Temporarily apart
Researchers induced fast switching between electrically neutral and charged luminescent particles in an ultra-thin, two-dimensional material. The result opens up new perspectives for optical data processing and flexible detectors.
Two Dimensional Materials
Articles tagged with Two Dimensional Materials
Researchers demonstrate metasurfaces that control thermal radiation in unprecedented ways
The research team has successfully demonstrated the control of thermal radiation by metasurfaces, achieving circularly polarized light with full control over emission direction. This breakthrough enables the creation of custom light sources with desired spectral, polarization, and spatial features for various applications.
Paving the way to extremely fast, compact computer memory
The layered multiferroic material nickel iodide (NiI2) has been found to have greater magnetoelectric coupling than any known material of its kind, making it a prime candidate for technology advances. This property could enable the creation of magnetic computer memories that are compact, energy-efficient and can be stored and retrieved...
Detecting defects in tomorrow’s technology
Researchers investigate defects in 2D materials, finding that some can improve electrical conductivity and shedding light on a common defect related to missing chalcogen atoms. Understanding these defects is crucial for refining processes needed to create precise TMD-based semiconductors.
USTC integrates wafer-scale 2D materials and metal electrodes with van der Waals contacts
Researchers developed an all-stacking technique to optimize interface contact between 2D materials and metal electrodes, achieving high-quality vdW contacts. The method resulted in improved device performance, including reduced off-state current and increased on-off ratio.
Turning infrared light visible
The Indian Institute of Science has fabricated a device to up-convert short infrared light to the visible range, utilizing a non-linear optical mirror stack made of gallium selenide. This innovation has diverse applications in defence and optical communications, including astronomy and chemistry.
2D materials: a catalyst for future quantum technologies
Scientists at the Cavendish Laboratory have discovered that a single 'atomic defect' in hexagonal boron nitride (hBN) exhibits spin coherence under ambient conditions and can be controlled with light. This finding has significant implications for the development of quantum technologies, particularly sensing technology.
PolyU researchers create 2D all-organic perovskites and demonstrate potential use in 2D electronics
Researchers at PolyU developed a new class of 2D all-organic perovskites with high dielectric constants, surpassing those of silicon dioxide and hexagonal boron nitride. These materials show promise for use in 2D electronics, enabling superior control over current flow and potential applications in capacitors and transistors.
Columbia researchers “unzip” 2D materials with lasers
Researchers at Columbia Engineering have developed a technique to modify 2D materials using lasers, creating tiny nanopatterns that can capture quasiparticles called phonon-polaritons. This method uses commercially available tabletop lasers and doesn't require an expensive cleanroom or etching equipment.
When does a conductor not conduct?
A new atomically-thin material has been discovered that can switch between an insulating and conducting state by controlling the number of electrons. This property makes it a promising candidate for use in electronic devices such as transistors.
Multilayer MoS2 photodetector with broad spectral range and multiband response
A multilayer MoS2 field-effect transistor photodetector exhibits a wide spectral detection range of up to 1550 nm, achieving high responsivity and specific detectivity under 480 nm illumination. The device demonstrates good output and transmission characteristics across multiple spectral regions.
Study shows: 2D materials rotate light polarization
A German-Indian research team has achieved a significant breakthrough in developing miniaturized optical isolators by utilizing ultra-thin two-dimensional materials. The researchers successfully rotated the polarization of visible light by several degrees under small magnetic fields, paving the way for on-chip integration of optical co...
New quantum material promises over 190% quantum efficiency in solar cells
Researchers from Lehigh University have developed a material that promises over 190% quantum efficiency in solar cells, exceeding the theoretical limit for silicon-based materials. The material's 'intermediate band states' enable efficient absorption of sunlight and production of charge carriers.
Novel fabrication technique takes transition metal telluride nanosheets from lab to mass production
Researchers have developed a novel technique to produce high-quality transition metal telluride nanosheets using chemical solutions, overcoming the challenges of scalability and toxicity. The technique enables the mass production of these ultra-thin materials with potential applications in electronics, energy storage, and sensing.
Physics-based predictive tool will speed up battery and superconductor research
Researchers from the University of Tokyo have developed a physics-based predictive tool that quickly identifies stable intercalated materials for advanced electronics and energy storage devices. By analyzing over 9,000 compounds, the tool uses straightforward principles from undergraduate chemistry to predict host-guest stability.
New adhesive tape picks up and sticks down 2D materials as easily as child’s play
Researchers developed a UV-sensitive tape that can transfer 2D materials like graphene with ease, reducing damage and increasing efficiency. The new technology allows for flexible plastics to be used in device substrates, expanding potential applications.
Breaking boundaries in quantum photonics: Groundbreaking nanocavities unlock new frontiers in light confinement
Researchers create nanocavities that confine light for significantly longer durations than previous studies, overcoming traditional limitations. The discovery utilizes hyperbolic-phonon-polaritons to achieve unparalleled subwavelength volume and extended lifetime.
Rice research unveils key dynamics of 2D nanomaterials with view to larger-scale production
Researchers at Rice University have mapped the diffusion of graphene and hexagonal boron nitride in an aqueous solution, a crucial step towards larger-scale production of these 2D materials. The study found that the size of the material affects its movement speed, with hexagonal boron nitride moving faster than graphene.
Manipulated hafnia paves the way for next-gen memory devices
Researchers outline new method to stabilize bulk hafnia in metastable ferroelectric and antiferroelectric states, paving the way for non-volatile memory technology. The approach requires less yttrium, improving material quality and purity.
New 2D material with super-heavy electrons
Researchers at Uppsala University and Columbia University have created a new 2D quantum material, CeSiI, with atoms-thin layers of cerium, silicon, and iodine. The material features super-heavy electrons with an effective mass up to 100 times that of ordinary materials.
Revolutionizing stable and efficient catalysts with Turing structures for hydrogen production
Researchers from City University of Hong Kong developed a novel strategy to engineer stable and efficient ultrathin nanosheet catalysts using Turing structures. This approach effectively resolves the instability problem associated with low-dimensional materials in catalytic systems, enabling efficient and long-lasting hydrogen production.
2D material reshapes 3D electronics for AI hardware
Researchers developed a novel approach to integrate multiple functions into a single chip using monolithic 3D integration of layered 2D materials. This technology offers unprecedented efficiency and performance in AI computing tasks, enabling faster processing, less energy consumption, and enhanced security.
Scaling up nano for sustainable manufacturing
Researchers have developed a new self-assembling nanosheet that can create functional and sustainable nanomaterials for various applications. The material is recyclable and can extend the shelf life of consumer products, enabling a sustainable manufacturing approach.
Solving quantum mysteries: New insights into 2D semiconductor physics
Researchers from Monash University have introduced a new theoretical study on quantum impurities, exploring their behavior in two-dimensional semiconductors. The 'quantum virial expansion' method sheds light on the complex interactions between impurities and their surroundings in 2D materials.
Molybdenene – the "metallic" relative of graphene
Scientists have successfully produced a thin sheet of molybdenum, similar to graphene, with impressive properties. Molybdenene exhibits mechanical stability, freely moving electrons, and is an interesting candidate for catalysts and advanced imaging techniques.
CityU achieves major breakthrough in highly efficient electrocatalyst for clean energy
A research team at City University of Hong Kong has developed a highly efficient electrocatalyst that enhances hydrogen generation through electrochemical water splitting. The catalyst, composed of transition-metal dichalcogenide nanosheets with unconventional crystal phases, exhibits superior activity and stability in acidic media.
Breakthrough: Peering into nanofluidic mysteries one photon at a time
Scientists have developed a new approach to study molecular behavior in confined spaces, allowing for real-time tracking of individual molecules within nanofluidic structures. This breakthrough enables the use of single-photon emitters as nanoscale probes, providing unprecedented insights into molecular properties and behaviors.
Infrared avalanche photodiodes from bulk to 2D materials
Researchers have developed infrared avalanche photodiodes using bulk and 2D materials, offering improved detection efficiency and flexibility in heterostructure design. The devices exhibit exceptional capabilities such as mechanical flexibility and strong light-matter coupling.
From lab to market: A look at graphene's societal impact
The Graphene Flagship project has produced significant contributions to Europe's GDP and GVA, with an estimated return on investment of 14.5-fold. By 2030, the project aims to create over 81,000 jobs internationally.
Making big leaps in understanding nanoscale gaps
Researchers at Brookhaven Lab's Center for Functional Nanomaterials have created a new layered structure with unique energy and charge transfer properties. The discovery could lead to advancements in technologies such as solar cells and optoelectronic devices.
Layered and traditional semiconductors heterogenous integration open door for post Moore era
Scientists have demonstrated techniques to fabricate layered semiconductors with suitable bandgap and band structure, offering a new class of materials in photoelectronic applications. Heterogeneous integration of TMDs and traditional semiconductors enables the exploration of next-generation electronic and optoelectronic devices.
Ribbons of graphene push the material’s potential
Researchers at Columbia University have developed a new fabrication technique to create devices with uniform twist angles and strain profiles in graphene. This allows for the systematic exploration of the material's properties and behavior, potentially leading to breakthroughs in quantum materials science.
Unveiling the potential of radiofrequency-operated 2D biochemical sensor in the internet-of-things era
Researchers have developed ultra-thin and flexible 2D biochemical sensors with high sensitivity for detecting target substances, revolutionizing sensing technology. However, integrating these sensors into comprehensive systems for large-scale industrial manufacturing poses significant challenges.
An innovative addition to the chemist’s ‘toolbox’
Researchers at the University of Missouri have developed a new type of nanoclay material that can be customized to perform specific tasks. This breakthrough could lead to advances in fields such as medical science, environmental science, and more.
Researchers put a new twist on graphite
A team of researchers at the University of Washington has discovered a way to imbue bulk graphite with physical properties similar to those of graphene, a single-layer sheet. This breakthrough could unlock new approaches for studying unusual and exotic states of matter and bring them into everyday life.
Structure of the elusive boron monoxide finally determined after 83 years
A team from Ames National Laboratory solved the structure of boron monoxide, a compound first discovered in the 1940s, using new nuclear magnetic resonance (NMR) methods and techniques. The researchers found that the material forms nanosheets with a turbostratic arrangement.
Front cover highlights "innovative approach" of research into 2D materials
Lancaster University researchers have developed a novel scanning thermal microscopy approach to directly measure the heat conductivity of two-dimensional materials. This breakthrough enables the creation of efficient waste heat scavengers generating cheap electricity, new compact fridges, and advanced optical and microwave sensors and ...
2D nanosheets for sustainable carbon capture
A team of researchers from SUTD and A*STAR has developed a quick and energy-efficient technique to produce 2D mica nanosheets, which have shown an 87% higher CO2 adsorption capacity than bulk mica. The nanosheets' high specific surface area and porosity enable effective carbon capture.
Spectroscopic micro-ellipsometer unveils atomic-level thickness measurements of 2D materials: Hebrew University secures patented technology for revolutionary innovation
Researchers from Hebrew University developed a microscope-integrated ellipsometer that enables fast and precise measurements of thin-film thicknesses in small areas. The Spectroscopic Micro-Ellipsometer successfully maps the thicknesses of diverse 2D material flakes, determining their number of atomic layers.
Researchers achieve coherent control of two-dimensional material solid-state spin defects
Researchers have successfully isolated individual color centers in hexagonal boron nitride (hBN) and achieved coherent control of an ultrabright single spin with high probability. This breakthrough enables optically controlled spins, opening up new possibilities for quantum information processing.
Smart in-memory light sensors perform image recognition
Researchers at KAUST developed smart digital image sensors that can recognize images with high accuracy, using a charge-trapping 'in-memory' sensor sensitive to visible light. The devices have an extremely long-lived retention time of up to 10 years and can perform optical sensing, storage, and computation.
What do we know about the mechanics of two-dimensional materials?
Researchers comprehensively reviewed recent discoveries in 2D material mechanics, highlighting elastic properties, failure, and interfacial behaviors. Computational advancements are crucial for understanding dynamic behaviors and practical applications.
Artificial visual perception nervous system using solution-processable MoS2-based in-memory light sensor
Researchers have developed a single sensing-storage-processing node using solution-processable MoS2-based metal–oxide–semiconductor devices, mimicking the human visual system. The device can optically sense, store, and process data, improving response time, area, and energy efficiency.
Fabrication and applications of van der Waals heterostructures
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.
Strong ultralight material could aid energy storage, carbon capture
Researchers engineered a lightweight material by fine-tuning interlayer interactions in 2D polymers, retaining desirable mechanical properties even as a multilayer stack. The material's strong interlayer interaction is attributed to hydrogen bonding among special functional groups.
Can a solid be a superfluid? Engineering a novel supersolid state from layered 2D materials
Researchers predict that layered electronic 2D semiconductors can host a quantum phase of matter called the supersolid. A solid becomes 'super' when its quantum properties match those of superconductors, simultaneously having two orders: solid and super. The study reports the complete phase diagram of this system at low temperatures.
New simulation reveals secrets of exotic form of electrons called polarons
Researchers have developed a new simulation method to study polarons in 2D materials, which could lead to breakthroughs in OLED TVs and hydrogen fuel production. The study uses quantum mechanical theory and computation to determine the fundamental properties of polarons in 2D materials.
Chemical scissors enable structural editing of layered materials
Researchers developed a chemical scissors-mediated structural editing strategy to regulate the structure and elemental composition of MAX phases/MXenes. This approach enables the creation of novel MAX phase and MXene materials with improved functional applications.
Nano cut-and-sew: New method for chemically tailoring layered nanomaterials could open pathways to designing 2D materials on demand
Researchers developed a chemical scissor to split and stitch nanoscopic layers of two-dimensional materials, opening pathways to sustainable energy technologies. This new process allows for structurally splitting, editing, and reconstituting layered materials with exceptional properties.
Bending 2D nanomaterial could ‘switch on’ future technologies
Researchers discovered a property in single-layer ferroelectric materials that allows them to bend in response to an electrical stimulus. This bending behavior enables the creation of nano-scale switches or motors, which can be controlled using electrical signals.
SUTD researchers developed novel 2D material with virus to kill cancer cells
Scientists from SUTD design a novel thermal-based therapy nano-system that destroys over 20% of pancreatic cancer cells using microsecond electrical pulses, improving cancer cell targeting accuracy and bio-compatibility. The introduction of the M13 virus enhances electro-thermal therapy performance by assembling more on cancer cells.
Two/quasi-two-dimensional perovskite-based heterostructures: Construction, properties and applications
Researchers discuss the construction, properties, and applications of 2D/quasi-2D perovskite-based heterostructures. These heterostructures offer novel functionalities for photovoltaic solar cells, LEDs, and photodetectors.
MIT engineers grow “perfect” atom-thin materials on industrial silicon wafers
Researchers at MIT have developed a method to fabricate ever-smaller transistors from 2D materials by growing them on existing silicon wafers. The new method, called nonepitaxial, single-crystalline growth, enables the production of pure, defect-free 2D materials with excellent conductivity.
A crystal shape conundrum is finally solved
Researchers at Rice University have developed a method to predict the shapes of crystals that lack symmetry by assigning arbitrary latent energies to their surfaces. This approach uses closure equations with arbitrary parameters to mimic nature's solution, allowing for accurate crystal shape predictions.
How “2D” materials expand
Scientists have developed a method to accurately measure the thermal expansion coefficient of 2D materials when heated, which could help engineers design next-generation electronics. The approach uses laser light to track vibrations of atoms in the material, allowing for precise measurements and confirming theoretical calculations.
Magnetism or no magnetism? The influence of substrates on electronic interactions
Researchers at Monash University found that electric fields and applied strain can turn magnetism on and off in two-dimensional metal-organic frameworks. This discovery could lead to applications in magnetic memory, spintronics, and quantum computing.
Electron liquids on the cutting edge
Researchers have controlled a one-dimensional electron fluid to an unprecedented degree, discovering new properties of Tomonaga-Luttinger liquids in two-dimensional materials. The team's findings could pave the way for more robust quantum computers with enhanced fault-tolerance.
New era of two-dimensional ferroelectrics
Researchers review emerging field of 2D ferroelectric materials with layered van-der-Waals crystal structures, offering new properties and functionalities not found in conventional materials. These materials show easily stackable nature, making them attractive as building blocks for post-Moore's law electronics.
Trapping polaritons in an engineered quantum box
Australian researchers have engineered a quantum box for polaritons in a two-dimensional material, achieving large polariton densities and a partially 'coherent' quantum state. The novel technique allows researchers to access striking collective quantum phenomena and enable ultra-energy-efficient technologies.
Blocking the buzz: MXene composite could eliminate electromagnetic interference by absorbing it
Researchers at Drexel University have developed a composite material that can absorb and dissipate electromagnetic waves, reducing electromagnetic interference. The MXene-polymer coating has shown to be highly effective in absorbing energy at greater than 90% efficiency.