Results 41 to 50 of about 230,669 (344)

UDWDM-PON using low-cost coherent transceivers with limited tunability and heuristic DWA [PDF]

open access: yes, 2016
A new Passive Optical Network (PON) for access, making use of Ultra Dense Wavelength Division Multiplexing (UDWDM) by densely spacing channels at few GHz, and introducing the “wavelength-to-the-user” concept, is proposed.
Polo Querol, Víctor   +4 more
core   +2 more sources

Static and Dynamic Analysis of Electrostatically Actuated MEMS Shallow Arches for Various Air-Gap Configurations

open access: yesMicromachines, 2021
In this research, we investigate the structural behavior, including the snap-through and pull-in instabilities, of in-plane microelectromechanical COSINE-shaped and electrically actuated clamped-clamped micro-beams resonators.
Hassen M. Ouakad   +2 more
doaj   +1 more source

Fast Switching Ferroelectric Materials for Accelerator Applications [PDF]

open access: yes, 2006
Fast switching (< 10 nsec) measurement results on the recently developed BST(M) (barium strontium titanium oxide composition with magnesium-based additions) ferroelectric materials are presented.
Dedyk, A.   +9 more
core   +2 more sources

Colossal tunability in high frequency magnetoelectric voltage tunable inductors [PDF]

open access: yesNature Communications, 2018
AbstractThe electrical modulation of magnetization through the magnetoelectric effect provides a great opportunity for developing a new generation of tunable electrical components. Magnetoelectric voltage tunable inductors (VTIs) are designed to maximize the electric field control of permeability.
Yongke Yan   +9 more
openaire   +4 more sources

Recent Progress on Graphene-Functionalized Metasurfaces for Tunable Phase and Polarization Control

open access: yesNanomaterials, 2019
The combination of graphene and a metasurface holds great promise for dynamic manipulation of the electromagnetic wave from low terahertz to mid-infrared.
Jierong Cheng, Fei Fan, Shengjiang Chang
doaj   +1 more source

Tunability of Superconducting Metamaterials

open access: yes, 2006
Metamaterials are artificial structures with unique electromagnetic properties, such as relative dielectric permittivity and magnetic permeability with values less than 1, or even negative.
Anlage, Steven M.   +5 more
core   +1 more source

On the Efficiency Enhancement of an Actively Tunable MEMS Energy Harvesting Device

open access: yesVibration, 2022
In this paper, we propose an active control method to adjust the resonance frequency of a capacitive energy harvester. To this end, the resonance frequency of the harvester is tuned using an electrostatic force, which is actively controlled by a voltage ...
Mortaza Aliasghary   +3 more
doaj   +1 more source

Improvement of dielectric loss of doped Ba0.5Sr0.5TiO3 thin films for tunable microwave devices [PDF]

open access: yes, 2003
Al2O3-Ba0.5Sr0.5TiO3 (Al2O3-BST) thin films, with different Al2O3 contents, were deposited on (100) LaAlO3 substrate by pulsed laser deposition (PLD) technique.
C. K. Ong   +10 more
core   +2 more sources

Imaging of Microwave Permittivity, Tunability, and Damage Recovery in (Ba,Sr)TiO3 Thin Films

open access: yes, 1999
We describe the use of a near-field scanning microwave microscope to quantitatively image the dielectric permittivity and tunability of thin-film dielectric samples on a length scale of 1 micron. We demonstrate this technique with permittivity images and
Anlage, Steven M.   +7 more
core   +1 more source

Strong electrically tunable exciton g-factors in an individual quantum dots due to hole orbital angular momentum quenching [PDF]

open access: yes, 2010
Strong electrically tunable exciton g-factors are observed in individual (Ga)InAs self-assembled quantum dots and the microscopic origin of the effect is explained.
Abstreiter, G.   +9 more
core   +3 more sources

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