Results 81 to 90 of about 378,947 (242)

Gas–Solid Interface‐Assisted Growth of Organic Semiconductor Single Crystals: Dimensions, Structures, Mechanisms, and Applications

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Gas–solid interface‐assisted growth strategies have unlocked precise control over crystal structure, morphology, dimension, and molecular packing. The obtained organic semiconductor single crystals represent the ideal candidates for high‐performance organic optoelectronic devices.
Tingyi Yan   +8 more
wiley   +1 more source

Efficient Integral Equation Analysis of Arbitrarily Shaped Rectangular Waveguide Discontinuities Including Conducting Objects

open access: yesIEEE Journal of Microwaves
In this contribution, an Integral Equation (IE) formulation is proposed for the analysis of microwave circuits, based on the junction of two different rectangular waveguides coupled by an arbitrarily shaped zero thickness discontinuity. These rectangular
Antonio Manuel Huescar de la Cruz   +4 more
doaj   +1 more source

Nanostructured Optical Superabsorbers from Carbon Nanotube Forest for Heat Management Using Environmental Blackbody Radiation from the Visible to Mid‐Infrared

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Our computational model of the optical absorption from multiwalled carbon nanotubes suggests the optical absorption depends strongly on the in‐plane electrical conductivity, and weakly on the through‐plane conductivity. Such strong absorption enables solar‐to‐thermal conversion for heat scavenging in cold climates and radiative cooling in hot climates,
José V. Anguita   +8 more
wiley   +1 more source

Antena Slot Waveguide Segi Empat Segala Arah pada Frekuensi 2.4 GHz

open access: yesJurnal Elektronika dan Telekomunikasi, 2016
Antena diharapkan memiliki desain dengan konstruksi yang lebih mudah, murah dan efisien. Antena slot waveguide adalah antena gelombang mikro. Antena ini berupa suatu waveguide yang mempunyai slot–slot membentuk array dan terletak pada dinding waveguide ...
Sri Hardiati   +3 more
doaj   +1 more source

Conditional Weather Regimes and Moisture Pathways Associated With Summer Rainfall Over the Southeastern United States

open access: yesInternational Journal of Climatology, EarlyView.
Persistent SEUS summer rainfall occurs within multiple recurrent circulation configurations that organize moisture convergence differently. Distinct combinations of NASH‐flank pressure anomalies, boundary moisture transport and vertical ascent can therefore support a similar regional wet state, highlighting multiple circulation–moisture pathways to ...
Priyanshi Singhai   +4 more
wiley   +1 more source

Modal Expansion Analysis of T-Shaped Waveguide

open access: yesIEEE Access, 2019
The T-shaped waveguide (T-waveguide for short) is a new kind of wideband waveguide which is easier to fabricate than conventional wideband waveguides. This paper presents the modal expansion analysis of the T-waveguide.
Huapeng Zhao, Kangning Li, Mingzhou Zhan
doaj   +1 more source

COUPLING COEFFICIENTS OF ROTATING RECTANGULAR DIELECTRIC RESONATORS WITH RECTANGULAR WAVEGUIDE

open access: yesInformation and Telecommunication Sciences, 2020
Background. A further increase in the speed of information transfer is determined by more stringent requirements for the elements of communication devices. One of the most important components of such devices is various filters, which are often made on dielectric resonators.
openaire   +4 more sources

Quantization of Polaritons Confined in Dielectric Structures

open access: yesLaser &Photonics Reviews, EarlyView.
This study addresses the limitations of the Hopfield model of strong light‐matter coupling in the case of structured dieletrics. A method to derive quantum models in the polariton basis using Bogoliubov transformation and third quantization is introduced, demonstrating how to boost interaction strength and engineer nonlocal interactions for strongly ...
Amir Rahmani   +4 more
wiley   +1 more source

Rectangular dielectric waveguide and its optimal transition to a metal waveguide [PDF]

open access: yes, 2002
The purpose of this work was to study the rectangular dielectric waveguide and its transitions to metal waveguide at millimeter wavelengths. The thesis reviews different dielectric waveguiding structures, their analysis methods and their transitions to ...
Dudorov, Sergey
core   +1 more source

Ultra‐Fast and Energy‐Efficient PZT Optical Tunable Delay Lines for Programmable Photonic Systems

open access: yesLaser &Photonics Reviews, EarlyView.
Thin‐film PZT enables optical tunable delay lines that simultaneously offer sub‐nanosecond switching, low propagation loss, and zero‐static‐power programmability. A five‐bit on‐chip delay line provides a maximum delay of 387.5 ps with a resolution of 12.5 ps, while reconfigurable MZI splitting ratios further enable non‐volatile optical arbitrary ...
Cunyu Shi   +11 more
wiley   +1 more source

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