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56 Current news about the topic arsenic

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Graphene heterostructures with black phosphorus, arsenic enable new infrared detectors

Sensors could replace any far-infrared and terahertz radiation detectors

16-Apr-2020

MIPT scientists and their colleagues from Japan and the U.S. have calculated the parameters of photodetectors comprised by layers of graphene and a combination of black phosphorus and black arsenic. These sensors are able to detect radiation with energy less than the band gap of the constituent ...

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Resolving the 'invisible' gold puzzle

Arsenic aids formation of giant gold deposits

03-May-2019

The Carlin-type gold deposits in Nevada, USA, are the origin of five percent of the global production and 75 percent of the US production of gold. In these deposits, gold does not occur in the form of nuggets or veins, but is hidden - together with arsenic - in pyrite, also known as 'fool's ...

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The holy grail of nanowire production

22-Feb-2019

Nanowires have the potential to revolutionize the technology around us. Measuring just 5-100 nanometers in diameter (a nanometer is a millionth of a millimeter), these tiny, needle-shaped crystalline structures can alter how electricity or light passes through them. They can emit, concentrate and ...

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Arsenic for Electronics

Covalently modified two-dimensional arsenic

17-Oct-2018

The discovery of graphene, a material made of one or very few atomic layers of carbon, started a boom. Today, such two-dimensional materials are no longer limited to carbon and are hot prospects for many applications, especially in microelectronics. In the journal Angewandte Chemie, scientists ...

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Don't Give the Slightest Chance to Toxic Elements in Medicinal Products

New high-accuracy reference solutions for the SI-traceable measurement

27-Mar-2018

Lead, cadmium, mercury, and arsenic do not belong in medicinal products. International requirements for the quality of medicines have therefore become more stringent and introduced new control requirements. Hence, it makes sense to use high-accuracy reference solutions with defined contents of ...

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Arsenic exposure in US public drinking water declines following new EPA regulations

24-Oct-2017

New research conducted at Columbia University's Mailman School of Public Health found that exposure to arsenic in drinking water was significantly reduced among Americans using public water systems following the Environmental Protection Agency (EPA) regulation on maximum levels of arsenic. ...

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Spinning electrons open the door to future hybrid electronics

04-Jul-2017

A discovery of how to control and transfer spinning electrons paves the way for novel hybrid devices that could outperform existing semiconductor electronics. In a study published in Nature Communications, researchers at Linkoping University in Sweden demonstrate how to combine a commonly used ...

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Potential approach to how radioactive elements could be 'fished out' of nuclear waste

14-Mar-2017

Manchester scientists have revealed how arsenic molecules might be used to 'fish out' the most toxic elements from radioactive nuclear waste - a breakthrough that could make the decommissioning industry even safer and more effective. Elizabeth Wildman, a PhD student in the research group led by ...

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An eco-friendly approach to reducing toxic arsenic in rice

10-Jun-2016

A team of researchers at the University of Delaware has found that incorporating rice husk to soil can decrease toxic inorganic arsenic levels in rice grain by 25 to 50 percent without negatively affecting yield. This research could have important implications for developing countries whose ...

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Tiny microbots that can clean up water

Self-propelled tiny ‘microbots’ that can remove pollution from contaminated water developed.

03-May-2016

Working with colleagues in Barcelona and Singapore, Samuel Sánchez’s group used graphene oxide to make their microscale motors, which are able to adsorb lead from industrial wastewater from a level of 1000 parts-per-billion to down to below 50 parts-per-billion in just an hour. The lead can ...

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