Researchers visualized flat band structures associated with exotic electronic phases in stacked graphene layers offset from each other by a “magic angle.” The work corroborates theoretical predictions and has significant implications for phenomena of technological and fundamental interest, such as topological phases and superconductivity. Read more »
Small but Still Mighty: Ultrafine Grains Produce Ultrastrong Metals
Researchers used in situ high-pressure diffraction to resolve a debate about whether a metal’s strength increases or decreases when its grain size decreases below a critical point. The results indicate that ultrastrong metals for future applications can indeed be achieved through grain-size refinement and grain-boundary engineering. Read more »
Toughening Mechanisms in Carp Scales at the Nanoscale
Scientists have characterized carp scales down to the nanoscale, using the ALS to watch how the fibers in the scales react as stress is applied. The resulting insights provide inspiration for the design of advanced synthetic structural materials with unprecedented toughness and penetration resistance. Read more »
2D Electronics Get an Atomic Tuneup
Researchers demonstrated a promising avenue for controlling atomic ordering in semiconductor alloys by engineering frustrated interactions in a 2D transition metal dichalcogenide (TMD). The work could lead to improved semiconductor performance for next-generation electronics such as optoelectronics, thermoelectrics, and sensors. Read more »
Thermoinduced Crystallization-Driven Self-Assembly of Bioinspired Block Copolymers in Aqueous Solution
Thermoinduced crystallization-driven self-assembly of polypeptoid-based block copolymers results in delicate control over the nanostructure in aqueous solution. This provides a convenient platform for comparing cellular uptake efficiency of nanostructured assemblies with various morphologies that are otherwise similar. Read more »
Scientists Dive Deep Into Hidden World of Quantum States
Researchers discovered two unique electronic properties—a Van Hove singularity and Fermi surface topology—at the interface between atomically thin oxide materials. The results suggest that the system is an ideal platform for investigating how to control superconductivity at the atomic scale in 2D materials. Read more »
Unexpected Rise in Ferroelectricity as Material Thins
Researchers showed that hafnium oxide surprisingly exhibits enhanced ferroelectricity (reversible electric polarization) as it gets thinner. The work shifts the focus of ferroelectric studies from more complex, problematic compounds to a simpler class of materials and opens the door to novel ultrasmall, energy-efficient electronics. Read more »
Off the Scales: Fish Armor Both Tough and Flexible
Humans have drawn technological inspiration from fish scales going back to ancient times: Romans, Egyptians, and other civilizations would dress their warriors in scale armor, providing both protection and mobility. Now, scientists have characterized carp scales down to the nanoscale, enabling them to understand how the material is resistant to penetration while retaining flexibility. Read more »
Controlling antiferromagnetic domains in patterned La0.7Sr0.3FeO3 thin films
Antiferromagnetic spintronics have gained interest because they can be controlled at terahertz frequencies and are insensitive to external magnetic fields. Due to dimensional confinement as well as microstructuring by ion implantation, the spin axis of an antiferromagnetic oxide can be robustly controlled in a deterministic way up to room temperature. Read more »
A Scalable Platform for Two-Dimensional Metals
Using a new method for stabilizing a two-dimensional (2D) metal on a large-area platform, researchers probed the origins of the material’s superconductivity. The work represents a notable milestone in advancing 2D materials toward broad applications in topological computing, advanced optics, and molecular sensing. Read more »
- « Previous Page
- 1
- …
- 9
- 10
- 11
- 12
- 13
- …
- 25
- Next Page »