Nanotechnology Spotlight – Latest Articles

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Showing Spotlights 1 - 8 of 292 in category All (newest first):

 

One-dimensional Weyl semimetals as unique topological materials for future electronics

nanoribbonsRecent investigations suggest that topological semimetals reveal unique properties that can enable unprecedented functionalities for future electronics. New research results shed light on the specifics of electron transport in quasi-one-dimensional topological Weyl semimetals and can be important for their proposed applications as downscaled interconnects. The results obtained in this work can be used for developing assessment methodologies for the reliability of topological semimetals.

Nov 22nd, 2022

One-unit-cell thick semiconductors with room-temperature magnetism

2D-sheetThe discovery of magnetism in two-dimensional (2D) ultrathin crystals opens up opportunities to explore new physics and to develop next-generation spintronic devices. However, 2D magnetic semiconductors with Curie temperatures higher than room temperature have rarely been reported. Researchers now show that high-quality, nonlayered cobalt ferrite nanosheets as thin as a single unit cell can be synthesized via van der Waals epitaxy.

Nov 15th, 2022

Electrical gating of the charge-density-wave quantum phases opens up innovative electronic applications

charge-density-wave-domainsThe 1T polymorph of TaS2 is one of the prominent members of the quasi-2D van der Waals materials that reveal several charge-density-wave (CDW) phase transitions in the form of resistivity changes and hysteresis. However, despite numerous attempts, the electrical gating of the CDW phase, which is needed for many practical applications, has remained elusive - until now. Researchers report electrical gating of the CDW quantum phases in h-BN/1T-TaS2.

Nov 1st, 2022

Precise high-speed trajectory tracking and multi-target detection with a novel position sensitive detector

photodetectorResearchers demonstrate a multitarget real-time trajectory tracking system by using a time-division position sensitive detector (TD-PSD) system by employing a graphene-silicon Schottky heterojunction. The system allows for multi-target real-time trajectory tracking with a maximum image output frame rate of up to 62 000 frames per second (which is superior to commercial optical high-speed motion capture systems of about 1000 frames per second). This breaks the bottleneck in precise high-speed trajectory tracking and multi-target detection of traditional position sensitive detectors.

Oct 10th, 2022

MXene with its X factor may help downscaling 2D transistors

transistorResearchers show how MXenes' rich chemistry can be used to create doping-free 2D transistors with intrinsically low resistive contacts while maintaining balance mode operation. With a suitable functional termination, MXenes can become a semiconductor or a metal with a different work function. The researchers exploit this unique property of MXene to propose a Schottky barrier transistor, which can be implemented with a bare MXene by converting it to a semiconductor in the channel region with strategic functionalization.

Sep 27th, 2022

A memristive forming strategy for lowering the contact resistances of two-dimensional semiconductors

Two-dimensional (2D) semiconductors, like transition-metal dichalcogenides, have become a competitive alternative to traditional semiconducting materials in the post-Moore era, and caused worldwide interest. However, before they can be used in practical applications, some key obstacles must be resolved. One of them is the large electrical contact resistances at the metal-semiconductor interfaces. Researchers have proposed a brand-new contact resistance lowering strategy of 2D semiconductors with a good feasibility, a wide generality and a high stability.

Sep 5th, 2022

Scientists create a heterostructure of diversely behaving atomic layers within a single bulk material

crystal-structureResearchers have developed a new method to create interlayered bulk materials, comprising atomically-thin layers with highly diverse electronic properties - from insulating to superconducting. The atomistic quantum mechanical simulations and electron microscopy imaging illuminate the origin of this spectacularly diverse behavior between adjacent layers of a single material. Its alternating layered structure makes this material a true 2D superconductor in bulk form and opens a plethora of intriguing questions related to the effect of interlayer coupling on the superconducting behavior.

Aug 30th, 2022

High-performance graphene nanomesh filtration membranes inspired by cell walls

nanofiltrationGraphene-based membranes have attracted considerable attention as promising candidates for new filtration technologies for filtering out nanoparticles, organic molecules, and even small inorganic salt ions. Putting a nature-inspired spin on the fabrication of high-performance graphene membranes for tricky oil/water separations - even in stable emulsions - researchers have demonstrated a graphene nanomesh membrane that possessed high hydrophilicity, super-oleophobicity and low oil adhesion underwater.

May 31st, 2022