Converting capsules to sensors for nondestructive analysis: from cargo-responsive self-sensing to functional characterization

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A general concept of converting capsules into sensors is reported. Such simple conversion enables instantaneous nondestructive analysis for applications such as controlled release and energy storage among others. Converted capsule sensors are responsive in emission colors to varying core cargos via the incorporation of a solvatochromic fluorophore under excitation. Such cargo-responsive self-sensing abilities facilitate their application in capsule-level analysis such as cargo retention-leakage detection and release implications, as well as defect identification. The versatile concept is shown as an auxiliary tool in thermal energy storage to visualize phase transition, exhibiting promising potentials in application-level characterization.


Original languageEnglish
Pages (from-to)8693-8698
Number of pages6
JournalACS Applied Materials & Interfaces
Issue number9
Early online date14 Jan 2019
Publication statusPublished - 6 Mar 2019


  • capsule, fluorescence, leakage, nondestructive, phase change materials, retention, sensor, thermal energy storage

ASJC Scopus subject areas