Results 51 to 60 of about 61,907 (317)
Urogenital photoacoustic endoscope [PDF]
Optics Letters, 2014 Photoacoustic (PA) endoscopy for human urogenital imaging has the potential to diagnose many important diseases, such as endometrial and prostate cancers. We have specifically developed a 12.7 mm diameter, rigid, side-scanning PA endoscopic probe for such applications.
Li, Chiye +8 more
openaire +3 more sources
Multimodal intravascular imaging technology for characterization of atherosclerosis [PDF]
Journal of Innovative Optical Health Sciences, 2020 Early detection of vulnerable plaques is the critical step in the prevention of acute coronary events. Morphology, composition, and mechanical property of a coronary artery have been demonstrated to be the key characteristics for the identification of ...
Yan Li, Jason Chen, Zhongping Chen
doaj +1 more source
Anodically Bonded Photoacoustic Transducer: An Approach towards Wafer-Level Optical Gas Sensors
Sensors, 2022 We present a concept for a wafer-level manufactured photoacoustic transducer, suitable to be used in consumer-grade gas sensors. The transducer consists of an anodically bonded two-layer stack of a blank silicon wafer and an 11 µm membrane, which was wet-
Simon Gassner +7 more
doaj +1 more source
Photoacoustics: a historical review [PDF]
Advances in Optics and Photonics, 2016 We review the history of photoacoustics from the discovery in 1880 that modulated light produces acoustic waves to the current time, when the pulsed variant of the discovery is fast developing into a powerful biomedical imaging modality. We trace the meandering and fascinating passage of the effect along several conceptual and methodological ...
Manohar, Srirang, Razansky, Daniel
openaire +4 more sources
Applied Sciences, 2020 The main purpose of industrial nondestructive testing (NDT) is to diagnose the stability, reliability and failure probability of materials, components and structures. Industrial component mechanical strength is one of the most important properties NDT is
Huiting Huan +5 more
doaj +1 more source
Cross-Medium Photoacoustic Communications: Challenges, and State of the Art
Sensors, 2022 The current era is notably characterized by the major advances in communication technologies. The increased connectivity has been transformative in terrestrial, space, and undersea applications. Nonetheless, the water medium imposes unique constraints on
Muntasir Mahmud +4 more
doaj +1 more source
Phase Engineering of Atomically Precise Nanoclusters (APNCs) of Gold and Beyond
Advanced Materials, EarlyView.Engineering the structural phase of materials is of paramount importance for both fundamental research and practical applications. In this Review, we summarize the recent progress in controlling the phases of atomically precise nanoclusters (APNCs) of gold, silver and copper, as well as bimetallic systems. The phase‐enabled material properties of APNCs
Yitong Wang +4 more
wiley +1 more source
In vivo demonstration of reflection artifact reduction in photoacoustic imaging using synthetic aperture photoacoustic-guided focused ultrasound (PAFUSion) [PDF]
, 2016 Reflection artifacts caused by acoustic inhomogeneities are a critical problem in epi-mode biomedical photoacoustic imaging. High light fluence beneath the probe results in photoacoustic transients, which propagate into the tissue and reflect back from ...
Steenbergen, Wiendelt +6 more
core +1 more source
Sensors, 2016 Trace gases such as nitrous oxide (N2O), methane (CH4), and carbon dioxide (CO2) are climate-related gases, and their emissions from agricultural livestock barns are not negligible.
Alexander J. Schmithausen +2 more
doaj +1 more source
Applied Sciences, 2023 Photoacoustic (PA) velocimetry holds the advantage of detecting ultrasound signals from selective targets sensitive to specific wavelengths of light irradiation.
Kotaro Fujinami, Katsuaki Shirai
doaj +1 more source