The Best Features of Diamond Nanothread for Nanofiber Application

TL;DR

This paper demonstrates that ultrathin diamond nanothreads exhibit superior torsional deformation and interfacial load transfer properties compared to carbon nanotubes, making them promising for advanced nanofiber applications.

Contribution

It introduces the exceptional mechanical and interfacial properties of diamond nanothreads, highlighting their potential as next-generation carbon fibers.

Findings

Diamond nanothreads have a torsional elastic limit nearly four times higher than CNT bundles.

DNT bundles exhibit interface transfer loads more than twice those of CNT bundles.

Interfacial shear strength of DNT bundles is an order of magnitude higher than CNT bundles.

Abstract

Carbon fibers, especially those constructed from carbon nanotubes (CNTs), have attracted intensive interests from both scientific and engineering communities due to their outstanding physical properties. In this workHere we report, we find that the recently synthesized recently synthesized ultrathin diamond nanothread (DNT) not only possesses excellent torsional deformation capability, but also has excellent interfacial load transfer efficiency. Comparing with the (10,10) carbon nanotube bundles, (1) By considering a seven strand fiber, the flattening of nanotubes as observed in (10,10) CNT bundles is not observed in DNTdiamond nanothread bundle, which . This endows the DNT bundle withleads to a high torsional elastic limit that is almost three times higherfour times as obtained from the (10,10) CNT bundle. Pull-out tests reveal that (2) Pull-out tests reveal that tthe DNT diamond nanothread bundle has has an interface transfer load of more than twice that of the CNT carbon naontube bundle, corresponding to an order of magnitude higher in terms of . (3) Tthe interfacial shear strength of the DNT bundle is an order of magnitude higher than that of the CNT bundle. Such high interface load transfer efficiency is attributed to the zigzag morphology of DNT, which introduces a strong mechanical interlocking effect at the interface through the stick-slip motion (totally different from the load transfer mechanism in CNT bundle). The aforementioned three aspects are commonly used to gauge the performance of fibers. Obviously,These intriguing features enable DNT diamond nanothread as exhibits excellent potential candidate for constructing next generation carbon fibers.