| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2024-10-30 |
| タイトル |
|
|
タイトル |
In situ thermal noise measurements under nanoindentation of suspended graphene |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| キーワード |
|
|
主題 |
graphene, AFM, indentation, force curve, thermal noise, InvOLS |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 著者 |
Rin, Takehara
Yuki, Uto
Tomohiro, Matsui
Masahiro, Hara
|
| 内容記述 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
We demonstrated thermal noise measurement under the nanoindentation of monolayer and bilayer graphene nanodrums. The resonant oscillation of the cantilever excited only by a thermal energy is detectable even in the case of contact with a suspended graphene. The contact resonance fRequency can be obtained in 1 millisecond intervals during the force curve measurement by optimizing the parameters of a real-time spectrum analyzer. The pretension value of the graphene nanodrum is evaluated by the minimum frequency just when the applied force of the cantilever becomes zero. The simultaneous measurement of the force and the resonant frequency with respect to the deformation of the graphene nanodrum enables us to determine the value of InvOLS (inverse optical lever sensitivity) more accurately in each measurement. From the analysis scheme, force curve measurements of the graphene nanodrums with the same diameters show good reproducibility. We also revealed that the effective spring constant of the graphene nanodrums consists of a weak sample-dependent pretension factor and a deformation-dependent factor proportional to the number of graphene layers. |
| bibliographic_information |
en : Nanotechnology
巻 34,
号 47,
p. 475704,
発行年 2023-09-06
|
| item_16_source_id_7 |
|
|
収録物識別子 |
0957-4484 |
| 出版タイプ |
|
|
出版タイプ |
AM |
|
出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| 出版者 |
|
|
出版者 |
IOP Publishing |
| 関連 |
|
|
関連タイプ |
isVersionOf |
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|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.1088/1361-6528/acf29d |
10.1088_1361-6528_acf29d.pdf (1.8 MB)
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