3D Order-reduced Shell Vector Element for Electromagnetic Computation in Thin Structures

Properties of spoof plasmon in thin structures

Proceedings of The Royal Society A Mathematical Physical and Engineering Sciences ◽

10.1098/rspa.2018.0205 ◽

2018 ◽

Vol 474 (2220) ◽

pp. 20180205

Author(s):

Soumitra Roy Joy ◽

Hao Yu ◽

Pinaki Mazumder

Keyword(s):

Three Dimensional ◽

Wide Band ◽

Blue Shift ◽

Plasmon Mode ◽

Dimensional Structure ◽

Thin Structures ◽

Enhanced Sensitivity ◽

Optical Modes ◽

Specific Frequency ◽

Modulation Rate

Spoof surface plasmon polariton (SSPP) is an exotic electromagnetic state that confines light at a subwavelength scale at a design-specific frequency. It has been known for a while that spoof plasmon mode can exist in planar, thin structures with dispersion properties similar to that of its wide three-dimensional structure counterpart. We, however, have shown that spoof plasmons in thin structures possess some unique properties that remain unexplored. Our analysis reveals that the field interior to SSPP waveguide can achieve an exceptional hyperbolic spatial dependence, which can explain why spoof plasma resonance incurs red-shift with the reduction of the waveguide thickness, whereas common wisdom suggests frequency blue-shift of a resonant structure with its size reduction. In addition, we show that strong confinement can be achieved over a wide band in thin spoof plasmon structure, ranging from the spoof plasma frequency up to a lower frequency considerably away from the resonant point. The nature of lateral confinement in thin SSPP structures may enable interesting applications involving fast modulation rate due to enhanced sensitivity of optical modes without compromising modal confinement.

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Appraisal of Allowable Loads by Simplified Rules

Journal of Pressure Vessel Technology ◽

10.1115/1.3264760 ◽

1986 ◽

Vol 108 (2) ◽

pp. 131-137

Author(s):

D. Moulin

Keyword(s):

Experimental Investigation ◽

Plastic Region ◽

Thin Structures ◽

Geometric Imperfections ◽

Buckling Behavior ◽

Simplified Method ◽

Post Buckling ◽

Initial Geometric Imperfections ◽

Fast Breeder Reactors ◽

Breeder Reactors

This paper presents a simplified method to analyze the buckling of thin structures like those of Liquid Metal Fast Breeder Reactors (LMFBR). The method is very similar to those used for the buckling of beams and columns with initial geometric imperfections, buckling in the plastic region. Special attention is paid to the strain hardening of material involved and to possible unstable post-buckling behavior. The analytical method uses elastic calculations and diagrams that account for various initial geometric defects. An application of the method is given. A comparison is made with an experimental investigation concerning a representative LMFBR component.

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Cramér-Rao Bounds for Estimating the Position and Width of 3D Tubular Structures and Analysis of Thin Structures with Application to Vascular Images

Journal of Mathematical Imaging and Vision ◽

10.1007/s10851-007-0041-6 ◽

2007 ◽

Vol 30 (2) ◽

pp. 167-180 ◽

Cited By ~ 3

Author(s):

Stefan Wörz ◽

Karl Rohr

Keyword(s):

Tubular Structures ◽

Thin Structures

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Mathematical Modelings of Some Smart Materials and Structures

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.749.13 ◽

2015 ◽

Vol 749 ◽

pp. 13-16

Author(s):

Christian Licht ◽

Thibaut Weller

Keyword(s):

Smart Materials ◽

Mathematical Methods ◽

Elastic Materials ◽

Thin Structures ◽

Crystalline Materials ◽

Smart Materials And Structures

Models of smart materials and structures are derived through rigorous mathematical methods. We establish a classification of piezoelectric and piezomagnetic crystalline materials and propose simplified but accurate models of thin structures made of piezoelectric or electromagneto-elastic materials.

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