Results 61 to 70 of about 87,415 (264)

Coherent Photoacoustic-Ultrasound Correlation and Imaging [PDF]

IEEE Transactions on Biomedical Engineering, 2014
Both photoacoustics and ultrasound have been researched extensively but separately. In this letter, we report an initial study on the coherent correlation between pulsed photoacoustic wave and pulse-echo ultrasound wave. By illuminating an object with a pulsed laser and external ultrasound sequentially, both the endogenous photoacoustic wave and pulse ...
Gao, Fei, Feng, Xiaohua, Zheng, Yuanjin
openaire   +4 more sources

Raman‐based label‐free microscopic analysis of the pancreas in living zebrafish larvae

FEBS Open Bio, EarlyView.
Forward stimulated Raman scattering (F‐SRS) and epi coherent anti‐Stokes Raman scattering (E‐CARS) allow label‐free discrimination of distinct subcellular structures in the pancreas of living zebrafish larvae. Given the straightforward applicability, we anticipate broad implementation of Raman microscopy in other organs and across various biomedical ...
Noura Faraj, Eline M. F. de Lange, Klaas A. Sjollema, Ben N. G. Giepmans   +3 more
wiley   +1 more source

How to image single isolated atoms by using coherent low-energy electrons

Methods in Microscopy
Coherent low-energy electrons have been demonstrated as a practical tool for imaging individual macromolecules and two-dimensional (2D) crystals. Low-energy electrons exhibit unique properties: low radiation damage to biological molecules and high ...
Latychevskaia Tatiana
doaj   +1 more source

Breakthroughs in Photonics 2013: Fourier Ptychographic Imaging

IEEE Photonics Journal, 2014
Fourier ptychography (FP) is a recently developed computational framework for high-resolution high-throughput imaging. In this paper, we will review the latest development of the Fourier ptychographic imaging scheme.
Guoan Zheng
doaj   +1 more source

MyD88 TIR domain higher-order assembly interactions revealed by microcrystal electron diffraction and serial femtosecond crystallography

Nature Communications, 2021
MAL and MyD88 are downstream adaptors of Toll-like receptors (TLR) and the MAL TIR domain forms filaments in vitro, which in turn nucleate the assembly of crystalline arrays of the MyD88 TIR domain.
Max T. B. Clabbers, Susannah Holmes, Timothy W. Muusse, Parimala R. Vajjhala, Sara J. Thygesen, Alpeshkumar K. Malde, Dominic J. B. Hunter, Tristan I. Croll, Leonie Flueckiger, Jeffrey D. Nanson, Md. Habibur Rahaman, Andrew Aquila, Mark S. Hunter, Mengning Liang, Chun Hong Yoon, Jingjing Zhao, Nadia A. Zatsepin, Brian Abbey, Emma Sierecki, Yann Gambin, Katryn J. Stacey, Connie Darmanin, Bostjan Kobe, Hongyi Xu, Thomas Ve   +24 more
doaj   +1 more source

UiO‐66 metal–organic frameworks in biomedicine: From structural tunability to bioimaging, photodiagnostics, and photodynamic cancer therapy

FEBS Open Bio, EarlyView.
UiO‐66(Zr) metal–organic frameworks are chemically stable, biocompatible, and highly tunable nanomaterials. Their modular structure enables controlled drug delivery, multimodal bioimaging, and light‐activated photodynamic therapy, supporting integrated diagnostic and therapeutic (theranostic) applications in cancer and biomedical research.
Veronika Huntošová, Grigorii Rakhalskii, Miroslav Almáši   +2 more
wiley   +1 more source

Quantum Coherence of Image-Potential States [PDF]

Physical Review Letters, 2003
The quantum dynamics of the two-dimensional image-potential states in front of the Cu(100) surface is measured by scanning tunneling microscopy (STM) and spectroscopy (STS). The dispersion relation and the momentum resolved phase-relaxation time of the first image-potential state are determined from the quantum interference patterns in the local ...
Wahl, P., Schneider, M., Diekhöner, L., Vogelgesang, R., Kern, K.   +4 more
openaire   +4 more sources

Non-linear x-ray coherent diffractive imaging

New Journal of Physics
X-ray coherent diffractive imaging has emerged as a key technique with modern coherent x-ray sources, enabling lensless reconstruction of nanoscale structure and dynamics with high spatial and temporal resolution with even a single x-ray pulse.
Arnab Sarkar, Allan S Johnson
doaj   +1 more source

Treatment with KCL‐286, a first‐in‐class retinoic acid receptor‐β (RARβ) agonist, ameliorates neuronal DNA damage and inflammation in a mouse model of Alzheimer's disease

FEBS Open Bio, EarlyView.
Repair of neuronal DNA damage in Alzheimer's disease by KCL‐286. (A) Amyloid‐β oligomers and plaques impair neuronal DNA repair pathways, leading to DNA double‐strand breaks and glial activation. (B) KCL‐286 activates RARβ/RXR signalling via retinoic acid response elements (RAREs), associated with increased BRCA1 expression, enhanced DNA repair and ...
Natasha Hill, Hassan Yousef Othman AlMuallim, Elouisa Maddock, Carl Hobbs, Earl Clarke, Maria B. Goncalves, Jonathan P. T. Corcoran   +6 more
wiley   +1 more source

Coherent Interferometry Algorithms for Photoacoustic Imaging [PDF]

SIAM Journal on Numerical Analysis, 2012
The aim of this paper is to develop new coherent interferometry (CINT) algorithms to correct the effect of an unknown cluttered sound speed (random fluctuations around a known constant) on photoacoustic images. By back-propagating the correlations between the preprocessed pressure measurements, we show that we are able to provide statistically stable ...
Ammari, Habib, Bretin, Elie, Garnier, Josselin, Jugnon, Vincent   +3 more
openaire   +5 more sources