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pH sensor based on boron nitride nanotubes

  • Q. Huang
  • , Y. Bando
  • , L. Zhao
  • , C. Y. Zhi
  • , D. Golberg

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

A submicrometer-sized pH sensor based on biotin-fluorescein-functionalized multiwalled BN nanotubes with anchored Ag nanoparticles is designed. Intrinsic pH-dependent photoluminescence and Raman signals in attached fluorescein molecules enhanced by Ag nanoparticles allow this novel nanohybrid to perform as a practical pH sensor. It is able to work in a submicrometer-sized space. For example, the sensor may determine the environmental pH of sub-units in living cells where a traditional optical fiber sensor fails because of spatial limitations. © 2009 IOP Publishing Ltd.
Original languageEnglish
Article number415501
JournalNanotechnology
Volume20
Issue number41
DOIs
Publication statusPublished - 2009
Externally publishedYes

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