Results 61 to 70 of about 377,173 (291)

Two-photon dual-comb LiDAR

Optics Express, 2021
The interferometric signals produced in conventional dual-comb laser ranging require femtosecond lasers with long-term carrier-envelope offset frequency stability, and are limited to an upper sampling rate by radio-frequency aliasing considerations. By using cross-polarized dual combs and two-photon detection, we demonstrate carrier-phase-insensitive ...
Hollie Wright, Jinghua Sun, David McKendrick, Nick Weston, Derryck T. Reid   +4 more
openaire   +3 more sources

Cell‐cycle‐specific lesion evolution rather than inhibition of double‐strand‐break repair underpins cisplatin radiosensitization

Molecular Oncology, EarlyView.
We analyze cisplatin–DNA adducts (CDAs) and double‐strand breaks (DSBs) in a cell‐cycle‐dependent manner. We find that CDAs form similarly across all cell cycle phases. DSBs arise only in S‐phase. CDAs might not directly impair DSB repair, but S‐phase DSB lesions evolve in the presence of CDAs and disrupt repair in G2, also causing radiosensitization ...
Ye Qiu, Xixi Lin, Emil Mladenov, Veronika Mladenova, Jürgen Thomale, Ali Sak, Yao Wang, Yunxuan Deng, Eleni Gkika, Martin Stuschke, George Iliakis   +10 more
wiley   +1 more source

Two-photon decay of pseudoscalar quarkonia

, 2008
We report on our recent evaluation of the two-photon width of the pseudoscalar quarkonia, eta_c(nS) and eta_b(nS) in an approach based on Heavy-Quark Spin Symmetry (HQSS).
J. P. Lansberg, Joseph Cugnon, Lansberg Jean-Philippe, Nicolas Matagne, T. N. Pham   +4 more
core   +1 more source

Search for exchange-antisymmetric two-photon states [PDF]

, 1999
Atomic two-photon J=0 $\leftrightarrow$J'=1 transitions are forbidden for photons of the same energy. This selection rule is related to the fact that photons obey Bose-Einstein statistics.
A. Yu. Ignatiev, B. M. Miles, C. J. Bowers, C. N. Yang, D. Budker, D. DeMille, D. I. Fivel, E. Deveney, E. Ramberg, G. Modugno, J. J. Sakurai, K. D. Bonin, K. Deilamian, L. D. Landau, M. de Angelis, N. Derr, O. W. Greenberg, O. W. Greenberg, O. W. Greenberg, O. W. Greenberg, P. Hafner, R. C. Hilborn, R. D. Amado, R. F. Streater   +23 more
core   +4 more sources

Fluorescent two‐photon nanolithography

Journal of Microscopy, 2008
SummaryImproving the excitation conditions in two‐photon fluorescent lithography reduces the size of the fabricated structures to nanometre scales. We demonstrate that a precise control of the illumination profile and the scanning speed of the laser beam is enough to decrease the photo‐polymerization volume of resins by orders of magnitude.
Kunik, Dario, Ludueña, Silvio Juan, Costantino, S., Martinez, Oscar Eduardo   +3 more
openaire   +3 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

Visual Cortex: Two-Photon Excitement [PDF]

Current Biology, 2005
Current in vivo methods for imaging the visual cortex lack the ability to map response properties at the level of single cells. A new technique using two-photon imaging of calcium signals has now overcome this limitation.
Hübener, M., Bonhoeffer, T.
openaire   +3 more sources

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Monitoring correlates of SARS-CoV-2 infection in cell culture using a two-photon-active calcium-sensitive dye

Cellular & Molecular Biology Letters
Background The organism-wide effects of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) viral infection are well studied, but little is known about the dynamics of how the infection spreads in time among or within cells due to the scarcity ...
Domokos Máthé, Gergely Szalay, Levente Cseri, Zoltán Kis, Bernadett Pályi, Gábor Földes, Noémi Kovács, Anna Fülöp, Áron Szepesi, Polett Hajdrik, Attila Csomos, Ákos Zsembery, Kristóf Kádár, Gergely Katona, Zoltán Mucsi, Balázs József Rózsa, Ervin Kovács   +16 more
doaj   +1 more source

In vivo labeling of constellations of functionally identified neurons for targeted in vitro recordings.

Frontiers in Neural Circuits, 2011
Relating the functional properties of neurons in an intact organism with their cellular and synaptic characteristics is necessary for a mechanistic understanding of brain function. However, while the functional properties of cortical neurons (e.g. tuning
Anthony D Lien, Anthony D Lien, Massimo eScanziani   +2 more
doaj   +1 more source