國立虎尾科技大學 |

Interfacial Properties of Graphene and 2D Materials Heterostructures Investigated by Scanning Probe Microscopy.

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	Interfacial Properties of Graphene and 2D Materials Heterostructures Investigated by Scanning Probe Microscopy./
作者:	Tu, Qing.
面頁冊數:	1 online resource (171 pages)
附註:	Source: Dissertation Abstracts International, Volume: 78-09(E), Section: B.
Contained By:	Dissertation Abstracts International78-09B(E).
標題:	Mechanical engineering. -
電子資源:	click for full text (PQDT)
ISBN:	9781369715132

Interfacial Properties of Graphene and 2D Materials Heterostructures Investigated by Scanning Probe Microscopy.
Tu, Qing.

Interfacial Properties of Graphene and 2D Materials Heterostructures Investigated by Scanning Probe Microscopy. - 1 online resource (171 pages)

Source: Dissertation Abstracts International, Volume: 78-09(E), Section: B.

Thesis (Ph.D.)

Includes bibliographical references

This item is not available from ProQuest Dissertations & Theses.

2D materials, e.g., graphene, and heterostructures have extraordinary properties compared to their 3D counterparts, and have great potential for a broad range of applications, including flexible electronic devices, nanocomposites, and transistors. However, in most of these applications the 2D materials need to interface with other materials such as substrates or other 2D heteroststructures for not only device functionality but also mechanical stability. The interfacial properties of 2D materials and heterostructures greatly affect the performance of these 2D materials-based devices and thus call for further investigation.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9781369715132Subjects--Topical Terms:

557493
Mechanical engineering.
Index Terms--Genre/Form:

554714
Electronic books.

Interfacial Properties of Graphene and 2D Materials Heterostructures Investigated by Scanning Probe Microscopy.
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500 $a Source: Dissertation Abstracts International, Volume: 78-09(E), Section: B.
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504 $a Includes bibliographical references
506 $a This item is not available from ProQuest Dissertations & Theses.
520 $a 2D materials, e.g., graphene, and heterostructures have extraordinary properties compared to their 3D counterparts, and have great potential for a broad range of applications, including flexible electronic devices, nanocomposites, and transistors. However, in most of these applications the 2D materials need to interface with other materials such as substrates or other 2D heteroststructures for not only device functionality but also mechanical stability. The interfacial properties of 2D materials and heterostructures greatly affect the performance of these 2D materials-based devices and thus call for further investigation.
520 $a In this dissertation, advanced scanning probe microscopy (SPM) techniques, including contact resonance atomic force microscopy (CR-AFM) and piezoresponse force microscopy (PFM), are applied to study the interfacial mechanical and piezoelectrical properties of graphene and 2D materials heterostructures. For the first time, CR-AFM is demonstrated with the sensitivity to local stiffness changes that arise from a single atomic layer of a van-der-Waals-adhered material. To this end, a new approach, combining CR-AFM with first-principles calculations and continuum mechanics modeling, is introduced, which can yield a quantitative subsurface atomic structure fingerprint for 2D materials and heterostructures, as demonstrated on an ideal model system -- epitaxial graphene on SiC (0001). This model system is further investigated with PFM, which revealed a new source of piezoelectricity in graphene layers that arises from the presence of interfacial dipole moments induced by the polarization in the substrate. The last part of the dissertation discusses the interfacial mechanical properties of graphene deposited onto self-assembled-monolayers (SAMs). CR-AFM experiments and molecular dynamics (MD) simulations show that the surface energy of the SAM strongly affects the amount of water molecules present at the graphene-SAM interface, which in turn influences the elastic modulus of these graphene-SAM heterostructures. The SPM methods used in this dissertation can provide rich structure-property information about interfaces and surfaces, and can be used to understand other interfacial problems of fundamental and practical interest in 2D materials and heterostructures, such as nanoconfined water and 2D layered hybrid organic-inorganic perovskites.
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