Tuesday, April 18, 2023 MSE 219 | Thermal Analysis
Surface characterization and thermal analysis of spray-deposited graphene on polyimide substrates before and after plasma treatment
RESEARCH PROPOSAL BY RAYNELL A. INOJOSAAdviser: Dr. Mary Donnabelle BalelaCo-adviser: Dr. Magdaleno R. Vasquez, Jr.
Tuesday, April 18, 2023 MSE 219 | Thermal Analysis
Outline
Introduction Background of the study Objective
Experimental details Expected results Time table References
Tuesday, April 18, 2023 MSE 219 | Thermal Analysis
Background of the study
The demand for high-performance microelectronic devices [1] has paved way to the synthesis of polymer materials deposited with carbon layers[2-3], such as graphene [4].The widely-utilized method for modifying the surface properties of polymer materials is via plasma treatment[5] since it affects only few nanometers deep of the material without changing its bulk properties [6]. In addition, the DC source plasma is an effective tool for many types of application including surfaces treatment, sputtering, etching, and deposition of coatings [7].
Tuesday, April 18, 2023 MSE 219 | Thermal Analysis
Objectives
The goal of this study is to investigate the effect of gaseous discharges on graphene deposited on polyimide (PI) substrates via spray-pyrolysis. A detailed characterization of the surface chemical states, thermal properties, and morphology of graphene-deposited polyimide films before and after plasma treatment will also be discussed.
Tuesday, April 18, 2023 MSE 219 | Thermal Analysis
Experimental details
FIRST PHASEPreparation of materials; deposition setup
SECOND PHASEPlasma Treatment using Ar and N2 at varying exposure periods
THIRD PHASESurface Characterization and Thermal Analysis
Tuesday, April 18, 2023 MSE 219 | Thermal Analysis
Expected results (hypotheses) Plasma treatment is expected to roughen
the surface of the samples because the gas ions generated in this plasma are known to cause mainly sputter etching of the surface.
A little chemical modification on the deposited graphene may occur.
Surface roughness , wettability and adhesion property of the samples are likely to depend on the plasma treatment periods and type of gas used.
Tuesday, April 18, 2023 MSE 219 | Thermal Analysis
Time table
RESEARCH PHASE
ACTIVITIES WEEK OUTPUT
Data gathering Journal readingConsultation
1-2 TopicRelated literature
Preparation of materials
Procurement 3 Polyimide films (Nilaco Corp.)Graphite powders (Sigma-Aldrich)
Experimentation and analysis
Spray pyrolysisPlasma treatmentSEM, XRD, TGA
4-5 Pre-treated and post-treated PI substratesInitial results
Paper Writing •Final paper writing with experimental results
6 Comprehensive paper for publication
Tuesday, April 18, 2023 MSE 219 | Thermal Analysis
References
[1] Brown W L, Radiat. Eff., 98, 115-137 (1986).[2] S. R. Kim, J. of Appl. PolymerSci., Vol. 77, No. 9,1913-
1920 (2000)[3] R. W. B. Pearse and A. G. Gaydon, The Identification of
Molecular Spectra(John Wiley & Sons, New York,1976).[4] Petr Slepičk, et al., “The Properties and Application of
Carbon Nanostructures, Polymer Science, Chapter 7, 175-180 (2013)
[5] E. Njatawidjaja, M. Kodama, K. Matsuzaki, K. Yasuda, T. Matsuda and M. Kogoma, Surf.Coat.Technol., 699-706 (2006)
[6] C. Labay, C. Canal, C. Rodriguez, G. Caballero, J.M. Canal, Appl.Surf.Sci.283, 269-275 (2013).
[7] G.S. Selwyn, H.W. Herrmann, J. Park, and I. Henins, Contrib. Plasma Phys.41 (2001) 610-619.