Abstract
In this work, we study the functionalized gallium arsenide (GaAs) surface with self-assembled monolayer (SAM) by means of atomic force microscopy (AFM). First, we study the flatness of the dummy GaAs surface through AFM in electrolyte. Second, with the same technique, we study the effect of SAMs of octadecanethiol (C 18H 37SH) and alcohol-thiol (HOCH 2(CH 2) 10SH) on GaAs surface. Finally, for GaAs treated with octadecanethiol monolayer, we observe a hysteresis—demonstrating that the surface is hydrophobic and that the Van der Waals interaction between the tip and the sample is very high. GaAs treated with alcohol-thiol shows hysteresis, which shows that the surface is hydrophilic and uncharged.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
