Simultaneous packing structures in superionic water may explain ice giant magnetic fields

Superionic water—the hot, black and strangely conductive form of ice that exists in the center of distant planets—was ...
IEEE

Applicability of Physical Optics for Predicting the Diffraction Pattern of Binary Metasurfaces

Abstract: In this paper, we outline the domain of adequacy for the well-known approximation of physical optics (PO) for binary metasurfaces (MSs). First, we show that beyond the approximation of ...
IEEE

Reflective Metagratings with Reconfigurable Array Period for Controlling Diffraction Patterns

Abstract: The concept of metagratings has been proposed as an efficient method of controlling the diffraction field of electromagnetic waves. In this paper, a reflective metagrating with ...
AOL

Silicon and carbon in iron may explain the onion-like layering of Earth’s inner core

Earth’s inner core has long puzzled scientists because seismic waves move through it unevenly. Compressional waves from earthquakes travel about 3 to 4 percent faster along the planet’s rotation axis ...
earth

Earth’s inner core may be layered like an onion

Deep inside Earth, researchers see signs that the solid inner core may be arranged in multiple chemical layers far below. High-pressure experiments on iron alloys, squeezed at Germany’s PETRA III ...