Posted on May 28, 2021Categories Nanotechnology   Leave a comment on New way to simulate hydrogen storage efficiency of materials

New way to simulate hydrogen storage efficiency of materials

The energy change associated with hydrogen removal from silicon carbide nanotubes.  The graph shows the variation of system energy with the distance of a hydrogen molecule from the surface of a silicon carbide nanotube (bottom right). The depth of the curve signifies the energy required to extract hydrogen from storage. A comparison of prediction methods is presented, with DMC being the most accurate and vdW-DF2 being its closest match. Credit: Kenta Hongo from JAIST Hydrogen energy has the potential to be … Continue reading “New way to simulate hydrogen storage efficiency of materials”

Posted on May 28, 2021Categories Nanotechnology   Leave a comment on Single-step green synthesis of composite material for wound healing

Single-step green synthesis of composite material for wound healing

The synthesis procedure of AgNPs@rGO and its application in antibacterial effect. Credit: Liu Chao Researchers from the Hefei Institutes of Physical Science (HFIPS) of the Chinese Academy of Sciences developed a novel approach of green synthesis of silver nanoparticles and reduced graphene oxide composite material (AgNPs@rGO) based on plasma technology. This composite nanomaterial, according to the researchers, with much simplified manufacturing process, can be made into band-aids for wound sterilization and healing. Abuse of antibiotics can cause bacterial resistance. Silver … Continue reading “Single-step green synthesis of composite material for wound healing”

Posted on May 28, 2021Categories Nanotechnology   Leave a comment on Single-atom-thick semiconductor sandwich is a significant step toward ultra-low-energy electronics

Single-atom-thick semiconductor sandwich is a significant step toward ultra-low-energy electronics

Left: Electron-hole pairs in atomically-thin WS2 on a substrate where dielectric disorder is similar size to excitons. Right: Hybridisation of excitons and photons leads to formation of polaritons in an all-dielectric high-Q optical microcavity, reducing effect of dielectric disorder. Credit: FLEET A new ‘sandwich-style’ fabrication process placing a semiconductor only one atom thin between two mirrors has allowed Australian researchers to make a significant step towards ultra-low energy electronics based on the light-matter hybrid particles exciton-polaritons. The study, led by … Continue reading “Single-atom-thick semiconductor sandwich is a significant step toward ultra-low-energy electronics”

Posted on May 28, 2021Categories Nanotechnology   Leave a comment on How to program DNA robots to poke and prod cell membranes

How to program DNA robots to poke and prod cell membranes

The study discovered the best way to design and build DNA ‘nanostructures’ to effectively manipulate synthetic liposomes (pictured) – tiny bubbles which have traditionally been used to deliver drugs for cancer and other diseases. Credit: Shutterstock. Scientists have worked out how to best get DNA to communicate with membranes in our body, paving the way for the creation of ‘mini biological computers’ in droplets that have potential uses in biosensing and mRNA vaccines. UNSW’s Dr. Matthew Baker and the University … Continue reading “How to program DNA robots to poke and prod cell membranes”

Posted on May 28, 2021Categories Nanotechnology   Leave a comment on Facet controllable synthesis of two-dimensional rare earth oxides

Facet controllable synthesis of two-dimensional rare earth oxides

The center schematic diagram exhibits the facet transition process of 2D REOs single crystals via the surface energy engineering assisted by FCA. The SEM images around show a series of 2D REOs single crystals exposing different facets, scale bar: 1 μm. Credit: Science China Press Since graphene was awarded the Nobel Prize in 2010, two-dimensional (2D) materials have continued to attract researchers’ attention in logic, storage, optoelectronic and photonic 2D device manufacturing fields because of the atomic thickness and excellent … Continue reading “Facet controllable synthesis of two-dimensional rare earth oxides”

Posted on May 28, 2021Categories Nanotechnology   Leave a comment on Carbon nanotube-based sensor can detect SARS-CoV-2 proteins

Carbon nanotube-based sensor can detect SARS-CoV-2 proteins

The researchers incorporated their sensor into a prototype with a fiber optic tip that can detect changes in fluorescence in the test sample. Credit: MIT Using specialized carbon nanotubes, MIT engineers have designed a novel sensor that can detect SARS-CoV-2 without any antibodies, giving a result within minutes. Their new sensor is based on technology that can quickly generate rapid and accurate diagnostics, not just for COVID-19 but for future pandemics, the researchers say. “A rapid test means that you … Continue reading “Carbon nanotube-based sensor can detect SARS-CoV-2 proteins”

Posted on May 28, 2021Categories Nanotechnology   Leave a comment on Towards straintronics: Guiding excitons in 2D materials

Towards straintronics: Guiding excitons in 2D materials

Topography of the two-dimensional crystal on top of the microscopically small wire indicated by dashed lines. Excitons freely move along the wire-induced dent, but cannot escape it in the perpendicular direction. Credit: Florian Dirnberger. From a team of City College of New York physicists and their collaborators in Japan and Germany comes another advancement in the study of excitons—electrically neutral quasiparticles that exist in insulators, semi-conductors and some liquids. The researchers have created an “excitonic” wire, or one-dimensional channel for … Continue reading “Towards straintronics: Guiding excitons in 2D materials”

Posted on May 28, 2021Categories Nanotechnology   Leave a comment on Chemists synthesise the smallest nano-sized particles to detect heavy metal ions in water

Chemists synthesise the smallest nano-sized particles to detect heavy metal ions in water

The presence of metal ions can quench the luminescence of the Eu-based metal-organic frameworks. Credit: SPbU Scientists at St Petersburg University, Sirius University of Science and Technology, and St Petersburg Academic University have synthesized the smallest nano-sized metal-organic frameworks to detect heavy metal ions in water. The results and outcomes of the experiments and description of the properties of the crystals are published in Nanomaterials. Metal-organic polymers, or metal-organic frameworks (MOFs), are crystals composed of metal ions interconnected by organic … Continue reading “Chemists synthesise the smallest nano-sized particles to detect heavy metal ions in water”

Posted on May 28, 2021Categories Nanotechnology   Leave a comment on Spiral self-assembly of lamellar micelles into multi-shelled hollow nanospheres with unique chiral architecture

Spiral self-assembly of lamellar micelles into multi-shelled hollow nanospheres with unique chiral architecture

Schematic representation of the formation process of the spiral MCNs. First, the lamellar micelle system was formed by stirring the reactant at 300 rpm. Then, the lamellar micelles were dynamically assembled into the mesostructured PDA nanospheres under the guidance of the shearing flow. Last, carbonization of the freeze-dried PDA nanospheres in N2 atmosphere could lead to the formation of spiral MCNs with interesting chiral architecture. Credit: Science Advances, doi: 10.1126/sciadv.abi7403 It is challenging to develop functional carbon nanospheres with well-defined … Continue reading “Spiral self-assembly of lamellar micelles into multi-shelled hollow nanospheres with unique chiral architecture”

Posted on May 28, 2021Categories Nanotechnology   Leave a comment on By keeping ferroelectric ‘bubbles’ intact, researchers pave way for new devices

By keeping ferroelectric ‘bubbles’ intact, researchers pave way for new devices

Observation of freestanding ferroelectric bubble domains by high-resolution piezoresponse force microscopy: The two blue-white spots (4 nm radius) at the right side of the image indicate bubbles. Credit: Argonne National Laboratory.) When a magician suddenly pulls a tablecloth off a table laden with plates and glasses, there is a moment of suspense as the audience wonders if the stage will soon be littered with broken glass. Until now, an analogous dilemma had faced scientists working with special electrical bubbles to … Continue reading “By keeping ferroelectric ‘bubbles’ intact, researchers pave way for new devices”