Nanotechnology

Nanomolding may velocity discovery of recent topological supplies

Nanomolding may velocity discovery of recent topological supplies
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Nanomolding could speed discovery of new topological materials
Nanomolded tin telluride nanowires in an anodic aluminum oxide mildew. Credit score: N. Liu, Y. Xie, G. Liu, S. Sohn, A. Raj, G. Han, B. Wu, J. J. Cha, Z. Liu, and J. Schroers, Phys. Rev. Lett. 124, 036102 (2020); M. T. Kiani, J. J. Cha, APL Supplies 10, 080904 (2022).

Nanomolding of topological nanowires may velocity the invention of recent supplies for functions resembling quantum computing, microelectronics and clean-energy catalysts, in line with an article co-authored by Judy Cha, professor of supplies science and engineering at Cornell.

Topological supplies are valued for his or her distinctive means to own completely different properties at their surfaces and edges, and these floor properties might be enhanced by engineering the supplies on the nanoscale. The problem for scientists is that conventional strategies of fabricating nanowires are gradual and do not supply a excessive stage of precision.

“Theorists have predicted a few quarter of all recognized inorganic crystals could also be topological,” Cha mentioned. “We’re speaking tens of 1000’s of compounds, so the traditional technique of creating these crystals is simply incompatible when it comes to screening them to search for check topological supplies for particular functions.”

However nanomolding, by which a bulk polycrystalline feedstock is pressed right into a nanostructured mildew at an elevated temperature to type nanowires, may present an answer. Writing in APL Supplies, Cha and postdoctoral affiliate Mehrdad Kiani clarify nanomolding affords a number of benefits over current synthesis strategies for nanoscale supplies.

“Not like conventional top-down and bottom-up fabrication strategies, nanomolding requires minimal optimization of experimental parameters and may work on all kinds of topological compounds, thus enabling excessive throughput fabrication of topological nanowires. The fabricated nanowires are single crystalline and defect-free and may have excessive side ratios larger than 1,000,” write Cha and Kiani.

Nanomolding had beforehand been used for metallic materials methods, however Cha and her analysis group are one of many first to develop its software to . And whereas, in precept, nanomolding delivers all of the traits wished in a topological nanowire, precisely how and why the tactic is so profitable continues to be not totally understood—a information hole that the Cha Group is working to fill.

Present analysis tasks within the Cha Group embody measuring {the electrical} properties of nanomolded topological nanowires to benchmark in opposition to nanowires produced with different methods, and finding out atomic diffusion and mechanical motions of atoms through the molding course of. Cha can also be welcoming collaborators desirous about nanowire variations of compounds that they’re researching.

The analysis was additionally featured in AIP Scilight.


Nanofabrication utilizing thermomechanical nanomolding


Extra info:
Mehrdad T. Kiani et al, Nanomolding of topological nanowires, APL Supplies (2022). DOI: 10.1063/5.0096400

Ashley Piccone, Nanomolding nanowires for prime throughput screening of topological supplies, AIP Scilight (2022). DOI: 10.1063/10.0013404

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Nanomolding may velocity discovery of recent topological supplies (2022, September 12)
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