pH sensing using growth of InN nanorods on glass substrates

S. P. Chang, S. Wang

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


In this work, the sensing cell of pH sensors with an vertically aligned InN nanorods array with a uniform diameter and length was fabricated on a glass substrate by plasma-assisted molecular beam epitaxy. The nanorod diameters were measured to be between 60 and 150 nm and have a length of around 500 nm.The InN nanorods with high crystalline quality grow preferentially in the (0002) direction over a large area. The resulting pH sensors with InN nanorods exhibited significantly improved sensing performances owing to the large sensing surface-tovolume ratio. The pH sensitivity calculated from the linear relation between the cyclic voltammetry current and the pH value was 5.4 nA/pH.

Original languageEnglish
Pages (from-to)929-934
Number of pages6
JournalDigest Journal of Nanomaterials and Biostructures
Issue number3
Publication statusPublished - 2014 Jan 1

All Science Journal Classification (ASJC) codes

  • Structural Biology
  • Atomic and Molecular Physics, and Optics
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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