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Novel features of the confinement factor in a plasmonic waveguide
2010 IEEE Photonics Society Winter Topicals Meeting Series (WTM), 2010We considered the net modal gain and the confinement factors for semiconductor gain and metal loss in a metal-semiconductor-metal waveguide. We found that these confinement factors can have extraordinarily large values and can be gain-dependent and strongly enhanced by pumping in the semiconductor.
D. B. Li, C. Z. Ning
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Analysis of the optical confinement factor in semiconductor lasers
Journal of Applied Physics, 1996We derive formulas for the optical confinement factor Γ from Maxwell’s equations for TE and TM modes in the slab waveguide. The numerical results show that the formulas yield correct mode gain for the modes propagating in the waveguide. We also compare the formulas with the standard definition of Γ as the ratio of power flow in the active region to the
Yong-Zhen Huang, Zhong Pan, Rong-Han Wu
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Design Factors in Fountain Confined Conical Spouted Beds
Chemical Engineering and Processing - Process Intensification, 2020Abstract The design factors of fountain confined conical spouted beds have been assessed in order to determine their best combination for scaling up and enhancing fine particle retention. The results evidence that the length of the confiner and the height of the draft tube entrainment zone are the key design factors, causing the highest entrainment ...
Idoia Estiati +5 more
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Persistence Lengths and Structure Factors of Wormlike Polymers under Confinement
The Journal of Physical Chemistry B, 2008The behavior of semiflexible chains modeling wormlike polymers such as DNA and actin in confined spaces was explored by coarse-grained Monte Carlo simulations. The persistence length P, mean end-to-end distance R2, mean radius of gyration Rg2, and the size ratio R2/Rg2 were computed for chains in slits, cylinders, and spheres.
Peter, Cifra +2 more
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Factors affecting women’s choice in selecting confinement centre
25th Annual European Real Estate Society Conference, 2018Pregnancy is another stage of life after marriage. Normal pregnancy takes 38 to 42 weeks which results in the birth of an infant. After the delivery, postnatal care is practiced to restore mother’s balance and health and to avoid illnesses in future. Support, assistance, health care, right nutrition’s and knowledge sharing are very important to the new
Amalina Azmi, Raja Aziz, Zufara Zulfakar
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Field confinement and quality factor of the multilayer cavity resonators
Journal of Applied Physics, 2011The field confinement aspect of a multilayer cavity resonator formed by a one-dimensional photonic crystal with prism wedge configuration is described in this paper. The prism wedge consists of alternating dielectric layers and is used for the construction of polygon multilayered structures with different symmetries like C4v-square and C6v-hexagon ...
N. Yogesh, V. Subramanian
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Peculiar features of confinement factors in a metal-semiconductor waveguide
Applied Physics Letters, 2010The concept of confinement factor (CF) is analyzed for a metal-semiconductor-metal (MSM) waveguide near the surface plasmon resonance. We show that the CF is inversely proportional to the average energy velocity, and thus can be enhanced by the slowing down of energy propagation.
D. B. Li, C. Z. Ning
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Confinement factors and optical gain in subwavelength plasmonic resonators
Journal of Applied Physics, 2010We define the confinement factor for a subwavelength resonator, present a simple approach to calculate it numerically, and demonstrate that by using a specific resonator based on a silver rod coated with active material. Unlike the common approach of using the profile of the resonant electromagnetic mode, our formulation relies on using the ...
A. V. Maslov, M. Miyawaki
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[Solitary confinement as risk factor for psychiatric hospitalization].
Psychiatria clinica, 1984The subjects of this study are prisoners who were hospitalized from custody in a psychiatric clinic. All of such patients of one psychiatric clinic during the period from 1976 till 1978 were compared with a random sample of other psychiatric patients using case reports and other data. Differences were found concerning social, personal, psychiatric, and
R, Volkart +4 more
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Confinement as a key factor in loess erosion and stability
Loess covers approximately 10% of the Earth’s land surface. Despite its ability to maintain vertical cliffs, loess is highly susceptible to rapid internal erosion, leading to the formation of pipes, tunnels, and gullies. These in turn can lead to ground collapse or rapid transport of contaminants.Tomáš Weiss +3 more
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