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Manipulable multipurpose nanothermometers based on a fluorescent hybrid glass fiber microsphere cavity

Advanced Photonics Nexus 2024年第4期3卷 47-57页

作者： Dandan Yang Jianhao Chen Jiachang Wu Hao Zhang Xiaofeng Liu Jianrong Qiu Zhongmin Yang Guoping Dong South China University of Technology School of Materials Science and EngineeringState Key Laboratory of Luminescent Materials and DevicesGuangzhouChina Zhejiang University School of Materials Science and EngineeringHangzhouChina Zhejiang University College of Optical Science and EngineeringState Key Laboratory of Modern Optical InstrumentationHangzhouChina South China University of Technology School of Physics and OptoelectronicsGuangzhouChina

Fluorescent nanothermometers for remote temperature measurement at the micro/nanoscale have stimulated growing efforts in developing efficient temperature-responsive materials and detection ***,the efficient collection and transmission of optical signals have been a tremendous challenge for practical applications of these ***,we design an all-fiberized thermometry based on a fiber-coupled microsphere cavity coated with thermo-sensitive NaYF_(4)∶20%Yb^(3+);2%Er^(3+)@NaYF_(4)nanocrystals(NCs),allowing for spatial temperature sensing with resolution down to the few-micrometer *** our design,the microsphere efficiently excites the NCs and collects their upconversion emissions,and the use of a fiber splitter coupled with the microsphere allows for lossless routing of excitation and emitted *** demonstrate the use of this all-fiber temperature sensor in diverse environments,especially in strongly acidic and alkaline *** the high flexibility of commercial silica fiber,this all-fiber temperature ensor was employed for stable fixed-point real-time temperature measurement and multipurpose temperature recording/mapping in opaque environments,microscale areas,various solutions,and complicated bent ***,the demonstrated design could have strong implications for the practical use of nanothermometers in various possible scenarios,especially monitoring temperatures in diverse physiological settings.

关键词： nanothermometers fluorescence thermometry multipurpose temperature detection temperature imaging fiber microsphere cavity

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