Ben-Gurion University of the Negev Research and Development Authority

Alina Karabchevsky

Joseph Gurwich

The invention relates to an on-chip optical waveguide comprising an input or output facet, the facet comprising an array of unit-cells; each unit cell is a recess that gradually narrows in the direction from the outer of the waveguide towards the interior of the waveguide.

Structure for a waveguide facet

The invention relates to an input or output facet for an on-chip optical waveguide, the facet comprising a grid of gradually expanding unit-cells such as cones or pyramids.

The invention relates to a method for creating a space of invisibility, which comprises: (a) providing a metamaterial plate having a subwavelength thickness, said metamaterial plate having bottom and top surfaces; (b) radiating the bottom surface of the metamaterial plate by a primary radiation thereby to form a space of invisibility above the top surface of the metamaterial plate, said space of invisibility being located within a space of a secondary radiation above the metamaterial plate which is in turn formed as a result of said primary radiation passing through metamaterial plate.

System and method for creating an invisible space

A method for detecting an analyte reactive towards luminol, comprising the steps of: feeding into a reaction chamber an alkaline solution of luminol, noble metal nanoparticles and at least one analyte reactive towards luminol, wherein the reaction chamber is in the form of a curved channel; detecting the light emitted due to a chemiluminescence reaction taking place in said channel; and discharging a reaction mass from said channel, characterized in that the average diameter of the metal nanoparticles is greater than 25 nm. Also provided is a microfluidic device for carrying out the method.

Method and device for chemiluminescence-based analysis

The invention provides a method of analyzing a liquid sample, comprising the steps of: passing near-infrared light through the sample, wherein the light travels in metal nanoparticles-added microfiber that is immersed in the sample; obtaining spectral information across a wavelength range of about 750 nm to about 1800 nm; and qualitatively identifying, and optionally quantitatively characterizing, one or more analytes in the sample. Near-infrared spectrophotometer carry out the method is also provided by the invention.

Growing community of inventors

Haifa, Israel

Alina Karabchevsky