Tailoring the Generalized 2D Airy Beam

Generalized two-dimensional (2D) Airy beam is a kind of self-accelerating beam with variable initial angle between its two wings, manifested itself as an initial angle determined parabolic trajectory during the free-space All-in-One Commodes propagation.However, the independent and flexible manipulation of both the transverse optical field and long

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WOOD COLOR CHANGES BY AMMONIA FUMING

This paper studies the influence of ammonia gas on wood color changes in response to an increasing demand for dark colored wood specimens.The darker wood color in ammonia fuming Shirts is accomplished through chemical reactions between ammonia gas and wood compounds.We exposed oak, maple, spruce, and larch wood samples to ammonia gas for 16 days.Du

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