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. 2022 Aug 28;12(17):2980. doi: 10.3390/nano12172980

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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The CA z-scan measurements of the Au NP sample with a concentration of 8 mg/L for different excitation wavelengths that ranged from 740 to 820 nm (a–e) at a constant average power of 1.4 W nm.

The CA z-scan measurements of the Au NP sample with a concentration of 8 mg/L for different excitation wavelengths that ranged from 740 to 820 nm (a–e) at a constant average power of 1.4 W nm.