Robust Photopatterning of Gold-Thiol Self-Assembled Monolayers

01 August 2019, Version 1
This content is a preprint and has not undergone peer review at the time of posting.


While photopatterning is in widespread use for patterning inorganic semiconductors, patterning of widely-used gold-thiol organic self-assembled monolayers is typically done with contact methods. Through common atomic force microscope techniques and quantification of the energy impinging on the target surface, the energy required for UV-photooxidation of Au-Thiol SAMs can be determined. This quantification allows for the precise control of features using simple shadow masking from electron microscopy grids or other targets. Beyond characterizing the accuracy and resolution of features, the pattern stability of the resulting monolayers is examined indicating a drive toward phase segregation and increasing order of the mixed monolayers.


Atomic Force Microscopy imaging
Scanning Kelvin Probe Microscopy
Self-assembled monolayers

Supplementary materials

PhotoPatterning SI


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