Results 81 to 90 of about 60,263 (232)

Photoacoustic Gas Sensing Using a Novel Fluidic Microphone Based on Thermal MEMS

Sensors
Photoacoustic 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, Anant Bhardwaj, Achim Bittner, Alfons Dehé   +3 more
doaj   +1 more source

Rapid High-Resolution Mosaic Acquisition for Photoacoustic Remote Sensing

Sensors, 2020
Mechanical stages are routinely used to scan large expanses of biological specimens in photoacoustic imaging. This is primarily due to the limited field of view (FOV) provided by optical scanning.
Saad Abbasi, Kevan Bell, Parsin Haji Reza   +2 more
doaj   +1 more source

Nanomedicine Meets Immunotherapy: Advancing Adoptive Cell Therapy with Nanoparticles in the Treatment of Cancer with Sustainability Perspectives

Advanced Science, EarlyView.
This review surveys nanoparticle‐based strategies to enhance adoptive cell therapy, particularly CAR‐T cell approaches, in solid tumor treatment. It describes how nanoparticles can improve tumor immunogenicity and T‐cell infiltration while reducing toxicity, and how they enable in vivo CAR‐T cell generation.
Erica Frostegård, Tatiana Bobrova, Amalie Leinebø, Thibault Leray, Shayamita Ghosh, Lorena García‐Hevia, Chiara Puccinelli, Lorenzo Riccio, Jacopo Sorani, Davide Bonifazi, Julien Caumartin, Emmanuel Donnadieu, Florence Gazeau, Roland Hischier, Else Marit Inderberg, Mónica L. Fanarraga, Maria Loustau, Bernd Nowack, Sébastien Wälchli, Cécilia Ménard‐Moyon   +19 more
wiley   +1 more source

Isotope-Selective Gas Sensing Using Photoacoustic Non-Dispersive Spectroscopy

Proceedings
The 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, Loay Marouani, Alvaro Ortiz Perez, Peter Kreuzaler, Stefan Palzer   +4 more
doaj   +1 more source

NIR‐II Imaging‐Guided Photothermal Activation of a TRPV4‐Targeted Nanoplatform Delivering Cycloastragenol to Promote Microglia Reprogramming and α‐Synuclein Clearance in Parkinson's Disease

Advanced Science, EarlyView.
ABSTRACT Current therapies for Parkinson's disease (PD) fail to concurrently address α‐synuclein (α‐syn) aggregation and microglia‐mediated neuroinflammation. Herein, we engineer a near‐infrared‐II (NIR‐II) phototheranostic nanoplatform, CAG/FD1080@MM‐aTRPV4, for synergistic regulation of microglial function and real‐time monitoring of PD pathology. We
Hsuan Lo, Linjuan Feng, Shiying Li, Lik Hang Hugo Tse, Xuehan Wang, Xingyang Zhao, Shaoheng Ma, Xin Li, Yanjuan Gu, Wing‐Tak Wong   +9 more
wiley   +1 more source

Photoacoustic ultrasound sources from diffusion-limited aggregates

, 2016
Metallic diffusion-limited aggregate (DLA) films are well-known to exhibit near-perfect broadband optical absorption. We demonstrate that such films also manifest a substantial and relatively material-independent photoacoustic response, as a consequence ...
Alexander Kotlerman, David M. Weld, Eli Wolf, Harris L., Krutik Patel, Morgan Brubaker, Robert Salazar   +6 more
core   +2 more sources

Real‐Time In Vivo Visualization of Tumor‐Associated Macrophage Reprogramming Using a Nitric Oxide‐Activatable NIR‐II Nanoinducer

Advanced Science, EarlyView.
Reprogramming tumor‐associated macrophages is a promising therapeutic strategy for solid tumors. Here, a nitric oxide (NO)‐activatable NIR‐II fluorescence/photoacoustic nanoinducer (I/E@M2pep) that simultaneously facilitates and visualizes the repolarization of TAMs to an M1‐like phenotype is reported, thereby enhancing anti‐tumor efficacy through M1 ...
Qian Chen, Meng Li, Tuanwei Li, Chen Yang, Xiaohu Yang, Hongchao Yang, Yejun Zhang, Chunyan Li, Qiangbin Wang   +8 more
wiley   +1 more source

Quantitative photoacoustic tomography with piecewise constant material parameters [PDF]

, 2015
The goal of quantitative photoacoustic tomography is to determine optical and acoustical material properties from initial pressure maps as obtained, for instance, from photoacoustic imaging.
Naetar, Wolf, Scherzer, Otmar
core  

Engineering Microbial Particles for Next‐Generation Biomedical Platforms

Advanced Science, EarlyView.
Microbe‐derived particles (MDPs), which include extracellular vesicles, outer membrane vesicles, inclusion bodies, polysaccharide particles, and virus‐like particles, represent a rapidly expanding category of bioinspired nanomaterials. With their natural origin, intrinsic biocompatibility, and highly programmable functionality, MDPs serve as a ...
Yuting Li, Yunjie Lu, Ziyan Huang, Jianjiang Chen, Yanbin Liu, Lei Qin, Chao Wang, Yumin Wu   +7 more
wiley   +1 more source

Small-Size Resonant Photoacoustic Cell of Inclined Geometry for Gas Detection

, 2009
A photoacoustic cell intended for laser detection of trace gases is represented. The cell is adapted so as to enhance the gas-detection performance and, simultaneously, to reduce the cell size.
A. L. Ulasevich, A. Miklos, A. Olafsson, A. V. Gorelik, A.A. Kosterev, A.A. Kosterev, A.K.Y. Ngai, A.V. Gorelik, B.A. Paldus, D. Hofstetter, E. Huang, F. N. Nikonovich, F.G.C. Bijnen, F.J.M. Harren, F.R.E. Gruijl, J. Oomens, L.R. Narasimhan, M. P. Zakharich, M.B. Pushkarsky, M.M.J.W. Herpen van, N. S. Kazak, P. Kestler, R. Flindt, R. Lewicki, R.A. Rooth, R.F. Curl, S. Bernegger, S.L. Firebaugh, V. A. Firago, V. S. Starovoitov, V.P. Zharov, V.S. Starovoitov, V.S. Starovoitov, W. Urban, W.J. Witteman   +34 more
core   +1 more source