Articles tagged with Nanostructures
A research team developed a straightforward method to find high-Q modes in single dielectric nanocavities. They discovered high-Q modes using Mie mode engineering and avoided crossing, resulting in improved photonic device performance and applications.
Columbia Engineers use DNA nanotechnology to design nanoparticle-based 3D materials that can withstand extreme conditions. The new fabrication process results in robust and fully engineered nanoscale frameworks with a broad range of applications.
A team of researchers from Aalto University and other institutions have developed a method to monitor the digestion of DNA nanostructures by endonucleases in real time. This study provides insights into tunable drug delivery and new design paradigms for DNA-based drug-carriers, with potential applications in cancer treatment.
A research team at KAIST has developed a highly deformable ceramic piezoelectric material that can convert mechanical stimuli into electrical signals. The material's elastic strain limit is three times greater than that of bulk zinc oxide, making it suitable for advancing high-performing haptic technology.
A research team at Pohang University of Science & Technology developed a switchable display device using nanostructures that can encrypt full-color images depending on the polarization of light. The device boasts high resolution (approximately 40,000 dpi) and wide viewing angle while being thin.
Researchers develop novel design and fabrication techniques for rainbow light trapping, enabling extreme light confinement and versatile application in low concentration molecular sensing, enhanced photocatalysis, and super-resolution optics. The technique uses analytical modeling to optimize groove geometry for broadband electromagnet...
Researchers at Tokyo University of Science create a novel strategy to produce moth-eye nanostructures and transparent films, overcoming previous scalability issues. The resulting film exhibits remarkable optical properties, including low reflectance and increased transmittance.
Researchers at USTC have designed a simple method to synthesize single crystalline wurtzite CZIS and CZGS nanobelts with exposed (0001) facets, showing excellent photocatalytic performances under visible-light irradiation. This work demonstrates the significance of surface engineering in quaternary sulfide photocatalysts.
A multidisciplinary team has demonstrated the ability to reproduce the nanostructures that help cicada wings repel water, using a simplified version of nanoimprinting lithography and commercial nail polish. The new technique produces replicas with an average of 94.4% pillar height and 106% of the original wing's pillar diameter.
Researchers create a device that displays directionally asymmetric reflective colors based on viewing direction, enabling information encryption via optical camouflage. The design allows for bidirectional display of tuneable messages/images, opening up new photonic applications.
Researchers at Arizona State University are exploring DNA-based storage technologies that can store and retrieve information securely. The project aims to create microscopic forms with encryption capabilities rivaling silicon-based semiconductor memories.
Researchers describe a technique for designing DNA nanostructures that can self-assemble into specific shapes. The new framework efficiently searches the space of possible solutions, avoiding undesired assemblies and overcoming challenges in molecular self-assembly.
Scientists have developed biocompatible TeSex nano-alloys that eliminate toxicity and enhance theranostic performances for precision medicine. The nano-alloys enable high-efficacy photothermal therapy under multimodal imaging guidance.
Researchers developed a novel spectroscopic technique to study stibnite nanostructures, revealing their potential as high-optical-quality waveguides. The technique allows for the measurement of spectrally resolved intensity profiles within individual nanodots, demonstrating that they can support four modes over a 200-nm bandwidth.
Researchers have developed nanostructures modeled on moth eyes that exhibit anti-icing properties, with the addition of a paraffin layer improving their performance. The nanostructure showed great improvement in freezing time and water repellency, making it suitable for applications such as aircraft wings and energy transmission systems.
Researchers at Penn State have discovered a previously unidentified nanostructure on insect surfaces that can be used to engineer stronger, more resilient water repellent coatings. These high-solid fraction textures may imbue additional water repelling benefits and could be applied to personal protective equipment (PPE) to better resis...
Researchers create Y-shaped DNA nanostructures that can fuse exclusively with similar ones, demonstrating controllability of liquid-liquid phase separation. The team also constructs a special DNA structure to bridge incompatible motifs, allowing for the creation of Janus-shaped droplets with localized cargo molecules.
Scientists from Japan and Italy use synchrotron X-ray total scattering and vibrational spectroscopies to determine the structural disorder and dimensions of a building unit in the heterogeneous Ziegler-Natta catalyst. The research sheds new light on the full elucidation of nanostructure in practical heterogeneous catalysts.
Scientists analyzed 13,000-year-old beetle fossils using X-ray scattering techniques and found that the expected photonic nanostructures were perfectly preserved. The blue and green structural colors studied had not changed over time, with modern beetles of the same genus showing very similar colors.
The study demonstrates that nanoscale magnetic gyroids can adopt a large number of stable states, exhibiting ferromagnetic behavior without a unique equilibrium configuration. The findings establish gyroids as a candidate system for research into unconventional information processing and emergent phenomena relevant to spintronics.
A team of researchers developed a microwave heating strategy for synthesizing a transition metal chalcogenide nanostructure that efficiently catalyzes CO2 electroreduction to carbon monoxide. The catalyst achieved a record conversion current of 212 mA cm-2 and selectivity of ~95.5%.
Researchers created a universal model of nanobubbles to study the behavior of trapped substances. The model predicts bubble shape under thermodynamic conditions and describes molecular structure.
Researchers analyze 13,000-year-old fossils to understand the origin of light-scattering nanostructures in insects, which create colorful iridescent colors. The study finds that these structures may have evolved as a means of camouflage, with similar color patterns maintained over hundreds of thousands of generations.
Researchers at KAIST developed a 3D hierarchically porous nanostructured catalyst that efficiently converts CO2 to CO, overcoming mass transport limitations. The new catalyst shows high selectivity and mass activity, promising large-scale applications for green energy.
Magnetic nanostructures show promise in biomedical applications, including cell separation and targeted cancer treatment. High tumor cell death rates were observed with weak magnetic fields, suggesting a strong mechanical force that destroys tumor cells.
Scientists at Harvard University created an all-glass, centimeter-scale metalens with nanostructures that can focus light, revolutionizing applications like microscopy, cameras, and sensors. The breakthrough enables mass production of large metalenses using conventional chip fabrication methods.
The new Focused Electron Beam Induced Deposition (FEBID) process enables the production of complex three-dimensional nanostructures with unprecedented control and predictability. It also facilitates modification of existing micro and nano components, allowing for efficient fabrication on uneven surfaces.
The study introduces a novel approach to creating GaAs/GaAsBi core-shell multi-layered NWs on Si substrates, focusing on structural deformation induced by Bi. The work paves the way for developing high-performance optoelectronic nanodevices with superior electronic and optical functions.
Researchers at UNM's Department of Physics and Astronomy have discovered that decreasing the density of nanoparticles in ordered arrays produces exceptional electric field enhancements. By making particles smaller and farther apart, interactions between nanoparticles are strengthened, resulting in stronger collective responses.
A study led by UC San Diego researchers identifies the root cause of lithium metal battery failure as bits of lithium metal deposits that break off from the anode during discharging. These deposits get trapped in the solid electrolyte interphase (SEI) layer, lowering Coulombic efficiency and causing batteries to fail. The findings coul...
Researchers have developed amorphous/crystalline heterophase PdCu nanosheets with high chemoselectivity and catalytic activity. The phase transformation behavior of these nanosheets affects their properties, leading to improved catalysis in hydrogenation reactions.
Researchers from University of Pittsburgh's Swanson School of Engineering created a nanostructure glass that takes inspiration from the wings of the glasswing butterfly to create a new type of glass that is clear across a wide variety of wavelengths and angles, as well as antifogging.
Researchers at TU Dresden have created a method to free trapped photons in OLEDs, boosting efficiency by up to 76.3%. The technique uses reactive ion etching to generate controllable nanostructures that can be tailored for optimal outcoupling.
Scientists at the University of Jyväskylä create optimized holey nanostructures that significantly reduce heat conduction by over a hundredfold. The study's findings have potential applications in thermoelectric power conversion, cooling, and bolometric radiation detection.
Ice lithography offers advantages in efficient 3D nanofabrication, including processing non-flat surfaces and observing nanostructures under the ice resist. The technology has great potential for further research and development.
A team of researchers found that the unique nanostructure of deep-sea dragonfish teeth is responsible for their transparency. The findings provide insights into this adaptation and could lead to the development of new transparent ceramics.
Researchers at Aarhus University and Novo Nordisk have developed a novel method for connecting proteins to DNA structures, enabling the assembly of large multi-antibody-like nanostructures. This innovation has potential applications in enhancing traditional therapies and understanding biological mechanisms.
A study published in ACS Central Science found that many DNA cage nanostructures are not taken up by cells, but rather degraded by enzymes outside the cell. The researchers' findings have significant implications for the use of DNA strands as a tool for delivering therapeutic agents into diseased cells.
New materials that conduct electricity are of great interest to physicists and materials scientists. Researchers have discovered a type of semimetal, niobium arsenide, which has about three times the conductivity of copper at room temperature.
Researchers used X-ray scattering to analyze nanoporous carbons produced under different synthesis conditions, revealing optimal pore size and shape requirements for electrochemical performance.
A Northwestern University team has developed a direct route to optimize spherical nucleic acids (SNAs) using a library approach and machine learning. This new method reveals the importance of structural variables in SNA efficacy, enabling researchers to design more effective cancer treatments.
Cornell chemists found that pores in two-dimensional molecular building blocks fundamentally change van der Waals forces, altering nanostructure assembly. The study provides new insight into self-assembly and design of complex nanostructures with diverse functionalities.
Researchers have created bioinspired artificial compound eyes with improved visual properties, enabling better motion detection and light sensitivity. The innovative structure consists of tiny independent repeating visual receptors called ommatidia, grown on top of convex glass domes with antireflective and water-repellent nanostructures.
Researchers from Singapore University of Technology and Design have engineered a new inexpensive nanomaterial with exceptional performance in visible and infrared light interaction. The material can be used to improve solar cells and optically detect minute traces of biomolecules, offering potential industrial relevance.
A new method for treating and preventing acute kidney injury (AKI) has been developed using tiny, self-assembling forms of DNA origami nanostructures. These nanostructures were shown to protect the kidneys from harm as effectively as the leading drug therapy and alleviate symptoms of AKI.
Researchers at Arizona State University have developed a method to create complex knot-like nanostructures in single-stranded DNA, with crossing numbers ranging from 9 to 57. This breakthrough enables the design of molecular structures with specific functions and unprecedented complexity.
Researchers have developed a CdS-CdSxTe1-x-CdTe core-shell nanobelt photodetector with high sensitivity and fast speed, outperforming traditional nanostructures. The detector has a responsivity of 1520 A/W and a detection spectrum covering the entire visible range.
Researchers develop computational tool to automatically create 3D print templates for nanostructures that correspond to user-defined colors. The new design tool has several advantages over previous methods, including a free-form structure that allows for greater flexibility and possibilities for additional coloring effects.
A team of researchers at Aalto University demonstrates nanoscale all-optical logic circuits, providing a vital step towards true optical computing. The study enables simple addition and subtraction operations using light, similar to a pocket calculator.
Researchers at Purdue University have developed a low-cost process to form smooth metallic circuits at the nanoscale using roll-to-roll newspaper printing. This technique enables the creation of touch screens and biosensors with improved performance.
A novel separation technique using density gradient ultracentrifugation is introduced for colloidal nanostructures. The method demonstrates versatility in separating nanoparticles according to their unique properties.
Researchers developed a gentle buffer exchange method to remove free ions, enabling DNA origami stability at low-magnesium levels. This breakthrough paves the way for various biomedical uses, including drug and enzyme delivery.
Researchers at Lehigh University have developed a new technique called peak force scattering-type scanning near-field optical microscopy (PF-SNOM) that reveals the 3D shape of polariton interaction around nanostructures with improved spatial resolution. The technique enables direct sectioning of vertical near-field signals for both thr...
Researchers at Caltech create eye implant inspired by butterfly wings' nanostructures, reducing measurement error and biofouling. The implant's surface flexes to measure intra-eye pressure, providing accurate readings regardless of angle.
Researchers use DNA-PAINT technique to visualize individual strands in DNA origami nanostructures, revealing the robustness of assembly and incorporation efficiency of staple strands. The results show that variations in structure formation speed have little influence on overall quality, but some sites remain unoccupied.
A recent study published in Science Advances has analyzed the nanostructure of chicken eggshells to better understand their role in embryo development. The findings suggest that specific characteristics of the eggshell could be genetically selected to produce healthier, more robust eggs.
Researchers at McGill University have discovered a unique nanostructure in chicken eggshells that contributes to their strength and fragility. The findings, published in Science Advances, could lead to improved food safety by enabling the selection of genetic traits in laying hens that produce consistently stronger eggs.
The study explores the thermoelectric properties of nanometer-thick tin selenide crafted in thin films of connected 'nanoflakes', achieving a significant power factor improvement through doping with silver. This material has potential for miniaturized, environmentally friendly, low-cost thermoelectric and cooling devices.
Researchers at Harvard's Wyss Institute have developed a new method for creating three-dimensional nanostructures using DNA 'bricks' that can self-assemble into structures with unprecedented complexities. The technology allows for the creation of nanostructures with complex cavities and potential applications in medicine and engineering.
Researchers at Karlsruhe Institute of Technology have successfully transferred the nanostructures from the wings of black butterflies, which can absorb light over a wide spectrum and improve thin-film solar cell efficiency. The optimized nanostructures enhance light absorption by up to 200 percent.