Credit: AMBER, Trinity College Dublin

Prof Jonathan Coleman and team have fabricated printed transistors consisting entirely of 2-dimensional nanomaterials for the first time. Credit: AMBER, Trinity College Dublin

Researchers in AMBER, the Science Foundation Ireland-funded materials science research centre hosted in Trinity College Dublin, have fabricated printed transistors consisting entirely of 2D nanomaterials for the first time. These 2D materials combine exciting electronic properties with the potential for low-cost production. This breakthrough could unlock the potential for applications such as food packaging that displays a digital countdown to warn you of spoiling, wine labels that alert you when your white wine is at its optimum temperature, or even a window pane that shows the day’s forecast.

This discovery opens t...

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