Daily Archives: July 26, 2016

Metalenses at visible wavelengths: Diffraction-limited focusing and subwavelength resolution imaging | Science

Specially designed two-dimensional (2D) arrays of nanometer-scale metallic antennas, or metasurfaces, may allow bulky optical components to be shrunk down to a planar device structure. Khorasaninejad et al. show that arrays of nanoscale fins of TiO can function as high-end … Continue reading

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Snapchat frees sex abuse survivors to talk – BBC News

Indian sexual abuse survivors have been able to speak candidly, without fear of identification, thanks to Snapchat’s face-mapping filters. Source: Snapchat frees sex abuse survivors to talk – BBC News

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