https://phys.org/nanotech-news/ en-us Nanotechnology. The latest news on nanoscience, nanoelectronics, science and technology. Updated Daily. Plastic waste breaks down over time into nanoplastics ( https://phys.org/news/2023-10-safely-nanoplastics-prussian-blue-pigment.html Nanomaterials Fri, 20 Oct 2023 11:58:15 EDT news617021892 It has long been known that people can form defenses and thus antibodies against viruses. But antibodies can also develop against polyethylene glycol (PEG), a substance used in cosmetics, food and medicine. These influence the effectiveness of drugs. https://phys.org/news/2023-10-nanocarriers-antibodies-polyethylene-glycol-german.html Bio & Medicine Fri, 20 Oct 2023 11:07:08 EDT news617018825 Graphene is well-known for its high electrical conductivity, mechanical strength, and flexibility. Stacking two layers of graphene with atomic layer thickness produces bilayer graphene, which possesses excellent electrical, mechanical, and optical properties. As such, bilayer graphene has attracted significant attention and is being utilized in a host of next-generation devices, including quantum computers. https://phys.org/news/2023-10-high-speed-electrical-readout-method-graphene.html Nanophysics Nanomaterials Fri, 20 Oct 2023 09:17:55 EDT news617012271 A team of researchers at The University of Texas MD Anderson Cancer Center has developed a new method for using extracellular vesicles to enhance responses to immunotherapy in glioblastoma, potentially opening the door for wider use of engineered messenger RNA (mRNA) for cancer therapy. The study was published today in Nature Communications. https://phys.org/news/2023-10-mrna-extracellular-vesicles-immunotherapy-response.html Bio & Medicine Thu, 19 Oct 2023 16:55:49 EDT news616953346 In recent years, self-powered electrochromic (EC) devices have shown significant potential in various fields such as optoelectronics, sensors, and security systems. These self-powered EC systems, capable of reversible color switching without external power sources, have garnered considerable interest for next-generation electronic devices. https://phys.org/news/2023-10-self-powered-flexible-multicolor-electrochromic-devices.html Nanomaterials Thu, 19 Oct 2023 16:53:03 EDT news616953181 Enzyodynamic therapy (EDT) is a new type of reactive oxygen species (ROS)-related dynamic therapeutic modality, which adequately utilizes the enzyme-triggered catalytic reactions in living organisms and achieves disease treatment through controlling the generation or elimination of ROS. ROS refers to a highly active chemical substance containing oxygen free radicals in the body or natural environment. ROS at physiological concentration is beneficial for the development of living organisms. https://phys.org/news/2023-10-enzyodynamic-therapy-nanoscale.html Bio & Medicine Nanomaterials Thu, 19 Oct 2023 16:39:03 EDT news616952341 As a combustible fuel, the burning of hydrogen gas does not contribute to global warming. Today, the majority of hydrogen gas is generated from fossil fuels, however, and this process releases greenhouse gases into the atmosphere. Generating hydrogen gas from clean sources, such as the splitting of water molecules with electricity through electrolysis, is important to achieving future carbon neutrality, but current methods are inefficient and limit the commercial practicality of hydrogen-based technologies. https://phys.org/news/2023-10-noble-metal-free-electrocatalyst-decreases-energy-required.html Nanomaterials Thu, 19 Oct 2023 11:04:03 EDT news616932241 An international team of scientists has recently developed a novel type of nano engine made of DNA. It is driven by a clever mechanism and can perform pulsing movements. The researchers are now planning to fit it with a coupling and install it as a drive in complex nano machines. Their results have been published in the journal Nature Nanotechnology. https://phys.org/news/2023-10-international-team-dna-nano.html Bio & Medicine Thu, 19 Oct 2023 11:00:01 EDT news616926184 In the latest stride toward combating neovascular age-related macular degeneration (nAMD), a team led by Professor Nathan Gianneschi from the International Institute for Nanotechnology at Northwestern University has unveiled a novel approach that could transform patients' lives worldwide. https://phys.org/news/2023-10-protein-like-polymers-illuminate-path-macular.html Bio & Medicine Thu, 19 Oct 2023 08:28:55 EDT news616922932 Special nanoparticles could one day improve modern imaging techniques. Developed by researchers at Martin Luther University Halle-Wittenberg (MLU), the properties of these unique nanoparticles change in reaction to heat. When combined with an integrated dye, the particles may be used in photoacoustic imaging to produce high-resolution, three-dimensional internal images of the human body, the team reports in the journal Chemical Communications. https://phys.org/news/2023-10-scientists-nanoparticles-contrast-agents.html Bio & Medicine Nanomaterials Wed, 18 Oct 2023 16:15:02 EDT news616864501 Researchers have shown how the principles of rogue waves—huge 30-meter waves that arise unexpectedly in the ocean—can be applied on a nano scale, with dozens of applications from medicine to manufacturing. https://phys.org/news/2023-10-rogue-scientists-giant-mechanics-nanometric.html Nanophysics Wed, 18 Oct 2023 16:00:00 EDT news616863596 A research team led by Prof. Cao Hongtao at the Ningbo Institute of Materials Technology and Engineering of the Chinese Academy of Sciences, in cooperation with Prof. Zhang Haizhong's group from Fuzhou University, has developed a novel bioinspired vision sensor based on InP quantum dots (QDs)/oxide thin-film phototransistors. https://phys.org/news/2023-10-scientists-thin-phototransistor-bioinspired-visual.html Nanophysics Nanomaterials Wed, 18 Oct 2023 12:58:02 EDT news616852681 Particle accelerators are crucial tools in a wide variety of areas in industry, research and the medical sector. The space these machines require ranges from a few square meters to large research centers. Using lasers to accelerate electrons within a photonic nanostructure constitutes a microscopic alternative with the potential of generating significantly lower costs and making devices considerably less bulky. https://phys.org/news/2023-10-physics-milestone-miniature-particle.html Nanophysics Wed, 18 Oct 2023 12:26:07 EDT news616850762 Ordinary pencil lead holds extraordinary properties when shaved down to layers as thin as an atom. A single, atom-thin sheet of graphite, known as graphene, is just a tiny fraction of the width of a human hair. Under a microscope, the material resembles a chicken-wire of carbon atoms linked in a hexagonal lattice. https://phys.org/news/2023-10-five-layer-graphene-sandwich-rare-electronic.html Nanophysics Nanomaterials Wed, 18 Oct 2023 11:00:02 EDT news616836772 Engineers at the University of California San Diego have developed an experimental vaccine that could prevent the spread of metastatic cancers to the lungs. The key ingredients of the vaccine are nanoparticles—fashioned from bacterial viruses—that have been engineered to target a protein known to play a central role in cancer growth and spread. https://phys.org/news/2023-10-nanoparticle-vaccine-curb-cancer-metastasis.html Bio & Medicine Wed, 18 Oct 2023 10:39:28 EDT news616844365 Since its initial discovery in 2004 by two professors at the University of Manchester, graphene has made a big splash in the scientific community. Its discoverers won a Nobel Prize in 2010 for developing the idea—then the race was on to find ways to produce and apply it. Roop Mahajan, the Lewis A. Hester Professor in Mechanical Engineering at Virginia Tech, has contributed a significant step forward in that race. https://phys.org/news/2023-10-mechanical-professor-coal-graphene.html Nanomaterials Wed, 18 Oct 2023 10:39:25 EDT news616844361 Roman Engel-Herbert, Director of PDI, and Joao Marcelo J. Lopes, a Senior Scientist at PDI, were honored recently with an invitation to review the field of two-dimensional layered materials (2DLM) in a paper for ACS Nano titled "Recent Advances in 2D Material Theory, Synthesis, Properties, and Applications." PDI's authors drew from their expertise in the field of 2D magnetic materials and heterostructures to provide insights on the current state and future prospects of the field regarding the synthesis of these materials. https://phys.org/news/2023-10-insights-2d-materials-international-collaboration.html Nanomaterials Tue, 17 Oct 2023 14:23:09 EDT news616771387 Recent studies have found that Gires-Tournois (GT) biosensors, a type of nanophotonic resonator, can detect minuscule virus particles and produce colorful micrographs (images taken through a microscope) of viral loads. But they suffer from visual artifacts and non-reproducibility, limiting their utilization. https://phys.org/news/2023-10-scientists-deep-learning-based-biosensing-platform.html Bio & Medicine Nanomaterials Tue, 17 Oct 2023 11:37:01 EDT news616761418 Formed by the coupling effect of contact electrification and electrostatic induction, triboelectric nanogenerators (TENG) effectively convert the most widely distributed micro-nano energy in our environment, including human motion, breeze, vibration, and rainfall, into electrical energy, providing a sustainable solution to power a plethora of sensors that the current battery supply failed to address. https://phys.org/news/2023-10-tribotronics-prospects-functional-devices-self-powered.html Nanophysics Nanomaterials Tue, 17 Oct 2023 11:02:03 EDT news616759321 Wave energy technology is a proven source of power generation, but there is power inherent in every molecule of liquid on Earth, even when the liquid is at rest. At the molecular scale, atoms and ions are always moving. If this nanoscale movement can be harvested, it could be a big source of energy. https://phys.org/news/2023-10-harnessing-molecular-power-electricity-generation.html Nanophysics Nanomaterials Tue, 17 Oct 2023 11:00:01 EDT news616752318 Nanozymes are synthetic materials that mimic the properties of natural enzymes for applications in biomedicine and chemical engineering. Historically, they are generally considered too toxic and expensive for use in agriculture and food science. Now, researchers from the University of Illinois Urbana-Champaign have developed a nanozyme that is organic, non-toxic, environmentally friendly, and cost effective. https://phys.org/news/2023-10-nanozymes-suitable-agricultural.html Bio & Medicine Mon, 16 Oct 2023 17:17:03 EDT news616695421 Messenger RNA (mRNA) vaccines are revolutionizing the therapy of cancer. They can be flexibly developed in a short period of time, allowing transient expression of multiple antigens for safe and efficient immunization. A diversity of mRNA vaccines is being explored in clinic to benefit patients with cancer. https://phys.org/news/2023-10-rational-mrna-nanovaccine-cancer-immunotherapy.html Bio & Medicine Mon, 16 Oct 2023 16:57:19 EDT news616694237 A technique developed by University of Texas at Dallas and UT Southwestern Medical Center researchers to deliver medication through the blood-brain barrier has shown promise in a preclinical study for treating glioblastoma, the most common human brain cancer. https://phys.org/news/2023-10-drug-delivery-technique-vessel-targeted-gold-nanoparticles.html Bio & Medicine Mon, 16 Oct 2023 11:53:03 EDT news616675981 New research from Flinders University and UNSW Sydney, published in the ACS Nano journal, explores switchable polarization in a new class of silicon compatible metal oxides and paves the way for the development of advanced devices including high-density data storage, ultra low energy electronics, flexible energy harvesting and wearable devices. https://phys.org/news/2023-10-approach-advanced-electronics-storage-ferroelectricity.html Nanophysics Nanomaterials Mon, 16 Oct 2023 10:50:02 EDT news616672201 Researchers from Tokyo Metropolitan University have engineered a range of new single-walled transition metal dichalcogenide (TMD) nanotubes with different compositions, chirality, and diameters by templating off boron-nitride nanotubes. They also realized ultra-thin nanotubes grown inside the template, and successfully tailored compositions to create a family of new nanotubes. The ability to synthesize a diverse range of structures offers unique insights into their growth mechanism and novel optical properties. https://phys.org/news/2023-10-carbon-nanotube-family-bigger.html Nanomaterials Mon, 16 Oct 2023 09:49:22 EDT news616668560 A joint research team led by Prof. Dai Qing and Prof. Li Chi from the National Center for Nanoscience and Technology (NCNST) of the Chinese Academy of Sciences (CAS) has demonstrated the coherent ultrafast photoemission from a single quantized energy level of a carbon nanotube. The study was published in Science Advances on Oct. 12. https://phys.org/news/2023-10-team-coherent-ultrafast-photoemission-carbon.html Nanophysics Nanomaterials Mon, 16 Oct 2023 09:36:03 EDT news616667761 Lanthanide (Ln3+)-doped photon avalanche (PA) upconversion nanoparticles (UCNPs) can be applied in super-resolution bioimaging, miniaturized lasers, single-molecule tracking and quantum optics. https://phys.org/news/2023-10-lanthanide-doped-kmgf-upconversion-nanoparticles-photon.html Nanophysics Nanomaterials Fri, 13 Oct 2023 09:07:39 EDT news616406857 When Jedi Knights need to vanquish an enemy, they whip out their trusty lightsabers. In the future, thanks to Johns Hopkins researchers, doctors seeking to crush cancer may wield minuscule molecular nanoSABERs that allow them to look at tumors in ways never before possible. https://phys.org/news/2023-10-tiny-nanosabers-aid-cancer.html Bio & Medicine Thu, 12 Oct 2023 15:43:03 EDT news616344181 In a surprising new study, researchers at the University of Minnesota Twin Cities have found that the electron beam radiation that they previously thought degraded crystals can actually repair cracks in these nanostructures. https://phys.org/news/2023-10-discovery-electron-nanostructures.html Nanophysics Nanomaterials Thu, 12 Oct 2023 11:01:11 EDT news616327269 As you watch Morpho butterflies wobble in flight, shimmering in vivid blue color, you're witnessing an uncommon form of structural color that researchers are only beginning to use in lighting technologies such as optical diffusers. Furthermore, imparting a self-cleaning capability to such diffusers would minimize soiling and staining and maximize practical utility. https://phys.org/news/2023-10-morpho-butterfly-nanostructure-technology-bright.html Nanophysics Nanomaterials Thu, 12 Oct 2023 09:46:02 EDT news616322760