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physics

Turning infrared into visible light

Every light wave is characterized by its frequency and the human eye can detect frequencies between 400 and 750 trillion Hz (or terahertz, THz), which define the visible spectrum. Cell phone camera light sensors detect frequencies down to…

Graphene nanoribbon defects

Graphene nanoribbons (GNRs) feature interesting physical, electrical, thermal, and optical properties because of the interplay between their crystal and electronic structures. These characteristics have pushed them to the forefront in the…