Abstract: A system comprising: a high index dielectric configured to: a) create a bi-periodic interference pattern of two standing sinusoidal waves on illumination by two pairs of counter-propagating sinusoidal light beams at different incident angles, wherein the incident angles are selected in accordance with the index of refraction of the high index dielectric to i) to 5 determine the spatial frequency of each counter-propagating light beam pair, and ii) cause total internal reflection, and b) generate, from the bi-periodic interference pattern, an evanescent bi-periodic standing sinusoidal wave; a light source configured to illuminate the high index dielectric with the two pairs of counter-propagating sinusoidal light beams at the different incident angles and thereby illuminate a fluorescing object positioned at the surface of the high index dielectric with the generated evanescent bi-periodic standing sinusoidal wave; and one or more delay lines configured to independently modify the initial phase of each counter

Abstract: A system comprising: a dielectric configured to: a) create a bi-periodic interference pattern of two standing sinusoidal waves on illumination by two pairs of counter-propagating light beams at different incident angles, wherein the incident angles are selected in accordance with the index of refraction of the dielectric to i) to determine the spatial frequency of each counter-propagating light wave pair, and ii) cause total internal reflection, and b) generate, from the bi-periodic interference pattern, an evanescent bi-periodic standing sinusoidal wave; a light source configured to illuminate the dielectric with the two pairs of counter-propagating sinusoidal light waves at the selected incident angles and thereby illuminate a fluorescing object positioned at the surface of the dielectric with the generated bi-periodic evanescent standing sinusoidal wave; and one or more delay lines configured to independently modify the initial phase of each counter-propagating light wave pair.

Abstract: A multipurpose apparatus that enables extracting juice and crushing objects of variable sizes. The apparatus comprises a base, an approximation mechanism, an upper member, a lower holder member and a support assembly. The upper member and the lower holder member are movably connected to one another through the approximation mechanism, which comprises at least one handle, where the upper member and the lower holder member are movably disposed on the support assembly. A manual lowering of the handle enables the approximation mechanism to approximate the lower holder member to the upper member by simultaneously lifting of the lower holder member towards the upper member and lowering the upper member towards the lower holder member.