Mechanoluminescence of ZnS:Mn phosphors and its correlation to impact energy and contact geometry

Leelachao, Sirichai; Muraishi, Shinji; Sannomiya, Takumi; Shi, Ji; Namamura, Yoshio

doi:10.1364/ol.40.004468

Cited by 8 publications

(1 citation statement)

References 23 publications

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“…The linear dependence of ML intensity of trap-controlled materials on the amplitude of the mechanical stimulus has been verified in numerous studies [4,7,15,16,159,[227][228][229][230][231][232][233][234][235][236][237]. For example, the ML intensity of SrAl 2 O 4 :Eu 2+ exhibits a linear dependence on the amplitude of the applied strain, compressive stress, strain rate, torsion, tensile stress and ultrasonic power (Fig.…”

Section: Linear and Nonlinear Relations 441 Linearitymentioning

confidence: 69%

Trap-controlled mechanoluminescent materials

Zhang

Wang

Marriott

et al. 2019

Progress in Materials Science

263

204

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Mechanoluminescence (ML) is generated during exposures of certain materials to mechanical stimuli. Many solid materials produce ML during their fracturing, however, the irreversibility of fracto-induced ML limits the practical applications of these materials. In 1999, Chao-Nan Xu discovered an intense and reproducible ML from trap-controlled materials, including ZnS:Mn 2+ and SrAl 2 O 4 :Eu 2+ , and introduced the principles and applications of hybrid inorganic/organic mechanoluminescent (ML) composites, and related sensors to visualize stress/strain in target structures. This discovery has triggered intense research interest in trap-controlled ML materials and composites over the past 2 decades. Notable achievements of this research include the development of trap-controlled materials that exhibit bright ML emission from the ultraviolet to the near infra-red, and multiscale mechano-optical sensitivities. This research has also increased our understanding of the mechanisms of ML phenomena, enabling the rational design of trap-controlled ML materials. Practical applications of ML are also being driven by the discovery that ML composites can serve as "mechano-optical sensitive skin" for structural health diagnosis, stress sensors for biomechanics, and mechanically-activated light sources. This review focuses on the design, synthesis, characterization, optimization and application of trap-controlled ML materials, and concludes with discussions on future directions of ML research and specific challenges to improve ML materials for real-world applications.

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