Direct Writing Patterns for Gold Thin Film with DPN Technique

Dip-pen nanolithography combined with wet-chemical etching has been used to generate gold nanostructures with desired shapes and sizes. Self-assembled monolayers of 16-mercaptohexadecanoic acid have been patterned by DPN in different shapes: dots, lines and complex shapes, interdigits electrodes. AFM and LFM were used to measure the roughness of gold surface and to examine the thiol deposition and binding quality. These results show that DPN can be used as alternative method to generate different patterns used for complex devices, biosensor, and optoelectronic devices.