Gravitational waves from inflation generate a faint but distinctive twisting pattern in the polarization of the cosmic microwave background, known as a "curl" or B-mode pattern. For the density ...

Fig. 1. (a) THz optical path diagram based on metasurface. By controlling the phase delays of LCP and RCP waves by unit cells, metasurface can transmit the LCP and RCP components of the incident ...

A new publication from Opto-Electronic Advances; DOI 10.29026/oes.2022.210014 overviews terahertz metasurface zone plates with arbitrary polarizations to a fixed polarization conversion. As an ...

A Chinese research team has developed a novel terahertz wave polarization modulator that can be used in multiple fields such as high-speed wireless communication, the Chinese Academy of Sciences' ...

A detailed analysis of microwave polarization from the Big Bang's aftermath has thrown what's likely to be the final splash of cold water on last year's claims that gravitational waves were detected ...

Forbes contributors publish independent expert analyses and insights. The Universe is out there, waiting for you to discover it. It's been less than two years since the LIGO collaboration detected ...

Sliding ferroelectrics are a type of two-dimensional (2D) material realized by stacking nonpolar monolayers (atom-thick layers that lack an electric dipole). When these individual layers are stacked, ...

Terahertz (THz) waves, which are located between microwaves and infrared light in the electromagnetic spectrum, can pass through many materials without causing damage, making them useful for security ...