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Highly Sensitive Dual-Emission Fluorescent Temperature Probe Design Based on Non-contact Measurement

  • Xi'an Jiaotong University
  • School of Chemistry
  • PSL Research University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Non-contact optical temperature sensing offers significant advantages in dynamic temperature monitoring of mechanical components. Here, we innovatively propose a dual-emission non-contact temperature sensing probe based on the synergistic action of dual quantum dots, which is characterized by dual-emission optics by co-doping two quantum dots in SiO2 mesoporous microspheres. Successful preparation of the sensing probe coating based on polymer encapsulation was achieved, and the blue emission of BN quantum dots and the red emission based on CdTe/ZnS quantum dots were characterized under excitation. Successful doping of quantum dots in SiO2 microspheres was demonstrated based on TEM analysis and spectral analysis. The temperature sensing performance of the sensing coating was tested by a temperature-dependent platform, and the results showed that the probe achieved high sensitivity and a wide range of temperature monitoring by establishing a quantitative relationship between the fluorescence intensity ratio (FIR) and temperature of the two types of quantum dots. This work presents an effective strategy for designing ultrasensitive ratiometric optical thermometers by rationally integrating dual quantum dots.

Original languageEnglish
Title of host publicationAdvances in Mechanical Design - Proceedings of the 2025 International Conference on Mechanical Design ICMD 2025
EditorsJianrong Tan, Zhenyu Liu, Weifei Hu
PublisherSpringer Science and Business Media B.V.
Pages977-984
Number of pages8
ISBN (Print)9789819573417
DOIs
StatePublished - 2026
EventInternational Conference on Mechanical Design, ICMD 2025 - Hangzhou, China
Duration: 9 May 202511 May 2025

Publication series

NameMechanisms and Machine Science
Volume204
ISSN (Print)2211-0984
ISSN (Electronic)2211-0992

Conference

ConferenceInternational Conference on Mechanical Design, ICMD 2025
Country/TerritoryChina
CityHangzhou
Period9/05/2511/05/25

Keywords

  • Dual-emission.
  • Quantum dot
  • Temperature sensing

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