Results 11 to 20 of about 8,784 (238)
Whispering Gallery States of Antihydrogen [PDF]
Physical Review A 85 (2012) 014902, 2011 We study theoretically interference of the long-living quasistationary quantum states of antihydrogen atoms, localized near a concave material surface. Such states are an antimatter analog of the whispering gallery states of neutrons and matter atoms, and similar to the whispering gallery modes of sound and electro-magnetic waves.
Voronin, A. Yu. +2 more
arxiv +4 more sources
Bound states in the continuum in whispering gallery resonators with pointlike impurities [PDF]
Scientific ReportsWhispering gallery resonators offer a versatile platform for manipulating the photonic transmission. Here, we study such a system, including periodically distributed pointlike impurities along the resonator with ring geometry.
M. A. Figueroa +2 more
doaj +2 more sources
Optical whispering-gallery mode barcodes for high-precision and wide-range temperature measurements [PDF]
Light: Science & Applications, 2021 Temperature measurement: optical barcodes from whispering-gallery sensors Extremely precise measurement of temperature using devices known as whispering-gallery mode (WGM) sensors can be greatly improved using a technique that simultaneously monitors ...
Jie Liao, Lan Yang
doaj +2 more sources
Optical Whispering-Gallery-Mode Microbubble Sensors [PDF]
Micromachines, 2022 Whispering-gallery-mode (WGM) microbubble resonators are ideal optical sensors due to their high quality factor, small mode volume, high optical energy density, and geometry/design/structure (i.e., hollow microfluidic channels).
Xuyang Zhao +7 more
doaj +2 more sources
Ultra-high-Q tunable whispering-gallery-mode microresonator [PDF]
PRL 103, 053901 (2009), 2009 Typical microresonators exhibit a large frequency spacing between resonances and a limited tunability. This impedes their use in a large class of applications which require a resonance of the microcavity to coincide with a predetermined frequency.
Michael Pöllinger +3 more
arxiv +2 more sources
Whispering gallery mode sensors [PDF]
Advances in Optics and Photonics, 2015 We present a comprehensive overview of sensor technology exploiting optical whispering gallery mode (WGM) resonances. After a short introduction we begin by detailing the fundamental principles and theory of WGMs in optical microcavities and the transduction mechanisms frequently employed for sensing purposes.
Matthew R Foreman, Frank Vollmer
exaly +4 more sources
Photo-elasticity of silk fibroin harnessing whispering gallery modes [PDF]
Scientific Reports, 2023 Silk fibroin is an important biomaterial for photonic devices in wearable systems. The functionality of such devices is inherently influenced by the stimulation from elastic deformations, which are mutually coupled through photo-elasticity.
Nikolaos Korakas +9 more
doaj +2 more sources
Coexistence of electron whispering-gallery modes and atomic collapse states in graphene/WSe2 heterostructure quantum dots [PDF]
Nature Communications, 2022 The whispering-gallery mode and the atomic collapse state are two distinct resonances in condensed matter associated with relativistic massless charge carriers. Now, it is shown that these states can coexist in graphene/WSe2 heterostructure quantum dots.
Qi Zheng +3 more
doaj +2 more sources
In-Vivo and Ex-Vivo Measurements of Blood Glucose Using Whispering Gallery Modes [PDF]
Sensors, 2020 The permittivity of blood glucose is not a strong function of its concentration in microwave or millimeter-wave frequencies. Measuring glucose concentrations remains a challenge, particularly in the presence of interference caused by the ambient leaky ...
Louis W. Y. Liu +8 more
doaj +2 more sources
Efficient coupling of free propagating light into Whispering Gallery Modes [PDF]
EPJ Web of Conferences, 2021 Whispering Gallery Mode resonators are dielectric structures with cylindrical symmetry. They are typically excited with an evanescent field leaking out of a tapered fiber or a waveguide.
Zambrana-Puyalto Xavier +2 more
doaj +1 more source