Please see the attached image. Can anyone tell me how wall density can be calculate? Simple "ImageJ" can be use for that, after choosing the area and one can count manually. Is it the only way? I think this result will have a lot of error. Is there any another way to count wall density? Thanks in advance.
Question is confusing.. you want to measure spatial density i. e. number of carbon nano-walls in unit area OR do you want to measure number of layers in each carbon nanowall?
If its the former, then ImageJ method which you mentioned is good enough, yes there will be error, but do it in multiple regions and report average number.. if its the later, then you need TEM image.
Thank you for your response. I'm talking about spatial density i.e. number of walls or verticle sheets per unit area.Here, I'm not interested in number of layers in each sheet.
I'm interesting on how you made these vertically aligned carbon walls. I have assembled graphene oxide nanosheet into a hollow ball and count the line density of the walls by using ImageJ. I think it can make it.
Thank you all.
Dear Haijun,
Thank you for your interest. This kind of sample are used to prepare by PECVD or HFCVD, using hydrocarbon gas, Ar and H2 depends on your chamber geometry. You can go through nice review article by Bo et al to get more information.
Plasma-enhanced chemical vapor deposition synthesis of vertically oriented graphene nanosheets Nanoscale, 2013, 5, 5180 : DOI: 10.1039/c3nr33449j
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