Search Results for "Fractal Nonlinear Resonance"

19:58 EDT 30th September 2014 | BioPortfolio

Original Source: Nonlinear resonance-enhanced excitation of surface plasmon polaritons.

We theoretically investigate nonlinear resonance-enhanced excitation of surface plasmon polaritons in a metal coated by a one-dimensional photonic crystal. Tunneling modes above the air-light line can be directly excited in this structure. Then, with suitable parameters, photon energy and momentum conservation between the tunneling mode and the surface plasmon polaritons can be realized by means of nonlinear four-wave mixing. Compared with the nonlinear excitation of surface plasmon polaritons in a bulk met...

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Researchers develop three-step process for building fractal nanostructures

Fancy Erector Set? Nope. The elaborate fractal structure shown at right (with a close-up below) is many, many times smaller than that and is certainly not child's play. It is the latest example of wha...

Quantum nonlinear optics — photon by photon

This review article summarizes the emerging field of quantum nonlinear optics. Three major approaches to generate optical nonlinearities based on cavity quantum electrodynamics, atomic ensembles with ...

Photodynamic therapy by in situ nonlinear photon conversion

An investigation of the use of nonlinear upconversion effects like second-harmonic generation and four-wave mixing within biological tissue indicates that it should be possible to perform photodynamic...

Giant nonlinear response from plasmonic metasurfaces coupled to intersubband transitions

Intersubband transitions in n-doped multi-quantum-well semiconductor heterostructures make it possible to engineer one of the largest known nonlinear optical responses in condensed matter systems—bu...

All-clear for nonlinear optical imaging

High power femto-second laser pulses used for in vivo nonlinear optical imaging can form DNA products, which may lead to carcinogenesis. A modified cancer risk model now shows that the cancer risk is ...

Accounting for biological aggregation in heating and imaging of magnetic nanoparticles

(World Scientific) We systematically characterize the effects of aggregation on both radiofrequency heating and magnetic resonance image (MRI) contrast of magnetic iron oxide nanoparticles, including ...

New nonlinear metamaterial is a million times better than traditional options

Read more about New nonlinear metamaterial is a million times better than traditional options

Functional magnetic resonance images reflect input signals of nerve cells

The development of magnetic resonance imaging (MRI) is a success story for basic research. Today medical diagnostics would be inconceivable without it. But the research took time to reach fruition: it...

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Radiofrequency pulse design using nonlinear gradient magnetic fields.

An iterative k-space trajectory and radiofrequency (RF) pulse design method is proposed for excitation using nonlinear gradient magnetic fields.

Fractal Gait Patterns Are Retained after Entrainment to a Fractal Stimulus.

Previous work has shown that fractal patterns in gait can be altered by entraining to a fractal stimulus. However, little is understood about how long those patterns are retained or which factors may ...

Entrainment to a real time fractal visual stimulus modulates fractal gait dynamics.

Fractal patterns characterize healthy biological systems and are considered to reflect the ability of the system to adapt to varying environmental conditions. Previous research has shown that fractal ...

A Novel Fractal Coding Method Based on M-J Sets.

In this paper, we present a novel fractal coding method with the block classification scheme based on a shared domain block pool. In our method, the domain block pool is called dictionary and is const...

Space Charge Induced Nonlinear Effects in Quadrupole Ion Traps.

A theoretical method was proposed in this work to study space charge effects in quadrupole ion traps, including ion trapping, ion motion frequency shift, and nonlinear effects on ion trajectories. The...

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