
N. Hanacek/NIST
When an ordinary beam of neutrons strikes the team’s silicon grating, the millions of scored lines on the grating convert the neutrons into an Airy beam with a wavefront that travels along a parabolic path. The triangular shapes on the detector match the predicted behavior of an Airy beam, offering evidence of the team’s success.
In a physics first, a team including scientists from the National Institute of Standards and Technology (NIST) has created a way to make beams of neutrons travel in curves. These Airy beams (named for English scientist George Airy), which the team created using a custom-built device, could enhance neutrons’ ability to reveal useful information about materials ranging from pharmaceuticals to perfumes to pesticides—in part because the beams can bend around obstacles.
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This achievement could enhance neutron-based techniques for investigating the properties of materials that are difficult to explore by other means. For example, the beams can probe characteristics of molecules such as chirality, which is important in biotechnology, chemical manufacturing, quantum computing, and other fields.
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