Current Nanoscale News and Events | Page 2

Current Nanoscale News and Events, Nanoscale News Articles.
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Physicists make electrical nanolasers even smaller
Researchers cleared the obstacle that had prevented the creation of electrically driven nanolasers for integrated circuits. The approach enables coherent light source design on the scale not only hundreds of times smaller than the thickness of a human hair but even smaller than the wavelength of light emitted by the laser. This lays the foundation for ultrafast optical data transfer in the manycore microprocessors expected to emerge in the near future. (2020-09-16)

Nanophysics - Spectral classification of excitons
Ultrathin layers of tungsten diselenide have potential applications in opto-electronics and quantum technologies. Ludwig-Maximilians-Universitaet (LMU) in Munich researchers have now explored how this material interacts with light in the presence of strong magnetic fields. (2020-09-10)

High-precision electrochemistry: The new gold standard in fuel cell catalyst development
As part of an international collaboration, scientists at Argonne National Laboratory have made a pivotal discovery that could extend the lifetime of fuel cells that power electric vehicles by eliminating the dissolution of platinum catalysts. (2020-09-10)

Autonomous robot plays with NanoLEGO
Atoms and molecules behave in a completely different way to macroscopic objects and each brick requires its own ''instruction manual''. Scientists from J├╝lich and Berlin have now developed an artificial intelligence system that autonomously learns how to grip and move individual molecules using a scanning tunnelling microscope. (2020-09-03)

Photonics researchers report breakthrough in miniaturizing light-based chips
Electrical engineers at the University of Rochester have created the smallest electro-optical modulator yet, using a thin film of lithium niobate bonded on a silicon dioxide layer. This key component of a photonics-based chip controls how light moves through its circuits and has broad applications in data communication, microwave photonics, and quantum photonics. (2020-08-27)

Hip fracture risk linked to nanoscale bone inflexibility
New research has highlighted a preventative treatment gap in patients prone to bone fractures who are otherwise healthy. (2020-08-26)

Microscopic robots 'walk' thanks to laser tech
A Cornell University-led collaboration has created the first microscopic robots that incorporate semiconductor components, allowing them to be controlled - and made to walk - with standard electronic signals. (2020-08-26)

Trapping and controlling light at the interface of atomically thin nanomaterials
In a recent study, scientists at Cornell University propose a novel method by which nanoscale light can be manipulated and transported. (2020-08-20)

Graphene sensors find subtleties in magnetic fields
Cornell researchers used an ultrathin graphene ''sandwich'' to create a tiny magnetic field sensor that can operate over a greater temperature range than previous sensors, while also detecting miniscule changes in magnetic fields that might otherwise get lost within a larger magnetic background. (2020-08-20)

A new lens on the world: Improving the metalens with liquid crystal
Case Western Reserve University physics professor Giuseppe Strangi and collaborators at Harvard and the Italian university UniCal have taken a step toward making ''metalenses'' even more useful--by making them reconfigurable. They did this by harnessing nanoscale forces to infiltrate liquid crystals between those microscopic pillars, allowing them to shape and diffract the light in completely new ways--''tuning'' the focusing power, Strangi said. (2020-08-20)

Nanocrystals from recycled wood waste make carbon-fiber composites tougher
In a new study, Texas A&M University researchers have used a natural plant product, called cellulose nanocrystals, to pin and coat carbon nanotubes uniformly onto the carbon-fiber composites. The researchers said their prescribed method is quicker than conventional methods and also allows the designing of carbon-fiber composites from the nanoscale. (2020-08-11)

A closer look at water-splitting's solar fuel potential
Scientists at Berkeley Lab and the Joint Center for Artificial Photosynthesis (JCAP) have gained important new insight into how the performance of a promising semiconducting thin film can be optimized at the nanoscale for renewable energy technologies such as solar fuels. (2020-08-06)

Turning carbon dioxide into liquid fuel
A team led by Argonne in collaboration with Northern Illinois University reports a new electrocatalyst that converts carbon dioxide and water into ethanol with very high energy efficiency, high selectivity for the desired final product and low cost. (2020-08-05)

Discovery will allow more sophisticated work at nanoscale
The movement of fluids through small capillaries and channels is crucial for processes ranging from blood flow through the brain to power generation and electronic cooling systems, but that movement often stops when the channel is smaller than 10 nanometers. Researchers led by a University of Houston engineer have reported a new way to stimulate the fluid flow by using a small increase in temperature or voltage. (2020-07-28)

Origami metamaterials show reversible auxeticity combined with deformation recoverability
New research by Northwestern Engineering and Georgia Institute of Technology expands the understanding of origami structures, opening possibilities for mechanical metamaterials to be used in soft robotics and medical devices. (2020-07-27)

Discovery of disordered nanolayers in intermetallic alloys
A research team led by scientists of City University of Hong Kong (CityU) has recently discovered the disordered nanoscale layers at grain boundaries in the ordered intermetallic alloys. The nanolayers can not only resolve the irreconcilable conflict between strength and ductility effectively, but also maintain the alloy's strength with an excellent thermal stability at high temperatures. Designing similar nanolayers may open a pathway for the design of new structural materials with optimal alloy properties. (2020-07-24)

CIC nanoGUNE reaches new depths in infrared nanospectroscopy
Researchers from the Nanooptics Group at CIC nanoGUNE (San Sebastian) demonstrate that nanoscale infrared imaging - which is established as a surface-sensitive technique - can be employed for chemical nanoidentification of materials that are located up to 100 nm below the surface. (2020-07-23)

'Seeing' and 'manipulating' functions of living cells
Toyohashi University of Technology has given greater functionalities to atomic force microscopy (AFM). Our research team has succeeded in minimally invasive surgery to living cells using photocatalytic oxidation controlled in a nanoscale space and visualizing dynamic information on intracellular biomolecules. This proposed technique for controlling and visualizing the process of cell function expression on a high level has significant potential as a strong nanofabrication and nanomeasurement system to solve the mystery of life. (2020-07-22)

Atomic force microscopy reveals nanoscale dental erosion from beverages
KAIST researchers used atomic force microscopy to quantitatively evaluate how acidic and sugary drinks affect human tooth enamel at the nanoscale level. This novel approach is useful for measuring mechanical and morphological changes that occur over time during enamel erosion induced by beverages. (2020-07-22)

Researchers realize nanoscale electrometry based on magnetic-field-resistant spin sensor
USTC researchers proposed a robust electrometric method utilizing continuous dynamic decoupling (CDD) technique, where the continuous driving fields provide a magnetic-field-resistant dressed frame. (2020-07-17)

Microscopy technique reveals nanoscale detail of coatings as they dry
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. Lehigh University 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. (2020-07-10)

Scientists create new device to light up the way for quantum technologies
Researchers at CRANN and the School of Physics at Trinity College Dublin, Ireland, 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. (2020-07-07)

Deterministic reversal of single magnetic vortex circulation by an electric field
Chinese researchers discover a deterministic reversal of magnetic vortex circulation in a Ni79Fe21 (NiFe) island on top of a layered-perovskite Bi2WO6 (BWO) thin film using an electric field. (2020-07-06)

Materials scientists drill down to vulnerabilities involved in human tooth decay
Northwestern University 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. (2020-07-01)

Researchers control elusive spin fluctuations in 2D magnets
A Cornell team developed a new imaging technique that is fast and sensitive enough to observe these 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. (2020-06-29)

Developing new techniques to improve atomic force microscopy
Researchers from the University of Illinois at Urbana-Champaign have developed a new method to improve the noise associated with nanoscale chemical imaging using atomic force microscopy. The improvements will increase the versatility and the precision of the instrument. (2020-06-26)

Common food additive causes adverse health effects in mice
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 research led by a University of Massachusetts Amherst food scientist. (2020-06-25)

Nature-imitating coating makes batteries more durable and efficient
Aalto University's researchers were the first in the world to make use of carbon dioxide in the production of a battery protective coating. In the future, the coating could multiply the battery life and enable the use of new, more efficient materials. (2020-06-24)

New microscopy under ambient achieves less than 10 nm spatial resolution on surface potential measurement
A new nanomaterials microscopy approach called Pulsed Force Kelvin Probe Force Microscopy (PF-KPFM), allows for less than 10 nanometer measurements of work function and surface potential in a single-pass AFM scan. The findings have been published in two related articles in ACS Nano Angewandte Chemie International Edition. (2020-06-24)

Superlens squeezes light into nanospace
Russian and Danish researchers have made a first-ever experimental observation of a plasmon nanojet. This physical phenomenon enables nanoscale focusing of light and, theoretically, allows engineers to bypass one of the fundamental limitations of the ordinary converging lens. Tight compression of light waves is necessary to use them as signal carriers in compact devices that would work much faster than today's electronics. (2020-06-15)

Researchers mimic nature for fast, colorful 3D printing
Brilliantly colored chameleons, butterflies, opals - and now some 3D-printed materials -- reflect color by using nanoscale structures called photonic crystals. A new study that demonstrates how a modified 3D-printing process provides a versatile approach to producing multiple colors from a single ink is published in the journal Science Advances. (2020-06-10)

Armor on butterfly wings protects against heavy rain
An analysis of high-speed raindrops hitting biological surfaces such as feathers, plant leaves and insect wings reveals how these highly water-repelling veneers reduce the water's impact. (2020-06-09)

New discovery advances optical microscopy
New Illinois ECE research is advancing the field of optical microscopy, giving the field a critical new tool to solve challenging problems across many fields of science and engineering including semiconductor wafer inspection, nanoparticle sensing, material characterization, biosensing, virus counting, and microfluidic monitoring. (2020-06-05)

New microscopy method provides unprecedented look at amyloid protein structure
Neurodegenerative diseases such as Alzheimer's and Parkinson's are often accompanied by amyloid proteins in the brain that have become clumped or misfolded. A newly developed technique that measures the orientation of single molecules is enabling optical microscopy to be used, for the first time, to reveal nanoscale details about the structures of these problematic proteins. (2020-06-04)

Self-assembling, biomimetic composites possess unusual electrical properties
Sometimes, breaking rules is not a bad thing. Especially when the rules are apparent laws of nature that apply in bulk material, but other forces appear in the nanoscale. (2020-06-04)

Pushing photons
UC Santa Barbara researchers continue to push the boundaries of LED design a little further with a new method that could pave the way toward more efficient and versatile LED display and lighting technology. (2020-06-03)

Theoretical breakthrough shows quantum fluids rotate by corkscrew mechanism
Scientists performed simulations of merging rotating superfluids, revealing a peculiar corkscrew-shaped mechanism that drives the fluids into rotation without the need for viscosity. (2020-05-29)

Kirigami/origami: Unfolding the new regime of advanced 3D micro-/nanofabrication with 'folding'
Emerging kirigami/origami techniques, neither subtractive nor additive, provide an automated fashion for 3D micro-/nanofabrication through folding, bending and twisting of 2D materials/structures. Aiming to shine a glimpse on this new regime, a research team in China reviewed some of the latest kirigami/origami-like 3D fabrication techniques in micro-/nanoscale, including the stimulus strategies and potential applications on reshaping 2D materials, optical reconfigurations, etc. The review is helpful to build new platforms for both physics and application exploration. (2020-05-26)

SUTD scientists led development of novel acoustofluidic technology that isolates submicron particles
SUTD researchers and their collaborators developed a novel nanoacoustic trapping device that manipulates particles within submicron ranges by applying a structured elastic layer at the interface between a microfluidic channel and a travelling surface acoustic wave (SAW). This novel acoustofluidic device provides a promising solution for sorting and size-selective capture of nanoscale objects that requires patterning into discrete traps at the single-particle level. (2020-05-19)

Lighting up cells with genetically-encoded X-ray-sensitive probes
Synchrotron-based X-ray microscopy provides a unique approach for direct imaging a whole cell with its intrinsic nanoscale resolution. However, the lack of appropriate labels hampers its widespread use as compared to fluorescence super-resolution microscopy. A group of scientists in China repurposed peroxidases as genetically-encoded endogenous X-ray-sensitive tags, which allows nanoscale localization of protein-of-interest in mammalian cells. (2020-05-18)

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