Nanogallery
Nanogallery
TODAY AUGUST 23, 2017

Quantum phenomena at the nanoscale

"The more precisely the POSITION is determined, the less precisely the MOMENTUM is known"

Schrödinger Cat: At once dead and alive!
Schrödinger Cat: At once dead and alive! "Schrödinger cat" is a quantum paradox suggested by Schrödinger in 1935. Its purpose is to illustrate a highly counterintuitive nature of the quantum theory.

The quantum theory, or quantum mechanics, was created by Werner Heisenberg who received Nobel Prize in 1932 for this achievement. This theory describes the behavior of objects at the atomic scale, with unsurpassed precision. The question of applicability of quantum mechanics to macroscopic objects remains a subject of debate and some controversy, as is illustrated by the "Schrödinger cat" thought experiment.
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Excitons condense and form macroscopic patterns
Excitons condense and form macroscopic patterns Negatively charged electron and positively charged holes, existing in a semiconductor, attract each other and can form bound particles or “electron-hole” atoms, know as excitons. Recent experiments by "Leonid Butov (UCSD)" and his collaborators suggest that these particles can condense into a single quantum state and form a superfluid. This is similar to superfluidity of He atoms which can also form a condensate.
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Multiwall carbon nanotube SET transistor
Multiwall carbon nanotube SET transistor The figure shows two example of a recent low-temperature transport experiments with multiwall nanotubes. This amazing "face"-type images represent gray-scale maps of the nanotube electrical conductance, measured with respect to two variables: magnetic field (horizontal axis), applied parallel to the tube, and the bias voltage (vertical axis).
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Quantum electronic orbits discovered around carbon nanotubes
Quantum electronic orbits discovered around carbon nanotubes Formation of tubular electronic states around carbon nanotubes is demonstrated in recent experiments by M. Zamkov and collaborators.
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Search for DNA electrical conductance
Search for DNA electrical conductance DNA insert into a nanodevice acts as a semiconductor.
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The cylindrical superstructures are composed of silver nanoparticles with V-shaped amphiphilic arms. The short rod-like and spherical assemblies are made of gold nanoparticles with the same V-shaped amphiphilic arms.  The self-assembly occurs upon slow addition of water to solution of nanoparticles in organic solvent called tetrahydrofuran. The resulting mixture is then dialyzed against pure water in order to remove organic solvent and obtain a pure aqueous solution of the superstructures (they remain in water without any precipitation, just like micelles).
Nanowerk Nanotechnology Portal
http://www.nanowerk.com

Nanohedron
http://www.nanohedron.com

Biomolecules
http://perso.curie.fr/Simon.Sc..


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