Articles tagged with Two Dimensional Materials
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.
Researchers have developed scalable nanotechnology-based lightsails that can be fabricated in a single day, reducing the traditional 15-year process. These lightsails use laser-driven radiation pressure to propel spacecraft at high speeds, enabling rapid interplanetary travel and opening new possibilities for experimental physics.
This review explores recent progress in organic-inorganic heterojunction optoelectronic devices, highlighting their potential applications in various fields. The common preparation methods of these heterojunctions and their multifunctional device capabilities are discussed.
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.
Scientists have created a stable 2D material, InSbMoO6 (ISM), using lone pair electrons as chemical scissors. ISM exhibits strong nonlinear optical responses and good air stability, making it promising for integrated photonics applications.
Researchers have made a breakthrough in decoding the growth process of Hexagonal Boron Nitride (hBN), a 2D material with unique versatility. The findings reveal the formation of nanoporous hBN, expanding its potential environmental applications, including sensing and filtering pollutants.
Researchers at University of Groningen found that twisted tungsten disulfide sheets exhibit unexpected electronic properties, contradicting theoretical predictions. The study provides insights into the structural relaxation of 2D materials and enhances prediction and manipulation capabilities.
Researchers create multilayered chip design that doesn't require silicon wafer substrates, allowing for better communication and computation between layers. This breakthrough enables the construction of fast and powerful AI hardware comparable to supercomputers.
Researchers have developed a new method for producing one class of 2D material and supercharging its magnetic properties. By applying liquid phase exfoliation and chemical treatment, they were able to increase the material's coercivity by five-fold, making it more suitable for applications such as spin filtering, electromagnetic shield...
Researchers have discovered a highly electrically conductive material with low thermal conductivity, challenging the link between electrical and heat conduction. This finding could lead to new developments in building materials, performance apparel and energy storage solutions.
German physicist Christian Schneider has been awarded a European Research Council Consolidator Grant to study the optical properties of two-dimensional materials. His team plans to develop experimental set-ups to investigate the unique properties of these materials, which could lead to new applications in quantum technologies.
Researchers developed a deep learning-based method for identifying 2D materials using Raman spectroscopy, achieving high classification accuracy and reducing manual intervention. The new approach generates synthetic data to enhance datasets, enabling precise material characterization even with scarce experimental data.
A new technique enables the detection of individual atomic-scale defects in hexagonal boron nitride, a two-dimensional material. This advance accelerates the development of next-generation electronics and quantum technologies by providing a way to 'hear' the electronic noise in specially designed transistors.
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.
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.
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...
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.
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.
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.
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.
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.
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.
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.
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.
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...
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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 ...
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.
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 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.
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.
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.
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.
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 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.
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.
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.