Results 211 to 220 of about 51,311 (264)

Label-free multimodal nonlinear microscopy enabled by an optical parametric generator. [PDF]

APL Photonics
De la Cadena A, Aksamitiene E, Ho RJ, Bhargava R, Boppart SA.   +4 more
europepmc   +1 more source

Technical development of two-photon optogenetic stimulation and its potential application to brain-machine interfaces. [PDF]

Neurophotonics
Hira R, Isomura Y.
europepmc   +1 more source

Electrical excitation of self-hybridized exciton polaritons in a van der Waals antiferromagnet. [PDF]

Sci Adv
Ziegler JD, Papadopoulos S, Moilanen AJ, Martínez M, Lin Q, Mosina K, Taniguchi T, Watanabe K, Sofer Z, Dirnberger F, Novotny L.   +10 more
europepmc   +1 more source

4Pi stimulated Raman scattering for label-free super-resolution chemical imaging. [PDF]

Sci Adv
Kim JI, Ellsworth Z, Dunnington EL, Wong BS, Mehta NR, Zensho C, Fu D.   +6 more
europepmc   +1 more source

Slow deep breathing reduces muscle sympathetic nerve activity and improves breathing efficiency in pulmonary hypertension. [PDF]

ERJ Open Res
Plunkett MJ, Sayegh ALC, Lewis RA, McWilliams TJ, Sithamparanathan S, Paton JFR, Fisher JP.   +6 more
europepmc   +1 more source

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Straight wires with arbitrary excitation and loading

IEEE Transactions on Antennas and Propagation, 1967
A general analysis of straight wire antennas and scatterers, with arbitrary excitation and loading, is given. The resulting formulas are in matrix notation, in a form suitable for programming on a digital computer. Many numerical results for input admittances, current distributions, radiation patterns, and scattering cross sections of various antennas ...
J Mautz
exaly   +2 more sources

Calculation of RF Peak Power for 2D Arbitrary Shape Excitation in MRI

2005 IEEE Engineering in Medicine and Biology 27th Annual Conference, 2005
An exact formula has been derived to calculate the required RF (B1) peak power for 2D arbitrary shape excitation in MRI with rectilinear K-space trajectory. An approximate formula has also been derived for spiral trajectory.
Qin Qin
exaly   +3 more sources

GHz ultrasonics with arbitrary code excitation

2013 IEEE International Ultrasonics Symposium (IUS), 2013
Recently we developed a high frequency coded signal ultrasound microscope based on quadrature modulation [1, 2]. The device allowed pulse-echo operation at 300 MHz, however, local oscillator crosstalk reduced the SNR of pulse compression. To achieve GHz-range operation we present an improved design with new RF-components. The new design improved SNR by
A. I. Merilainen, V. Kananen, C. Fridlund, J. Eskelinen, E. Haeggstrom, K. Raum   +5 more
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Arbitrary excitation of atomic hydrogen at high energies

Physical Review A, 1990
Because of the growing need of excitation cross-section data of atomic hydrogen by fully stripped heavy ions for the preparation of an atomic database for neutral-beam penetration in large tokamaks, we have calculated these data in the framework of the first-order Born approximation for {ital n}{le}20 in the energy range of 0.1 to 1.5 MeV/amu.
, Mandal, , Mandal, , Mukherjee
openaire   +2 more sources

Arbitrary holographic spectral shaping of plasmonic broadband excitations

Optics Letters, 2015
We demonstrate a new method for controlling the broadband excitations of surface plasmons. This method is based on computer-generated holographic gratings and enables not only the coupling of the broadband illumination with surface plasmons, but also the arbitrary shaping of their spectra.
Yuval Tsur, Itai Epstein, Ady Arie
openaire   +2 more sources