Scientists create ’repulsive’ material

Tokyo, December 31: Japanese scientists have developed a new material whose properties are domited by electrostatic repulsion – the same force that makes our hair stand on end when we touch a van generator – rather than attractive interaction. Up to now, man–made materials have not taken advantage of this phenomenon, but ture has. Cartilage owes its ability to allow virtually frictionless mechanical motion within joints, even under high compression, to the electrostatic forces inside it.

“Materials of this kind could be used in the future in various areas from regenerative medicine to precise machine engineering, by allowing the creation of artificial cartilage, anti–vibration materials and other materials that require resistance to deformation in one plane,” said Yasuhiro Ishida from the RIKEN Center for Emergent Matter Science in Japan.

The team found that when titate no–sheets are suspended in an aqueous colloidal dispersion, they align themselves face–to–face in a plane when subjected to a strong magnetic field. The field maximises the electrostatic repulsion between them and entices them into a quasi–crystalline structure, turally orienting themselves face to face, separated by the electrostatic forces between them.

Along with colleagues from the tiol Institute of Material Science and the University of Tokyo, the team created the new material. (IANS)