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Self-Charging Persistent Mechanoluminescence with Mechanics Storage and Visualization Activities
Yongqing Bai1,2,3, Xiuping Guo1, Birong Tian1
1State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China.
Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|August 17, 2022
Summary
This study introduces self-charging persistent mechanoluminescence materials that emit light under mechanical stress without pre-irradiation. These novel materials offer direct, long-lasting light emission for various applications.
Area of Science:
- Materials Science
- Luminescence
- Nanotechnology
Background:
- Persistent mechanoluminescence (ML) is crucial for applications but limited by transient emission and required pre-irradiation.
- Existing persistent ML materials rely on trap-controlled mechanisms, hindering practical use.
Purpose of the Study:
- To develop a novel self-charging persistent mechanoluminescence material.
- To overcome the limitations of pre-irradiation requirements in current ML technologies.
Main Methods:
- Compositing Sr3Al2O5Cl2:Dy3+ (SAOCD) powders into a flexible polydimethylsiloxane (PDMS) matrix.
- Investigating matrix effects, thermoluminescence, cathodoluminescence, and triboelectricity properties.
- Analyzing interfacial triboelectrification-induced electron bombardment for self-charging mechanisms.
Main Results:
- The SAOCD/PDMS elastomer exhibits intense and persistent ML under mechanical stimuli without pre-irradiation.
- Interfacial triboelectrification-induced electron bombardment is identified as the self-charging mechanism.
- The material demonstrates mechanics storage and visualized reading capabilities.
Conclusions:
- A novel self-charging persistent mechanoluminescence material (SAOCD/PDMS) has been successfully fabricated.
- The material's unique self-charging process enables direct and persistent light emission under mechanical stress.
- This breakthrough offers new approaches for mechanical engineering, bioengineering, and artificial intelligence applications.
