An emerging toolkit is enabling the shaping of light for a wide variety of applications, in domains ranging from basic science to manufacturing to communications.
IMAGE OF THE WEEK
Potential bands of a five-element Halbach magnet array, made visible by a thin film of nano-magnetite particles inside a Ferrolens. A ring of 36 white LEDs faces inward; dark spots are magnetic poles (N and S). Light follows paths determined by magnetic fields.
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