Researchers at Purdue University have developed a groundbreaking imaging device called the “Nonlocal-Cam,” which leverages novel optical materials and computational imaging to capture previously inaccessible spectral and polarization information. Unlike conventional RGB cameras, this device uses nonlocal dispersion of optical activity—where light’s refractive index varies with momentum—to separate colors in the polarization domain. Built with cost-effective α-quartz crystals, the Nonlocal-Cam achieves high spectral resolution with minimal hardware, making it suitable for applications in machine vision, environmental monitoring, and advanced microscopy. Its universal design enables functionality across the spectrum from ultraviolet to infrared, providing a versatile and scalable solution for imaging technologies.
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