Results 41 to 50 of about 6,705 (186)

Botanical Authentication of “Espinheira-Santa” [Monteverdia ilicifolia (Mart. ex Reissek) Biral] Samples by FTIR Spectroscopy Coupled with PCA and Photoacoustic Spectroscopy

Brazilian Archives of Biology and Technology, 2023
Monteverdia ilicifolia (Mart. ex Reissek) Biral (basionym: Maytenus ilicifolia Mart. ex Reissek) (Celastraceae) is popularly known as holy thorn or “espinheira-santa” in Brazil. This herb is traditionally used for gastric and digestive problems. However,
Mylena de França Martins, Marcia Viviane Marcon, Cynthia Maria Schnekenberg Egg, Daniele Toniolo Dias, Jane Manfron, Jessica Mendes Nadal, Paulo Vitor Farago, Andressa Novatski   +7 more
doaj   +1 more source

Photoacoustic heterodyne breath sensor for real-time measurement of human exhaled carbon monoxide

Photoacoustics, 2022
A breath sensor for real-time measurement of human exhaled carbon monoxide is reported. This breath sensor is based on a novel photoacoustic heterodyne gas sensing technique, which combines the conventional photoacoustic spectroscopy with the beat ...
Biao Li, Chaofan Feng, Hongpeng Wu, Suotang Jia, Lei Dong   +4 more
doaj   +1 more source

Modelling of open photoacoustic resonators

Photoacoustics, 2020
Photoacoustic spectroscopy employs acoustic resonators for signal amplification. Resonators are usually closed, however, in some applications, open resonators are preferred. The opening deteriorates the photoacoustic signal hence reducing the sensitivity
Said Ali Said El-Busaidy, Bernd Baumann, Marcus Wolff, Lars Duggen   +3 more
doaj   +1 more source

Quartz-Enhanced Photoacoustic and Photothermal Spectroscopy

Applied Sciences, 2022
The development of innovative gas-sensing systems is fundamental in diverse research fields such as physics, chemistry, biology, medicine and environmental science [...]
Hongpeng Wu, Angelo Sampaolo
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

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

Engineering Nanoemulsions to Maximize NIR‐II Fluorescence and Preserve Photothermal Performance of a Novel Boron Difluoride Formazanate Dye

Angewandte Chemie, EarlyView.
An oil‐in‐water nanoemulsion transforms a boron difluoride formazanate (BDF) dye into a dual‐modal imaging‐guided theranostic agent (BDF‐NE). Its nonpolar oil core maximizes NIR‐II fluorescence while maintaining strong photoacoustic contrast to guide photothermal therapy with high photostability and 66.8% photothermal conversion efficiency, achieving ...
Nahyun Kwon, Francis L. Buguis, Theo Husby, Suhjung Chun, Dongling Zhang, Jiaze Wu, Benjamin Rehl, Binbing Ling, Umar Iqbal, Melissa Washington, Angie Verner, Kai Huang, Juan Chen, Joe B. Gilroy, Gang Zheng   +14 more
wiley   +2 more sources

Towards optimized naphthalocyanines as sonochromes for photoacoustic imaging in vivo

Photoacoustics, 2018
In this paper we establish a methodology to predict photoacoustic imaging capabilities from the structure of absorber molecules (sonochromes). The comparative in vitro and in vivo screening of naphthalocyanines and cyanine dyes has shown a substitution ...
Mitchell J. Duffy, Oriol Planas, Andreas Faust, Thomas Vogl, Sven Hermann, Michael Schäfers, Santi Nonell, Cristian A. Strassert   +7 more
doaj   +1 more source

Double‐Transition‐Metal MXenes: Multimetallic 2D Platforms for Next‐Generation Biomedicine

Advanced Materials, EarlyView.
The present work explores recent progress in double‐transition‐metal MXenes and focuses on their potential as multifunctional biomedical nanoplatforms whose tunable optical, electronic, mechanical, and surface properties enable imaging, theranostics, antimicrobial activity, biosensing, tissue engineering, and drug delivery.
Parsa Namakiaraghi, Mohammad Mozafari, Masoud Soroush   +2 more
wiley   +1 more source

2‐Azaazulenium Hemicyanine Dyes for NIR‐II Multimodal Imaging and Combined Phototherapy

Angewandte Chemie, EarlyView.
A strategically engineered class of 2‐azaazulenium hemicyanines is developed, featuring bright fluorescence in the second near‐infrared (NIR‐II) window and multifunctional performance. SWJT‐OCH3 shows type I/II reactive oxygen species (ROS) generation and excellent photothermal activity.
Min Peng, Bing‐Ya Wang, Hai Xu, Qiang Wang, Rong‐Dan Xiao, Rui Tan, Yu Peng, Ya‐Wen Wang, Juyoung Yoon   +8 more
wiley   +2 more sources