期刊
PHOTONS PLUS ULTRASOUND: IMAGING AND SENSING 2022
卷 11960, 期 -, 页码 -出版社
SPIE-INT SOC OPTICAL ENGINEERING
DOI: 10.1117/12.2609744
关键词
Photoacoustics; Laser Ultrasound; High-frequency Ultrasound; Nanostructured Materials; GUV's; Material Inspection
资金
- PT2020 through COMPETE programme [39704]
- Portuguese Science Foundation [UIDB/00313/2020, PTDC/QUI-OUT/0303/2021]
- Fundação para a Ciência e a Tecnologia [PTDC/QUI-OUT/0303/2021] Funding Source: FCT
In this study, it was demonstrated that the interaction between short laser pulses and tailor-made nanostructured materials can generate broadband high-frequency ultrasound. The potential applications of this technology include non-destructive ultrasound interaction with biological membranes and non-invasive material inspection.
In the present work we show that the interaction between short lasers pulses and tailor-made nanostrucured materials can produce broadband high-frequency ultrasound. In order to obtain efficient light-to-pressure conversion we used nanostructured carbon nanotubes permeated with high thermal expansion polydimethylsiloxane and nanometric TiO2 particles with adsorbed dye infused polystyrene. It is possible to achieve ultrasound pulses with central frequencies of 80 MHz and bandwidths of 125 MHz (at -6 dB) using a 6 ns pulsed laser. The aforementioned materials are used in order to establish proof-of-concept of the non-destructive ultrasound pulses interaction with biological membranes, exemplified by the unloading of Green Fluorescence Protein from giant unilamellar vesicles, and of non-invasive material inspection, illustrated with the measurement of the thickness of thin paint layers based on ultrasound frequency attenuation.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据