Microcapsule Based Sensing Technology

A special issue of Gels (ISSN 2310-2861). This special issue belongs to the section "Gel Processing and Engineering".

Deadline for manuscript submissions: closed (31 July 2023) | Viewed by 2058

Special Issue Editors


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Guest Editor
Director and Taishan Distinguished Professor, Institute of Advanced Engineering Materials and Structures, Taishan University, Taian 271000, China
Interests: superhydrophobic coating; micro-nano structures; microcapsule; structural health monitoring
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Guest Editor
Karlsruhe Institute of Technology, Macromolecular Architectures, Karlsruhe, Germany
Interests: synthesis of complex macromolecular architectures and functional polymers; development of new polymer-forming reactions and novel conjugation chemistries; chemical modification of polymers; polycondensation; metathesis polymerization; novel (bio)degradable polymers; self-immolative polymers; novel sulfur-based polymers; (dynamic) stimuli-sensitive materials; (self-reporting) single-chain nanoparticles; redox polymers; polymers for energy (batteries); polymers from renewable resources; functional polymeric networks
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Special Issue Information

Dear Colleagues,

Damage sensing materials can respond to structural damage by relying on their own characteristics to achieve early detection of minor damage. Microcapsule-based sensing technology including gel materials has been proposed and applied to damage monitoring of structures. Due to its flexible application and intuitive damage expression effect, it has received extensive attention in recent years. It provides the possibility to inspect subtle structural damage through visual signals.

The aim of this Special Issue is to understand the mechanisms of microcapsule-based sensing technology and to collect the latest research and achievements. In addition, we invite contributions concerning applications of microcapsule-based sensing technology. We hope that researchers working on these topics will provide valuable contributions to this Special Issue of Gels

Please note, the manuscripts submitted to this special issue should focus on the gel, gelling or gelation fields. More details can be found at https://www.mdpi.com/journal/gels/about.

Prof. Dr. Qing Wang
Dr. Hatice Mutlu
Guest Editors

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Keywords

  • micro- and nanostructures
  • microcapsules
  • polymerization
  • damage sensing
  • sensing technology

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Published Papers (1 paper)

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Research

12 pages, 19687 KiB  
Article
Study of Concrete Surface Coatings Using Thermosensitive Fluorescent Microcapsules Capable of Indicating Damage
by Haohui Zhang, Qing Wang, Yao Li and Yayun Zhao
Gels 2022, 8(9), 583; https://doi.org/10.3390/gels8090583 - 14 Sep 2022
Cited by 1 | Viewed by 1634
Abstract
A new type of concrete surface gel coating using thermosensitive fluorescent (TSF) microcapsules was proposed to monitor micro-cracks of cement-based materials. The gel materials can adhere other materials, and the incorporation of microcapsules into the gel coating can be cured on various structural [...] Read more.
A new type of concrete surface gel coating using thermosensitive fluorescent (TSF) microcapsules was proposed to monitor micro-cracks of cement-based materials. The gel materials can adhere other materials, and the incorporation of microcapsules into the gel coating can be cured on various structural surfaces. Zinc sulfide and phenyl acetate were encapsulated into a polymethyl methacrylate shell to prepare the TSF microcapsules by a solvent evaporation method. When micro-cracks are generated on the surface of the gel coating, the ruptured TSF microcapsules burst out, fill the damaged area, and then emit fluorescence after being excited at ambient temperature. It was found that the brightness of the fluorescence increased with increasing temperature from 80–110 °C. When the concentration of TSF microcapsules was 15% of the mass of the gel coating, the cement-based damage-sensing material had sufficient damage-indicating effects, and the fluorescence brightness of the crack location remained even after a long time. It is expected that this study will provide an effective and intuitive method for crack location detection of cement-based materials. Full article
(This article belongs to the Special Issue Microcapsule Based Sensing Technology)
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