Tech
In recent years, lead halide perovskites have emerged as promising materials for photovoltaics and light-emitting diodes (LEDs) due to their attractive optical and electrical properties, such as high photoluminescence (PL) quantum yield (QY), narrow emission spectrum, tuneable emission wavelength, high absorption coefficient, and long carrier diffusion length. Profound developments have been witnessed in the fields of solar cells, solid-state light-emitting diodes, photodetectors, and lasers.
A cheap, biocompatible white powder that luminesces when heated could be used for non-invasively monitoring the temperature of specific organs within the body. Tohoku University scientists conducted preliminary tests to demonstrate the applicability of this concept and published their findings in the journal Scientific Reports.
Over the last decade, artificial intelligence (AI) and its applications such as machine learning have gained pace to revolutionise many industries. As the world gathers more data, the computing power of hardware systems needs to grow in tandem. Unfortunately, we are facing a future where we will not be able to generate enough energy to power our computational needs.
A simulation system invented at MIT to train driverless cars creates a photorealistic world with infinite steering possibilities, helping the cars learn to navigate a host of worse-case scenarios before cruising down real streets.
Belying their slimy natures, the sticky patches of bacteria called biofilms often form intricate, starburst-like patterns as they grow. Now, researchers at Princeton University have combined expertise in molecular biology, mechanical engineering and mathematical modeling to unravel the physical processes underlying these curious crinkles.
Scientists are preparing a massive computer model of the coronavirus that they expect will give insight into how it infects in the body. They've taken the first steps, testing the first parts of the model and optimizing code on the Frontera supercomputer at the University of Texas at Austin's Texas Advanced Computing Center (TACC). The knowledge gained from the full model can help researchers design new drugs and vaccines to combat the coronavirus.
Fears that electric cars could actually increase carbon emissions are unfounded in almost all parts of the world, new research shows.
Media reports have regularly questioned whether electric cars are really "greener" once emissions from production and generating their electricity are taken into account.
But a new study by the universities of Exeter, Nijmegen and Cambridge has concluded that electric cars lead to lower carbon emissions overall, even if electricity generation still involves substantial amounts of fossil fuel.
A quantum internet could be used to send unhackable messages, improve the accuracy of GPS, and enable cloud-based quantum computing. For more than twenty years, dreams of creating such a quantum network have remained out of reach in large part because of the difficulty to send quantum signals across large distances without loss.
Around four in a thousand people worldwide suffer from schizophrenia, according to scientific estimates. The disease affects people from all walks of life, including Vincent van Gogh, the painter Agnes Martin, mathematician John Nash and Eduard Einstein, a son of the great physicist. The disease touches men and women equally.
The Arctic polar night is a time when the sun remains below the horizon for a full 24-hour cycle. It is dark, but not completely. Nevertheless, the lack of light has long led researchers to assume that the organisms that live through this dark period are mostly dormant.
For a decade, an international team of researchers has been exploring the polar night to see exactly how organisms survive in the dark.
In order to colonize other organs and grow into metastases, tumor cells that detach from the parent tumor need to manipulate their new microenvironment and create a 'metastatic niche'. Scientists from the German Cancer Research Center and the Heidelberg Institute for Stem Cell Technology and Experimental Medicine* have now discovered that some cancer cells stimulate connective tissue cells in their environment to release transmitters that promote metastasis. This discovery plays a key role in better understanding how these dangerous metastases arise.
Introverts take heart: When cells, like some people, get too squished, they can go into defense mode, even shutting down photosynthesis.
In a study published today, a team at the University of Colorado Boulder took advantage of a new microscopic technique to follow the lives of individual bacteria as they grew and divided in complex colonies.
Scientists have made a breakthrough in the development of a new generation of electronics that will require less power and generate less heat.
It involves exploiting the complex quantum properties of electrons - in this case, the spin state of electrons.
In a world first, the researchers - led by a team of physicists from the University of Leeds - have announced in the journal Science Advances that they have created a 'spin capacitor' that is able to generate and hold the spin state of electrons for a number of hours.
New research shows that fishes on either side of Niagara Falls--one of the most powerful waterfalls in the world--are unlikely to breed with one another. Knowing how well the falls serves as a barrier to fish movement is essential to conservation efforts to stop the spread of invasive aquatic species causing ecological destruction in the Great Lakes. The study is published today in the journal Molecular Ecology.
Scientists from the University of Sheffield use Peak District grassland to answer a globally important question
The team discovered how a large variety of plants are able to grow in one ecosystem when it is low in key nutrients
The findings show that plants are able to share nutrients, which could explain high levels of biodiversity in many ecosystems around the world
Scientists at the University of Sheffield have found that plants are able to co-exist because they share key nutrients, using grasslands from the Peak District.