Fiber-Optic Chemical Sensors and Biosensors (2008-2012)

摘要

Fiber-optics enable direct optical spectroscopy (from the infared to the ultraviolet; in absorption, emission and plasmonic resonance) to be performed at inaccessible sites, over large distances, in strong magnetic fields, and in harsh environment. If equipped with chemically responsive coatings, they also enable species to be sensed that are not directly amenable to optical spectroscopy. This review covers respective work published in the time period from January 2008 to September 2012 and is written in continuation of previous reviews. Data were electronically searched in SciFinder and MedLine. In addition, the authors collected references from (sensor) journals over the past five years. Given the number of articles published on fiber-optic chemical sensors and biosensors (FOCS), a stringent selection had to be made. Priority has been given to FOCS of defined chemical, environmental, or biochemical significance, to new schemes and new materials. This review does not include (a) FOCS that obviously have been rediscovered; (b) FOCS for monitoring purely technical processes such as injection molding, extrusion, or oil drilling, even though these represent important applications of optical fiber technology; and (c) sensors for temperature and other physical parameters. Regrettably, the assignment of some articles to specific sections sometimes is somewhat arbitrary, because some articles excel in terms of both new materials, advanced spectroscopic schemes, or analytical performance and selectivity.