English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Recent advances in structural control during the synthesis of SWCNTs have incommon the use of bimetallic nanoparticles as catalysts, despite the fact thattheir exact role is not fully understood. We therefore analyze the effect ofthe catalyst' s chemical composition on the structure of the resulting SWCNTsby comparing three bimetallic catalysts (FeRu, CoRu and NiRu). A specificsynthesis protocol is designed to impede the catalyst nanoparticle coalescencemechanisms and stabilize their diameter distributions throughout the growth.Owing to the ruthenium component which has a limited carbon solubility, tubesgrow in tangential mode and their diameter is close to that of their seedingnanoparticle. By using as-synthesized SWCNTs as a channel material in fieldeffect transistors, we show how the chemical composition of the catalysts andtemperature can be used as parameters to tune the diameter distribution andsemiconducting-to-metallic ratio of SWCNT samples. Finally, a phenomenologicalmodel, based on the dependence of the carbon solubility as a function ofcatalyst nanoparticle size and nature of the alloying elements, is proposed tointerpret the results.

Tuning bimetallic catalysts for a selective growth of SWCNTs