New Propulsion Method Developed for Metallic Micro And Nano-Objects

Nanotechnology, compared to an uncommonly blue match

A new propulsion method for metallic micro- and nano-objects has been developed by researchers from the Institute of Molecular Sciences

The process is based on the novel concept of bipolar electrochemistry: under the influence of an electric field, one end of a metallic object grows while the other end dissolves.

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Unusual Electrons Go With the Flow

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This view provides a look into the heart of a scanning tunneling microscope in the specially designed Princeton Nanoscale Microscopy Laboratory, where highly accurate measurements at the atomic scale are possible because sounds and vibrations, through a multitude of technologies, are kept to a minimum.

On a quest to discover new states of matter, a team of Princeton University scientists has found that electrons on the surface of specific materials act like miniature superheroes, relentlessly dodging the cliff-like obstacles of imperfect microsurfaces, sometimes moving straight through barriers.

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Electrons on the Brink: Fractal Patterns May Be Key to Semiconductor Magnetism

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On the brink of the metal-insulator transition, the electrons in a manganese-doped gallium arsenide semiconductor are distributed across the surface of the material in complex, fractal-like patterns.

Just as the heartbeats of today’s electronic devices depend on the ability to switch the flow of electricity in semiconductors on and off with lightning speed, the viability of the “spintronic” devices of the future — technologies that manipulate both the flow and magnetic “spin” of electrons — will require similarly precise control over semiconductor magnetism.

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Diamonds Become Stronger When Squeezed Rapidly Under Extreme Conditions

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Time-integrated photograph of an OMEGA laser shot (43633) to measure high-pressure diamond strength.

Most people know that diamond is one of the hardest solids on Earth, so strong that it can easily cut through glass and steel.

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New on-Off ‘Switch’ Triggers and Reverses Paralysis in Animals With a Beam of Light

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This tiny worm became temporarily paralyzed when scientists fed it a light-sensitive material, or “photoswitch,” and then exposed it to ultraviolet light.

In an advance with overtones of Star Trek phasers and other sci-fi ray guns, scientists in Canada are reporting development of an internal on-off “switch” that paralyzes animals when exposed to a beam of ultraviolet light. The animals stay paralyzed even when the light is turned off. When exposed to ordinary light, the animals become unparalyzed and wake up.

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Exotic Electric Properties of Graphene Confirmed

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Graphene layers are found in graphite flakes like those from pencil lead.

First, it was the soccer-ball-shaped molecules dubbed buckyballs. Then it was the cylindrically shaped nanotubes. Now, the hottest new material in physics and nanotechnology is graphene: a remarkably flat molecule made of carbon atoms arranged in hexagonal rings much like molecular chicken wire.

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Light And Sound Vibrations Trapped Together In Nanocrystal For First Time

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Top: Scanning electron micrograph of the optomechanical crystal. Bottom: closer view of the device’s nanobeam.

Researchers at the California Institute of Technology (Caltech) have created a nanoscale crystal device that, for the first time, allows scientists to confine both light and sound vibrations in the same tiny space. Continue reading… “Light And Sound Vibrations Trapped Together In Nanocrystal For First Time”

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Mantis Shrimp Eyes Could Show Way To Better DVD And CD players

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A mantis shrimp takes a peep from it’s burrow in the Sulu sea.

The remarkable eyes of a marine crustacean could inspire the next generation of DVD and CD players, according to a new study from the University of Bristol published today in Nature Photonics.

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World’s Smallest Semiconductor Laser Heralds New Era In Optical Science

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The schematic on the left illustrates light being compressed and sustained in the 5 nanometer gap

Researchers at the University of California, Berkeley, have reached a new milestone in laser physics by creating the world’s smallest semiconductor laser, capable of generating visible light in a space smaller than a single protein molecule.

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Jewel Beetle Shimmer Could Offer Blueprint For Materials That Reflect Light

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Caption: The structure of jewel beetle cells results in striking colors as light hits them from angles.

“Jewel beetles” are widely known for their glossy external skeletons that appear to change colors as the angle of view changes. Now they may be known for something else–providing a blueprint for materials that reflect light rather than absorbing it to produce colors.

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Blackest Black Ever: Ultra-thin Material Absorbs Almost 100% Of Light

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How much light is reflected and how much is absorbed depends on two factors

It appears to be a paradox: ultra-thin material that absorbs all the incident light. Nonetheless, it does exist.

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