Light Delivery, Acoustic Read‐Out, and Optical Thermometry Using Ultrasound‐Induced Mechanoluminescence and the Near‐Infrared Persistent Luminescence of CaZnOS:Nd 3+

GND
1300983868
Affiliation
Otto Schott Institute of Material Research University of Jena Fraunhoferstrasse 6 07743 Jena Germany
Ding, Yicong;
GND
1310108846
Affiliation
Otto Schott Institute of Material Research University of Jena Fraunhoferstrasse 6 07743 Jena Germany
So, Byoungjin;
GND
1298975425
Affiliation
Otto Schott Institute of Material Research University of Jena Fraunhoferstrasse 6 07743 Jena Germany
Cao, Jiangkun;
GND
137687354
Affiliation
Institute of Geosciences University of Jena Carl‐Zeiss‐Promenade 10 07745 Jena Germany
Langenhorst, Falko;
GND
128981741
ORCID
0000-0002-0747-3076
Affiliation
Otto Schott Institute of Material Research University of Jena Fraunhoferstrasse 6 07743 Jena Germany
Wondraczek, Lothar

Abstract Light emission from CaZnOS:Nd 3+ by high‐intensity ultrasound excitation is demonstrated. Acoustic power and duty ratio enable simultaneous control of the degree of (local) thermo‐acoustic heating in isothermal or nonisothermal conditions. The Nd‐related photoemission provides direct thermometric feedback at an absolute sensitivity on the order of 10 −4 K −1 , within the physiological temperature range. From the individual temperature dependence of persistent luminescence and mechanoluminescence, both effects are attributed to a heterologous de‐trapping mechanism. In addition to acoustic heating and optical thermometry, this enables optical information storage and smart labeling with optoacoustic read‐out.

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