ScienceDaily.com: Nanotechnology News

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Nanotechnology news. From nanoscience to nanotechnology applications such as nanotechnology in medicine, read the latest news from leading research institutes.
Updated: 2 hours 45 min ago

The lightest shielding material in the world

Thu, 07/02/2020 - 19:37
Researchers have succeeded in applying aerogels to microelectronics: Aerogels based on cellulose nanofibers can effectively shield electromagnetic radiation over a wide frequency range - and they are unrivaled in terms of weight.
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Spintronics: Faster data processing through ultrashort electric pulses

Thu, 07/02/2020 - 18:05
Physicists have developed a simple concept that could improve significantly magnetic-based data processing. Using ultrashort electric pulses in the terahertz range, data can be written, read and erased very quickly. This would make data processing faster, more compact and energy efficient. The researchers confirmed their theory by running complex simulations.
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Charcoal a weapon to fight superoxide-induced disease, injury

Thu, 07/02/2020 - 18:05
Artificial enzymes made of treated charcoal could have the power to curtail damaging levels of superoxides, toxic radical oxygen ions that appear at high concentrations after an injury.
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Materials scientists drill down to vulnerabilities involved in human tooth decay

Wed, 07/01/2020 - 20:54
Researchers have cracked one of the secrets of tooth decay. The materials scientists are the first to identify a small number of impurity atoms in human enamel that may contribute to the material's strength but also make it more soluble. They also are the first to determine the spatial distribution of the impurities with atomic-scale resolution. The discovery could lead to a better understanding of human tooth decay as well as genetic conditions that affect enamel formation.
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Scientists use a Teflon pipe to make a cheap, simple reactor for silica particle synthesis

Wed, 07/01/2020 - 18:00
The synthesis of silica particles, used in bioimaging and drug delivery, could become considerably cheaper and more efficient by adopting a new flow synthesis method which involves a spiral channel and simple Teflon pipe to promote the rapid mixing of precursor fluids.
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Building a harder diamond

Wed, 07/01/2020 - 18:00
Scientists create a theoretical carbon-based material that would be even harder than diamond. This work may have industrial applications for cutting and polishing in place of current synthetic diamond.
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Removing toxic chemicals from water: New environmentally-friendly method

Tue, 06/30/2020 - 23:57
Researchers have developed a new environmentally friendly method for removing toxic chemicals from water. A newly invented machine, called the Matrix Assembly Cluster Source (MACS), has been used to design a breakthrough water treatment method using a solvent-free approach.
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Buzzing to rebuild broken bone

Tue, 06/30/2020 - 19:15
Healing broken bones could get easier with a device that provides both a scaffold for the bone to grow on and electrical stimulation to urge it forward, engineers report. Although minor bone breaks usually heal on their own, large fractures with shattered or missing chunks of bone are more difficult to repair. A biocompatible, dissolving polymer device can mimic the body's natural electrical field and help the cells regenerate.
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Spider silk can create lenses useful for biological imaging

Tue, 06/30/2020 - 19:14
Spider silk is useful for a variety of biomedical applications: It exhibits mechanical properties superior to synthetic fibers for tissue engineering, and it is not toxic or harmful to living cells. One unexpected application for spider silk is its use in the creation of biocompatible lenses for biological imaging applications. Researchers now describe the feasibility of creating lenses capitalizing on the properties of natural spider silk material.
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Cartwheeling light reveals new optical phenomenon

Tue, 06/30/2020 - 00:42
Researchers have discovered details about a novel type of polarized-light matter interaction with light that literally turns end over end as it propagates from a source.
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Spraying ethanol on nanofiber masks makes them reusable, study finds

Mon, 06/29/2020 - 20:02
Researchers evaluate the filtration efficiency of nanofiber and melt-blown filters when cleaned with ethanol.
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Producing a gaseous messenger molecule inside the body, on demand

Mon, 06/29/2020 - 20:02
Method could shed light on nitric oxide's role in the neural, circulatory, and immune systems.
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Researchers control elusive spin fluctuations in 2D magnets

Mon, 06/29/2020 - 20:01
A team developed a new imaging technique that is fast and sensitive enough to observe elusive critical fluctuations in two-dimensional magnets. This real-time imaging allows researchers to control the fluctuations and switch magnetism via a ''passive'' mechanism that could eventually lead to more energy-efficient magnetic storage devices.
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Physicists see surprisingly strong light, high heat from nanogaps between plasmonic electrodes

Mon, 06/29/2020 - 20:01
Physicists discover that plasmonic metals can be prompted to produce ''hot carriers'' that in turn emit unexpectedly bright light in nanoscale gaps between electrodes. The phenomenon could be useful for photocatalysis, quantum optics and optoelectronics.
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Process for 'two-faced' nanomaterials may aid energy, information tech

Fri, 06/26/2020 - 19:47
A team used a simple process to implant atoms precisely into the top layers of ultra-thin crystals, yielding two-sided structures with different chemical compositions. The resulting materials, known as Janus structures after the two-faced Roman god, may prove useful in developing energy and information technologies.
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Common food additive causes adverse health effects in mice

Fri, 06/26/2020 - 00:22
A common food additive, recently banned in France but allowed in the US and many other countries, was found to significantly alter gut microbiota in mice, causing inflammation in the colon and changes in protein expression in the liver, according to new research.
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New boron-lanthanide nanostructure

Thu, 06/25/2020 - 22:07
A newly discovered nanocluster has a geometry that ''has not been observed in chemistry heretofore,'' the researchers say.
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New insights into the energy levels in quantum dots

Thu, 06/25/2020 - 18:25
Researchers have gained new insights into the energy states of quantum dots. They are semiconductor nanostructures and promising building blocks for quantum communication. With their experiments, the scientists confirmed certain energy transitions in quantum dots that had previously only been predicted theoretically: the so-called radiative Auger process.
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AI could help improve performance of lithium-ion batteries and fuel cells

Thu, 06/25/2020 - 16:09
Researchers have demonstrated how machine learning could help design lithium-ion batteries and fuel cells with better performance.
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Laser allows solid-state refrigeration of a semiconductor material

Wed, 06/24/2020 - 02:52
A team used an infrared laser to cool a solid semiconductor by at least 20 degrees C, or 36 F, below room temperature.
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