The Diffraction of an obliquely incident surface wave by a submerged plane barrier

1966 ◽  
Vol 17 (6) ◽  
pp. 699-707 ◽  
Author(s):  
T. Robert Faulkner
Keyword(s):  
Surface Wave ◽  
Obliquely Incident ◽  
Plane Barrier

The scattering of an obliquely incident surface wave by a submerged fixed vertical plate

1984 ◽  
Vol 25 (6) ◽  
pp. 1780-1783 ◽  
Author(s):  
Birendranath Mandal ◽  
Sudip Kumar Goswami
Keyword(s):  
Surface Wave ◽  
Vertical Plate ◽  
Obliquely Incident

Reflection and Transmission of Obliquely Incident Surface Waves by an Edge of a Quarter Space: Theory and Experiment

1992 ◽  
Vol 59 (2) ◽  
pp. 349-355 ◽  
Author(s):  
Z. L. Li ◽  
J. D. Achenbach ◽  
I. Komsky ◽  
Y. C. Lee
Keyword(s):  
Surface Wave ◽  
Singular Integral Equations ◽  
Angle Of Incidence ◽  
Theoretical Formulation ◽  
Reflection And Transmission ◽  
Translational Invariance ◽  
Transmission Coefficients ◽  
Obliquely Incident ◽  
Quarter Space ◽  
Definition Of

The reflection and transmission of a plane time-harmonic surface wave which is obliquely incident on the edge of a quarter space is investigated theoretically, numerically, and experimentally. The theoretical formulation of the problem, which takes advantage of the translational invariance along the edge of the quarter space, is reduced to a system of singular integral equations along axes normal to the edge, for the defracted displacement components on the faces of the quarter space axes normal to the edge. The truncation of these equations leads to the definition of reflection and transmission coefficients, R and T. The equations are solved for R, T, and the diffracted displacements by the use of the boundary element method. A self-calibrated experimental technique is proposed which deploys four surface wave transducers, and which removes the effects of variable coupling between the transducers and the faces of the quarter space as the positions of the transducers are varied. The technique is particularly suited for the measurement of |R/T| as a function of the angle of incidence. Excellent agreement is observed between numerically and experimentally obtained values.

scholarly journals Negative reflection and negative surface wave conversion from obliquely incident electromagnetic waves

2018 ◽  
Vol 7 (5) ◽  
pp. 18008-18008 ◽  
Author(s):  
Shuo Liu ◽  
Tie Jun Cui ◽  
Ahsan Noor ◽  
Zui Tao ◽  
Hao Chi Zhang ◽  
...  
Keyword(s):  
Surface Wave ◽  
Electromagnetic Waves ◽  
Obliquely Incident ◽  
Negative Surface ◽  
Wave Conversion

The diffraction of an obliquely incident surface wave by a vertical barrier of finite depth

1966 ◽  
Vol 62 (4) ◽  
pp. 829-838 ◽  
Author(s):  
T. R. Faulkner
Keyword(s):  
Surface Wave ◽  
Surface Waves ◽  
Deep Sea ◽  
Small Amplitude ◽  
Fluid Motion ◽  
Three Dimensional ◽  
Finite Depth ◽  
Two Dimensional ◽  
Obliquely Incident ◽  
Vertical Barrier

The effect of a vertical barrier, fixed in an infinitely deep sea, on normally incident surface waves of small amplitude was first considered by Ursell (1) and generalizations which retain the two-dimensional aspects of the problem have subsequently been considered by John (2) and Lewin (3). The fluid motion due to the flexural vibrations of a barrier of finite depth has been considered by Alblas (4), the motion in this case being three-dimensional.

Exit-surface wave reconstruction using a focal series

1992 ◽  
Vol 50 (2) ◽  
pp. 988-989
Author(s):  
W.J. de Ruijter ◽  
M.R. McCartney ◽  
David J. Smith ◽  
J.K. Weiss
Keyword(s):  
Surface Wave ◽  
Spherical Aberration ◽  
Data Extraction ◽  
High Sensitivity ◽  
Geometric Distortion ◽  
Variation Method ◽  
Objective Lens ◽  
Immediate Reconstruction ◽  
Exit Surface ◽  
Electron Microscopes

Further advances in resolution enhancement of transmission electron microscopes can be expected from digital processing of image data recorded with slow-scan CCD cameras. Image recording with these new cameras is essential because of their high sensitivity, extreme linearity and negligible geometric distortion. Furthermore, digital image acquisition allows for on-line processing which yields virtually immediate reconstruction results. At present, the most promising techniques for exit-surface wave reconstruction are electron holography and the recently proposed focal variation method. The latter method is based on image processing applied to a series of images recorded at equally spaced defocus.Exit-surface wave reconstruction using the focal variation method as proposed by Van Dyck and Op de Beeck proceeds in two stages. First, the complex image wave is retrieved by data extraction from a parabola situated in three-dimensional Fourier space. Then the objective lens spherical aberration, astigmatism and defocus are corrected by simply dividing the image wave by the wave aberration function calculated with the appropriate objective lens aberration coefficients which yields the exit-surface wave.

Sign in / Sign up

Export Citation Format

Share Document