109Ferry IskandarApproaching 2D-materials with Langmuir Schaefer Method (Project 2016)73geothermal activities related to subsidence. In the Kamojang geothermal field, unfortunately, interactions between tectonics and geothermal activity have not yet been analyzed using GPS. Thus, crustal deformation analyses become mandatory, especially considering the long history of the Kamojang geothermal field and the geographical situation located near the Guntur volcano. Results of this research show that the horizontal velocity in this area ranges from 2.60 mm/year to 20.75 mm/year, with the maximum horizontal velocity at KMJ6 station. Strain patterns occurring around the reservoir area are dominated by compression due to heat and fluid extraction of geothermal activity.Tuning materials arrangement in two-dimensions modifies its physical and chemical properties. Here, we develop a bottom-up approach for arrangement 2-dimensition materials based on self-assembly method which named Langmuir-Schaefer method and drop casting method. We have obtained a homemade Langmuir Schaefer machine and reduced graphene method (rGO) thin film deposition with drop casting method. The Langmuir Schaefer machine was consisted of a trough made from Polytetrafluoroethyene (PTFE) and moveable barrier for controlling the subphase (liquid). This type of set-up makes it feasible for thin film fabrication with well molecular control. Furthermore, rGO thin film, whereas graphene is an appealing material with excellent electrical and optical properties, was obtained in this project. Prior thin film deposition, graphene oxide (GO) was synthesized by wet chemistry process. The synthesis process was followed with drop casted the precursor into a substrate and followed with reduction process in order to obtain rGO film. These approach open new horizons in the science and technology for thin film deposition.
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