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Nanotechnology Now - Press Release: New method addresses problem with perovskite solar cells: NREL researchers provide growth approach that boosts efficiency, stability

Nanotechnology Now - Press Release: New method addresses problem with perovskite solar cells: NREL researchers provide growth approach that boosts efficiency, stability
nanotech-now.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from nanotech-now.com Daily Mail and Mail on Sunday newspapers.

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Nanotechnology Now - Press Release: Bringing Atoms to a Standstill: NIST Miniaturizes Laser Cooling January


Nanotechnology Now
Home > Press > Bringing Atoms to a Standstill: NIST Miniaturizes Laser Cooling January
Credit: NIST
Illustration of a new optical system to miniaturize the laser cooling of atoms, a key step towards cooling atoms on a microchip. A beam of laser light is launched from a photonic integrated circuit (PIC), aided by an element called an extreme mode converter (EMC) that greatly expands the beam. The beam then strikes a carefully engineered, ultrathin film known as a metasurface (MS), which is studded with tiny pillars that further expand and shape the beam. The beam is diffracted from a grating chip to form multiple overlapping laser beams inside a vacuum chamber. The combination of laser beams and a magnetic field efficiently cools and traps a large collection of gaseous atoms in a magneto-optical trap (MOT). ....

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