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Technical Physics Letters

, Volume 45, Issue 5, pp 475–477 | Cite as

Mechanoluminescence of a Thin Composite Layer Obtained by Incorporation of SrAl2O4:(Eu2+, Dy3+) Phosphor Microparticles into a Poly(methyl methacrylate) Surface

  • A. F. BanishevEmail author
  • A. A. Banishev
Article

Abstract

A mechanoluminescent composite layer at the surface of poly(methyl methacrylate) (PMMA) was obtained by liquid-phase incorporation of SrAl2O4 : (Eu2+, Dy3+) phosphor microparticles into the polymer. The photoluminescence spectrum and kinetics of emission from the composite layer have been studied as dependent on the power density of exciting laser radiation pulses. The mechanoluminescence of the composite layer has been studied under the effect of short acoustic pulses and dynamic pressure of a solid stylus sliding over the composite layer surface. A possible mechanism of mechanoluminescence excitation is discussed. It is established that the obtained composite layer is characterized by high efficiency of the mechano-optical conversion and can be used for the detection and visualization of mechanical stresses.

Notes

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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  1. 1.Institute for Problems of Laser and Information Technologies, Federal Scientific Research Center “Crystallography and Photonics,” Russian Academy of SciencesShaturaRussia

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