Nanomotor rotates microscale objects

Article Abstract:

A synthetic, light-driven molecular motor that is embedded in a liquid-crystal film and can rotate objects placed on the film that exceed the size of the motor molecule by a factor of 10,000 is designed. The changes in shape of the motor during the rotary steps cause a remarkable rotational reorganization of the liquid-crystal film and its surface relief, which ultimately causes the rotation of submillimetre-sized particles on the film.

Electronic components, not elsewhere classified, Other Electronic Component Manufacturing, Liquid Crystals, Usage, Properties, Motors, Films (Materials)

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Unidirectional molecular motor on a gold surface

Article Abstract:

A light-driven molecular motor, which is capable of repetitive unidirectional rotation, can be mounted on the surface of gold nanoparticles. The motor design uses a chiral helical alkene with an upper half that serves as a propeller and to a lower half that serves as a stator, which carries two thiol-functionalized 'legs' which then bind the entire motor molecule to a gold surface.

Analysis, Molecular rotation, Atomic properties

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Aptamers in nanoland

Article Abstract:

Juewen Liu and Yi Lu exploit the chameleon-like nature of gold nanoparticles to create a colorimetric indicator for the detection of specific biomolecules. Nanoparticles were first used as colour indicators to detect certain DNA sequences a decade ago and have since become an important tool in biodiagnostics.

United States, Science & research, Research, Nucleotide sequence, Base sequence

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