Characterization of a field-assist multi-pass fibre optic surface plasmon resonance sensor Academic Article

abstract

• A fibre optic multiple-pass surface plasmon resonance (SPR) sensor coupled with a field-assist capability for detecting extremely low concentrations of charged particles is demonstrated for the first time. The field-assist feature forces charged particles/molecules to the SPR surface, increasing the local concentration for detection and thus the sensitivity by an additional factor of about 100. A 10 pM concentration of 47 nm diameter polystyrene (PS) latex beads and 2 M concentration of salt dissolved in DI water were detected within a few seconds. The equivalent index resolution for atomic size corresponding to ionized chlorine in salt is 2.6 10-8. This technique should offer the potential for the sensitive and fast detection of analytes in a solution. 2007 IOP Publishing Ltd.

authors

• Kameoka, Jun

published proceedings

• MEASUREMENT SCIENCE AND TECHNOLOGY

author list (cited authors)

• Ko, H., Su, C. B., & Kameoka, J.

citation count

• 2

complete list of authors

• Ko, Hyungduk||Su, Chin B||Kameoka, Jun

publication date

• September 2007

publisher

• IOP Publishing  Publisher

published in

• Measurement Science and Technology  Journal

keywords

• Fibre Optic Spr Sensor
• Multi-pass Spr Sensor
• Surface Plasmon Resonance

Digital Object Identifier (DOI)

• 10.1088/0957-0233/18/9/025

start page

• 2938

end page

• 2942

volume

• 18

issue

• 9

URL

• http%3A%2F%2Fdx.doi.org%2F10.1088%2F0957-0233%2F18%2F9%2F025