Photonic gas sensors exploiting directly the optical properties of hybrid carbon nanotube localized surface plasmon structures

Thomas Allsop; Raz Arif; Ron Neal; Kyriacos Kalli; Vojtěch Kundrát; Aleksey Rozhin; Phil Culverhouse

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Photonic gas sensors exploiting directly the optical properties of hybrid carbon nanotube localized surface plasmon structures

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We investigate the modification of the optical properties of carbon nanotubes (CNTs) resulting from a chemical reaction triggered by the presence of a specific compound (gaseous carbon dioxide (CO2)) and show this mechanism has important consequences for chemical sensing.CNTs have attracted significant research interest because they can be functionalized for a particular chemical,yielding a specific physical response which suggests many potential applications in the fields of nanotechnology and sensing.So far,however,utilizing their optical properties for this purpose has proven to be challenging.We demonstrate the use of localized surface plasmons generated on a nanostructured thin film,resembling a large array of nano-wires,to detect changes in the optical properties of the CNTs.Chemical selectivity is demonstrated using CO2 in gaseous form at room temperature.The demonstrated methodology results additionally in a new,electrically passive,optical sensing configuration that opens up the possibilities of using CNTs as sensors in hazardous/explosive environments.

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《光：科学与应用（英文版）》 |2016年第1期|141-148|共8页
作者
Thomas Allsop; Raz Arif; Ron Neal; Kyriacos Kalli; Vojtěch Kundrát; Aleksey Rozhin; Phil Culverhouse;
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Aston Institute of Photonic Technologies, School of Engineering and Applied Science, Aston University, Aston Triangle, Birmingham B47ET, UK;

Nanoscience Research Group,School of Engineering and Applied Science, Aston University, Aston Triangle, Birmingham B47ET, UK;

physics Department, Faculty of Science, University of Sulaimani,Sulaimani, Iraq-Kurdistan Region;

Faculty of Science and Technology, School of Maths, Computing and Robotics, University of Plymouth, Plymouth PL4 8AA, UK;

Department of Electrical Engineering, Computer Engineering and Informatics, Cyprus University of Technology, Limassol 3036, Cyprus;

Nanoscience Research Group,School of Engineering and Applied Science, Aston University, Aston Triangle, Birmingham B47ET, UK;

Nanoscience Research Group,School of Engineering and Applied Science, Aston University, Aston Triangle, Birmingham B47ET, UK;

Faculty of Science and Technology, School of Maths, Computing and Robotics, University of Plymouth, Plymouth PL4 8AA, UK;

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Photonic gas sensors exploiting directly the optical properties of hybrid carbon nanotube localized surface plasmon structures

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