Results 71 to 80 of about 369,945 (331)

Faster and More Accurate Time Domain Electromagnetic Simulation Using Space Transformation

open access: yesIEEE Photonics Journal, 2020
A novel finite difference time domain (FDTD) method based on space transformations is developed that overcomes the inherent obstacles of the conventional FDTD algorithm in a spatially complex domain.
Mohammadrahim Kazemzadeh   +2 more
doaj   +1 more source

COMPACT POLARIZATION PLANE ROTATOR AT A DEFINED ANGLE IN THE SQUARE WAVEGUIDE [PDF]

open access: yesРадиофизика и электроника, 2017
We have studied the possibility of designing compact polarization plane rotator electromagnetic waves on the basis of the structures with dihedral symmetry, and formed by 5-resonant slotted apertures with rectangular irises. The proposed structure allows
D. Yu. Kulik   +2 more
doaj   +1 more source

Dynamical theory of single photon transport in a one-dimensional waveguide coupled to identical and non-identical emitters [PDF]

open access: yes, 2016
We develop a general dynamical theory for studying a single photon transport in a one-dimensional (1D) waveguide coupled to multiple emitters which can be either identical or non-identical.
Liao, Zeyang   +2 more
core   +3 more sources

Freeform Phononic Waveguides [PDF]

open access: yesCrystals, 2017
We employ a recently introduced class of artificial structurally-disordered phononic structures that exhibit large and robust elastic frequency band gaps for efficient phonon guiding. Phononic crystals are periodic structures that prohibit the propagation of elastic waves through destructive interference and exhibit large band gaps and ballistic ...
Georgios Gkantzounis, Marian Florescu
openaire   +6 more sources

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

Sensing of the acoustic signal by waveguides

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2008
The work is focused on the possibilities of accoustic emission (AE) signal sensing from surfaces inaccessible for commonly used sensors. The aim of the work is to verify the possibility of assembly of several measuring devices for maximalization of the ...
Michal Černý   +2 more
doaj   +1 more source

Electric field enhancement with plasmonic colloidal nanoantennas excited by a silicon nitride waveguide

open access: yes, 2016
We investigate the feasibility of CMOS-compatible optical structures to develop novel integrated spectroscopy systems. We show that local field enhancement is achievable utilizing dimers of plasmonic nanospheres that can be assembled from colloidal ...
Boyraz, Ozdal   +4 more
core   +2 more sources

Silicon micromachined waveguides for millimeter-wave and submillimeter-wave frequencies [PDF]

open access: yes, 1993
The development of micromachining techniques to create silicon-based waveguide circuits, which can operate up to high submillimeter-wave frequencies, is reported. As a first step, a WR-10 waveguide has been fabricated from (110) silicon wafers. Insertion
McGrath, William R.   +3 more
core   +1 more source

Scattering in twisted waveguides

open access: yesJournal of Functional Analysis, 2014
28 pages; typos corrected; to appear in Journal of Functional ...
Georgi Raikov   +3 more
openaire   +6 more sources

Advanced Surface Engineering and Passivation Strategies of Quantum Dots for Breaking Efficiency Barrier of Clean Energy Technologies: A Comprehensive Review

open access: yesAdvanced Functional Materials, EarlyView.
This review describes the different surface engineering strategies for quantum dots that addresses the challenges associated with surface defects, highlighting their role in enhancing the performance of solar energy conversion technologies. Abstract Colloidal quantum dots (QDs) have garnered significant attention for their unique potential in clean ...
Kokilavani S., Gurpreet Singh Selopal
wiley   +1 more source

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