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Current issue

ELEKTRO 5/2018 was released on May 16th 2018. Its digital version will be available on June 6th 2018.

Topic: Lightning and overvoltage protection; EFS, EPS; ELO SYS 2018

Main Article
Energy router and its role in smart grids
Smart Cities (part 2 – volume 1)

SVĚTLO (Light) 2/2018 was released on March 16th 2018. Its digital version will be available immediately.

Fairs and exhibitions
Interior elite again after year in Letňany

Luminaires and luminous apparatuses
Emergency lighting
The future of industrial lighting has name INNOVA
GOLY luminaire – the practical high bay luminaire
McLED® – brand name of first rate quality LED lighting
VOLGA EU luminaire our choice for Europe

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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