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Insight into Sonoluminescence Augmented by ZnO-Functionalized Nanoparticles
Veronica Vighetto1, Adriano Troia2, Marco Laurenti1
1Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Turin, Italy.
ACS Omega
|March 7, 2022
Summary
Aminopropyl-functionalized zinc oxide nanocrystals enhance ultrasound-induced sonoluminescence (SL) imaging. These semiconductor nanoparticles act as efficient nanocontrast agents for biological and biomedical applications, enabling SL measurement even at low ultrasound intensities.
Area of Science:
- Nanotechnology
- Biomedical Imaging
- Optics
Background:
- Nanosized contrast agents are crucial for advanced optical imaging.
- Sonoluminescence (SL) is an imaging technique utilizing light emission from bubble cavitation.
- Semiconductor nanoparticles offer potential for enhancing SL imaging.
Purpose of the Study:
- To investigate the use of aminopropyl-functionalized zinc oxide nanocrystals with SL imaging.
- To evaluate the effect of these nanoparticles on SL emission and spectral properties.
- To demonstrate the feasibility of nanocrystal-assisted SL imaging in biological media.
Main Methods:
- Ultrasound irradiation of water solutions containing zinc oxide nanocrystals.
- Sonoluminescence emission and spectral analysis.
- Optical imaging of SL in biological buffers.
Main Results:
- Zinc oxide nanocrystals significantly increase sonoluminescence intensity.
- Nanocrystals modify the SL spectrum, absorbing the UV component.
- Nanocrystal-assisted SL is measurable at low ultrasound intensities in biological media.
Conclusions:
- Amine-functionalized zinc oxide nanocrystals are effective for enhancing SL emission.
- These nanocrystals show promise as nanocontrast agents for SL imaging.
- The findings support their application in biological and biomedical imaging.
