Strained semimetallic and semiconducting SnNW

Lida Ansari, Giorgos Fagas, James C. Greer

Research output: Chapter in Book/Conference proceedingConference contributionpeer-review


As the diameter of semimetal nanowires decreases semimetal to semiconductor transition occurs as a consequence of quantum confinement. This enables the use of bandgap engineering to form a field-effect transistor near atomic dimensions and eliminates the need for doping in the transistor's source, channel, or drain for sub-5 nm transistors. The use of strain as a 'technology booster' in transistor design has been used in Si technology; in this study the electronic structure of tin nanowires (SnNW) under uniaxial strain is investigated using density functional theory (DFT). Also, the valence and conduction charge density modification under applying uniaxial strain is studied. It is demonstrated that the properties of a 4.2 nm [110]-oriented SnNW varies towards more metallic or semiconducting by the application of tensile or compressive strain, respectively. Strain energies and Young modulus which vary with nanowire diameter and crystal orientation are also analysed. It is demonstrated that strain can be applied in addition to geometry confinement to tune the bandgap and other electronic properties.

Original languageEnglish
Title of host publicationIEEE-NANO 2015 - 15th International Conference on Nanotechnology
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages3
ISBN (Electronic)9781467381550
Publication statusPublished - 2015
Externally publishedYes
Event15th IEEE International Conference on Nanotechnology, IEEE-NANO 2015 - Rome, Italy
Duration: 27 Jul 201530 Jul 2015

Publication series

NameIEEE-NANO 2015 - 15th International Conference on Nanotechnology


Conference15th IEEE International Conference on Nanotechnology, IEEE-NANO 2015


  • Bandgap Engineering
  • DFT
  • Field Effect Transistor (FET)
  • Nanowire
  • Semimetal
  • Strain
  • Tin

ASJC Scopus subject areas

  • Process Chemistry and Technology
  • Electrical and Electronic Engineering
  • Ceramics and Composites
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films


Dive into the research topics of 'Strained semimetallic and semiconducting SnNW'. Together they form a unique fingerprint.

Cite this