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Overlapping two 3D lattices with a relative twist opens the door to synthesizing crystals with diverse symmetries that showcase nontrivial band structures and novel properties.

When two identical periodic lattices overlap in space, with one twisted at an angle relative to the other, they form moiré lattices. The best-known examples are formed from stacked and rotated 2D sheets. These structures can possess fascinating properties not seen in their component layers. Twisted bilayer graphene, for example, can exhibit superconductor and Mott insulator behavior [1, 2]. Ce Wang of Tongji University in China and his colleagues now propose how to construct a 3D moiré lattice using two cubic optical lattices hosting ultracold atoms [3]. The researchers mathematically describe how two simple periodic structures, twisted relative to each other, can lead to 3D optical moiré patterns (Fig. 1). The result is a crystal-like structure with emergent properties that differ from those of the underlying simple lattices.

Far beneath the lush landscape of southern China, a sprawling subterranean laboratory aims to be the world’s first to crack a deep scientific enigma.

Inaction on the water crisis could put more than half of the world’s food production at risk by 2050, experts warned in a major report published Thursday.

Hundreds of papers have been written about the first known brown dwarf, Gliese 229B, since its discovery by Caltech researchers at the Institute’s Palomar Observatory in 1995. But a pressing mystery has persisted about this orb: It is too dim for its mass.

Sirish Subash is named “America’s Top Young Scientist” for his device PestiSCAND that can help detect harmful pesticide residue.

If it were up to Larry Ellison, the exorbitantly rich cofounder of software outfit Oracle, all of us will soon be smiling for the camera — constantly. Not for a cheery photograph, but to appease our super-invasive, if not totally omnipresent, algorithmic overseers.

As Business Insider reports, the tech centibillionaire glibly predicts that the wonders of AI will bring about a new paradigm of supercharged surveillance, guaranteeing that the proles — excuse us, “citizens” — all behave and stay in line.

“We’re going to have supervision,” Ellison said this week at an Oracle financial analysts meeting, per BI. “Every police officer is going to be supervised at all times, and if there’s a problem, AI will report that problem and report it to the appropriate person.”

Discover the revolutionary world of 4D printing technology and its potential to transform industries with self-adaptive, intelligent materials.

Since pioneering the first corporate purchase agreements for renewable electricity over a decade ago, Google has played a pivotal role in accelerating clean energy solutions, including the next generation of advanced clean technologies.

Google’s first nuclear energy deal is a step toward helping the world decarbonize through investments in advanced clean energy technologies.

A neurological study from the Netherlands reveals that viewing art in person triggers emotions 10 times stronger than seeing the same works in reproduction.

Five artworks induced stronger positive responses in 20 participants in the Netherlands than museum shop posters of the same works.