I dont have question i only say thanks a lot Dear Prof Dr. ( Emil Roduner).
Relay I understand (why nanomaterials are different) thanks a lot for your paper thanks for you
I think this is more important to understand the nano size
DOI: 10.1039/b502142c
HI there,
The main reasons why nanomaterials show properties so different from those of the bulk are: Surface effects: atoms at surfaces have fewer neighbours than atoms in the bulk. Because of this lower coordination and unsatisfied bonds, surface atoms are less stabilised than bulk atoms. For nanomaterials, not only their chemical composition, but also their morphological properties and surface properties determine their characteristics. These properties do not only differ in comparison to the corresponding bulk material but also between different nanoforms of the same substance. To more information see following link: https://chemistry.stackexchange.com/questions/61377/why-do-nanoparticles-have-a-different-color-than-their-macro-counterparts
Regards,
HI there,
The main reasons why nanomaterials show properties so different from those of the bulk are: Surface effects: atoms at surfaces have fewer neighbours than atoms in the bulk. Because of this lower coordination and unsatisfied bonds, surface atoms are less stabilised than bulk atoms. For nanomaterials, not only their chemical composition, but also their morphological properties and surface properties determine their characteristics. These properties do not only differ in comparison to the corresponding bulk material but also between different nanoforms of the same substance. To more information see following link: https://chemistry.stackexchange.com/questions/61377/why-do-nanoparticles-have-a-different-color-than-their-macro-counterparts
Regards,
From my point of view the major question actually is: What are nanomaterials? Since many materials are called nano but they are in the scale of micrometers already, this question is possibly really important. Nearly 10 years ago I had this discussion ,already and the possibly best answer was: Nanomaterials are actually not linked automatically to a nanometer size (although so it started). The major criterion to call something nano is that the properties of the respecting material changes conciderably. This can be for some phases in the scale of microns, but for other it really has to be a few nanometers only. If this is a reasonable definition, the upper question is no question but a definition.
thanks alot Dear Gert Nolze
Thanks for in formation .yes you are correct but I said :I dont have question this is mean this is not question I put here may be useful for some one thanks a lot for every things
Regards
Sorry...my misinterpretation... I've mainly saw the question: Why nanomaterials are different? And I only want point out: Because they are nanomaterials! or in other words: this is possibly the definition of nanomaterials and does not automatically mean nano sized.
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