  The evolution of dynamic processes in graphene-family materials are of great
interest for both scientific purposes and technical applications. Scanning
electron microscopy and transmission electron microscopy outstand among the
techniques that allow both observing and controlling such dynamic processes in
real time. On the other hand, functionalized graphene oxide emerges as a
favorable candidate from graphene-family materials for such an investigation
due to its distinctive properties, that encompass a large surface area, robust
thermal stability, and noteworthy electrical and mechanical properties after
its reduction. Here, we report on studies of surface structure and adsorption
dynamics of L-Cysteine on electrochemically exfoliated graphene oxides basal
plane. We show that electron beam irradiation prompts an amorphization of
functionalized graphene oxide along with the formation of micropatterns of
controlled geometry composed of L-Cysteine-Graphene oxide nanostructures. The
controlled growth and predetermined arrangement of micropatterns as well as
controlled structure disorder induced by e beam amorphization, in its turn
potentially offering tailored properties and functionalities paving the way for
potential applications in nanotechnology, sensor development, and surface
engineering. Our findings demonstrate that graphene oxide can cover L-Cysteine
in such a way to provide a control on the positioning of emerging
microstructures about 10-20 um in diameter. Besides, Raman and SAED measurement
analyses yield above 50% amorphization in a material. The results of our
studies demonstrate that such a technique enables the direct creation of
micropatterns of L-Cysteine-Graphene oxide eliminating the need for complicated
mask patterning procedures.
