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Toward Single Atom Chains with Exfoliated Tellurium.

Hugh O H Churchill1,2, Gregory J Salamo3,4, Shui-Qing Yu4,5

  • 1Department of Physics, University of Arkansas, Fayetteville, AR, 72701, USA. churchill@uark.edu.

Nanoscale Research Letters
|August 12, 2017
PubMed
Summary

Tellurium

Keywords:
1D layered materialAtom chainExfoliationTellurium

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Solid State Physics

Background:

  • Tellurium (Te) possesses a unique atom chain structure.
  • Exploring nanoscale forms of tellurium is crucial for advanced electronic applications.

Purpose of the Study:

  • To demonstrate the exfoliation of tellurium into ultra-thin flakes and nanowires.
  • To characterize the properties of exfoliated tellurium at the nanoscale.

Main Methods:

  • Exfoliation technique to obtain nanoscale tellurium.
  • Atomic Force Microscopy (AFM) for thickness and width measurements.
  • Raman Spectroscopy (including polarized) for structural and orientation analysis.

Main Results:

  • Successfully exfoliated tellurium down to 1-2 nm thickness and below 100 nm width.
  • Raman spectra of exfoliated tellurium show slight shifts in A1 and E modes compared to bulk.
  • Crystal orientation of exfoliated tellurium flakes determined using polarized Raman spectroscopy.

Conclusions:

  • Exfoliation is a viable method for producing nanoscale trigonal tellurium.
  • This technique holds potential for fabricating single-atom chains of tellurium.