Post by skytroll on Jul 18, 2008 0:45:56 GMT -5
How these nanofibers are formed:
mixes organic/natural with inorganic, sometimes the natural
wins, sometimes the synthetic wins.
www.icmab.csic.es/icmab/en/scientific_highlights/21
"Abstract:
The secondary structures of biological systems have a profound effects on their functions, and so too do the ones of synthetic organic materials, where the arrangement of the molecular units can lead to very different properties, such as electrical conductivity. Up to now, the arrangements of these manmade blocks in crystals have been influenced, but the situation in nanomaterials is emerging. Especially, the preparation of systems is required in which not only the preparation of individual components is important, but the creation of dissimilar building blocks with pathways for interacting and influencing upon each other in unique ways such that they can generate materials with distinctive characteristics. In this way, the synergy of the components could generate hybrid materials not only with unique organizations but also with new or improved properties.
The application of this hybrid approach to create new materials is an important contemporary challenge, and one which has often involved biological units as one component and inorganic nanoparticles as the other building block. The organic part is usually used to organize the inorganic particles because of the established specific non-covalent interactions taking place in naturally-occurring systems. Synthetic organic systems can also control the organization of gold nanoparticles. However, here we show that the reverse is also true: Gold nanoparticles can influence the organization of an entirely synthetic nanomaterial, provided the non-covalent “programming” of the particle coating is correct."
note the fiber ...forming....... in pictures;
Skytroll
mixes organic/natural with inorganic, sometimes the natural
wins, sometimes the synthetic wins.
www.icmab.csic.es/icmab/en/scientific_highlights/21
"Abstract:
The secondary structures of biological systems have a profound effects on their functions, and so too do the ones of synthetic organic materials, where the arrangement of the molecular units can lead to very different properties, such as electrical conductivity. Up to now, the arrangements of these manmade blocks in crystals have been influenced, but the situation in nanomaterials is emerging. Especially, the preparation of systems is required in which not only the preparation of individual components is important, but the creation of dissimilar building blocks with pathways for interacting and influencing upon each other in unique ways such that they can generate materials with distinctive characteristics. In this way, the synergy of the components could generate hybrid materials not only with unique organizations but also with new or improved properties.
The application of this hybrid approach to create new materials is an important contemporary challenge, and one which has often involved biological units as one component and inorganic nanoparticles as the other building block. The organic part is usually used to organize the inorganic particles because of the established specific non-covalent interactions taking place in naturally-occurring systems. Synthetic organic systems can also control the organization of gold nanoparticles. However, here we show that the reverse is also true: Gold nanoparticles can influence the organization of an entirely synthetic nanomaterial, provided the non-covalent “programming” of the particle coating is correct."
note the fiber ...forming....... in pictures;
Skytroll