MSE 219 Research Proposal [Inojosa]

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.


Outline

Introduction Background of the study Objective

Experimental details Expected results Time table References


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].


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.


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


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.


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


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.

Documents

MSE 219 Research Proposal [Inojosa]