Temperature sensing using sulfur-doped carbon nanoparticles

Sadhanala, Hari Krishna and Senapati, Subrata and Nanda, Karuna Kar (2018) Temperature sensing using sulfur-doped carbon nanoparticles. In: CARBON, 133 . pp. 200-208.

PDF Car_133_200_2018.pdf - Published Version Restricted to Registered users only Download (3MB) | Request a copy

Abstract

Temperature sensing at micro/nano scale with materials by direct fluorescence excitation is widely used in the recent years. Here, we report the green hydrothermal synthesis of sulfur-doped carbon nano-particles (S-CNPs) from inexpensive precursors such as sucrose and sodium thiosulfate. The resultant SC-NPs exhibit luminescence both in aqueous and solid states. The variation of steadyestate photoluminescence intensity of S-CNPs with temperature is investigated and the sensitivity of S-CNPs solid film with 355 nm excitation is found to be 2.63 x 10(-2) K-1, which is slightly higher than that with 532 nm excitation (2.15 x 10(-2) K-1). The activation energy is found to be 141.87 and 30.7 meV for 355 and 532 nm excitation, respectively. Similarly, the sensitivity of S-CNPs in solution is found to be 7.3 x 10(-3) K-1 and the the range of temperature is wider than physiological range (288-333 K) which suggests that S-CNPs can be used in the biological cells temperature sensing as well. Overall, the results suggest that S-CNPs can be used as nano thermometers. (C) 2018 Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Publication:	CARBON
Publisher:	PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Additional Information:	Copy right for this article belong to PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	16 May 2018 15:58
Last Modified:	25 Aug 2022 03:25
URI:	https://eprints.iisc.ac.in/id/eprint/59848

Actions (login required)

View Item