2013/02/13 > eTech France 277 > 200 Atoms for a Nano-motor with Controlled Clockwise and Counterclockwise Rotation !

Coordonnées >>

Toute l'actualité :

France >>

Monde >>

Tous les rapports :

France >>

Monde >>

Tous les flux rss >>

eTech France 277 >> 13/02/2013

>> Sommaire

Live from the Lab
200 Atoms for a Nano-motor with Controlled Clockwise and Counterclockwise Rotation !

http://www.bulletins-electroniques.com/actualites/72216.htm

Imagine a three-part nanometric motor. It is adsorbed on a gold surface by the stator. A ruthenium atom, acting as a ball bearing, on the tip of the stator is connected to a five-arm 2-nanometer diameter molecular rotor. One arm of the rotor has been deliberately shortened to follow rotor rotation direction. A mere 200 atoms make up the molecular motor whose design and synthesis required no fewer than 15 stages and took CEMES researchers working with their US counterparts at the University of Ohio nearly ten years to engineer.

Three connection points anchor the 'molecular motor' onto a surface. The upper plate turns clockwise or counterclockwise around its axis, depending on the position of the microscope point.
Crédits : G. Rapenne et G. Vives, CEMES, CNRS/UPS

Step-by-step, the researchers managed to trigger rotor movement and control rotational direction by placing the molecular device on a gold surface and subjecting it to a temperature of - 268.5°C, i.e. 4.6°C from absolute zero. To do so, electrons were delivered with the point of a tunneling microscope, serving as an observation instrument and energy source. The research, which foreshadows the components of future nanometric robots, was published in the January issue of Nature Nanotechnologies. The researchers' next step will be to measure the power delivered by the nano-motor by having it interact with the smallest solid gears that can be made today.

>> Suivant

<< Précédent

Partager cette page :

Tweet

Partager

Version imprimable >>

Transmettre cette info par email >>

Recommander ce site à un collègue / ami >>

S'abonner au
eTech France >>

FAQ / foire aux questions >>

Conditions d'utilisation >>

Pour en savoir plus, contacts :

- Centre d'Elaboration de Matériaux et d'Etudes Structurales (CEMES, Centre for Materials Processing and Structural Studies)
* Christian Joachim- Phone: 33 (0)5 62 25 78 35 email : joachim@cemes.fr
* Gwénaël Rapenne - Phone: +33 (0)5 62 25 78 41 email : rapenne@cemes.fr

Code brève
ADIT : 72216

Sources :

- Controlled clockwise and anticlockwise rotational switching of a molecular motor
- U. G. E. Perera, F. Ample, H. Kersell, Y. Zhang, G. Vives, J. Echeverria, M. Grisolia, G. Rapenne, C. Joachim and S.-W. Hla - Nature Nanotechnology, 2013, 8, 46-51.

Rédacteurs :

ADIT - Jean-François Desessard - email : jfd@adit.fr

Origine :

eTech France numéro 277 (13/02/2013) - ADIT / ADIT - http://www.bulletins-electroniques.com/actualites/72216.htm

[ Plan du site | Données personnelles & politique de confidentialité | Limites de responsabilité | FAQ | Contacts ]

4444444006 999920130214 3333333061 1010101014 1010101017 1111111049 55555550022013 6666666063 7777777001