نتایج جستجو برای: microwave acoustics
تعداد نتایج: 60559 فیلتر نتایج به سال:
We describe two experiments demonstrating that a cylindrical cloak formerly introduced for linear surface liquid waves works equally well for sound and electromagnetic waves. This structured cloak behaves like an acoustic cloak with an effective anisotropic density and an electromagnetic cloak with an effective anisotropic permittivity, respectively. Measured forward scattering for pressure and...
We propose a device that can take an arbitrary monochromatic input beam and, automatically and without any calculations, couple it into a single-mode guide or beam. Simple feedback loops from detectors to modulator elements allow the device to adapt to any specific input beam form. Potential applications include automatic compensation for misalignment and defocusing of an input beam, coupling o...
Topological acoustics is an emerging field that lies at the intersection of condensed matter physics, mechanical structural design and engineering. It explores construction novel artificial structures, such as acoustic metamaterials phononic crystals, to manipulate sound waves robustly, taking advantage topological protection. Early work on was limited duplicating phases have been understood in...
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