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Radiation of Dynamic Toroidal Moments.

ABSTRACT: Dynamic toroidal dipoles, a distinguished class of fundamental electromagnetic sources, receive increasing interest and participate in fascinating electrodynamic phenomena and sensing applications. As described in the literature, the radiative nature of dynamic toroidal dipoles is sometimes confounded, intermixing with static toroidal dipoles and plasmonic dark modes. Here, we elucidate this issue and provide proof-of-principle experiments exclusively on the radiation behavior of dynamic toroidal moments. Optical toroidal modes in plasmonic heptamer nanocavities are analyzed by electron energy loss spectroscopy and energy-filtered transmission electron microscopy supported by finite-difference time-domain numerical calculations. Additionally, their corresponding radiation behaviors are experimentally investigated by means of cathodoluminescence. The observed contrasting behaviors of a single dynamic toroidal dipole mode and an antiparallel toroidal dipole pair mode are discussed and elucidated. Our findings further clarify the electromagnetic properties of dynamic toroidal dipoles and serve as important guidance for the use of toroidal dipole moments in future applications.

SUBMITTER: Guo S

PROVIDER: S-EPMC6735299 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature

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Radiation of Dynamic Toroidal Moments.

Guo Surong S Talebi Nahid N Campos Alfredo A Kociak Mathieu M van Aken Peter A PA

ACS photonics 20190124 2

Dynamic toroidal dipoles, a distinguished class of fundamental electromagnetic sources, receive increasing interest and participate in fascinating electrodynamic phenomena and sensing applications. As described in the literature, the radiative nature of dynamic toroidal dipoles is sometimes confounded, intermixing with static toroidal dipoles and plasmonic dark modes. Here, we elucidate this issue and provide proof-of-principle experiments exclusively on the radiation behavior of dynamic toroida ...[more]

PMID: 31523699

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Project description:PurposeWhile there are many benefits to radiation oncology services, there can be emotional burdens in the care of patients with advanced cancer. Burnout is a prevalent problem in oncology. Existing literature suggests refocusing attention on providers' sense of purpose to protect against burnout. "Sacred moments" are moments of deep interconnection between people with accompanying spiritual emotions such as awe, joy, and gratitude. These moments naturally occur in health care settings, offering potential benefits to both patient and provider. Little is known about the prevalence and impact of sacred moments among health care workers in a radiation oncology setting.Methods and materialsWe conducted an exploratory qualitative study of 13 semi-structured interviews among physicians, registered nurses, and advanced practice providers of a radiation oncology consult service at a large National Cancer Institute-designated cancer center between March and May 2023. Interviews were recorded, transcribed, and analyzed to identify key themes. Data were systematically coded and analyzed in NVivo software and organized into a codebook organized by domains and themes.ResultsOf the 13 health care workers interviewed, 12 interviewees reported experiencing at least one sacred moment during their clinical careers. None of the interviewees were initially familiar with the term; however, all understood the concept once explained. Interview findings were organized into four domains: (1) common elements, (2) impact, (3) barriers, and (4) provider reactions. Common elements included a moment of deep interconnection between provider and patient, often involving end-of-life patients. The impact of these moments was most commonly described as an increased sense of purpose in their role. Lack of time with patients was the most common barrier.ConclusionsSacred moments are commonly experienced by health care workers in a radiation oncology consult service. They helped to humanize the patient, buffer against provider burnout, and increase a sense of purpose and job satisfaction.

Dataset Information

Radiation of Dynamic Toroidal Moments.

Publications

Radiation of Dynamic Toroidal Moments.

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