Organic molecular films on metal and graphene surfaces studied with LEEM

F.S. Khokhar

Research output: ThesisPhD Thesis - Research UT, graduation UTAcademic

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Abstract

One of the grand goals of materials science is to be able to design, build, and understand functional materials with a precision that is equal to the size of the smallest possible entity, i.e. the size of an atom. This atomic‐scale engineering of materials is a difficult, if not impossible, feat to achieve in three dimensions. In two dimensions, it is already challenging enough. The large‐scale, controlled positioning, application, and patterning of individual atoms and molecules on a substrate remains an elusive goal to this day Several techniques exist, but each has its drawbacks with respect to homogeneity of the fabricated structures, the defect density, or other relevant properties. In this work, we explore a novel approach to the functionalization of substrates. The noncovalent patterning and functionalization of substrates is investigated to establish its effectiveness for future applications. The aim of our work is to directly image the formation of the patterns, and to expose and quantify the relevant thermodynamic growth parameters. Features that are relevant to the positioning of the self‐assembling entities can also be identified through this approach. In the formation of the final patterns, we aim to exploit long‐range interactions that are normally present in self‐assembling systems.
Original languageEnglish
Awarding Institution
  • University of Twente
Supervisors/Advisors
  • Poelsema, B., Supervisor
  • van Gastel, Raoul, Advisor
  • Hlawacek, G., Advisor
Award date11 Jan 2012
Place of PublicationEnschede
Publisher
Print ISBNs978-90-365-3269-3
DOIs
Publication statusPublished - 11 Jan 2012

Fingerprint

Graphite
Metals
Functional materials
Defect density
Substrates
Materials science
Thermodynamics
Atoms
Molecules

Keywords

  • METIS-286052
  • Optics (see also 3311)Solid state physics (see also 2307)Niet in een andere rubriek onder te brengen
  • IR-79226

Cite this

Khokhar, F.S.. / Organic molecular films on metal and graphene surfaces studied with LEEM. Enschede : University of Twente, 2012. 113 p.
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Organic molecular films on metal and graphene surfaces studied with LEEM. / Khokhar, F.S.

Enschede : University of Twente, 2012. 113 p.

Research output: ThesisPhD Thesis - Research UT, graduation UTAcademic

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T1 - Organic molecular films on metal and graphene surfaces studied with LEEM

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AB - One of the grand goals of materials science is to be able to design, build, and understand functional materials with a precision that is equal to the size of the smallest possible entity, i.e. the size of an atom. This atomic‐scale engineering of materials is a difficult, if not impossible, feat to achieve in three dimensions. In two dimensions, it is already challenging enough. The large‐scale, controlled positioning, application, and patterning of individual atoms and molecules on a substrate remains an elusive goal to this day Several techniques exist, but each has its drawbacks with respect to homogeneity of the fabricated structures, the defect density, or other relevant properties. In this work, we explore a novel approach to the functionalization of substrates. The noncovalent patterning and functionalization of substrates is investigated to establish its effectiveness for future applications. The aim of our work is to directly image the formation of the patterns, and to expose and quantify the relevant thermodynamic growth parameters. Features that are relevant to the positioning of the self‐assembling entities can also be identified through this approach. In the formation of the final patterns, we aim to exploit long‐range interactions that are normally present in self‐assembling systems.

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