Twistronics: building moiré superlattices from 2D materials

Рет қаралды 8,896

Quantum Light University of Sheffield

Жыл бұрын

Follow up to our previous video on van der Waals heterostructures, 2D Materials Beyond Graphene.
When ultrathin two-dimensional materials are stacked together to build designer nanomaterials, they can be twisted relative to one another, such that the atoms in each layer line up differently. This twisting, which is not possible in most present-day thin film nanotechnology, can lead to enormous changes of the material properties. The great potential on offer has given rise to a new field of scientific research termed "twistronics", which seeks to discover new functionality by taking two-dimensional materials and adding a twist.
Written and directed by Tom Lyons in collaboration with Alexander Tartakovskii's research group.
Produced by Gareth Jones, 23i.co.uk

Пікірлер: 20

@zarelinoise3866 Ай бұрын

This is absolutely mindblowing, light and quantum light phenomenom are my favorite subject now

@adminema6116 Жыл бұрын

this is unreal. dang.

@DarkUsta Жыл бұрын

Fantastic!

@omarionfanus1065 4 ай бұрын

Humanity as we speak is truly incredible. And alien technology far more sophisticated, crazy!

@elimeril2377 11 ай бұрын

Awesome! and Fantastic!

@bozhang8152 Жыл бұрын

Awesome!

@user-re8lz9xc6x 10 ай бұрын

Interesting!

@hili467 8 күн бұрын

So it sounds like the moiré pattern creates areas of high resistance and low resistance, and replaces the josephson junction is regular superconductors?

@TheNeurall Жыл бұрын

splendid

@aaronjennings8385 8 ай бұрын

So interesting.

@aaronjennings8385 Жыл бұрын

Wow.

@Zextranet Жыл бұрын

Yeah, but how do you modify the angle of one layer in the Bilayer Graphene? Nanomachines? (Actually, that is a good idea)

@alexanderitartakovskii7202 Жыл бұрын

you simply assemble the structure layer by layer with one layer slightly rotated

@theshuman100 10 ай бұрын

@@alexanderitartakovskii7202 very informative tahnks

@pseudolullus 6 ай бұрын

We use the rich toolkit of the semiconductor industry. For instance, we don't need to mechanically twist anything, we can grow the single layer crystals in place through CVD (chemical vapor deposition). This process grows a structure from a series of strategically placed "nucleation" sites by having atoms fall into place from a gas phase. We can then first grow the bottom layer and then change the gas flow conditions, shifting the place where the second lattice will nucleate. This will grow a second rotated layer.

@youtubehandlesareridiculous 5 ай бұрын

@@pseudolullus Is there a technique to dynamically tune the twist angle?

@jumpieva 5 ай бұрын

@@alexanderitartakovskii7202 yes but this means absolute fidelity and consistency in fabrication so you can alter these at creation by these small scales and ensure it all fits properly. this stuff requires precision at least for now.

@aaronjennings8385 Жыл бұрын

Ok. Wow.