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<p>Nanoscopic allotropes of tellurium, such as tellurene and tellurium nanowires, have attracted a lot of attention due to tellurium’s optical, electronic, and thermoelectric properties. This study introduces a new synthesis of nanofibered tellurium ropes. The fibers are only a few nanometers thick and they bundle up into ropes of lengths up to 10 <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="13538_2025_1776_Article_IEq1.gif" Format="GIF" Height="12" Rendition="HTML" Resolution="72" Type="Linedraw" Width="15" /> </InlineMediaObject> <EquationSource Format="TEX">\( \mu \)</EquationSource> <EquationSource Format="MATHML"><math> <mi>μ</mi> </math></EquationSource> </InlineEquation>m and thicknesses between 25 and 300 nm. The ratio of the rope diameter to length is never found to be below 0.02, which suggests that this is a natural stability limit. Our study reveals that the nanoropes are formed during a thermal treatment on a naturally oxidized Si (111) surface. When the same synthesis procedure is executed on GaAs (100) and Au on GaAs (100), we do not observe any formation of nanofibered ropes. Therefore, we conclude that the substrate plays a non-negligible role for the synthesis.</p>

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Novel Synthesis of Tellurium Nanofibered Ropes on Silicon Substrate

  • 期刊论文

  • 发表日期：

    2025年6月2日

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  • Matheus O. Muller,
  • Pedro V. Lopes,
  • Manuela V. Trentini,
  • Rodrigo Dias dos Santos,
  • Fernanda Marques,
  • Braulio Soares Archanjo,
  • Alan Dias,
  • Elisa Baggio-Saitovitch,
  • Carsten Enderlein,
  • Jaime F. Oliveira

摘要

Nanoscopic allotropes of tellurium, such as tellurene and tellurium nanowires, have attracted a lot of attention due to tellurium’s optical, electronic, and thermoelectric properties. This study introduces a new synthesis of nanofibered tellurium ropes. The fibers are only a few nanometers thick and they bundle up into ropes of lengths up to 10 \( \mu \) μ m and thicknesses between 25 and 300 nm. The ratio of the rope diameter to length is never found to be below 0.02, which suggests that this is a natural stability limit. Our study reveals that the nanoropes are formed during a thermal treatment on a naturally oxidized Si (111) surface. When the same synthesis procedure is executed on GaAs (100) and Au on GaAs (100), we do not observe any formation of nanofibered ropes. Therefore, we conclude that the substrate plays a non-negligible role for the synthesis.