The Nanoscale World

Tip radius Quantification and "Tip Image Size" on Deep indents

rated by 0 users
Not Answered This post has 0 verified answers | 2 Replies | 2 Followers

Top 100 Contributor
10 Posts
Points 116
meaton212 posted on Tue, Dec 6 2016 7:20 AM

Hello,

 

I use AFM on very viscoelastic rubbery materials. This results in very deep indentations (100-200nm). My question is, is the tip radius check using the roughness sample acurrate to these indentations? I also realize that the parameter "tip image size" when altered can also change the value of the tip radius estimation that it gives you. What is the meaning of this parameter, and How do you optimize it?

 

https

 

Thanks

  • | Post Points: 10

All Replies

Top 100 Contributor
10 Posts
Points 116

Messed up the link to the image... sorry

 

Link to Image

  • | Post Points: 12
Top 10 Contributor
62 Posts
Points 660

With such a large indentation depth, the Sneddon Model would be more accurate. In the Sneddon model, the half angle of the tip and the indentation depth are critical. 

  • | Post Points: 10
Page 1 of 1 (3 items) | RSS
Copyright (c) 2011 Bruker Instruments