Compositional Mapping of Micropatterned, Mixed Self-Assembled Monolayers by Lateral Force Microscopy

Langmuir ◽  
1998 ◽  
Vol 14 (3) ◽  
pp. 660-666 ◽  
Author(s):  
Yuqing Zhou ◽  
Hongyou Fan ◽  
Tommy Fong ◽  
Gabriel P. Lopez
Keyword(s):  
Lateral Force ◽  
Self Assembled Monolayers ◽  
Lateral Force Microscopy ◽  
Force Microscopy ◽  
Assembled Monolayers ◽  
Self Assembled

scholarly journals Effect of Humidity and Hydrophobicity on the Tribological Properties of Self-Assembled Monolayers

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Yen-Chih Liao ◽  
William Hargrove ◽  
Brandon L. Weeks
Keyword(s):  
Tribological Properties ◽  
Lateral Force ◽  
Bulk Water ◽  
Self Assembled Monolayers ◽  
Lateral Force Microscopy ◽  
Force Microscopy ◽  
Gold Substrates ◽  
Assembled Monolayers ◽  
Force Signal ◽  
The Difference

The tribological properties of two distinctive alkanethiol SAMs, 16-mercaptohexadecanoic acid (MHA) and 1-octadecanethiol (ODT), on gold substrates in various humidity conditions were examined by lateral force microscopy (LFM). The results suggest that hydrophobic ODT SAM is insensitive to humidity. The difference of lateral force signal is within ±10% regardless of humidity. The lateral force signal of hydrophilic MHA SAMs has a significant decrease in signal in humid environments. The influence of bulk water was also investigated by LFM. By imaging under water, the capillary force is eliminated on ODT SAMs, which leads to a lower lateral force. However, the lateral force image was reversed on MHA SAMs, which suggested that hydrophobic forces dominated in water.

Preparation and Characterization of γ-Aminopropyltrimethoxysilane and Octadecyltrichlorosilane Self-Assembled Monolayers on Titanium Films

2008 ◽  
Vol 373-374 ◽  
pp. 472-475 ◽  
Author(s):  
C.G. Sun ◽  
Hui Chen Zhang
Keyword(s):  
Ultraviolet Radiation ◽  
Friction Force ◽  
Self Assembled Monolayers ◽  
Sliding Velocity ◽  
Friction Property ◽  
Titanium Film ◽  
Photochemical Process ◽  
Force Microscopy ◽  
Assembled Monolayers ◽  
Self Assembled

In this work, the self-assembled monolayers of γ-aminopropyltrimethoxysilane and octadecyltrichlorosilane were prepared on titanium films, radiated and solidified by ultraviolet radiation/ozone photochemical process. The characterization and friction properties of titanium film, APS SAMs, OTS SAMs and the radiated APS SAMs, OTS SAMs were explored by atomic force microscopy and friction force microscopy. The effects of functional groups, sliding velocity, load and ultraviolet radiation/ozone photochemical process on friction properties of SAMs were analyzed. The experimental results show that the titanium film coated with SAMs, especially under ultraviolet radiation/ozone, is exhibited with a good friction property. The friction property of APS SAMs is better than OTS SAMs under or no ultraviolet radiation/ozone. The friction force increases with the increasing of sliding velocity and decreases with the increasing of load.

Self-assembled monolayers of sulfonate-terminated alkanethiols investigated by frequency modulation atomic force microscopy in liquid

2017 ◽  
Vol 28 (45) ◽  
pp. 455603 ◽  
Author(s):  
Hitoshi Asakawa ◽  
Natsumi Inada ◽  
Kaito Hirata ◽  
Sayaka Matsui ◽  
Takumi Igarashi ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Frequency Modulation ◽  
Self Assembled Monolayers ◽  
Force Microscopy ◽  
Atomic Force ◽  
Assembled Monolayers ◽  
Self Assembled
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