Category Chemistry/Nanotechnology

Dethroning Electrocatalysts for Hydrogen Production with Inexpensive Alternative Material

Dethroning Electrocatalysts for Hydrogen Production with Inexpensive Alternative Material

Today, we can say without a shadow of doubt that an alternative to fossil fuels is needed. Fossil fuels are not only non-renewable sources of energy but also among the leading causes of global warming and air pollution. Thus, many scientists worldwide have their hopes placed on what they regard as the fuel of tomorrow: hydrogen (H2). Although H2 is a clean fuel with incredibly high energy density, efficiently generating large amounts of it remains a difficult technical challenge.

Water splitting — the breaking of water molecules — is among the most explored methods to produce H2. While there are many ways to go about it, the best-performing water splitting techniques involve electrocatalysts made from expensive metals, such as platinum, ruthenium, and iridium...

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New Strategy for Efficient OLED Active Matrix Displays

The device architecture of organic permeable base light-emitting transistors (OPB-LET).

Researchers introduce a novel device concept towards high-efficient and low-voltage vertical organic lighting-emitting transistors. With the new device architecture and fabrication technology, the team paves the way for a broad application of efficient OLED active matrix displays.

In the group of Prof. Karl Leo, physicists, material scientists and engineers are working jointly on the development of novel organic materials and devices for high performance, flexible and possibly even biocompatible electronics and optoelectronics of the future. Increasing the performance of organic devices is one of the key challenges in their research. It was only last year, when the team headed by Dr...

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3D Printing Polymers

a super-soft, super-elastic crosslinked elastomer
From left: the unlinked polymer ink, infrared light being applied to activate the crosslinks, and the final product — a super-soft, super-elastic crosslinked elastomer.
Photo Credit: 
ISABELLE CHABINYC

The material yields soft, elastic objects that feel like human tissue. Researchers in the labs of Christopher Bates, an assistant professor of materials at UC Santa Barbara, and Michael Chabinyc, a professor of materials and chair of the department, have teamed to develop the first 3D-printable “bottlebrush” elastomer. The new material results in printed objects that have unusual softness and elasticity — mechanical properties that closely resemble those of human tissue.

Conventional elastomers, i.e. rubbers, are stiffer than many biological tissues...

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Discoveries at the Edge of the Periodic Table: First ever measurements of Einsteinium

Berkeley Lab scientists Jennifer Wacker (from left), Leticia Arnedo -Sanchez, Korey Carter, Katherine Shield work with radioactive samples under fume hoods in the chemistry lab of Rebecca Abergel. (Credit: Marilyn Sargent/Berkeley Lab)

Experiments scientists on this highly radioactive element reveal some unexpected properties. Since element 99 — einsteinium — was discovered in 1952 at the Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) from the debris of the first hydrogen bomb, scientists have performed very few experiments with it because it is so hard to create and is exceptionally radioactive...

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