Optical and Electronic NOx Sensors for Applications in Mechatronics

Sensors

Cinzia Di Franco³  Angela Elia³  Vincenzo Spagnolo³  Gaetano Scamarcio³  Pietro Mario Lugarà³  Eliana Ieva⁴  Nicola Cioffi⁴  Luisa Torsi⁴  Giovanni Bruno¹  Maria Losurdo¹  Michael A. Garcia²  Scott D. Wolter²  April Brown² 

[1] Institute of Inorganic Methodologies and of Plasmas, IMIP-CNR, via Orabona 4, 70126, Bari, Italy; E-Mails:;Duke University, Department of Electrical and Computer Engineering, Durham, NC 27708, USA; E-Mails:;CNR-INFM Regional Laboratory LIT3, via Amendola 173, 70126 Bari, Italy; E-Mails:;Chemistry Department, University of Bari, via Orabona 4, 70126, Bari, Italy; E-Mails:

关键词: Mechatronics;    NO_x;    optical sensor;    semiconductor based sensor;    nanoparticle;   

DOI  :  10.3390/s90503337

来源: mdpi

【 摘 要 】

Current production and emerging NO_x sensors based on optical and nanomaterials technologies are reviewed. In view of their potential applications in mechatronics, we compared the performance of: i) Quantum cascade lasers (QCL) based photoacoustic (PA) systems; ii) gold nanoparticles as catalytically active materials in field-effect transistor (FET) sensors, and iii) functionalized III-V semiconductor based devices. QCL-based PA sensors for NO_x show a detection limit in the sub part-per-million range and are characterized by high selectivity and compact set-up. Electrochemically synthesized gold-nanoparticle FET sensors are able to monitor NO_x in a concentration range from 50 to 200 parts per million and are suitable for miniaturization. Porphyrin-functionalized III-V semiconductor materials can be used for the fabrication of a reliable NO_x sensor platform characterized by high conductivity, corrosion resistance, and strong surface state coupling.

【 授权许可】

CC BY   
© 2009 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.