Results 51 to 60 of about 148,775 (300)

Second-Order Nonlinearity in Triangular Lattice Perforated Gold Film due to Surface Plasmas Resonance

open access: yesThe Scientific World Journal, 2014
We have studied the excitation second-order nonlinearity through a triangular lattice perforated gold film instead of square lattice in many papers. Under the excitation of surface plasmas resonance effect, the second order nonlinearity exists in the ...
Renlong Zhou   +7 more
doaj   +1 more source

Efficient continuous-wave nonlinear frequency conversion in high-Q Gallium Nitride photonic crystal cavities on Silicon

open access: yes, 2016
We report on nonlinear frequency conversion from the telecom range via second harmonic generation (SHG) and third harmonic generation (THG) in suspended gallium nitride slab photonic crystal (PhC) cavities on silicon, under continuous-wave resonant ...
Carlin, Jean-François   +8 more
core   +2 more sources

Infrared laser sampling of low volumes combined with shotgun lipidomics reveals lipid markers in palatine tonsil carcinoma

open access: yesMolecular Oncology, EarlyView.
Nanosecond infrared laser (NIRL) low‐volume sampling combined with shotgun lipidomics uncovers distinct lipidome alterations in oropharyngeal squamous cell carcinoma (OPSCC) of the palatine tonsil. Several lipid species consistently differentiate tumor from healthy tissue, highlighting their potential as diagnostic markers.
Leonard Kerkhoff   +11 more
wiley   +1 more source

A High-Precision Real-Time Temperature Acquisition Method Based on Magnetic Nanoparticles

open access: yesSensors
The unique magnetothermal properties of magnetic nanoparticles enable the development of a high-precision, real-time, noninvasive temperature measurement method with significant potential in the biomedical field.
Yuchang Zhu   +3 more
doaj   +1 more source

Influence of design parameters on the field current of the tooth harmonic excitation system

open access: yesIET Electric Power Applications, 2020
This study proposes a brushless hybrid excitation permanent magnet synchronous generator (HEPMSG) with rotor tooth harmonic winding. The rotor tooth harmonic electromotive force (EMF), induced by the inherent tooth harmonic magnetic field in the air gap, will provide the field current for the rotor field winding after the rectification.
Yonghong Xia   +5 more
openaire   +1 more source

Hands‐on protocol for preparing water‐soluble fractions from agri‐food samples for NMR‐based metabolomics analysis

open access: yesFEBS Open Bio, EarlyView.
This research protocol outlines a workflow for nuclear magnetic resonance (NMR)‐based metabolomics in the agri‐food sector. Using two case studies—strawberry leaves (solid matrix) and wine (liquid matrix)—it details the procedures for sample preparation, data acquisition, and processing.
Andrea Fernández‐Veloso   +4 more
wiley   +1 more source

One-Electron Ionization of Multielectron Systems in Strong Nonresonant Laser Fields

open access: yes, 2009
We present a novel approach to calculating strong field ionization dynamics of multielectron molecular targets. Adopting a multielectron wavefunction ansatz based on field-free ab initio neutral and ionic multielectron states, a set of coupled time ...
L. V. Keldysh   +5 more
core   +1 more source

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

open access: yesFEBS 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   +3 more
wiley   +1 more source

A simple oblique dip model for geomagnetic micropulsations [PDF]

open access: yesAnnales Geophysicae, 1999
It is pointed out that simple models adopted so far have tended to neglect the obliquity of the magnetic field lines entering the Earth's surface. A simple alternative model is presented, in which the ambient field lines are straight, but enter wedge ...
J. A. Lawrie, P. N. Smith
doaj   +1 more source

Theory of plasmon-enhanced high-harmonic generation in the vicinity of metal nanostructures in noble gases

open access: yes, 2010
We present a semiclassical model for plasmon-enhanced high-harmonic generation (HHG) in the vicinity of metal nanostructures. We show that both the inhomogeneity of the enhanced local fields and electron absorption by the metal surface play an important ...
A. Husakou   +4 more
core   +1 more source

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