152 research outputs found
Viscoelastic optical nonlocality of low-loss epsilon-near-zero nanofilms
Optical nonlocalities are elusive and hardly observable in traditional
plasmonic materials like noble and alkali metals. Here we report experimental
observation of viscoelastic nonlocalities in the infrared optical response of
doped cadmium-oxide, epsilon-near-zero nanofilms. The nonlocality is detectable
thanks to the low damping rate of conduction electrons and the virtual absence
of interband transitions at infrared wavelengths. We describe the motion of
conduction electrons using a hydrodynamic model for a viscoelastic fluid, and
find excellent agreement with experimental results. The electrons elasticity
blue-shifts the infrared plasmonic resonance associated with the main
epsilon-near-zero mode, and triggers the onset of higher-order resonances due
to the excitation of electron-pressure modes above the bulk plasma frequency.
We also provide evidence of the existence of nonlocal damping, i.e., viscosity,
in the motion of optically-excited conduction electrons using a combination of
spectroscopic ellipsometry data and predictions based on the viscoelastic
hydrodynamic model.Comment: 19 pages, 5 figure
Public Health and Disasters: An Emerging Translational and Implementation Science, Not “Lessons Learned”
Disaster Medicine is a relatively new multidisciplinary field of science with clear public health implications as it focuses on improving outcomes for populations rather than for individual patients. As with any other scientific discipline, the goal of public health and disaster research is to create new knowledge and transfer evidence-based data to improve public health. The phrase "lessons learned" has crept into the disaster lexicon but must be permanently erased as it has no place in the scientific method. The second edition of Koenig and Schultz's Disaster Medicine: Comprehensive Principles & Practice adds to the growing knowledge base of this emerging specialty and explains why "lessons learned" should be discarded from the associated vocabulary. (Disaster Med Public Health Preparedness. 2017;11:610-611)
Новые синонимичные ряды существительных в последнем издании международной анатомической номенклатуры
МЕДИЦИНСКАЯ ТЕРМИНОЛОГИЯ СИСТЕМАТИЗИРОВАННАЯЛИНГВИСТИКАСИНОНИМ
A polymer electrolyte with high luminous transmittance and low solar throughput: Polyethyleneimine-lithium bis(trifluoromethylsulfonyl) imide with In 2
The effect of hull form and weight distribution on structural loading.
http://archive.org/details/effectofhullform02run
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