Two-dimensional materials that can multitask


Naturally produced patterned monolayers have been discovered by scientists at Vanderbilt University and the Chinese Academy of Sciences in Beijing which can act as a base for creating a variety of novel materials with dual optical, magnetic, catalytic or sensing capabilities.

“Patterned materials open up the possibility of having two functionalities in a single material,” said Professor Sokrates Pantelides from Vanderbilt University. “Of course, you can do such a thing by using two materials side by side, but patterned materials offer a whole range of new options for device designers.”

Chalcogenides – 2D materials that contain sulphur, selenium or tellurium – are known for their widely varied optical, electrical and thermal properties and naturally form monolayers that can serve as blank slates that can be readily tailored for specific applications.

The researchers have shown that monolayers formed by two chalcogenides – platinum-selenium and copper-selenium – naturally combine with nanoscale precision into alternating triangles with different phases: metallic and semiconductor.

Because each phase has different electrical and chemical properties, the researchers claim two different types of molecules can bond to its surface, allowing it to perform two functions simultaneously.

“In general, 2D materials are ‘functionalised’ for specific applications by adsorbing different species of atoms or molecules on them or by embedding impurities in their otherwise perfect crystalline structure,” Pantelides explained.

“Our new paper demonstrates a way to fabricate 2D materials that allows the two phases of the material to be functionalised independently.”


Let’s block ads! (Why?)

New Electronics News

Get real time updates directly on you device, subscribe now.

Subscribe to our newsletter
Sign up here to get the latest news, updates and special offers delivered directly to your inbox.
You can unsubscribe at any time
You might also like

Leave A Reply

This website uses cookies to improve your experience. We'll assume you're ok with this, but you can opt-out if you wish. Accept Read More