Pristine carbon nanotubes based resistive temperature sensor

Journal Article · Wed Apr 13 00:00:00 EDT 2016 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4945132· OSTI ID:22591057

Islamia, Jamia Millia ^[1]

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1. New Delhi, India; India

A good sensor must be highly sensitive, faster in response, of low cost cum easily producible, and highly reliable. Incorporation of nano-dimensional particles/ wires makes conventional sensors more effective in terms of fulfilling the above requirements. For example, Carbon Nanotubes (CNTs) are promising sensing element because of its large aspect ratio, unique electronic and thermal properties. In addition to their use for widely reported chemical sensing, it has also been explored for temperature sensing. This paper presents the fabrication of CNTs based temperature sensor, prepared on silicon substrate using low cost spray coating method, which is reliable and reproducible method to prepare uniform CNTs thin films on any substrate. Besides this, simple and inexpensive method of preparation of dispersion of single walled CNTs (SWNTs) in 1,2 dichlorobenzene by using probe type ultrasonicator for debundling the CNTs for improving sensor response were used. The electrical contacts over the dispersed SWNTs were taken using silver paste electrodes. Fabricated sensors clearly show immediate change in resistance as a response to change in temperature of SWNTs. The measured sensitivity (change in resistance with temperature) of the sensor was found ∼ 0.29%/°C in the 25°C to 60°C temperature range.

• OSTI ID: 22591057
• Journal Information: AIP Conference Proceedings, Vol. 1724, Issue 1; Conference: ETMN-2015: 2. international conference on emerging technologies: Micro to nano 2015, Rajasthan (India), 24-25 Oct 2015; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BENZENE
CARBON NANOTUBES
ELECTRIC CONDUCTIVITY
ELECTRIC CONTACTS
FABRICATION
NANOPARTICLES
ORGANIC CHLORINE COMPOUNDS
PROBES
SENSITIVITY
SENSORS
SILICON
SILVER
SPRAY COATING
SUBSTRATES
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
THIN FILMS