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Nanophysics

Close-up of a zebrafish eye. A sophisticated and accurate vision system

A look at the fish's eye

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The scientists took advantage of the fact that chirality affects an electron property called "spin", which is characterized by two states - "spin up" and "spin down" - similar to the spinning of a spinning top clockwise or counterclockwise. Illustration: Prof. Ron Naaman, Weizmann Institute

Molecular spin in the laboratory

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Illustration of the energy dissipation process in graphene: an energetic electron (in red) is released from a local trap created by an atomic defect in the graphene structure, loses energy as a result (in blue) and slightly vibrates the structure (in orange). Source: Weizmann Institute magazine.

The flaws that heat up

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In the study, the scientists examined collisions that occur between the molecules. Collisions of atoms have been studied in the past, but atoms - according to classical physics - are spherical, while molecules have an elongated structure. The structure of a colliding body affects the way it will move after the collision. Will elongated molecules behave differently from spherical atoms? And is knowing their shape enough to predict the outcome of the collision? Illustration: pixabay.com.

Cold, getting cold

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Cold beam experiments. The shock waves block the flow of particles in the beam. Source: Weizmann Institute magazine.

Cold, frozen, warming: how to reduce shock waves in particle beam experiments

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A silver nanostructure in the shape of a "bow tie", with a quantum dot trapped in its center (red arrow). Photographed using an electron microscope

Nano bow ties

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