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Current issue

ELEKTRO 2/2019 was released on February 13th 2019. Its digital version will be available on March 11th 2019.

Topic: Electrical appliances – switching, protective, signalling and special

Main Article
Advanced power converter topology
Smart Cities (part 7)

SVĚTLO (Light) 1/2019 was released on February 4th 2019. Its digital version will be available on March 5th 2019.

Fairs and exhibitions
Invitation at LIGHT IN ARCHITECTURE exhibition
Prolight + Sound 2019: keep up with time
The light at For Arch 2018 fair

Public lighting
Lights of towns and communities 2018 – the meeting at the round table

A way to cause graphene to self-fold into 3-D shapes

09.10.2017 | Phys.org | www.phys.org

A team of researchers with Johns Hopkins University and MIT has found a way to cause flat sheets of graphene to self-fold into 3-D geometric shapes.

One of the main benefits of the new approach is that it preserves the intrinsic properties of the graphene, which has been the goal all along—after all, what is the point of using graphene in the first place if you have to diminish its unique attributes to make it conform to a desired shape? Another benefit is that the creases can cause a band gap in the graphene, which graphene notoriously lacks in its natural state.

3-D graphen

The team notes that the technique is also compatible with traditional lithography and can be applied at the wafer scale. Also, it is highly parallel, which means it should not present manufacturing problems. They also report that they tested their technique by creating 3-D shapes that were used to hold living cells and nonlinear resistors.

Read more at Phys.org

Image Credit: Weinan Xu, Johns Hopkins University

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