Showing Spotlights 33 - 40 of 313 in category All (newest first):
Using a combination of 3D printed template and self-assembly allows the fabrication of materials with complex Lego-like models with tailorable feature size crossing a record seven orders of magnitude - from nanometers to centimeters. This allows the fabrication of graphene structures with tunable mechanical properties, from super rigid (modules one order of magnitude higher than other ultralight materials) to superelastic (able to recover from extreme 95% compression).
May 10th, 2022
By utilizing the natural atomic thickness, flexibility, and mechanical strength, flexible devices based on 2D materials are paving the new way to achieve novel flexible device applications that include flexible transistors, flexible optoelectronics, flexible sensors and flexible supercapacitors. Furthermore, mechanical robustness and their atomic thickness provide 2D materials with high transparency in the visible range and makes them suitable for flexible, transparent electronic devices that are subject to mechanical strain and cyclic stress.
May 5th, 2022
Polaritons in biaxial crystals offer a promising route to manipulate nanoscale light-matter interactions. The dynamic modulation of their dispersion is of great significance for future integrated nano-optics but remains challenging. Researchers theoretically demonstrate and experimentally verify such tailored polaritons at the interface of heterostructures. The interface engineering may shed new light on programmable polaritonics, energy transfer, and neuromorphic photonics
Apr 22nd, 2022
The huge variety of vdW layered 2D materials provides a large potential for advanced 2D nanoelectronics. However, for scalable applications, all vdW layered 2D materials face a common challenge: transitioning from micrometer-scale 2D flakes to wafer-scale. This is necessary for scaling up 2D vdW materials application in the high-end semiconductor industry. A new review describes the structures, properties, wafer-scale growth methods, and applications of a number of representative vdW layered 2D materials.
Mar 8th, 2022
When two or more 2D materials are placed on top of each other their properties change and a material with novel hybrid properties emerges. These materials are called van der Waals heterostructures. By stacking free-standing membranes under observation in an electron microscope, researchers have demonstrated almost arbitrary 3D structures by stacking atomically thin materials, similar to a 3D printing process, where each atomic layer can be chosen from the vast library of available 2D materials.
Feb 7th, 2022
By replacing gold film with graphene, researchers have improved the performance of opto-thermoelectric tweezers. These new graphene-based opto-thermoelectric tweezers benefits from a much broader working wavelength range and a larger trapping area. They extend the working wavelength from visible band to the infrared and far-infrared bands, which are less harmful to biological samples. Owing to the ultrahigh thermal conductivity of graphene, this technology can achieve large-area particle trapping or concentration.
Jan 28th, 2022
A novel multidimensional characterization approach that combines several characterization techniques, allowing to get materials properties of the heterostructure with (almost) nanometer resolution. The method combines several microscopy tools into a multidimensional imaging tool that allows the inspection of materials' optical properties at a resolution much higher than with regular optical microscopy. At the core of this method are nanometer-resolution optical maps that we obtained with scattering Scanning Near-field Optical Microscopy (sSNOM).
Jan 22nd, 2022
This review summarizes the current industrial graphene synthetic and analytical methods, as well as recent academic advancements in larger-scale or sustainable synthesis of graphene. Specific emphasis is placed on recent research in the use of flash Joule heating as a rapid, efficient, and scalable method to produce graphene and other 2D nanomaterials. Challenges and opportunities in the larger-scale synthesis of graphene and a perspective on the broader use of flash Joule heating for larger-scale 2D materials synthesis are discussed.
Jan 19th, 2022