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Guanidinium stabilizes perovskite solar cells at 19 percent efficiency

11-Dec-2017

With the power-conversion efficiency of silicon solar cells plateauing around 25%, perovskites are now ideally placed to become the market's next generation of photovoltaics. In particular, organic-inorganic lead halide perovskites offer manufacturing versatility that can potentially translate ...

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The quantum waltz of electrons hints at the next generation of chips

06-Dec-2017

A group of spintronics researchers at EPFL is using new materials to reveal more of the many capabilities of electrons. The field of spintronics seeks to tap the quantum properties of "spin," the term often used to describe one of the fundamental properties of elementary particles - in this case, ...

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The key to chemical transformations

30-Nov-2017

Chemist Xile Hu is the winner of the National Latsis Prize for 2017. Hu, a professor at the École Polytechnique Fédérale de Lausanne, was recognised for his outstanding scientific career and his original contributions to the fundamental understanding of catalysis. Catalysis is a field of ...

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Batteries with better performance and improved safety

28-Nov-2017

Phones, laptops, electric cars - batteries are everywhere. And to meet the expectations of today's consumers, these batteries are increasin­gly lighter, more powerful and designed to last longer. Currently the core technology for these applications is lithium ion batteries. But the technology is ...

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New batteries with better performance and improved safety

24-Nov-2017

Phones, laptops, electric cars - batteries are everywhere. And to meet the expectations of today's consumers, these batteries are increasingly light, more powerful and designed to last longer. Currently the most important technology for these applications is the lithium-ion battery technology: ...

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The stacked colour sensor

True colours meet minimization

17-Nov-2017

Red-sensitive, blue-sensitive and green-sensitive colour sensors stacked on top of each other instead of being lined up in a mosaic pattern - this principle could allow image sensors with unprecedented resolution and sensitivity to light to be created. However, up to now, the reality hasn't quite ...

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Liquid shock absorbers

10-Nov-2017

Remarkable liquid materials called colloids stiffen under impact. Researchers funded by the SNSF have studied the effect of powerful impacts such as those produced by firearms or micrometeorites. At first glance, colloids resemble homogeneous liquids such as milk or blood plasma. But in fact ...

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The world's shortest laser pulse

Observe the movement of electrons during chemical reactions in slow motion

02-Nov-2017

ETH researchers succeeded in shortening the pulse duration of an X‑ray laser to only 43 attoseconds. With a time resolution in the range of a few quintillionths of a second, they are now able for the first time to observe the movement of electrons during chemical reactions in slow motion. In ...

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Clariant again grows sales, increases profitability and is well on track to meet 2017 outlook

01-Nov-2017

Clariant announced nine months 2017 sales of CHF 4.698 billion, compared to CHF 4.299 billion in 2016. This corresponds to a 10 % growth in local currency driven by contributions from all Business Areas, with notable double-digit gains from Catalysis and Natural Resources. Organic sales rose by 6 ...

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Low-cost battery from waste graphite

13-Oct-2017

Lithium ion batteries are flammable and the price of the raw material is rising. Are there alternatives? Yes: Empa and ETH Zürich researchers have discovered promising approaches as to how we might produce batteries out waste graphite and scrap metal. Kostiantyn Kravchyk works in the group of ...

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