Mechanoluminescence (ML) materials have recently attracted considerable attention due to their potential applications as
an imaging sensor for detecting damages and measuring stress distributions in complex structures, which is difficult for
conventional methods. SrAl2O4:Eu2+ (SAOE) is a ML material with the best performance but it hydrolyzes rapidly under
humid environment, which limits the scope of its applications especially in outdoor environments, e.g. structural health
monitoring for buildings, bridges and tunnels. Thus ML materials with water resistance such as silicates and
aluminosilicates have been developed, but the brightness of which is still much lower than SAOE. In this study, we
report a novel method to improve the impact-induced ML in ML materials using the swift heavy ion (SHI) irradiation.
The impact-induced ML intensity of CaSrAl2Si2O8:Eu2+ was dramatically enhanced by about one order of magnitude
using SHI irradiation. Furthermore, higher electronic stopping power and higher irradiation fluence were found to be
more effective for improving the impact-induced ML. It is considered that the trap density suitable for the impactinduced
ML was increased by the SHI irradiation, resulting in the impact-induced ML enhancement. The underlying
mechanism was discussed, which is of great importance for developing new ML materials for structure health
monitoring.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.