Results 71 to 80 of about 1,847 (202)

Deep optoacoustic localization microangiography of ischemic stroke in mice

open access: yesNature Communications, 2023
Super-resolution optoacoustic imaging of microvascular structures deep in mammalian tissues has so far been impeded by strong absorption from densely-packed red blood cells.
Xosé Luís Deán-Ben   +15 more
doaj   +1 more source

Ultrafast Acousto-Plasmonics in Gold Nanoparticles Superlattice

open access: yes, 2015
We report the investigation of the generation and detection of GHz coherent acoustic phonons in plasmonic gold nanoparticles superlattices (NPS). The experiments have been performed from an optical femtosecond pump-probe scheme across the optical plasmon
Ayouch, A.   +7 more
core   +1 more source

Photoacoustic tomography with novel optical contrast agents based on gold nanocages or nanoparticles containing near-infrared dyes [PDF]

open access: yes, 2008
Poly(ethylene glycol)-coated Au nanocages have been evaluated as a potential near-infrared (NIR) contrast agent for photoacoustic tomography (PAT). Previously, Au nanoshells were found to be an effective NIR contrast agent for PAT; however, Au nanocages,
Skrabalak, Sara   +6 more
core   +1 more source

Cell‐in‐Shell Metacells in Single‐Cell Nanoencapsulation

open access: yesChemPlusChem, Volume 91, Issue 4, April 2026.
Metacells represent the next generation of living cell‐in‐shell architectures, chemically engineered through single‐cell nanoencapsulation and characterized by three functional hallmarks: reconfigurability, loadability, and motility. Single‐cell nanoencapsulation (SCNE) enables the direct integration of synthetic materials with living cells, forming ...
Duc Tai Nguyen   +4 more
wiley   +1 more source

Photoacoustic generation by a gold nanosphere: From linear to nonlinear thermoelastics in the long-pulse illumination regime

open access: yes, 2015
We investigate theoretically the photoacoustic generation by a gold nanosphere in water in the thermoelastic regime. Specifically, we consider the long-pulse illumination regime, in which the time for electron-phonon thermalisation can be neglected and ...
Bossy, Emmanuel   +2 more
core   +3 more sources

Amplification of Light‐Ultrasound Interaction in a Pi‐Shifted Fiber Bragg Grating for Enhanced Ultrasonic Sensitivity

open access: yesLaser &Photonics Reviews, Volume 20, Issue 7, 6 April 2026.
By precisely engineering the geometry of a fiber‐based optical resonator, the interaction between confined light and external ultrasound waves is significantly amplified without sacrificing light confinement, boosting the ultrasound detection sensitivity beyond 0.5 mPa/√Hz.
Tai‐Anh La   +2 more
wiley   +1 more source

Functional photoacoustic microscopy in vivo [PDF]

open access: yes, 2006
Functional photoacoustic microscopy is a hybrid imaging technique that detects laser induced photoacoustic waves to image biological tissues in three dimensions.
Maslov, Konstantin   +4 more
core  

Bacterial Extracellular Vesicles in Biomedical Research and Clinical Translation

open access: yesMicrobial Biotechnology, Volume 19, Issue 4, April 2026.
Bacterial membrane vesicle biomedical applications. ABSTRACT Bacterial Extracellular Vesicles (bEVs) are lipid (single‐ or double‐bilayer) nanostructures secreted by virtually all bacteria that play fundamental roles in intercellular communication and have emerged as powerful, multifunctional tools in biomedicine. Their intrinsic ability to encapsulate
Alejandro Arce‐Rodríguez   +2 more
wiley   +1 more source

BIOMEDICAL OPTOACOUSTICS

open access: yesJournal of Innovative Optical Health Sciences, 2011
Optoacoustics is a promising modality for biomedical imaging, sensing, and monitoring with high resolution and contrast. In this paper, we present an overview of our studies for the last two decades on optoacoustic effects in tissues and imaging capabilities of the optoacoustic technique.
openaire   +1 more source

Rigid Hollow Microparticles for Enhanced Focused Ultrasound Treatment Under Optoacoustic Guidance

open access: yesAdvanced Science, Volume 13, Issue 13, 3 March 2026.
By combining focused ultrasound (FUS) and acoustically active hollow borosilicate microparticles (HBMPs), we demonstrate tunable control over interparticle dynamics and their localized thermal energy deposition. Modulation of acoustic frequency and particle concentration tailors the energy delivery, allowing adaptive, material‐based regulation of ...
Nima Mahkam   +6 more
wiley   +1 more source

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