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Optics and photonics is the study of the fundamental properties of light and harnessing them in practical applications. Optics and photonics covers the entire electromagnetic spectrum from high-energy gamma rays and X-rays, through the optical regime of ultraviolet, visible, and infrared light, to long-wavelength microwave and radio waves.
Photoresponsive perovskite light-emitting diodes can be used to build multifunctional displays that can function as touch screens, light sensors and image sensors.
A single monolayer semiconductor integrated into a plasmonic tunnel junction exhibits electroluminescence with photon energies that exceed the excitation electron potential. This phenomenon is shown to be indirectly triggered by inelastically tunnelling electrons.
A single light-emitting dye molecule precisely placed within the tiny gap of a metal nanodimer boosts light–matter coupling — a step closer to the development of quantum devices operating at room temperature.
Flat optics enable light manipulation at the subwavelength scale and provide a compact, wave-based, information processing and acquisition platform. Here, Wang et al. focus on the emerging interdisciplinary field of computational flat optic imaging applications and reveal their intrinsic connections.
The authors demonstrate ultrabroadband, polarisation-independent directional control of thermal radiation using a pixelated micro-emitter, and produce large emissivity contrast at different directions, with potential applications to radiative cooling, infrared spectroscopy and thermophotovoltaics.
Lee et al. developed ultrathin metallic (metal filling ratios of > 70 %) metamaterials that exhibit perfect transmission at a specific radar frequency. These characteristics enable microwave transparent, low-sheet-resistance radar heaters for safe autonomous driving in extreme weather.
We have introduced the concept of frequency downconversion temporal ghost imaging that enables to extend the operation regime of computational temporal ghost imaging to the mid-infrared.
The Sanya incoherent scatter radar (SYISR) system has now been augmented to become the world’s first phased-array tristatic ISR system, enabling it to sense volumes of the Earth’s ionosphere, explain the SYISR-TS leadership team.
Photoresponsive perovskite light-emitting diodes can be used to build multifunctional displays that can function as touch screens, light sensors and image sensors.
A single monolayer semiconductor integrated into a plasmonic tunnel junction exhibits electroluminescence with photon energies that exceed the excitation electron potential. This phenomenon is shown to be indirectly triggered by inelastically tunnelling electrons.
A single light-emitting dye molecule precisely placed within the tiny gap of a metal nanodimer boosts light–matter coupling — a step closer to the development of quantum devices operating at room temperature.