Optical investigations of electrochemical processes using a long-period fiber grating functionalized by indium tin oxide
Marta Janczuk-Richter , Monika Piestrzyńska , Dariusz Burnat , Petr Sezemsky , Vitezslav Stranak , Wojtek J. Bock , Robert Bogdanowicz , Joanna Niedziółka-Jönsson , Mateusz Jakub Śmietana
AbstractThe growing needs for fast and reliable sensing devices stimulate development of new technological solutions. In this work a new multi-domain sensing method is demonstrated where optical sensing device has been applied to enhance amount of data received during electrochemical analysis. Thin, optically transparent, high-refractive-index, and electrically conductive indium tin oxide (ITO) film was deposited using magnetron sputtering on the surface of the long-period gratings (LPG) induced in optical fiber. ITO serves as working electrode in electrochemical setup and as a coating that enhances sensitivity of a LPG to changes of external refractive index. All the measurements were conducted in a combined optical and electrochemical setup. Obtained results show capability of this approach for optical monitoring of both electrochemical processes and changes in optical properties at the ITO surface. The optical response of the sensor was strongly dependent on the voltage applied to the ITO-LPG working electrode and on composition of the electrolyte. Changes observed in optical spectra may be attributed to the alterations in optical properties of both ITO layer (refractive index changes) and electrolyte in the vicinity of electrode (double layer formation). The developed structures can be further used as a fiber-based sensors and biosensors with integrated opto-electrochemical readout.
|Journal series||Sensors and Actuators B - Chemical, ISSN 0925-4005, (A 40 pkt)|
|Publication size in sheets||0.5|
|Keywords in English||Optical fiber sensor; Long-period fiber gratings; Refractive index sensing; Thin film; Indium tin oxide; Electrochemistry|
|project||x. Project leader: Śmietana Mateusz Jakub,
, Phone: (22) 234 63 64, start date 20-05-2015, planned end date 19-05-2019, IMiO/2015/NCN/2, Implemented
DIAMSEC-ultra-sensitive sensory platform for rapid detection of epidemiological and pandemic threats. Project leader: Śmietana Mateusz Jakub, , Phone: (22) 234 63 64, application date 04-11-2016, start date 01-06-2017, planned end date 31-05-2020, MO/2016/7, Implemented
|Score|| = 40.0, ArticleFromJournal|
= 40.0, ArticleFromJournal
|Publication indicators||: 2016 = 1.463; : 2017 = 5.667 (2) - 2017=5.118 (5)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.