Work

Nanoliter-scale, regenerable ion sensor: sensing with surface functionalized microstructured optical fiber

Year: 2013

Type: conference-paper

Abstract: The first nanoliter-scale regenerable ion sensor based on microstructured optical fiber (MOF) is reported. The air holes of the MOF are functionalized with a monoazacrown bearing spiropyran to give a switchable sensor that detects lithium ions down to 100 nM in nanoliter-scale volumes. Ion binding is turned on and off on upon irradiation with light, with the sensor being unaffected by multiple rounds of photoswitching. Unbound ions are flushed from the fiber in the ‘off’ state to allow the sensor to be reused. The integration of an ionophore into the sensor paves the way for the development of highly specific light-based sensing platforms that are readily adaptable to sense a particular ion simply by altering the ionophore design.

Source: Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE

DOI: 10.1117/12.2016510

Authors: Sabrina Heng, Mai-Chi Nguyen, Roman Kostecki, Tanya M. Monro, Andrew D. Abell

Institution: The University of Adelaide

Language: English

Topic: Advanced Fiber Optic Sensors

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: bronze

OpenAlex ID: W2066896757

FWCI: 0.402

Cites: 37

Cited by: 3

Related to: 10