Results 101 to 110 of about 92,210 (293)
Photoacoustic Gas Sensing Using a Novel Fluidic Microphone Based on Thermal MEMS
SensorsPhotoacoustic spectroscopy (PAS) is a powerful technique for selective gas detection; however, its performance in non-resonant configurations is fundamentally constrained by the poor low-frequency response of conventional acoustic detectors.
Akash Gupta +3 more
doaj +1 more source
Boosting Photo‐Pyroelectric Effect via Tunable Polarization and Interfacial Defect Engineering
Advanced Science, EarlyView.This study reports Ba(Ti0.85Zr0.15)O3 nanocatalysts with enhanced polarization and oxygen‐vacancy‐rich interfaces for efficient NIR‐II photo‐pyroelectric therapy. Zr doping boosts the pyroelectric coefficient and accelerates polarization switching, while oxygen vacancies improve photothermal conversion and surface reactivity.
Yanli Huang +13 more
wiley +1 more source
Isotope-Selective Gas Sensing Using Photoacoustic Non-Dispersive Spectroscopy
ProceedingsThe flow of carbons into the citric acid cycle can be readily traced by supplementation with 13C stable isotope labelled nutrients. However, the quantification of the amount of fully oxidised nutrients to carbon dioxide is a challenging task.
Gabriel Rodriguez Gutierrez +4 more
doaj +1 more source
Bone Chemical Composition Analysis Using Photoacoustic Technique
Frontiers in Physics, 2020 Photoacoustic (PA) signal analysis based on ultrasonic wave detection can provide both high-sensitivity optical contrast information and micro-architectural information which is highly related with the chemical composition of tissue.
Ting Feng +6 more
doaj +1 more source
Quantitative Photoacoustic Imaging in the Acoustic Regime using SPIM
, 2017 While in standard photoacoustic imaging the propagation of sound waves is modeled by the standard wave equation, our approach is based on a generalized wave equation with variable sound speed and material density, respectively.
Beigl, Alexander +3 more
core +1 more source
Intelligent Soft Opto‐Magnetic Robot for Minimally Invasive Interventional Therapy
Advanced Science, EarlyView.An intelligent soft opto‐magnetic (iSOM) robot is developed that integrates remote magnetic actuation, skin‐mimic tactile perception, and photothermal ablation in a near‐millimeter‐scale design. It enables precise intraluminal navigation and localized ablation while providing real‐time optical feedback to support safe and accurate minimally invasive ...
Jingjing Guo +13 more
wiley +1 more source
, 2018 Photoacoustic imaging (PAI) is an emerging biomedical imaging modality capable of providing both high contrast and high resolution of optical and UltraSound (US) imaging.
Mahloojifar, Ali +2 more
core +1 more source
Advanced Science, EarlyView.Disrupted neurovascular coupling contributes to ovarian dysfunction in polycystic ovary syndrome. Using near‑infrared II long‑wavelength imaging, this study visualizes how electroacupuncture dynamically regulates ovarian blood vessels in vivo. Immediate and cumulative stimulation elicit distinct vascular responses via a Netrin‐1 dependent mechanism ...
Yicong Wang +15 more
wiley +1 more source
, 2018 Behavior of the photoacoustic signal produced by nanoparticles as a function of their concentration was studied in detail. As the concentration of nanoparticles is increased in a sample, the peak-to-peak photoacoustic amplitude increases linearly up to a
Alba-Rosales, J. E. +5 more
core +1 more source
Advanced Science, EarlyView.Fluorinated N‐oxide aza‐BODIPY nanoemulsions integrate fluorination‐driven molecular design with co‐assembly in fluorinated oil for multimodal imaging‐guided phototherapy. The co‐assembly redshifts fluorescence into the NIR‐II window for deep‐tissue imaging and provides a unified 19F signal for background‐free, quantitative MRI.
Anfeng Li +5 more
wiley +1 more source