The electron slow motion: How do different materials react to the impact of ions?

Femtosecond journey through graphene

23-Aug-2022 - When ions penetrate a material, highly complex processes take place - so fast that they could hardly be analyzed until now. But sophisticated measurements have now made it possible. How do different materials react to the impact of ions? This is a question that plays an important role in many ...

An improved wearable, stretchable gas sensor using nanocomposites

Ultrasensitive nitrogen dioxide gas sensor may find applications in real-time environmental monitoring or the healthcare industry

01-Sep-2020 - A stretchable, wearable gas sensor for environmental sensing has been developed and tested by researchers at Penn State, Northeastern University and five universities in China. The sensor combines a newly developed laser-induced graphene foam material with a unique form of molybdenum disulfide ...

Watching two-dimensional materials grow

30-Aug-2018 - Atomically thin crystals will play an ever greater role in future – but how can their crystallisation process be controlled? A new method is now opening up new possibilities. They are among the thinnest structures on earth: “two dimensional materials” are crystals which consist of only one or a ...

New test opens path for better 2-D catalysts

09-Oct-2017 - Rice University researchers have taken a deep look into atom-thick catalysts that produce hydrogen to see precisely where it's coming from. Their findings could accelerate the development of 2-D materials for energy applications, such as fuel cells. The Rice lab of materials scientist Jun Lou, ...

New insights into promising semiconductor material

12-Sep-2017 - Researchers from the National University of Singapore (NUS) have established new findings on the properties of two-dimensional molybdenum disulfide (MoS2), a widely studied semiconductor of the future. In two separate studies led by Professor Andrew Wee and Assistant Professor Andrivo Rusydi from ...

2017 WITec Paper Award for Outstanding Scientific Publications

29-Jun-2017 - From nearly 60 submissions for the 2017 WITec Paper Award, our jury selected the three best publications. They were written by scientists from Ireland, Portugal and Germany who used WITec correlative confocal Raman microscopes to study transition metal dichalcogenides, textile fibers and cement. ...

Explaining how 2-D materials break at the atomic level

23-Jan-2017 - Cracks sank the 'unsinkable' Titanic; decrease the performance of touchscreens and erode teeth. We are familiar with cracks in big or small three-dimensional (3D) objects, but how do thin two-dimensional (2D) materials crack? 2D materials, like molybdenum disulfide (MoS2), have emerged as an ...

World's thinnest lens to revolutionize cameras

15-Mar-2016 - Scientists have created the world's thinnest lens, one two-thousandth the thickness of a human hair, opening the door to flexible computer displays and a revolution in miniature cameras. Lead researcher Dr Yuerui (Larry) Lu from The Australian National University (ANU) said the discovery hinged ...

SLAC's ultrafast 'electron camera' visualizes ripples in 2-D material

14-Sep-2015 - Research led by scientists from the Department of Energy's SLAC National Accelerator Laboratory and Stanford University shows how individual atoms move in trillionths of a second to form wrinkles on a three-atom-thick material. Revealed by a brand new "electron camera," one of the world's ...

Surprising discoveries about 2-D molybdenum disulfide

Berkeley Lab researchers use campanile probe on promising semiconductor

18-Aug-2015 - Scientists with the U.S. Department of Energy (DOE)'s Lawrence Berkeley National Laboratory (Berkeley Lab) have used a nano-optical probe to study the effects of illumination on two-dimensional semiconductors at the molecular level. Working at the Molecular Foundry, a DOE Office of Science User ...