3,434 research outputs found
Broadband negative refraction in stacked fishnet metamaterial
We demonstrate a scheme to utilize the stacked fishnet metamaterial for
all-angle negative refraction and subwavelength imaging within a wide frequency
range starting from zero frequency. The theoretical predictions are verified by
the finite-difference-in-time-domain (FDTD) numerical simulations. The
phenomena come from the negative evanescent coupling between the adjacent slab
waveguides through the breathing air holes perforated on metal layers.Comment: 8 pages, 4 figure
A Survey of Developable Surfaces: From Shape Modeling to Manufacturing
Developable surfaces are commonly observed in various applications such as
architecture, product design, manufacturing, and mechanical materials, as well
as in the development of tangible interaction and deformable robots, with the
characteristics of easy-to-product, low-cost, transport-friendly, and
deformable. Transforming shapes into developable surfaces is a complex and
comprehensive task, which forms a variety of methods of segmentation,
unfolding, and manufacturing for shapes with different geometry and topology,
resulting in the complexity of developable surfaces. In this paper, we reviewed
relevant methods and techniques for the study of developable surfaces,
characterize them with our proposed pipeline, and categorize them based on
digital modeling, physical modeling, interaction, and application. Through the
analysis to the relevant literature, we also discussed some of the research
challenges and future research opportunities.Comment: 20 pages, 24 figures, Author submitted manuscrip
- …