We are used to cameras with multi-megapixel resolution, however such imaging capabilities are not available in all frequency ranges. Each pixel represents a detector, and as we go to longer wavelengths, such as infrared or terahertz, detectors are becoming harder to make and larger arrays become expensive and impractical. This is where computational imaging has an edge, and by using a single detector and a spatial light modulator one can reconstruct images with remarkable speed. The authors of this work have demonstrated how to utilize a tunable graphene metamaterial modulator and a single detector for creating long-wave infrared images of objects. Using CMOS-compatible technology, they fabricated a spatial light modulator containing 64 pixels with a total image acquisition time of 4 seconds, which is 64 times faster than a raster scan with a comparable signal-to-noise ratio. This technology is scalable to larger arrays and can be further improved for faster image acquisition. 

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