Abstract
In 1958, Roger Penrose proposed an interesting two-dimensional geometry (known as the Penrose unilluminable room) which always has dark regions unreachable by optical rays regardless of where a point light source is set within the cavity. In the present work, the dependency of resonance modes on the asymmetry of the cavity shape of the Penrose unilluminable room was investigated using numerical calculations based on the finite element method. It was found that there exist resonance modes which are extremely sensitive to the asymmetry of the cavity shape. The formation mechanism of these resonance modes can be explained by the modal interaction between two resonance modes confined in different cavity regions.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
