Probing the Intrinsic Strain in Suspended Graphene Films Using Electron and Optical Microscopy
Abstract Quantifying the intrinsic properties of 2D materials is of paramount importance for advancing their applications. Large‐scale production of 2D materials merits the need for approaches that provide direct information about the role of growth substrate on 2D material properties. Transferring...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2024-02-01
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| Series: | Advanced Science |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/advs.202305366 |
| _version_ | 1797329396481130496 |
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| author | Kishan Thodkar Milivoj Plodinec Fabian Gramm Karsten Kunze |
| author_facet | Kishan Thodkar Milivoj Plodinec Fabian Gramm Karsten Kunze |
| author_sort | Kishan Thodkar |
| collection | DOAJ |
| description | Abstract Quantifying the intrinsic properties of 2D materials is of paramount importance for advancing their applications. Large‐scale production of 2D materials merits the need for approaches that provide direct information about the role of growth substrate on 2D material properties. Transferring the 2D material from its growth substrates can modify the intrinsic properties of the asgrown 2D material. In this study, suspended chemical vapor deposition (CVD) graphene films are prepared directly on their growth substrates in a high‐density grid array. The approach facilitates the quantification of intrinsic strain and doping in suspended CVD graphene films. To achieve this, transmission electron microscopy and large‐area Raman mapping are employed. Remarkably, the analysis reveals consistent patterns of compressive strain (≈−0.2%) both in the diffraction patterns and Raman maps obtained from these suspended graphene films. By conducting investigations directly on the growth substrates, the potential influences introduced during the transfer process are circumvented effectively. Consequently, the methodology offers a robust and reliable means of studying the intrinsic properties of 2D materials in their authentic form, uninfluenced by the transfer‐induced alterations that may skew the interpretation of their properties. |
| first_indexed | 2024-03-08T07:05:11Z |
| format | Article |
| id | doaj.art-cdc45f477b5c4b2db0c6e0b50c93dded |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-03-08T07:05:11Z |
| publishDate | 2024-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-cdc45f477b5c4b2db0c6e0b50c93dded2024-02-03T05:02:44ZengWileyAdvanced Science2198-38442024-02-01115n/an/a10.1002/advs.202305366Probing the Intrinsic Strain in Suspended Graphene Films Using Electron and Optical MicroscopyKishan Thodkar0Milivoj Plodinec1Fabian Gramm2Karsten Kunze3Micro‐ & Nanosystems Department of Mechanical & Process Engineering ETH Zurich Tannenstrasse 3 Zurich 8092 SwitzerlandScopeM ETH Zurich Otto‐Stern‐Weg 3 Zurich 8093 SwitzerlandScopeM ETH Zurich Otto‐Stern‐Weg 3 Zurich 8093 SwitzerlandScopeM ETH Zurich Otto‐Stern‐Weg 3 Zurich 8093 SwitzerlandAbstract Quantifying the intrinsic properties of 2D materials is of paramount importance for advancing their applications. Large‐scale production of 2D materials merits the need for approaches that provide direct information about the role of growth substrate on 2D material properties. Transferring the 2D material from its growth substrates can modify the intrinsic properties of the asgrown 2D material. In this study, suspended chemical vapor deposition (CVD) graphene films are prepared directly on their growth substrates in a high‐density grid array. The approach facilitates the quantification of intrinsic strain and doping in suspended CVD graphene films. To achieve this, transmission electron microscopy and large‐area Raman mapping are employed. Remarkably, the analysis reveals consistent patterns of compressive strain (≈−0.2%) both in the diffraction patterns and Raman maps obtained from these suspended graphene films. By conducting investigations directly on the growth substrates, the potential influences introduced during the transfer process are circumvented effectively. Consequently, the methodology offers a robust and reliable means of studying the intrinsic properties of 2D materials in their authentic form, uninfluenced by the transfer‐induced alterations that may skew the interpretation of their properties.https://doi.org/10.1002/advs.202305366chemical vapor deposition (CVD)electron backscatter diffraction (EBSD)Raman spectroscopysuspended graphenetransmission electron microscopy (TEM) |
| spellingShingle | Kishan Thodkar Milivoj Plodinec Fabian Gramm Karsten Kunze Probing the Intrinsic Strain in Suspended Graphene Films Using Electron and Optical Microscopy Advanced Science chemical vapor deposition (CVD) electron backscatter diffraction (EBSD) Raman spectroscopy suspended graphene transmission electron microscopy (TEM) |
| title | Probing the Intrinsic Strain in Suspended Graphene Films Using Electron and Optical Microscopy |
| title_full | Probing the Intrinsic Strain in Suspended Graphene Films Using Electron and Optical Microscopy |
| title_fullStr | Probing the Intrinsic Strain in Suspended Graphene Films Using Electron and Optical Microscopy |
| title_full_unstemmed | Probing the Intrinsic Strain in Suspended Graphene Films Using Electron and Optical Microscopy |
| title_short | Probing the Intrinsic Strain in Suspended Graphene Films Using Electron and Optical Microscopy |
| title_sort | probing the intrinsic strain in suspended graphene films using electron and optical microscopy |
| topic | chemical vapor deposition (CVD) electron backscatter diffraction (EBSD) Raman spectroscopy suspended graphene transmission electron microscopy (TEM) |
| url | https://doi.org/10.1002/advs.202305366 |
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