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Magnetization dynamics and proximity effects in ultrasoft composition modulated amorphous CoAlZr alloy thin films
StructureThe three types of structures employed in this study are displayed in Fig. 1a. The single-layer (SL) films are Cox(Al0.7Zr0.3)1−x, each…
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High-performance achromatic flat lens by multiplexing meta-atoms on a stepwise phase dispersion compensation layer
PrincipleWe investigate the flat lens constructed by the meta-atoms on a SPDC layer with varying optical thickness, which satisfy the…
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Evangelina Rodríguez Led an Extraordinary Life as the Dominican Republic’s First Female Doctor
In the early 1890s Andrea Evangelina Rodríguez Perozo was just another poor girl trying to…
The Story Behind Indiana’s 1897 Vote to Change the Value of Pi
An ancient problem known as “squaring the circle” stumped mathematicians for more than 2,000 years.…
Observing formation and evolution of dislocation cells during plastic deformation
Metals and alloys are typically polycrystalline aggregates. When deformed plastically, dislocations are introduced into the…
Spatially dependent Raman gain by vortex beam in a four-level N-typed atomic system
Wang, J. et al. Terabit free-space data transmission employing orbital angular momentum multiplexing. Nat. Photonics…
Topological beaming of light: proof-of-concept experiment
TheoryThe leakage-radiation beam shaping here is schematically illustrated in Fig. 1a. A waveguide grating with…