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A perfect absorbing layer from inside-out invisibility cloak for high-order simulations of scatterin
2018-05-30 00:00:00

报告题目:

A perfect absorbing layer from inside-out invisibility cloak for high-order simulations of scattering problems

报 告 人:

王立联 教授(新加坡南洋理工大学)

报告时间:

2018年06月01日 15:50--16:40

报告地点:

理学院东北楼四楼办公厅(404)

报告摘要:

In this talk, we introduce a perfect absorbing layer related to the design of the inside-out (or inverse) invisibility cloak, which is well-suited for high-order simulation of wave scattering problems with bounded scatterers. The notion of an inside-out cloak is to hide objects in an open space by rendering the observers inside a closed region unaware of the objects outside. In principle, this can be achieved by compressing the waves in the open space to a finite layer surrounding the closed region. If the cloak is perfect, it can be the best candidate of an absorbing non-reflective layer for wave scattering problems, especially, when one uses high-order methods. However, the ideal inverse cloak is far from perfect, so the purpose of this talk is to present ideas and techniques to make it perfect. We also report efficient high-order methods on accurate simulations of scattering problems arisen from transformation optics.