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It is well known that photons carrying momentum ħk exert a positive pressure on an object in vacuum. However, whether photons push or pull an object immersed inside a dielectric medium is not so straightforward due to the century-old debate associated with the definition of photon momentum inside dielectrics [1-2]. This question becomes even more puzzling with the advent of metamaterials, which can...
Electromagnetic wave induced forces have been extensively studied for decades. It has been well known that for an electromagnetic wave propagating in vacuum the photons carrying momentum exert a positive photon pressure on an object. However, a metamaterial can have a negative effective refractive index, in which case the wave vector is directed towards the source of radiation. In such a medium, should...
Electromagnetic wave or light-induced forces have been extensively studied for decades. It has been well known that for an electromagnetic wave propagating in vacuum the photons carrying momentum ħk exert a positive photon pressure on an object. However, in a metamaterial with a negative refractive index, the wave vector k is directed towards the source of radiation. In this case, should electromagnetic...
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