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: 14 weeks 3 days ago

Designing DNA from scratch: Engineering the functions of micrometer-sized DNA droplets

Wed, 07/15/2020 - 21:12
Scientists have constructed ''DNA droplets'' comprising designed DNA nanostructures. The droplets exhibit dynamic functions such as fusion, fission, Janus-shape formation, and protein capture. Their technique is expected to be applicable to a wide variety of biomaterials, opening doors to many promising applications in materials design, drug delivery, and even artificial cell-like molecular systems.
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New material mimics strength, toughness of mother of pearl

Wed, 07/15/2020 - 20:31
In the summer, many people enjoy walks along the beach looking for seashells. Among the most prized are those that contain iridescent mother of pearl (also known as nacre) inside. But many beachcombers would be surprised to learn that shimmery nacre is one of nature's strongest, most resilient materials. Now, researchers have made a material with interlocked mineral layers that resembles nacre and is stronger and tougher than previous mimics.
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New promising treatment uses smart nanoparticles to target lung cancer

Wed, 07/15/2020 - 20:31
A new and promising approach for treatment of lung cancer has been developed. The treatment combines a novel surgical approach with smart nanoparticles to specifically target lung tumors.
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Low-cost catalyst helps turn seawater into fuel at scale

Wed, 07/15/2020 - 20:31
The Navy's quest to power its ships by converting seawater into fuel is one step nearer fruition. Chemical engineers have demonstrated that a potassium-promoted molybdenum carbide catalyst efficiently and reliably converts carbon dioxide to carbon monoxide, a critical step in the process.
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Higher-order topology found in 2D crystal

Wed, 07/15/2020 - 19:14
The research team took a new approach by using the Josephson junctions to spatially resolve the supercurrent flow and to show that WTe2 does indeed appear to have hinge states and be a higher-order topological insulator. They have identified a new higher-order topological insulator. It is a layered two-dimensional transition metal dichalcogenide (TMDC) called WTe2. This is a famous material in condensed matter physics that displays a variety of exotic properties from titanic magnetoresistance to quantized spin hall effect.
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A nanomaterial path forward for COVID-19 vaccine development

Wed, 07/15/2020 - 17:55
From mRNA vaccines entering clinical trials, to peptide-based vaccines and using molecular farming to scale vaccine production, the COVID-19 pandemic is pushing new and emerging nanotechnologies into the frontlines and the headlines. Nanoengineers detail the current approaches to COVID-19 vaccine development, and highlight how nanotechnology has enabled these advances, in a review article.
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New lithium battery charges faster, reduces risk of device explosions

Wed, 07/15/2020 - 02:21
Cell phone batteries often heat up and, at times, can burst into flames. In most cases, the culprit behind such incidents can be traced back to lithium batteries. Despite providing long-lasting electric currents that can keep devices powered up, lithium batteries can internally short circuit, heating up the device.
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Particulate plutonium released from the Fukushima Daiichi meltdowns

Tue, 07/14/2020 - 18:12
Small amounts of plutonium (Pu) were released from the damaged Fukushima Daiichi Nuclear Power Plant (FDNPP) reactors into the environment during the site's 2011 nuclear disaster. However, the physical, chemical, and isotopic form of the released Pu has remained unknown. Now, recent work has shown that Pu was included inside cesium-rich microparticles (CsMPs) that were emitted from the site.
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Nano-radiomics unveils treatment effect on tumor microenvironment

Mon, 07/13/2020 - 23:49
Researchers have developed a novel noninvasive approach called nano-radiomics that analyzes imaging data to assess changes in the tumor microenvironment that are not detected with conventional imaging methods.
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Lasers etch an efficient way to address global water crisis

Mon, 07/13/2020 - 23:49
Researchers use sunlight and a laser-etched metal surface to evaporate and purify water for safe drinking at greater than 100 percent efficiency. The method could help relieve water shortages in drought-stricken areas and be helpful in water desalinization projects.
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Invention: 'Nanocage' tool untangles (molecular) spaghetti

Fri, 07/10/2020 - 21:15
Scientists have invented a new tool -- they call it a ''nanocage'' -- that can catch and straighten out molecule-sized tangles of polymers - -whether made of protein or plastic. This tool -- that works a bit like pulling a wad of thread through a needle hole -- opens a new way to create custom materials that have never been made before.
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Microscopy technique reveals nanoscale detail of coatings as they dry

Fri, 07/10/2020 - 20:18
Thin film coatings do more than add color to walls. For example, they can be used as pharmaceutical devices. How these coatings dry can change their properties, which is especially important for films used in drug delivery. Engineering researchers studying the in situ drying behavior of thin film coatings are visualizing particle interactions with groundbreaking precision. Their findings could impact the development of drug delivery technology.
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Robust high-performance data storage through magnetic anisotropy

Fri, 07/10/2020 - 19:21
A technologically relevant material for HAMR data memories are thin films of iron-platinum nanograins. An international team has now observed experimentally for the first time how a special spin-lattice interaction in these iron-platinum thin films cancels out the thermal expansion of the crystal lattice.
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Magnetic memory states go exponential

Fri, 07/10/2020 - 01:28
Researchers showed that relatively simple structures can support exponential number of magnetic states -- much greater than previously thought -- and demonstrated switching between the states by generating spin currents. The ability to stabilize and control exponential number of discrete magnetic states in a relatively simple structure constitutes a major contribution to spintronics and may pave the way to multi-level magnetic memory with extremely large number of states per cell, be used for neuromorphic computing, and more.
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Fluorescent peptide nanoparticles, in every color of the rainbow

Wed, 07/08/2020 - 19:00
The discovery of green fluorescent protein (GFP), which is made by a jellyfish, transformed cell biology. It allowed scientists to stitch the GFP sequence to proteins from other organisms to trace their movements and interactions in living cells. Now, researchers have designed peptide nanoparticles that can each glow in a variety of colors, opening the door for many new biomedical applications.
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Old X-rays, new vision: A nano-focused X-ray laser

Wed, 07/08/2020 - 19:00
Researchers have focused the beam of an X-ray free-electron laser to 6 nanometers, closer to the diameter of a typical atom than obtained in prior work. In conjunction with the extremely brief pulses and high intensities of the laser, researchers can now study matter at extremely high resolution and unprecedented speed.
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Purifying water with the help of wood, bacteria and the sun

Wed, 07/08/2020 - 18:59
According to the United Nations, about one-fifth of the world's population lives in areas where water is scarce. Therefore, technologies to produce clean water from undrinkable sources, such as seawater, river or lake water, and contaminated water, are urgently needed. Now, researchers have developed a wood-based steam generator that, with the help of bacterial-produced nanomaterials, harnesses solar energy to purify water.
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Custom nanoparticle regresses tumors when exposed to light

Wed, 07/08/2020 - 00:01
A unique nanoparticle to deliver a localized cancer treatment inhibits tumor growth in mice, according to researchers.
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Shock-dissipating fractal cubes could forge high-tech armor

Tue, 07/07/2020 - 22:09
3D printed cubes,with intricate fractal voids efficiently dissipate shockwaves, potentially leading to new types of lightweight armor and materials to better withstand explosions and impacts.
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Scientists create new device to light up the way for quantum technologies

Tue, 07/07/2020 - 19:33
Researchers have created an innovative new device that will emit single particles of light, or photons, from quantum dots that are the key to practical quantum computers, quantum communications, and other quantum devices.
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