期刊
OPTICS EXPRESS
卷 21, 期 11, 页码 12976-12986出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.21.012976
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资金
- CREST program of JST
- State Scholarship Fund of China [2010626112]
The elastico-mechanoluminescence (EML) properties of CaZnOS:Mn2+ are investigated. The CaZnOS:Mn2+/epoxy resin composite can simultaneously feel (sense) and see (image) various types of mechanical stress over a wide energy and frequency range (ultrasonic vibration, impact, friction and compression) as an intense red emission (610 nm) from Mn2+ ions. Further, the accurate linear relation between emission intensity and different stress parameters (intensity, energy and deformation rate) are confirmed. The EML mechanism is explained using a piezoelectrically induced trapped carrier excitation mode. All the results imply that CaZnOS:Mn2+ has potential as a stress probe to sense and image multiple mechanical stresses and decipher the stress intensity distribution. (C) 2013 Optical Society of America
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