Sensing up to 40 atm Using Pressure-Sensitive Aero-GaN

Mircea Dragoman, Vladimir Ciobanu, Sindu Shree, Daniela Dragoman, Tudor Braniste, Simion Raevschi, Adrian Dinescu, Andrei Sarua, Yogendra K. Mishra, Nicola Pugno, Rainer Adelung, Ion Tiginyanu*

*Corresponding author for this work

Research output: Contribution to journalLetter (Academic Journal)peer-review

7 Citations (Scopus)
148 Downloads (Pure)

Abstract

This work reports on the fabrication and characterization of a robust pressure sensor based on aero-GaN. The ultraporous aeromaterial consists of GaN interconnected hollow micro-tetrapods with the wall thickness of about 70 nm. The inner surface of hollow micro-tetrapods contains an ultrathin film of ZnO genetically related to the sacrificial template used for epitaxial deposition of GaN. The pressure sensing measurements disclose a nearly linear dependence of the electrical conductance versus applied pressure up to 40 atm, a stable state signal being attained after an interval of about 10 s.

Original languageEnglish
Article number1900012
Number of pages5
JournalPhysica Status Solidi - Rapid Research Letters
Volume13
Issue number6
Early online date12 Mar 2019
DOIs
Publication statusPublished - 1 Jun 2019

Keywords

  • aeromaterials
  • aerospace applications
  • gallium nitride
  • microtubular structures
  • ultra-lightweight pressure sensors

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