Articles tagged with Superlattices
Researchers have demonstrated a technique to fabricate large-area oxide twistronic materials with controlled twist angles and strong chemical bonding between layers. This allows for the creation of high-crystallinity oxide moiré superlattices, which could enable new functionalities in devices.
Scientists at Nanjing University and Washington State University developed a three-dimensional ordered mesoporous carbon skeleton with Ni single atom support using superlattice blotting. The resulting Ni-N₂S₂ and Ni-N₃P catalysts exhibited excellent electrocatalytic activity, reaching overpotents of 239 mV (OER) and 90 mV (HER).
Twisted trilayer graphene creates a pattern that changes the material's properties and can turn it into a superconductor. Researchers used a microscope to probe the properties of supermoiré patterns, revealing new states of matter with precisely controllable properties.
Researchers at The University of Tokyo have discovered a previously unseen moiré pattern in tungsten ditelluride bilayers, featuring one-dimensional bands. The pattern occurs at specific twist angles and has important implications for the optoelectronic properties of materials.
Scientists at the University of Rochester have discovered a way to create artificial atoms within twisted monolayers of molybdenum diselenide, retaining information when activated by light. This breakthrough could lead to new types of quantum devices, such as memory or nodes in a quantum network.
Scientists have successfully imaged the dynamic assembly of bilayer covalent organic frameworks in solution, providing new insights into controlled stacking and moiré superlattice formation. The breakthrough enables the creation of large-area two-layer 2D COFs with unique electronic properties.
Researchers demonstrated a novel mechanism for generating ultrafast spin currents above the Curie temperature in 2D magnetic materials using laser-enhanced proximity effect. This discovery enables the creation of terahertz radiation and opens up new possibilities for spintronics.
A research team creates an artificial kagome superlattice to manipulate Dirac bands in graphene, achieving dispersion-selective band modulation. The high-order potential allows for fine-tuned control over the band structure.
A study at Nagoya University reveals the formation of a superlattice structure in gallium nitride and magnesium, leading to enhanced hole transport and compressive strain. This breakthrough has potential applications in improving GaN-based devices for energy-efficient electronics.
Researchers visualize chiral interface state at atomic scale for the first time, allowing on-demand creation of conducting channels. The technique has promise for building tunable networks of electron channels and advancing quantum computing.
Researchers at Brookhaven National Laboratory have developed a universal method for producing functional 3D metallic and semiconductor nanostructures using DNA. The new method produces robust nanostructures from multiple material classes, opening opportunities for 3D nanoscale manufacturing.
Researchers propose a new way to control moiré flatbands by adjusting the band offset of two photonic lattices, enabling the creation of novel multiresonant moiré devices. This breakthrough opens new opportunities in moiré photonics and promises to inspire future explorations into innovative moiré devices.
Researchers have discovered Rydberg moiré excitons in WSe2 monolayer semiconductor adjacent to graphene, exhibiting multiple energy splittings and a pronounced red shift. The discovery holds promise for applications in sensing and quantum optics due to the strong interactions with the surroundings.
A team at the University of Washington has made a breakthrough in quantum computing by detecting signatures of 'fractional quantum anomalous Hall' (FQAH) states in semiconductor materials. This discovery marks a significant step towards building stable qubits and potentially developing fault-tolerant quantum computers.
Researchers demonstrated a 300-fold increase in electron-phonon coupling strength by reducing dimensionality, paving the way for novel engineering opportunities. The enhancement was attributed to non-local nature of coupling in synthetic SRO/STO superlattices.
Researchers propose a device design that can take the efficiencies of 2D TMDC devices from 5% to 12%, doubling the weight-saving potential. This breakthrough could address the energy supply challenges in space exploration and settlements, where traditional solar cells are too heavy to be transported by rocket.
Scientists have successfully created a superlattice of lead sulfide semiconducting colloidal quantum dots that exhibits the electrical conducting properties of a metal. This breakthrough could lead to improved capabilities in devices such as solar cells, biological imaging, and quantum computing.
The article discusses the fabrication and applications of van der Waals heterostructures (vdWHs), which have unique properties and potential for exploring condensed matter physics. Various strategies for fabricating vdWHs were developed in the past decade, leading to promising functionalities in diverse fields.
Researchers have presented an overview of recent progress in moiré photonics and optoelectronics, highlighting the emergence of novel quantum phenomena and their potential applications. Moiré superlattices introduce a new paradigm for engineering band structures and exotic quantum states.
Researchers have successfully developed chemically stable, tunable-bandgap 2D nanosheets from perovskite oxynitrides, opening new possibilities for sustainable technologies such as photocatalysis, electrocatalysts, and electronics. The nanosheets exhibit superior proton conductivity and excellent photocatalytic activity.
Researchers have developed a novel substrate boosting square-tensile-strain, promoting four-variant spontaneous polarization and defect-dipoles. This breakthrough enables reversibly controlled ternary polar states and ferroelectric bias.
Scientists developed a novel exciton with intralayer charge-transfer characteristics in a moiré superlattice, exceeding conventional parameterized models. The discovery has potential applications in optical sensors and communication technology.
Researchers have successfully created a highly conductive metamaterial using self-organized quantum dots, maintaining their optical properties while displaying the highest electron mobility reported for quantum dot assemblies. This breakthrough paves the way for new generation of opto-electronic applications.
Researchers from Northwestern University have synthesized open-channel superlattices with pores ranging from 10 to 1,000 nanometers in size. The new findings will enable the use of these colloidal crystals in molecular absorption and storage, separations, chemical sensing, catalysis, and optical applications.
Researchers at Rice University have created 2D chiral superstructures using three-sided pyramids, which could lead to breakthroughs in metamaterials. The structures, composed of ultrathin assemblies of particles, incorporate left-handed and right-handed domains and exhibit unique optical properties.
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 create a desorption-tailoring strategy to realize efficient p-doping in Al-rich AlGaN, achieving a high hole concentration of 8.1×10^18 cm^-3 at room temperature. The approach also enables vertical miniband transport of holes, satisfying device requirements.
Researchers employed microscopy techniques to study the atomic structure and vibrations of perovskite oxides in superlattices. The discovery enables the rational design of materials with unique photonic and phononic properties.
The study reveals the existence of moiré trions, confined electronic excited states that exhibit novel characteristics and differ from conventional trions. Moiré trions can emit single photons, making them a feasible optical source for quantum information technology.
A team of researchers has developed a new method to combine perovskite nanocubes with spherical nanoparticles to form structured, multi-part nanocrystals. These materials display fundamental new properties such as superfluorescence, which can be harnessed for practical uses like ultrabright quantum light sources.
A research team at USTC reports a new class of axial superlattice nanowires (ASLNWs) that enable large lattice-mismatch tolerance and vast material combinations. They achieve this by designing an axial encoding methodology for predictable, high-precision synthesis.
Researchers at Northwestern University have developed a new approach to quantum device design, producing the first gain-based long-wavelength infrared photodetector using band structure engineering. The advanced photodetector offers enhanced sensitivity for next-generation LWIR photodetectors and focal plane array imagers.
A joint research led by City University of Hong Kong has built an ultralow-power consumption artificial visual system to mimic the human brain. The device achieves a record-low energy consumption down to sub-femtojoule per synaptic event, outperforming human brain synapses.
The discovery of Brown-Zak fermions in graphene-based superlattices offers a new perspective for electronic devices operating under extreme conditions. The high mobility of these quasiparticles allows them to travel long distances without scattering, making them suitable for ultra-high frequency transistors.
Cornell researchers have successfully trapped electrons in a two-dimensional semiconducting structure, forming the long-hypothesized Wigner crystal. The team achieved this by stacking two-dimensional semiconductors and using an optical sensing technique to observe the resulting electron crystals.
Researchers at Stony Brook University have developed a new superlattice material that exhibits high temperature and tunable electrical transport properties. This finding has the potential to improve energy-efficient technologies by conducting dissipationless current without energy loss.
Researchers at City College of New York create topological magnetic superlattice material that can conduct electrical current without dissipation and lost energy. The discovery has the potential to advance energy-efficient technologies and enable topological superconductivity.
A Cornell-led collaboration has successfully created a solid-state platform to simulate the Hubbard model in two dimensions, mapping a longstanding conundrum in physics: the phase diagram of the triangular lattice Hubbard model. The team observed a Mott insulating state and mapped the system's magnetic phase diagram.
Researchers at Columbia University have developed a new way to control the properties of two-dimensional materials by adjusting the twist angle between them. By creating multiple moiré patterns in a graphene-boron nitride device, they were able to study the effects of coexisting moiré superlattices on a layer of graphene.
Researchers create biofuel precursors from municipal waste and discover unique optical phenomena in moire superlattices. A new model uses cellphone data to improve urban building occupancy estimates, aiming to enhance energy efficiency.
Scientists at the University of Basel create a three-layer superlattice using graphene and boron nitride, producing new electronic material properties.
Researchers at Berkeley Lab develop method to turn ordinary semiconducting materials into quantum machines, exhibiting extraordinary electronic behavior. The discovery could help revolutionize industries aiming for energy-efficient electronic systems and provide platform for exotic new physics.
Researchers discovered coherent resonance and stochastic resonance in an excitable semiconductor superlattice, enabling faster detection of weak signals. This breakthrough can be used to extract information from noisy data, analyze astronomical observations, and process image signals.
Researchers have created new 'switches' that respond to light using combined light-sensitive molecules with layers of graphene and other 2D materials. This technology could lead to programmable applications in smart electronics, sensors, and flexible devices.
A UCLA research team has developed a method to create artificial superlattices comprising ultra-thin two-dimensional sheets with drastically different atomic structures. This allows for the confinement of electronic and optical properties to single active layers, enabling faster and more efficient semiconductors and advanced LEDs.
Researchers at Northwestern University develop a technique to create new classes of optical materials with precise control over particle architectures. The method combines DNA-programmed self-assembly with top-down lithography, resulting in optically active superlattices that can exhibit almost any color across the visible spectrum.
Researchers from Aalto University Finland have developed a method to assemble metal-protein superlattice wires using viruses and nanoparticles. The study demonstrates that combining native Tobacco Mosaic Virus with gold nanoparticles can lead to high-aspect-ratio superlattice wires with controlled optical properties.
Researchers observe nanocrystals forming superlattices in seconds, enabling fine-tuning of precision materials. The discovery will help create novel materials for magnetic storage, solar cells, optoelectronics, and catalysts.
Researchers at University of Science and Technology of China have developed a new type of synthetic antiferromagnet with correlated oxide multilayers, overcoming the 'dead layer' effect that hindered previous progress. The team achieved layer-resolved magnetic switching in La2/3Ca1/3MnO3/CaRu1/2Ti1/2O3/NdGaO3 multilayers.
A Northwestern University study has engineered a cost-effective laser design that outputs multi-color lasing, offering potential benefits in optical fibers, medical imaging, and sensing applications. The new technology allows for stable multi-modal nanoscale lasing with fine control over color and intensity.
Researchers from Northwestern University developed a new approach to improve night-vision cameras using strained-layer indium arsenide/indium arsenide antimonide type-II superlattices. The new design enables infrared cameras to perform imaging at higher temperatures, reducing the need for cryogenic cooling power.
Researchers at the University of the Witwatersrand have developed a technique to calculate the transport properties of carbon superlattice devices, enabling the creation of high-frequency electronic and optoelectronic devices. This breakthrough could lead to significant advancements in industries such as biology, space technology, and ...
Researchers have developed a method to observe nanocrystal self-assembly in real-time, shedding light on the complex structures' formation. The technique uses synchrotron X-ray scattering and imaging, allowing for the direct manipulation of superlattices.
Researchers have observed polar vortices in ferroelectric materials, which could lead to new states of matter and applications in data storage and processing. The discovery was made using scanning transmission electron microscopy and X-ray diffraction studies.
Researchers developed a new method to study metal-organic frameworks (MOFs) storing gases, revealing cooperative gas-gas interactions and superlattice structures. The discovery holds promise for designing more efficient MOFs for carbon capture and hydrogen fuels.
Researchers at Northwestern University have successfully created a multiferroic material by sandwiching a polar metallic oxide between an insulating material. This breakthrough design strategy realizes elusive multiferroic properties, offering potential applications in low-power electronics, logic processing, and memory storage.
Researchers at MIT and Manchester University have created a new material that allows electrons to move at controllable angles, resulting in more efficient computing. This breakthrough enables the development of transistors with lower energy consumption.
Hyperbolic metamaterials, created by Purdue University researchers, offer promising advances in optics and electronics. The ultra-thin crystalline films, composed of metal and dielectric materials, could lead to powerful microscopes, quantum computers, and high-performance solar cells.
A combined computational and experimental study reveals arrays of gear-like molecular-scale machines that rotate in unison when pressure is applied to self-assembled silver-based superlattices. The superlattice structures form layers with hydrogen bonds acting as 'hinges' to facilitate rotation.
Scientists at Berkeley Lab have provided the first 'unambiguous demonstration' of phonon-based lasers by observing coherent phonon transport in superlattices. This breakthrough could lead to new advances in heat transfer applications and the development of phonon lasers.