Results 41 to 50 of about 3,766 (264)

In vivo bistatic dual-aperture ultrasound imaging and elastography of the abdominal aorta

Frontiers in Physiology
Introduction: In this paper we introduce in vivo multi-aperture ultrasound imaging and elastography of the abdominal aorta. Monitoring of the geometry and growth of abdominal aortic aneurysms (AAA) is paramount for risk stratification and intervention ...
Vera H. J. van Hal, Hein de Hoop, Marc R. H. M. van Sambeek, Marc R. H. M. van Sambeek, Hans-Martin Schwab, Richard G. P. Lopata   +5 more
doaj   +1 more source

Air-Filled Bubbles Stabilized by Gold Nanoparticle/Photodynamic Dye Hybrid Structures for Theranostics

Nanomaterials, 2021
Microbubbles have already reached clinical practice as ultrasound contrast agents for angiography. However, modification of the bubbles’ shell is needed to produce probes for ultrasound and multimodal (fluorescence/photoacoustic) imaging methods in ...
Roman A. Barmin, Polina G. Rudakovskaya, Olga I. Gusliakova, Olga A. Sindeeva, Ekaterina S. Prikhozhdenko, Elizaveta A. Maksimova, Ekaterina N. Obukhova, Vasiliy S. Chernyshev, Boris N. Khlebtsov, Alexander A. Solovev, Gleb B. Sukhorukov, Dmitry A. Gorin   +11 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, Avirup Sardar, Weijie Ji, Zhongyu Liu, Rongchao Jin   +4 more
wiley   +1 more source

Inverse problem solving in semiconductor photoacoustics by neural networks

, 2021
We developed a method of inverse problem solving in semiconductor photoacoustics based on neural networks application. Simple structured neural networks, trained on a large set of data obtained by the well–known theoretical models in the 20 Hz–20 kHz ...
Markushev, Dragan D., Đorđević, Katarina Lj., Ćojbašić, Žarko М., Galović, Slobodanka   +3 more
core   +1 more source

On the feasibility of ultrasound Doppler-based personalized hemodynamic modeling of the abdominal aorta

BioMedical Engineering OnLine
Background Personalized modeling is a promising tool to improve abdominal aortic aneurysm (AAA) rupture risk assessment. Computed tomography (CT) and quantitative flow (Q-flow) magnetic resonance imaging (MRI) are widely regarded as the gold standard for
Judith Fonken, Milan Gillissen, Eline van Engelen, Marc van Sambeek, Frans van de Vosse, Richard Lopata   +5 more
doaj   +1 more source

Twenty Years of Airborne Water Vapor and Total Water Measurements of a Diode Laser Based Photoacoustic Instruments

Frontiers in Physics, 2020
We present relevant issues collected over 20 years of development and operation of an airborne water vapor/total water detector based on photoacoustic spectroscopy.
Miklós Szakáll, Miklós Szakáll, Árpád Mohácsi, Dávid Tátrai, Anna Szabó, Helga Huszár, Tibor Ajtai, Gábor Szabó, Zoltán Bozóki   +8 more
doaj   +1 more source

Application of the Photoacoustic Approach in the Characterization of Nanostructured Materials

Nanomaterials, 2022
A new generation of sensors can be engineered based on the sensing of several markers to satisfy the conditions of the multimodal detection principle. From this point of view, photoacoustic-based sensing approaches are essential. The photoacoustic effect
Mykola Isaiev, Gauhar Mussabek, Pavlo Lishchuk, Kateryna Dubyk, Nazym Zhylkybayeva, Gulmira Yar-Mukhamedova, David Lacroix, Vladimir Lysenko   +7 more
doaj   +1 more source

Photoacoustic ocular imaging [PDF]

Optics Letters, 2010
We developed a photoacoustic ocular imaging device and demonstrated its utility in imaging the deeper layers of the eye including the retina, choroid, and optic nerve. Using safe laser intensity, the photoacoustic system was able to visualize the blood distribution of an enucleated pig's eye and an eye of a living rabbit.
Adam, de la Zerda, Yannis M, Paulus, Robert, Teed, Sunil, Bodapati, Yosh, Dollberg, Butrus T, Khuri-Yakub, Mark S, Blumenkranz, Darius M, Moshfeghi, Sanjiv Sam, Gambhir   +8 more
openaire   +2 more sources

Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities

Advanced Materials, EarlyView.
This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen, Zhanxi Fan, Jingjie Ge, Qiyuan He, Zhuangchai Lai, Jiawei Liu, Chaoliang Tan, Hua Zhang   +7 more
wiley   +1 more source

Optimizing pump-probe reflectivity measurements of ultrafast photoacoustics with modulated asynchronous optical sampling

, 2023
Time-resolved optical pump-probe experiments enable the study of complex light-matter interactions on ultrafast timescales, provided that they reach sufficient sensitivity.
Sudera, P., Velsink, M. C., Witte, S., Illienko, M.   +3 more
core   +1 more source