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In-line imaging and recognition of flip chip fabrication defects by real-time photoacoustic remote sensing system. [PDF]

Photoacoustics
Chen J, Ding K, Pi Y, Zhang S, Li J, Tian Z.   +5 more
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Ultrafast Photoacoustic Nanometrology of InAs Nanowires Mechanical Properties

The Journal of Physical Chemistry C, 2022
InAs nanowires are emerging as go-to materials in a variety of applications ranging from optoelectronics to nanoelectronics, yet a consensus on their mechanical properties is still lacking. The mechanical properties of wurtzite InAs nanowires are here investigated via a multitechnique approach, exploiting electron microscopies, ultrafast photoacoustics,
Marco Gandolfi, Simone Peli, Michele Diego, Stefano Danesi, Claudio Giannetti, Ivano Alessandri, Valentina Zannier, Valeria Demontis, Mirko Rocci, Fabio Beltram, Lucia Sorba, Stefano Roddaro, Francesco Rossella, Francesco Banfi   +13 more
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Optical‐resolution photoacoustic microscopy with ultrafast dual‐wavelength excitation

Journal of Biophotonics, 2020
AbstractFast functional and molecular photoacoustic microscopy requires pulsed laser excitations at multiple wavelengths with enough pulse energy and short wavelength‐switching time. Recent development of stimulated Raman scattering in optical fiber offers a low‐cost laser source for multiwavelength photoacoustic imaging.
Yingying Zhou, Siyi Liang, Mingsheng Li, Chengbo Liu, Puxiang Lai, Lidai Wang   +5 more
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Ultrafast optical resolution photoacoustic microscopy in vivo

Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 2019
Photoacoustic Imaging (PAI) is an emerging non-ionizing and non-invasive biomedical imaging method in the past few years. PAI can effectively obtain both structural and functional information of bio-tissues, providing an important method for studying the morphological structure and physiological characteristics of bio-tissues, especially suitable for ...
Jian Zeng, Wei Zhi Qi, Tian Jin, Lei Xi
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Ultrafast photoacoustic imaging with improved elevational focusing

SPIE Proceedings, 2011
Conventional photoacoustic imaging system has limited temporal resolution and hence prohibits the applications in areas such as real-time 3D imaging. In this study, an ultrafast photoacoustic imaging system with its frame rate up to 2,000Hz is demonstrated. An ultrasound transducer with plane wave excitation and a high pulse repetition rate laser are
Yu-Hsin Wang, Pai-Chi Li
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Photothermal and photoacoustic imaging by ultrafast optical sampling

The Journal of the Acoustical Society of America, 2008
We describe a new ultrafast imaging technique based on the use of two new generation Ytterbium lasers emitting at 1030 nm at 50 MHz repletion rate. Ultrafast acquisition is achieved by slightly shifting the repetition rate of the "pump" and the "probe" beams.
Stefan Dilhaire, Jean-Michel Rampnoux, Gilles Pernot, Gaetan Calbris, Stephane Grauby, Clément Rossignol, Sebastien Ermeneux, Eric Mottay   +7 more
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Ultrafast photothermal and photoacoustic measurement of solid/liquid interfaces

The Journal of the Acoustical Society of America, 1996
Ultrafast photothermal (PT) and photoacoustic (PA) investigation of a metal–solution interface was performed by using subpicosecond time-resolved transient reflectivity (TR) measurement. A polycrystalline platinum film (thickness 30 nm) vapor-deposited on a glass substrate and a polycrystalline platinum disk were investigated in air and in a variety of
Akira Harata, Akihide Hibara, Tsuguo Sawada   +2 more
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Ultrafast photothermal and photoacoustic phenomena and their applications

The Journal of the Acoustical Society of America, 1996
Photothermal techniques have been applied to investigate various physical and chemical phenomena occurring both in homogeneous systems like liquid solutions and in heterogeneous systems like surfaces and interfaces of opaque materials. It is expected that improvement of the temporal resolution in observing photothermal phenomena will provide a new ...
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Ultrafast Photoacoustic Imaging and its Application to Real-Time 3D Imaging with Improved Focusing

Ultrasonic Imaging, 2011
The restricted temporal resolution of photoacoustic imaging due to limited frame rates often prohibits its applications in areas such as real-time 3D imaging. This paper presents an ultrasound/photoacoustic multimodality imaging system that provides an ultrafast frame rate and consists of an ultrasound transducer array with plane wave excitation and a
Yu-Hsin, Wang, Pai-Chi, Li
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High‐Efficiency Photoacoustic Microscopy for Ultrafast Hemodynamic Imaging

Laser & Photonics Reviews
AbstractUnderstanding brain functions requires visualization of cerebral hemodynamics with a high spatiotemporal resolution. Recent advances utilize various scanning schemes to promote the imaging speed of photoacoustic microscopy for label‐free hemodynamic imaging.
Wei Qin, Tingting Li, Yifan Chen, Xiao Liang, Linyang Li, Heng Guo, Weizhi Qi, Lei Xi   +7 more
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