Is it the aspect ratio (Diameter/Length), if yes then what is the range of value of Aspect ratio that defines nanowires and nanorods?
I spent a lot of time on literature about silicon nanorods/wires and there is no clear definition. In my opinion, an aspect ratio below 10 corresponds to nanorods, while an AR above 10 corresponds to a nanowire. The value could also be higher or lower and everyone uses the terms in a different way. I found a nice solution to this problem in a recent review about radial junction nanowire solar cells, that just calls these structures "elongated nanostructures". Makes it much easier. ;)
i think, nano wire cannot grow more than a few nanometers in height such as:
Metal nanowires ,Semiconductor nanowires (Silicon nanowires) , Oxide nanowires, and Multi segment nanowires but
nanorod grow more than a few micrometers in height
hi jitender,
http://www.engr.colostate.edu/ECE581/fall07/Nanowires%20and%20Nanorods.pdf
hope it may helpfull
regards
You are correct in that it mostly is aspect ratio. There is no true hard definition; which is what it seems that you are looking for. I generally follow that nanowires have an aspect ratio sufficiently large that they have some physical flexibility. I would hazard that a good rule of thumb is that aspect ratio is a little more than 10, or the length at least is approaching the micron scale.
However, much of this is just semantics..if you are in doubt, you can be fairly safe describing your 1-D material as "large aspect ratio nanorods" :)
I spent a lot of time on literature about silicon nanorods/wires and there is no clear definition. In my opinion, an aspect ratio below 10 corresponds to nanorods, while an AR above 10 corresponds to a nanowire. The value could also be higher or lower and everyone uses the terms in a different way. I found a nice solution to this problem in a recent review about radial junction nanowire solar cells, that just calls these structures "elongated nanostructures". Makes it much easier. ;)
check this please
http://www.quora.com/How-can-we-differentiate-between-nanotubes-nanorods-nanowires-and-nanoparticles :How can we differentiate between nanotubes, nanorods, nanowires, and nanoparticles?
Dear Dr. Jitender
Have a nice day
Nanomaterials like the nanowires or nanorods have dimensions within the nanometer range. They are called one- dimensional nanostructures materials. The difference between them and their naming are attributed to the relative ratio between their diameters to their lengths. This ratio is larger in case of nanorods. Generally, they can be defined as follows:
Nanowires are one dimensional nanostructures which have diameters of the order of tens of nanometers, with unconstrained length scales. The ratio between their diameters to their lengths may be less than 10-3. While for the nanorods, that ratio here is almost ranged between 0.1 and 0.3 only, as well as they are also one dimensional nanostructural materials.
Good luck
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