TY - JOUR
T1 - Force spectrum of a few chains grafted on an AFM tip
T2 - Comparison of the experiment to a self-consistent mean field theory simulation
AU - Wang, Tao
AU - Xu, Jiajing
AU - Qiu, Feng
AU - Zhang, Hongdong
AU - Yang, Yuliang
PY - 2007/9/21
Y1 - 2007/9/21
N2 - A simulation model based on self-consistent mean field theory (SCMFT) has been developed to inspect the approaching process of the polymer chain grafted AFM tip to a substrate. The effects of various controlling parameters, such as grafting position, chain number, chain length, as well as solvent- and substrate-chain interactions, on the force curve were investigated. Real force spectroscopy of AFM tips modified by poly(ethylene glycol) (PEG) chains interacting with the fresh mica has been recorded, and several typical types of the force curves that correspond to the different states of the grafting chain were assorted. The simulations fit the experimental results well, providing a strong support to the model.
AB - A simulation model based on self-consistent mean field theory (SCMFT) has been developed to inspect the approaching process of the polymer chain grafted AFM tip to a substrate. The effects of various controlling parameters, such as grafting position, chain number, chain length, as well as solvent- and substrate-chain interactions, on the force curve were investigated. Real force spectroscopy of AFM tips modified by poly(ethylene glycol) (PEG) chains interacting with the fresh mica has been recorded, and several typical types of the force curves that correspond to the different states of the grafting chain were assorted. The simulations fit the experimental results well, providing a strong support to the model.
KW - Atomic force microscopy
KW - Force curve
KW - Self-consistent mean field theory
UR - https://www.scopus.com/pages/publications/34548511554
U2 - 10.1016/j.polymer.2007.07.066
DO - 10.1016/j.polymer.2007.07.066
M3 - Article
AN - SCOPUS:34548511554
SN - 0032-3861
VL - 48
SP - 6170
EP - 6179
JO - Polymer
JF - Polymer
IS - 20
ER -