Newsletter February 2023 (2/2)
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ETH Domain News
February 23, 2023
 
 
 
The hot summer of 2022 caused historically low water levels throughout Switzerland. This was also the case at the Lower Lake Constance near Triboltingen in the canton of Thurgau. (Photograph: Keystone/Gian Ehrenzeller)
The complex interplay behind great heat
Many regions have suffered from heatwaves in recent years. But exactly how these form is still a matter of debate. Two researchers at ETH Zurich have now found a nuanced answer.

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In the event of a fire, plastic composite materials containing graphene nanoplatelets can leave behind residues. (Image: Empa)
Health risk of graphene residues investigated
Empa researchers have studied residues from the incineration of graphene-containing plastics. Conclusion of the study: Burned composite materials containing graphene nanoparticles can be considered harmless in case of acute exposure.

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Bioplastics produced from wastewater. (Photo: Antoine Brison, Eawag)
Producing bioplastics from wastewater
Wastewater treatment plants can do more than just treat wastewater. In the future, they should also recover resources. One approach that researchers at Eawag are pursuing, is the conversion of organic carbon contained in wastewater into bioplastics with the help of bacteria.

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Codable colors (R) reflected by the silver nanostuctures (L) developed in the Nanophotonics and Metrology Lab © NAM EPFL
Chromo-encryption method encodes secrets with color
In a new approach to security that unites technology and art, EPFL researchers have combined silver nanostructures with polarized light to yield a range of brilliant colors, which can be used to encode messages.

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In February 2021, Saharan dust gave a reddish tint to sky and snow. (Photo: M. Schneebeli / SLF)
Volunteers collect Saharan dust
When professional scientists and interested amateurs work together, it is a rewarding experience for both groups. Such cooperation can deliver important new insights, as shown by the results of a campaign to research winter Saharan dust events.

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Neutron Imaging at SINQ
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