Bibliografías temáticas / Opto-Thermo-Acoustic

Literatura académica sobre el tema "Opto-Thermo-Acoustic"

Autor: Grafiati
Publicado: 6 de septiembre de 2023

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Artículos de revistas sobre el tema "Opto-Thermo-Acoustic"

1

Wang, Lihong V. "Ultrasound-Mediated Biophotonic Imaging: A Review of Acousto-Optical Tomography and Photo-Acoustic Tomography". Disease Markers 19, n.º 2-3 (2004): 123–38. http://dx.doi.org/10.1155/2004/478079.

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This article reviews two types of ultrasound-mediated biophotonic imaging–acousto-optical tomography (AOT, also called ultrasound-modulated optical tomography) and photo-acoustic tomography (PAT, also called opto-acoustic or thermo-acoustic tomography)–both of which are based on non-ionizing optical and ultrasonic waves. The goal of these technologies is to combine the contrast advantage of the optical properties and the resolution advantage of ultrasound. In these two technologies, the imaging contrast is based primarily on the optical properties of biological tissues, and the imaging resolution is based primarily on the ultrasonic waves that either are provided externally or produced internally, within the biological tissues. In fact, ultrasonic mediation overcomes both the resolution disadvantage of pure optical imaging in thick tissues and the contrast and speckle disadvantages of pure ultrasonic imaging. In our discussion of AOT, the relationship between modulation depth and acoustic amplitude is clarified. Potential clinical applications of ultrasound-mediated biophotonic imaging include early cancer detection, functional imaging, and molecular imaging.
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Nicola, Francesco De, Lorenzo Donato Tenuzzo, Ilenia Viola, Rujing Zhang, Hongwei Zhu, Augusto Marcelli y Stefano Lupi. "Ultimate Photo-Thermo-Acoustic Efficiency of Graphene Aerogels". Scientific Reports 9, n.º 1 (16 de septiembre de 2019). http://dx.doi.org/10.1038/s41598-019-50082-7.

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Abstract The ability to generate, amplify, mix, and modulate sound with no harmonic distortion in a passive opto-acoustic device would revolutionize the field of acoustics. The photo-thermo-acoustic (PTA) effect allows to transduce light into sound without any bulk electro-mechanically moving parts and electrical connections, as for conventional loudspeakers. Also, PTA devices can be integrated with standard silicon complementary metal-oxide semiconductor (CMOS) fabrication techniques. Here, we demonstrate that the ultimate PTA efficiency of graphene aerogels, depending on their particular thermal and optical properties, can be experimentally achieved by reducing their mass density. Furthermore, we illustrate that the aerogels behave as an omnidirectional pointsource throughout the audible range with no harmonic distortion. This research represents a breakthrough for audio-visual consumer technologies and it could pave the way to novel opto-acoustic sensing devices.
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3

Munk, Dvir, Moshe Katzman, Mirit Hen, Maayan Priel, Moshe Feldberg, Tali Sharabani, Shahar Levy, Arik Bergman y Avi Zadok. "Surface acoustic wave photonic devices in silicon on insulator". Nature Communications 10, n.º 1 (16 de septiembre de 2019). http://dx.doi.org/10.1038/s41467-019-12157-x.

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Abstract Opto-mechanical interactions in planar photonic integrated circuits draw great interest in basic research and applications. However, opto-mechanics is practically absent in the most technologically significant photonics platform: silicon on insulator. Previous demonstrations required the under-etching and suspension of silicon structures. Here we present surface acoustic wave-photonic devices in silicon on insulator, up to 8 GHz frequency. Surface waves are launched through absorption of modulated pump light in metallic gratings and thermo-elastic expansion. The surface waves are detected through photo-elastic modulation of an optical probe in standard race-track resonators. Devices do not involve piezo-electric actuation, suspension of waveguides or hybrid material integration. Wavelength conversion of incident microwave signals and acoustic true time delays up to 40 ns are demonstrated on-chip. Lastly, discrete-time microwave-photonic filters with up to six taps and 20 MHz-wide passbands are realized using acoustic delays. The concept is suitable for integrated microwave-photonics signal processing.
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Actas de conferencias sobre el tema "Opto-Thermo-Acoustic"

1

Patch, S. K. y A. Greenleaf. "Ultrasound attenuation and thermo/photo/opto-acoustic tomography: theoretical foundation". En Biomedical Optics (BiOS) 2007, editado por Alexander A. Oraevsky y Lihong V. Wang. SPIE, 2007. http://dx.doi.org/10.1117/12.701161.

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Lu, Yuerui y Amit Lal. "Acoustic speaker based on high-efficiency broadband nano-pillar photonic crystal Opto-thermo-mechanical MEMS excitation". En TRANSDUCERS 2011 - 2011 16th International Solid-State Sensors, Actuators and Microsystems Conference. IEEE, 2011. http://dx.doi.org/10.1109/transducers.2011.5969757.

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Pal, Uttam M., Arif Mohd Kamal, Ashika Nayak, Tejaswi Medisetti y Hardik J. Pandya. "Towards an opto-thermo-acoustic (OTA)-based diagnostic tool to delineate adjacent normal from cancerous tissue for cancer margin assessment". En Translational Biophotonics: Diagnostics and Therapeutics, editado por Lothar D. Lilge y Zhiwei Huang. SPIE, 2021. http://dx.doi.org/10.1117/12.2614856.

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