Category: Nanotechnology

New nanocomposite from papaya peel waste exhibits promising photocatalytic and antibacterial activity

Apr 23, 2024 | ,

In a significant leap towards sustainable environmental management and antimicrobial strategies, a team of international researchers has successfully synthesized a fluorescent carbon dot (CD) and reduced graphene oxide (RGO) nanocomposite from papaya peel waste. The study, published in the Journal of Bioresources and Bioproducts, details a one-step hydrothermal method to fabricate the nanocomposite, which was then characterized using various spectroscopic and microscopic techniques.
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Scientists stencil-paint carbon nanotube components for flexible transparent electronics

Apr 23, 2024 | ,

Researchers from Skoltech, MIPT, and elsewhere have found a fast and inexpensive way to create geometric patterns in carbon nanotube films. The resulting films turned out to have superior properties for manufacturing components for 6G communication devices and flexible and transparent electronics—such as wearable health trackers. The patterning method is detailed in a paper in the Chemical Engineering Journal.
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Breaking boundaries in tiny labs: New technology using sound waves has implications for nanoparticle manipulation

Apr 23, 2024 | ,

Acoustofluidics elegantly merges acoustics with fluid mechanics, enabling precise manipulation of fluids and particles on both micro and nanoscales. This interdisciplinary field plays a crucial role in biomedicine, tissue engineering, and nanoparticles synthesis. However, the effectiveness and potential of traditional acoustofluidic devices are often curtailed by their dependency on the specific geometries of fluidic chambers, thus limiting their adaptability and versatility.
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Electron videography captures moving dance between proteins and lipids

Apr 22, 2024 | ,

In a first demonstration of “electron videography,” researchers have captured a microscopic moving picture of the delicate dance between proteins and lipids found in cell membranes. The technique can be used to study the dynamics of other biomolecules, breaking free of constraints that have limited microscopy to still images of fixed molecules, say University of Illinois Urbana-Champaign researchers and collaborators at the Georgia Institute of Technology.
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European XFEL elicits secrets from an important nanogel

Apr 19, 2024 | ,

An international team at the world’s largest X-ray laser European XFEL at Schenefeld near Hamburg has scrutinized the properties of an important nanogel that is often used in medicine to release drugs in a targeted and controlled manner at the desired location in a patient’s body. The team has now published the results in the journal Science Advances.
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Atom-by-atom: Imaging structural transformations in 2D materials

Apr 17, 2024 | ,

Silicon-based electronics are approaching their physical limitations and new materials are needed to keep up with current technological demands. Two-dimensional (2D) materials have a rich array of properties, including superconductivity and magnetism, and are promising candidates for use in electronic systems, such as transistors. However, precisely controlling the properties of these materials is extraordinarily difficult.
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Two-dimensional nanomaterial sets expansion record

Apr 17, 2024 | ,

It is a common hack to stretch a balloon out to make it easier to inflate. When the balloon stretches, the width crosswise shrinks to the size of a string. Noah Stocek, a Ph.D. student collaborating with Western physicist Giovanni Fanchini, has developed a new nanomaterial that demonstrates the opposite of this phenomenon.
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Nanovials method for immune cell screening uncovers receptors that target prostate cancer

Apr 15, 2024 | ,

A recent UCLA study demonstrates a new process for screening T cells, part of the body’s natural defenses, for characteristics vital to the success of cell-based treatments. The method filters T cells based on the receptor proteins found on their surface—which enable them to latch onto certain threats—and the type and amount of cell-killing or immune response-triggering molecules that they secrete.
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A magnetic nanographene butterfly poised to advance quantum technologies

Apr 15, 2024 | ,

Researchers from the National University of Singapore (NUS) have developed a new design concept for creating next-generation carbon-based quantum materials, in the form of a tiny magnetic nanographene with a unique butterfly-shape hosting highly correlated spins. This new design has the potential to accelerate the advancement of quantum materials which are pivotal for the development of sophisticated quantum computing technologies poised to revolutionize information processing and high density storage capabilities.
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Novel hydrogel removes microplastics from water

Apr 12, 2024 | ,

Microplastics pose a great threat to human health. These tiny plastic debris can enter our bodies through the water we drink and increase the risk of illnesses. They are also an environmental hazard; found even in remote areas like polar ice caps and deep ocean trenches, they endanger aquatic and terrestrial lifeforms.
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Utilizing palladium for addressing contact issues of buried oxide thin film transistors

Apr 5, 2024 | ,

A novel method that employs palladium to inject hydrogen into the deeply buried oxide-metal electrode contacts of amorphous oxide semiconductors (AOSs) storage devices, which reduces contact resistance, has been developed by scientists at Tokyo Tech. This innovative method presents a valuable solution for addressing the contact issues of AOSs, paving the way for their application in next-generation storage devices and displays.
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Propelling atomically layered magnets toward green computers

Apr 5, 2024 | ,

Globally, computation is booming at an unprecedented rate, fueled by the boons of artificial intelligence. With this, the staggering energy demand of the world’s computing infrastructure has become a major concern, and the development of computing devices that are far more energy-efficient is a leading challenge for the scientific community.
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Biodegradable aerogel: Airy cellulose from a 3D printer

Apr 4, 2024 | ,

At first glance, biodegradable materials, inks for 3D printing and aerogels don’t seem to have much in common. All three have great potential for the future; however, “green” materials do not pollute the environment, 3D printing can produce complex structures without waste, and ultra-light aerogels are excellent heat insulators.
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Nano-oscillator hits record quality factor

Mar 29, 2024 | ,

In their latest study, a team led by Tracy Northup at the Department of Experimental Physics unveils the successful creation of a levitated nanomechanical oscillator with an ultra-high quality factor, significantly surpassing previous experimental achievements. The study has been published in Physical Review Letters.
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Scientists propose theoretical design strategy for room-temperature metal-organic multiferroics

Mar 28, 2024 | ,

A research group led by Prof. Li Xiangyang from the Hefei Institutes of Physical Science of the Chinese Academy of Sciences has theoretically predicted a series of multiferroic materials that can be applied in room-temperature environments by utilizing the d-p spin coupling combined with center-symmetry-breaking organic heterocycles in two-dimensional (2D) Cr-based metal-organic frameworks.
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New method uses nanofibrils on magnetic microparticles to isolate HIV particles

Mar 28, 2024 | ,

Researchers at Leipzig University and Ulm University have developed a new method to isolate HIV from samples more easily, potentially making it easier to detect infection with the virus. They focus on peptide nanofibrils (PNFs) on magnetic microparticles, a promising tool and hybrid material for targeted binding and separation of viral particles. They have published their new findings in Advanced Functional Materials.
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Electronic device thermal management made simpler and slightly better

Mar 28, 2024 | ,

Dr. Cheol-Woo Ahn, leading a research team at the Department of Functional Ceramics within the Ceramic Materials Division at the Korea Institute of Materials Science (KIMS), has developed the world’s first heat dissipation material. This material reduces hydrophilicity through a chemical reaction that forms a nanocrystalline composite layer and increases thermal conductivity by controlling point defects. This process occurs during a simple sintering process that does not require surface treatment.
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A new fullertube molecule is found

Mar 27, 2024 | ,

For years, C130 fullertubes—molecules made up of 130 carbon atoms—have existed only in theory. Now, leading an international team of scientists, a UdeM doctoral student in physics has successfully shown them in real life—and even managed to capture some in a photograph.
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Unveiling the future of nanostructures with soft matter magic

Mar 27, 2024 | ,

As traditional top-down approaches like photolithography reach their limitations in creating nanostructures, scientists are shifting their focus toward bottom-up strategies. Central to this paradigm shift is the self-assembly of homogeneous soft matter, a burgeoning technique with the potential to produce complex nano-patterns on a vast scale.
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New cost-effective method can detect low concentrations of pharmaceutical waste and contaminants in water

Mar 21, 2024 | ,

Pharmaceutical waste and contaminants present a growing global concern, particularly in the context of drinking water and food safety. Addressing this critical issue, a new study by researchers at Bar-Ilan University’s Department of Chemistry and Institute of Nanotechnology and Advanced Materials has resulted in the development of a highly sensitive plasmonic-based detector, specifically targeting the detection of harmful piperidine residue in water.
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New method for analyzing nanoporous materials

Mar 21, 2024 | ,

In addition to their main components, the properties of crystalline and nanoporous materials often depend crucially on guest atoms or ions that are embedded in the tiny pores of their lattice structure. This applies to high-tech materials used in sensor or separation technology as well as to natural materials. The bluish gemstone aquamarine, for example, would be colorless without such guest components.
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Not just a lodger: Novel host-guest assembly provides enhanced reactivity

Mar 15, 2024 | ,

By design, synthetic molecules typically have specific jobs to prevent or accelerate reactions between other molecules. To help control more complicated reactions, researchers may harness spare space in one molecule to synthesize another chemical structure. The host-guest assembly can better induce the specific desired reaction than either component individually—if the scientists designing the assembly get it right.
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Printed polymer allows researchers to explore chirality and spin interactions at room temperature

Mar 15, 2024 | ,

A printable organic polymer that assembles into chiral structures when printed has enabled researchers to reliably measure the amount of charge produced in spin-to-charge conversion within a spintronic material at room temperature. The polymer’s tunable qualities and versatility make it desirable not only for less expensive, environmentally friendly, printable electronic applications, but also for use in understanding chirality and spin interactions more generally.
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Researchers use 2D bimetallic MOFs to create Se-containing electrocatalysts for overall water splitting

Mar 8, 2024 | ,

Transition metal selenides have been considered to be a good choice for electrocatalytic water splitting. In addition, Metal-organic frameworks (MOFs) have been used to make catalysts with good electrocatalytic capabilities. Traditionally, the MOF-derived selenides are produced via the self-sacrificing MOF template methods. However, this strategy is high-energy consuming, and it is difficult to precisely control the structure and component homogeneity of the product during pyrolysis.
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