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Nanooptics

The Technion researchers sent laser bursts (pulses) to the edges of the model (the two-dimensional structure) that created the hybrid waves in the material. The researchers discovered that these waves travel at a speed almost 1,000 times slower than the speed of light in free air (and almost 1,000 times faster than the speed of sound in free air).

The audiovisual show

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The journal Science reports on an unprecedented experimental observation made by researchers at the Technion - real-time tracking of the movement of a combined light-sound wave moving through a material the thickness of individual atoms. The researchers were able to follow the movement of the wave from its formation to its final decay
The photonic big bang: weak disorder creates a weak nanometric separation between photons with opposite spin (red and blue) - "photonic spin-Hall effect". Only in complete disorder does the "photonic explosion" occur - photons with opposite spins split and fill the entire momentum space - the "photonic Rashba effect". The phenomenon describes a topological phase transition that manifests itself in symmetry breaking. The research was inspired by models in cosmology that describe the Big Bang. Silicon nanoantennas are depicted in the picture, and the transition from antennas ordered in their direction to complete disorder is expressed by measuring a sharp increase in entropy (as a measure of disorder). Source: Technion.

The "big bang" in nanooptics

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Section a silicon wafer at the nanometer level using a laser. Illustration: 223880533

Video cameras for nanoparticles / Ben Fogelson

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New fiber optic technology. Image: Penn State University

Technion researchers have developed a new device for transmitting light

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An optical nanoengine based on light rotation with the help of a circular chain of "bigla" nanoantennas (a) and nanorods in different directions along the chain (b) which allows for increasing the light rotation.

Technion researchers have created new optics

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Diagram (left) and scanning electron microscope images of nanolasers grown directly on a silicon surface

Preparation of nanolasers attached to silicon

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Illustration of the crystal lattice created by Sung Yong Park. Illustration: Adolf Lachman

A complex structure of gold particles, DNA and viruses

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Dr. Dan Oron. Color changer

The size (of the particles) does determine (their optical properties)

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Threading light into a nanometric hole in the shape of a "pretzel" and spiral grooves on the surface of a gold layer - an optical nanometer screw. On the right - screwing the light into the hole, on the left - electron microscope images of the nanometer optical screw.

The Technion researchers managed to "screw" light and inject it into a nanometer hole

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