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Development and Characterization of Freestanding Poly (Methyl Methacrylate)/Monolayer Graphene Membrane

Graphene-polymer based materials are gaining more popularity among researchers due to its mechanical properties that are found to be suitable to be used in various micro/nanoscale application requiring highly sensitive sensors. This research ventured into the fabrication and characterization process...

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Main Authors: Bais, Badariah, Yusof, Norliana, Soin, Norhayati, Yunas, Jumril, Yeop Majlis, Burhanuddin
Format: Article
Published: Institute of Electrical and Electronics Engineers 2020
Subjects:
QA75 Electronic computers. Computer science
Online Access:http://eprints.um.edu.my/36992/
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spelling my.um.eprints.369922024-11-27T03:29:51Z http://eprints.um.edu.my/36992/ Development and Characterization of Freestanding Poly (Methyl Methacrylate)/Monolayer Graphene Membrane Bais, Badariah Yusof, Norliana Soin, Norhayati Yunas, Jumril Yeop Majlis, Burhanuddin QA75 Electronic computers. Computer science Graphene-polymer based materials are gaining more popularity among researchers due to its mechanical properties that are found to be suitable to be used in various micro/nanoscale application requiring highly sensitive sensors. This research ventured into the fabrication and characterization process of a freestanding poly (methyl methacrylate) (PMMA) on monolayer graphene (Gr) yielding a (PMMA/Gr) membrane. In the process of transferring the chemical vapor deposition (CVD) graphene film over a cavity that was developed on a silicon substrate, the wet transfer method was used. Five repetitions of the nanoindentation testing had been carried out on the flexible membrane which resulted in a reproducible deflection, when exerted with a maximum loading of 10 mN. The indented (PMMA/Gr) membrane showed an identical elastic behavior with Young;s modulus of 0.18 GPa. The highest deflection of approximately at 1.6 mN maximum loads and the tensile stress of 0.58 MPa was obtained from the indentation testing analysis. The combination of PMMA-Graphene materials as a membrane has shown impressive changes to its mechanical properties. Besides maintaining its viscoelastic-plastic behavior which contributed to its flexibility, the presence of a graphene layer provided strong support to prevent damages to the membrane. Meanwhile, PMMA properties with low elastic modulus have contributed to the increased of the mechanical sensitivity of the membrane. Based on this research, the mechanical sensitivity of (PMMA/Gr) is reported to be 0.15 nm/Pa, which is much higher compared to a typical conventional membrane. It was proven that the hybrid (PMMA/Gr) membrane was extremely sensitive to the subjected pressures, thus, shown its potential to be applied as a micro-electro-mechanical systems (MEMS) capacitive pressure sensor. Institute of Electrical and Electronics Engineers 2020 Article PeerReviewed Bais, Badariah and Yusof, Norliana and Soin, Norhayati and Yunas, Jumril and Yeop Majlis, Burhanuddin (2020) Development and Characterization of Freestanding Poly (Methyl Methacrylate)/Monolayer Graphene Membrane. IEEE Access, 8. pp. 29702-29710. ISSN 2169-3536, DOI https://doi.org/10.1109/ACCESS.2020.2972558 <https://doi.org/10.1109/ACCESS.2020.2972558>. 10.1109/ACCESS.2020.2972558
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic QA75 Electronic computers. Computer science
spellingShingle QA75 Electronic computers. Computer science
Bais, Badariah
Yusof, Norliana
Soin, Norhayati
Yunas, Jumril
Yeop Majlis, Burhanuddin
Development and Characterization of Freestanding Poly (Methyl Methacrylate)/Monolayer Graphene Membrane
description Graphene-polymer based materials are gaining more popularity among researchers due to its mechanical properties that are found to be suitable to be used in various micro/nanoscale application requiring highly sensitive sensors. This research ventured into the fabrication and characterization process of a freestanding poly (methyl methacrylate) (PMMA) on monolayer graphene (Gr) yielding a (PMMA/Gr) membrane. In the process of transferring the chemical vapor deposition (CVD) graphene film over a cavity that was developed on a silicon substrate, the wet transfer method was used. Five repetitions of the nanoindentation testing had been carried out on the flexible membrane which resulted in a reproducible deflection, when exerted with a maximum loading of 10 mN. The indented (PMMA/Gr) membrane showed an identical elastic behavior with Young;s modulus of 0.18 GPa. The highest deflection of approximately at 1.6 mN maximum loads and the tensile stress of 0.58 MPa was obtained from the indentation testing analysis. The combination of PMMA-Graphene materials as a membrane has shown impressive changes to its mechanical properties. Besides maintaining its viscoelastic-plastic behavior which contributed to its flexibility, the presence of a graphene layer provided strong support to prevent damages to the membrane. Meanwhile, PMMA properties with low elastic modulus have contributed to the increased of the mechanical sensitivity of the membrane. Based on this research, the mechanical sensitivity of (PMMA/Gr) is reported to be 0.15 nm/Pa, which is much higher compared to a typical conventional membrane. It was proven that the hybrid (PMMA/Gr) membrane was extremely sensitive to the subjected pressures, thus, shown its potential to be applied as a micro-electro-mechanical systems (MEMS) capacitive pressure sensor.
format Article
author Bais, Badariah
Yusof, Norliana
Soin, Norhayati
Yunas, Jumril
Yeop Majlis, Burhanuddin
author_facet Bais, Badariah
Yusof, Norliana
Soin, Norhayati
Yunas, Jumril
Yeop Majlis, Burhanuddin
author_sort Bais, Badariah
title Development and Characterization of Freestanding Poly (Methyl Methacrylate)/Monolayer Graphene Membrane
title_short Development and Characterization of Freestanding Poly (Methyl Methacrylate)/Monolayer Graphene Membrane
title_full Development and Characterization of Freestanding Poly (Methyl Methacrylate)/Monolayer Graphene Membrane
title_fullStr Development and Characterization of Freestanding Poly (Methyl Methacrylate)/Monolayer Graphene Membrane
title_full_unstemmed Development and Characterization of Freestanding Poly (Methyl Methacrylate)/Monolayer Graphene Membrane
title_sort development and characterization of freestanding poly (methyl methacrylate)/monolayer graphene membrane
publisher Institute of Electrical and Electronics Engineers
publishDate 2020
url http://eprints.um.edu.my/36992/
_version_ 1817841934112129024
score 13.223943

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