Сборщик RSS-лент

Ion irradiation offers promise for 2D material probing

Physorg.com - 17 мая, 2024 - 20:10
Two-dimensional materials such as graphene promise to form the basis of incredibly small and fast technologies, but this requires a detailed understanding of their electronic properties. New research demonstrates that fast electronic processes can be probed by irradiating the materials with ions first.
Категории: Nano planet

Study shows optical excitation of hot carriers enables ultrafast dynamic control of nanoscale plasmons

Physorg.com - 17 мая, 2024 - 20:09
Photonic computing, storage, and communication are the foundation for future photonic chips and all-optical neural networks. Nanoscale plasmons, with their ultrafast response speed and ultrasmall mode volume, play an important role in the integration of photonic chips. However, due to the limitations of materials and fundamental principles in many previous systems, they are often incompatible with existing optoelectronics, and their stability and operability are greatly compromised.
Категории: Nano planet

Using DNA origami, researchers create diamond lattice for future semiconductors of visible light

Physorg.com - 17 мая, 2024 - 18:22
The shimmering of butterfly wings in bright colors does not emerge from pigments. Rather, photonic crystals are responsible for the play of colors. Their periodic nanostructure allows light at certain wavelengths to pass through while reflecting other wavelengths. This causes the wing scales, which are in fact transparent, to appear so magnificently colored.
Категории: Nano planet

Bifunctional CoFeP-N nanowires synthesized for sustainable water splitting

Physorg.com - 16 мая, 2024 - 20:15
Prof. Wang Qi's research group from the Hefei Institutes of Physical Science of the Chinese Academy of Sciences has synthesized iron- and nitrogen-co-doped CoFeP-N nanowires for high-efficiency electrocatalytic water splitting.
Категории: Nano planet

Nanocarriers loaded with DNA relieve back pain, repairs damaged disk in mice

Physorg.com - 16 мая, 2024 - 19:12
Disk-related back pain may one day meet its therapeutic match: Gene therapy delivered by naturally derived nanocarriers that, a new study shows, repairs damaged disks in the spine and lowers pain symptoms in mice.
Категории: Nano planet

Low-temperature pulse irradiation technique enables flexible optoelectronic devices

Physorg.com - 16 мая, 2024 - 18:37
The synthesis of metallic inorganic compound thin films typically requires high-temperature processes, which hampers their applications on flexible substrates. Recently, a research team at City University of Hong Kong (CityUHK) developed a pulse irradiation technique that synthesizes a variety of thin films in an extremely short time under ultra-low temperature.
Категории: Nano planet

Nanobubble research to improve green hydrogen production

Physorg.com - 16 мая, 2024 - 18:35
In a novel study, published in Proceedings of the National Academy of Sciences, researchers from the University of Twente have made significant strides in understanding the behavior of micro- and nanobubbles on electrodes during water electrolysis. This process is crucial for (green) hydrogen production. These tiny bubbles form on the electrodes, blocking the flow of electricity and reducing the efficiency of the reaction.
Категории: Nano planet

A golden layer unlocks sharper imaging and faster scanning with X-rays

Physorg.com - 16 мая, 2024 - 11:00
Scientists have made a breakthrough in significantly improving the sharpness of X-ray imaging and potentially boosting the speeds at which X-ray scans can be processed. This lays the groundwork for both better medical imaging and faster security clearance.
Категории: Nano planet

Engineering a new color palette for single-molecule imaging

Physorg.com - 15 мая, 2024 - 20:21
Researchers often study biomolecules such as proteins or amino acids by chemically attaching a "fluorophore," a sensitive molecule that absorbs and re-emits energy from light.
Категории: Nano planet

Polyglycerol coating offers safer nanoparticle environmental remediation

Physorg.com - 15 мая, 2024 - 18:35
Nanoparticles (NPs) are often used to reduce environmental pollution by targeting harmful chemicals in soil and water that are released by industrial and agricultural activities. These NPs are engineered to absorb, degrade, or neutralize these pollutants, providing a potential solution to environmental contamination. However, when released into the environment, they can be consumed by organisms and transferred through the food chain, resulting in widespread toxicity.
Категории: Nano planet

Scientists from Prague are expanding the possibilities of using RNA in gene medicine

Physorg.com - 15 мая, 2024 - 17:31
Dr. Petr Cígler and his collaborators are working on refining molecular systems for transporting ribonucleic acid (RNA) molecules into cells. The question of how to effectively deliver RNA to a designated place in the body in order to silence a malfunctioning gene is one of the greatest challenges of the rapidly developing field of gene medicine.
Категории: Nano planet

A thousand times smaller than a grain of sand—glass sensors 3D-printed on optical fiber

Physorg.com - 15 мая, 2024 - 17:19
In a first for communications, researchers in Sweden 3D printed silica glass micro-optics on the tips of optic fibers—surfaces as small as the cross section of a human hair. The advance could enable faster internet and improved connectivity, as well as innovations like smaller sensors and imaging systems.
Категории: Nano planet

Multi-scale, nanomaterial-based ice inhibition platform enables full-cycle cryogenic protection for mouse oocytes

Physorg.com - 15 мая, 2024 - 16:49
Safe and high-quality fertility preservation is of growing significance for women in clinical trials. Current primary methods for cryopreserving human oocytes are slow freezing and vitrification, but existing techniques pose risks of biochemical toxicity and are restricted in large-scale clinical practice.
Категории: Nano planet

Scientists achieve giant Rashba–Dresselhaus spin splitting in 2D chiral metal-organic frameworks

Physorg.com - 15 мая, 2024 - 00:26
A research team led by Prof. Li Xingxing and academician Yang Jinlong from University of Science and Technology of China (USTC) has developed two-dimensional (2D) chiral metal-organic frameworks as Rashba-Dresselhaus (R-D) semiconductors with large spin splitting. The study was published in Chemical Science.
Категории: Nano planet

Uneven strain distribution induces detwinning in penta-twinned nanoparticles

Physorg.com - 14 мая, 2024 - 17:54
Twinned nanoparticles have regions of clear symmetry that share the same crystal lattice, separated by a clear boundary. Changing the twin structure can affect the properties of the nanoparticles, which makes controlling twinning to create tailored nanomaterials an active area of research.
Категории: Nano planet

Self-assembled Na-doped zinc oxide for the detection of lung cancer biomarker VOCs at low concentrations

Physorg.com - 14 мая, 2024 - 00:24
Developing high-performance gas sensors for the detection of lung cancer markers at low concentrations is a crucial step towards achieving early lung cancer monitoring through breath tests. Metal oxide semiconductors (MOS) have long been sensitive to volatile organic compounds (VOCs), demonstrating excellent performance characteristics.
Категории: Nano planet

Exploration of individual colorectal cancer cell responses to H₂O₂ eustress

Physorg.com - 13 мая, 2024 - 22:16
In a recent study published in the journal Science Bulletin, researchers from the Nano Life Science Institute (WPI-NanoLSI) at Kanazawa University utilized hopping probe scanning ion conductance microscopy (HPICM) and highly sensitive platinum-functionalized nanoelectrodes to conduct an in-depth investigation of the dynamic response of individual living colorectal cancer Caco-2 cells to changes in intracellular and extracellular hydrogen peroxide (H2O2) gradients, specifically focusing on eustress, at the single-cell level and in real-time.
Категории: Nano planet

New gel breaks down alcohol in the body

Physorg.com - 13 мая, 2024 - 19:26
Most alcohol enters the bloodstream via the mucous membrane layer of the stomach and the intestines. These days, the consequences of this are undisputed: even small amounts of alcohol impair people's ability to concentrate and to react, increasing the risk of accidents.
Категории: Nano planet

Nanoparticle plant virus treatment shows promise in fighting metastatic cancers in mice

Physorg.com - 13 мая, 2024 - 18:12
An experimental treatment made from a plant virus is effective at protecting against a broad range of metastatic cancers in mice, according to a new study from the University of California San Diego.
Категории: Nano planet

Electron vortices in graphene detected for the first time

Physorg.com - 13 мая, 2024 - 16:49
When an ordinary electrical conductor—such as a metal wire—is connected to a battery, the electrons in the conductor are accelerated by the electric field created by the battery. While moving, electrons frequently collide with impurity atoms or vacancies in the crystal lattice of the wire, and convert part of their motional energy into lattice vibrations. The energy lost in this process is converted into heat that can be felt, for example, by touching an incandescent light bulb.
Категории: Nano planet