Results 21 to 30 of about 6,670,598 (322)
Fabrication robustness in BIC metasurfaces
Nanophotonics, 2021 All-dielectric metasurfaces supporting photonic bound states in the continuum (BICs) are an exciting toolkit for achieving resonances with ultranarrow linewidths.
Kühne Julius +5 more
doaj +1 more source
IEEE Journal of Microwaves, 2022 This paper proposes a method to develop an analytical model and/or numerical resolution of the quality factor of quarter-wavelength n-section coaxial stepped impedance resonators (SIRs).
Jessica Benedicto +3 more
doaj +1 more source
Optimization of the Spatial Configuration of Local Defects in Phononic Crystals for High Q Cavity
Frontiers in Mechanical Engineering, 2020 Defects can be introduced within a 2-D periodic lattice to realize phononic cavities or phononic crystal (PnC) waveguides at the ultrasonic frequency range. The arrangement of these defects within a PnC lattice results in the modification of the Q factor
Delfino Reyes +7 more
doaj +1 more source
High quality factor measured in fused silica [PDF]
, 2000 We have measured the mechanical dissipation in a sample of fused silica drawn into a rod. The sample was hung from a multiple-bob suspension, which isolated it from rubbing against its support, from recoil in the support structure, and from seismic noise.
Gretarsson, Andri M. +7 more
core +3 more sources
Gaps in Hospice and Palliative Care Research: A Scoping Review of the North American Literature
Journal of Aging Research, 2020 Background. The demand for hospice and palliative care is growing as a result of the increase of an aging population, which is most prominent in North America. Despite the importance of the topic and an increase in hospice and palliative care utilization,
Rebecca Antonacci +10 more
doaj +1 more source
Empirical Quality Factor Prediction of Quarter-Mode Substrate Integrated Waveguide Resonators
IEEE Journal of Microwaves, 2021 Quarter-mode substrate integrated waveguide (QMSIW) is an effective technique to reduce the size of filters designed on SIW technology. An accurate prediction of the unloaded quality factor of QMSIW resonators helps to estimate the insertion loss of ...
Nawaf R. Almuqati +2 more
doaj +1 more source
A Live Extensible Ontology of Quality Factors for Textual Requirements [PDF]
, 2022 Quality factors like passive voice or sentence length are commonly used in research and practice to evaluate the quality of natural language requirements since they indicate defects in requirements artifacts that potentially propagate to later stages in the development life cycle.
arxiv +1 more source
A Dielectric Resonator Antenna with Enhanced Gain and Bandwidth for 5G Applications
Sensors, 2020 In this paper, a dielectric resonator antenna (DRA) with high gain and wide impedance bandwidth for fifth-generation (5G) wireless communication applications is proposed. The dielectric resonator antenna is designed to operate at higher-order T E &#
Irfan Ali +3 more
doaj +1 more source
Fabrication-tolerant high quality factor photonic crystal microcavities [PDF]
, 2003 A two-dimensional photonic crystal microcavity design supporting a wavelength-scale volume resonant mode with a calculated quality factor (Q) insensitive to deviations in the cavity geometry at the level of Q~2x10^4 is presented.
Barclay, Paul E. +2 more
core +2 more sources
Considerations on a revision of the quality factor [PDF]
, 1988 A modified analytical expression is proposed for the revised quality factor that has been suggested by a liaison group of ICRP and ICRU. With this modification one obtains, for sparsely ionizing radiation, a quality factor which is proportional to the ...
Hahn, K., Kellerer, Albrecht M.
core +1 more source