Bioinspired CS@PAN Electrospun Fibrous Aerogels with Vertical Capsule Vessels for Self-Feedback Temperature Sensing
Source abstract
Abstract
Unconventional sensors with characteristics of portability, safety, remote manipulation, and high spatiotemproal resolution are highly desirable to detect varied temperature under specific conditions such as local temperature fields of the microenvironment. Herein, a 3D high-performance optical thermometry platform driven by the up-conversion green fluorescence of Er3+/Yb3+ co-doped electrospun fibrous aerogels is developed. The system simply consists of polycrystalline-encapsulated (Y1–x–yErxYby)2O2S/polyacrylonitrile (YOS-EY/PAN) electrospun fibers and chitosan (CS). The flexible fibers form a hierarchically ordered bionic cellular structure through bio-based cross-linking, which avoids toxic chemical cross-linking. Additionally, the intense green emission is ascribed to 2H11/2/4S3/2 → 4I15/2 transitions, as the main indicator to determine the relative sensitivity of 1.22% K–1 at 303 K. More importantly, multipoint dispersed lanthanide (Ln) between cell walls confers stronger temperature sensing capability to aerogels. The successful strategy provides insights for the development of luminescence thermometry and opens a window for multidimensional temperature sensing.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Gas Sensing Nanomaterials and Sensors · Advanced Sensor and Energy Harvesting Materials · Polydiacetylene-based materials and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, P.R. China
Department of Electrical Engineering and State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Hong Kong Special Administrative Region 999077, P.R. China
College of Microelectronics and Key Laboratory of Optoelectronics Technology, Faculty of Information Technology, Beijing University of Technology, Beijing 100124, P.R. China
Funding
Research Grants Council, University Grants Committee · Department of Education of Liaoning Province
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