Articles tagged with Nanostructures
Researchers developed a mathematical model to predict the efficiency of nanoparticle delivery into cells, particularly in stem cells. They found that nanoparticles become trapped in bubble-like vesicles, preventing them from reaching their targets.
Researchers from Kumamoto University create nanocavities using ovalene molecules on gold electrodes, trapping a single thiol molecule. This breakthrough enables precise molecular design for future electronic devices and sensors.
Femtosecond laser processing has been shown to produce regular and deep nanostructures with improved efficiency compared to long-pulse lasers. The research group developed a new pulse-shaping system to enhance periodic deposition of laser energy, reduce residual heat, and avoid debris on the ablation spots.
A new study explores the characteristics of 36 basic variants of the Holliday junction, a fundamental building block used in DNA nanoforms. The results show that sequences forming the four protruding arms of the junction can enhance or hinder crystallization processes.
Researchers at Osaka University have created a microfluidic system that can detect minute changes in the concentration of trace amounts of ethanol, glucose, or minerals in water using terahertz radiation. The device achieved sensitivity levels an order of magnitude better than existing microfluidic chips.
Researchers found that nanocontacts remain solid despite vibrations, due to reversible rheological steady state. This phenomenon, previously thought to be a liquid, is actually caused by the movement of internal micro-surfaces.
A new study from Ohio State University found that DNA nanotechnology is safe for medical use in mice, with a dose-dependent immune response. The research suggests that different shapes of nanostructures may be more conducive to different therapeutic applications.
A research team from Tokyo University of Science has developed a new method to create copolymers with different metal species, which have potential uses in catalysis and drug discovery. The technique allows for controlling the composition of metal species in the resulting polymer.
The researchers successfully demonstrated attosecond-pump attosecond-probe spectroscopy to study non-linear multi-photon ionization of atoms. The experiment showed that the absorption of four photons from two attosecond pulse trains led to three electrons being removed from an argon atom.
Researchers at KAUST developed a new exhaust catalyst concept that can effectively remove NOx from vehicle emissions, resolving an ongoing debate over additive atoms in the catalyst mix. The team identified the ideal atomic recipe to catalytically remove NOx from diesel car tailpipes.
A multidisciplinary research group uses magnetotactic bacteria to create nanomagnetic structures, which can be steered through the human body via external magnetic fields. They have developed a new method to measure the magnetic properties of individual nanomagnets in biological entities, enabling precise control over these structures.
A new approach using artificial intelligence generates designs automatically, allowing researchers to create complex metasurfaces with billions of nanopillars. This enables the development of larger, more complex metalenses for virtual reality and augmented reality systems.
Researchers developed a biosensor using nanostructured and nanoporous surfaces to detect biomarkers in clinical samples, overcoming technical challenges of small sample amounts. The new technology can provide quick and accurate diagnoses for diseases like prostate cancer without needing dilution or preprocessing steps.
Researchers at the University of Tokyo have created a fast and efficient method for purifying saltwater using fluorine-based nanostructures. The new technology outperforms existing desalination methods, requiring less pressure, energy, and time to produce clean water.
Osaka University researchers have created a nanocellulose paper semiconductor with 3D network structures that can be tuned for use in various sustainable electronic devices. The treatment process allows for heat-induced conductivity without damaging the nanostructure, enabling flexible macro-scale structures and detailed designs.
A new measurement and imaging approach resolves nanostructures smaller than the diffraction limit without dyes or labels, using polarization and angle-resolved images of transmitted light. The method measures particle size and position with high accuracy, closing the gap between conventional microscopes and super-resolution techniques.
Würzburg physicists have developed microdrones that can be precisely controlled on a surface using light-driven nanomotors. The drones consist of polymer discs with up to four independently addressable nanomotors, enabling efficient propulsion and control in aqueous environments.
Researchers discovered that light can trigger magnetism in normally nonmagnetic materials by aligning electron spins. This breakthrough could enable the development of quantum bits for quantum computing and other applications.
Researchers at Aarhus University have developed improved DNA nanostructures that can assemble biomolecules with multiple functions, increasing the effectiveness of cancer treatment. The new structures are more stable, non-toxic, and immune system-friendly than previous versions.
A team of researchers used a new computer simulation to model the electrostatic self-organization of zwitterionic nanoparticles, which are useful for drug delivery. They found that including transient charge fluctuations greatly increased the accuracy, leading to the development of new self-assembling smart nanomaterials.
Researchers at Hebrew University have discovered a new magnetic phenomenon called edge magnetism, where materials only retain magnetism on their edge. This discovery could revolutionize the production of spintronics devices, enabling the creation of ultra-thin wire magnets with curved shapes.
Scientists at IIT realized coupled light vortices forming an ordered structure, a light crystal. They developed metasurfaces to control laser beams and created 100 light vortices with tunable topology, enabling new properties for optical communications and simulations of complex systems.
Rice University researchers have developed a customizing method for producing doped graphene with tailored structures and electronic states. The doping process adds elements to the 2D carbon matrix, making it suitable for use in nanodevices such as fuel cells and batteries.
Researchers from NTU Singapore and KIMM create chemical-free printing technique to fabricate semiconductor wafers with nanowires. The method produces highly uniform and scalable wafers, leading to improved performance and high chip yield.
An international research team developed nanometric light modulators to study neuronal tissue in deep brain regions. The new approach enables the creation of minimally invasive neural probes that can be used to study specific brain diseases, including brain tumors and epilepsy.
Researchers at UCLA have created highly flexible yet mechanically robust bioelectronic membranes using van der Waals thin film technology. The membranes can be stretched and flexed over irregular geometries, making them ideal for wearable health-monitoring devices and diagnostic sensors.
Researchers at ETH Zurich have successfully replicated the surface structures of the Cynandra opis butterfly using nano-3D printing, enabling the production of structures that generate all visible spectrum colours. This breakthrough could lead to applications in security features, optical technologies, and high-resolution colour displays.
Researchers at NIST have revived and improved the charge pumping method to detect single defects as small as one-tenth of a billionth of a meter. The new technique can indicate where defects are located in transistors, enabling accurate assessment of their impact on performance.
Scientists at Vienna University of Technology have successfully integrated large surface areas of graphene into limited volumes by producing it on complex branched nanostructures. This breakthrough enables increased storage capacity for hydrogen and higher sensitivity in chemical sensors.
University of Rochester researchers adapt excited state lifetime thermometry to extract temperatures of nanoscale materials from light emitted by nitrogen vacancy centers in single nanodiamonds. The technique allows for precise measurement of temperature changes on fast time scales and is safe for imaging sensitive nanoscale materials ...
Researchers at TTUHSC developed novel hydrophilic nanoparticles that target bacterial membranes, killing pathogens while sparing mammalian cells. The nanoantibiotics' size-dependent activity reveals a new blueprint for developing non-toxic and environmentally friendly antibiotics.
Researchers from SUTD and A*STAR IMRE demonstrate the use of chalcogenide nanostructures to reversibly tune Mie resonances in the visible spectrum, paving the way for high resolution colour displays. The technology relies on phase change materials, including antimony trisulphide nanoparticles.
Researchers have created a new, simpler way to fabricate SERS nanostructures with superior stability and performance at low cost. By using a heat-resistant polymer called polyimide (PI), they can produce nanosurfaces with nanopillars that enhance signal intensity for efficient chemical detection. The new fabrication method has the pote...
A team of researchers from Chemnitz University of Technology, IFW Dresden, and Max Planck Institute CBG presents a new type of biomedical tool with a tiny biocompatible microelectronic micro-catheter. The catheter has sensor and actuator functions integrated into its wall, making it highly flexible and adaptable to the body.
Researchers have discovered a natural nanostructure in birds that produces iridescent shimmer, finding an evolutionary tweak in feather nanostructure that has more than doubled the range of iridescent colors. This insight could inspire new materials that capture or manipulate light.
Scientists at Chalmers University of Technology discovered a way to create a stable resonator using two parallel gold flakes in a salty aqueous solution. The structure can be manipulated and used as a chamber for investigating materials and their behavior, with potential applications in physics, biosensors, and nanorobotics.
Researchers have developed a new electrochemical technique for printing metal objects at the nanoscale, achieving resolutions of up to 25 nanometres in diameter. This technology has vast potential applications in fields like microelectronics, sensor technology, and battery production.
Researchers from Peking University developed a new technique using 4D-EELS to measure phonon modes at heterointerfaces, directly observing localized phonon modes for the first time. This breakthrough enables better understanding and control of solid interfaces' properties.
Borophene, a 2D version of boron, can be synthesized on hexagonal boron nitride using weak van der Waals forces. This method allows for easier removal and evaluation of the material for its plasmonic and photonic properties, as well as its electronic properties relevant to superconductivity.
Scientists at NTU Singapore develop a new electrochromic window material that can block up to 70% of infrared radiation while allowing 90% of visible light to pass through. The material is designed to be energy-efficient and durable, with improved performance compared to existing technologies.
Scientists have developed a technique called crystal capillary origami, where salt crystals form into spherical shells to enclose water-oil emulsions. The process utilizes Laplace pressure to drive the crystallite plates to cover the surface of the liquid.
Scientists fabricate 1D and 2D boron sulfide (BS) nanosheets with unique electronic properties that can be controlled by changing the number of layers. The bandgap energy decreases as more layers are added, making BS a potential n-type semiconductor material.
Scientists develop a new way to control heat flow through ultrathin layers, promising sensitive thermoelectric devices. Weaker coupling between layers reduces heat transport by up to ten times.
Researchers create efficient, designer infrared light sources with near-arbitrary spectral output, enabling molecular sensing technologies and various applications. The innovative process leverages heat-driven design and machine learning, reducing optimization time from weeks to minutes.
Rice materials scientists develop a method to print arbitrary 3D shapes, creating micro-scale electronic, mechanical and photonic devices. The process involves two-photon polymerization and doping with rare earth salts for photoluminescent properties.
Scientists have developed a method to precisely map the polarization pattern in thin ferroelectric layers, revealing new insights into the physics of these objects. The technique, combined with machine learning, allows for the spatial resolution of ferroelectric domains below 10 nanometers.
Researchers at CU Boulder have discovered a way to cool down ultra-small heat sources by packing them closer together, using computational simulations to track the passage of heat. The findings highlight the challenges of designing efficient electronic devices and could lead to faster cooling in future tech.
Researchers at Goethe University Frankfurt and Bonn have synthesized molecular nano spheres made of silicon atoms, known as silafulleranes, which can encapsulate chloride ions. The discovery of these new compounds may lead to improved applications in electronics, solar cells, and batteries.
Lehigh University researchers are developing a model to understand the impact of grain growth on material properties. The project aims to create new materials informatics methods, innovative stochastic differential equations, and models of grain growth to improve material performance and reliability.
Researchers developed a method to scale up nanocages to trap noble gases like krypton and xenon. The team used commercial materials and found the optimal temperature range for trapping gas atoms inside the cages.
Researchers have created the smallest microsupercapacitors to date, which can function in artificial blood vessels and provide an energy source for tiny sensor systems. The biosupercapacitor has a volume of 0.001 mm3 and delivers up to 1.6 V supply voltage.
Researchers at the University of Rochester have developed a new method using pulsed lasers in liquids to create nanoparticles that can be easily tested for use as catalysts. This technique accelerates the process of discovering effective catalysts, which is crucial for producing essential materials and clean fuels.
Engineered nanostructures overcome problems in gas-based high-harmonic generation, enabling scientists to observe molecular dynamics with a single laser shot. The record-breaking conversion efficiency covers a wide range of photon energies, opening up new opportunities for studying matter at ultrahigh fields.
Researchers developed sensitive SERS substrates via femtosecond laser processing for real-time sensing in biomedicine and microfluidic chips. Attomolar detection capabilities were achieved through synergistic enhancement effects, opening up new avenues for monitoring and sensing applications.
The team successfully synthesized Christmas-tree-shaped palladium nanostructures that enhance catalytic activity for AA electro-oxidation. Multiple sharp edges observed in the nanostructures improve electrocatalytic performance.
A team from Kazan Federal University and King's College London has developed a thermoplasmonic sensor that can detect phase transitions in nanoscale materials with high sensitivity. The sensor uses metallic nanoantennas to heat up the material, allowing for the detection of changes in its properties.
Researchers at Trinity College Dublin developed a magnetic material that demonstrates the fastest magnetic switching ever recorded, six times faster than the previous record. The discovery could lead to new energy-efficient ultra-fast computers and data storage systems, revolutionizing the field of information technology.
University of Rochester researchers developed a novel technology using freeform optics and metasurfaces to deliver high-quality images with socially acceptable optics. The metaform component gathers visible light rays from all directions and redirects them directly into the human eye, achieving a significant improvement in image quality.
Researchers create nanostructured bimetallic catalysts with enhanced activity and stability, offering a cost-effective alternative to noble metal-based catalysts. The new material is stabilized on a conductive surface using a polymeric material, enabling predictable catalysis performance.
Researchers have developed a kirigami technique to fabricate complex 3D nanostructures with unprecedented ease. By strategically introducing cuts to a uniform structural film, the team can create sophisticated three-dimensional structures that can change shape in response to environmental changes.