Results 51 to 60 of about 374,441 (328)

Solitary electromagnetic waves propagation in the asymmetric oppositely-directed coupler

open access: yes, 2009
We consider the electromagnetic waves propagating in the system of coupled waveguides. One of the system components is a standard waveguide fabricated from nonlinear medium having positive refraction and another component is a waveguide produced from an ...
A. Hasegawa   +7 more
core   +1 more source

Bimodal waveguide interferometer RI sensor fabricated on low-cost polymer platform [PDF]

open access: yes, 2019
A refractive index sensor based on bimodal waveguide interferometer is demonstrated on the low-cost polymer platform for the first time. Different from conventional interferometers which make use of the interference between the light from two arms ...
Liang, Yuxin   +3 more
core   +2 more sources

Integrated Metallo‐Dielectric 3D Hotspots From High Refractive Index Nanodiamond‐Plasmonic Gold Cryosoret Nano‐Assemblies for Photonic Crystal Enhanced Fluorescence

open access: yesAdvanced Functional Materials, EarlyView.
This work presents a novel sensing platform using metallo‐dielectric cryosoret nano‐assemblies and lossless photonic crystals to overcome limitations of conventional plasmonic biosensors. The hybrid system enhances both electric and magnetic field interactions, enabling amplified fluorescence, ultralow detection limits, and prism‐free, objective‐free ...
Seemesh Bhaskar   +5 more
wiley   +1 more source

Design and performance of an erbium-doped silicon waveguide detector operating at 1.5 µm [PDF]

open access: yes, 2002
A new concept for an infrared waveguide detector based on silicon is introduced. It is fabricated using silicon-on-insulator material, and consists of an erbium-doped p-n junction located in the core of a silicon ridge waveguide.
Coffa, S.   +3 more
core  

Stability of the magnetic Schr\"odinger operator in a waveguide

open access: yes, 2004
The spectrum of the Schr\"odinger operator in a quantum waveguide is known to be unstable in two and three dimensions. Any enlargement of the waveguide produces eigenvalues beneath the continuous spectrum.
Balinsky A. A.   +7 more
core   +1 more source

Chirped gratings in integrated optics [PDF]

open access: yes, 1977
Gratings with variable periods (chirped gratings) have been fabricated by recording the interference pattern of a collimated laser beam with a converging beam generated by a cylindrical lens.
Katzir, A.   +3 more
core   +1 more source

SMaRT Stacking: A Methodology to Produce Optimally Layered EMI Shields with Maximal Green Index Using Fused Deposition Modeling

open access: yesAdvanced Functional Materials, EarlyView.
Electromagnetic interference (EMI) shields consisting of polylactic acid (PLA) in layers with different concentrations of multiwalled carbon nanotubes (MWCNT) are produced using additive manufacturing. The permittivity function of layers with different filler concentrations is learned using data of homogeneous and randomly ordered shields.
Stijn De Smedt   +5 more
wiley   +1 more source

Method of calculating the parameters of ultrasonic super-high-frequency transducers

open access: yesТехнологія та конструювання в електронній апаратурі, 2013
The paper presents a method of calculating the parameters of half-wave package ultrasonic piezoelectric emitters and step waveguides, which has an error no more than 6—8%.
V. L. Lanin, I. B. Petukhov
doaj  

Waveguide-Mode Sensors as Aptasensors

open access: yesSensors, 2012
Aptamers are artificial nucleic acid ligands that can be generated by in vitro selection through partition and amplification. Aptamers can be generated against a wide range of biomolecules through the formation of versatile stem-loop structures.
Makoto Fujimaki   +2 more
doaj   +1 more source

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