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Gold nanotip array for ultrasensitive electrochemical sensing and spectroscopic monitoring

  • Yueyue Jiang
  • , Fanben Meng
  • , Dianpeng Qi
  • , Pingqiang Cai
  • , Zongyou Yin
  • , Fangwei Shao
  • , Hua Zhang
  • , Freddy Boey
  • , Xiaodong Chen

Research output: Contribution to journalArticlepeer-review

Abstract

A gold nanotip array platform with a combination of ultrasensitive electrochemical sensing and spectroscopic monitoring capability is reported. Adenosine triphosphate is detected down to 1 pM according to the impedance changes in response to aptamer-specific binding. Furthermore, the local molecular information can be monitored at the individual plasmonic nanotips, and hence provide the capability for a better understanding of complex biological processes.

Original languageEnglish (US)
Pages (from-to)2260-2265
Number of pages6
JournalSmall
Volume9
Issue number13
DOIs
StatePublished - Jul 8 2013

Keywords

  • adenosine triphosphate
  • nanotip arrays
  • raman scattering
  • redox electrochemistry

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