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Tag Archives: Graphene

Smoothing out the wrinkles in graphene

The image on the right shows a graphene sheet coated with wax during the substrate-transfer step. This method drastically reduced wrinkles on the graphene’s surface compared to a traditional polymer coating (left). Courtesy of the researchers Smoothing out the wrinkles ...

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Exotic Electronics

MIT researchers have devised a way to grow a single crystalline compound semiconductor on its substrate through two-dimensional materials. The compound semiconductor thin film is then exfoliated by a flexible substrate, showing the rainbow color that comes from thin film ...

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New nanowires are just a few atoms thick

A slight mismatch between the hexagonal structures of molybdenum disulfide and tungsten diselenide creates a strain that can be released by the formation of a “5|7 dislocation,” in which two hexagons collapse to form a pentagon and a heptagon. Reactions ...

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Transparent, flexible solar cells

A new flexible graphene solar cell developed at MIT is seen in the transparent region at the center of this sample. Around its edges are metal contacts on which probes can be attached during tests of device performance. Photo: Stuart ...

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Graphene holds up under high pressure

On the left, an atomic-force microscopy image shows a nanoporous graphene membrane after a burst test at 100 bars. The image shows that failed micromembranes (the dark black areas) are aligned with wrinkles in the graphene. On the right, two ...

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Not stuck on silicon

(Left to right): Postdoc Kyusang Lee, Professor Jeehwan Kim (sitting), and graduate students Samuel Cruz and Yunjo Kim. Photo: Jose-Luis Olivares/MIT Click for a full size image   Not stuck on silicon Engineers use graphene as a “copy machine” to ...

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Graphene could revolutionize the internet of things

Graphene could revolutionize the internet of things EPFL researchers have produced a tunable, graphene-based device that could significantly increase the speed and efficiency of wireless communication systems. Their system works at very high frequencies, delivering unprecedented results. Wireless communications come ...

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Du graphène pour booster les télécommunications

Du graphène pour booster les télécommunications 06.04.16 – Un microprocesseur qui filtre le rayonnement indésirable à l’aide de graphène a été développé par des scientifiques de l’EPFL et testé par des chercheurs de l’Université de Genève (UNIGE). L’invention pourrait être ...

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