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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Robinson, Bj
Lancaster University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2023Determination of electric and thermoelectric properties of molecular junctions by AFM in peak force tapping modecitations
- 2022Thermoelectric properties of organic thin films enhanced by π-π stackingcitations
- 2021Optimised power harvesting by controlling the pressure applied to molecular junctionscitations
- 2020Scale-Up of Room-Temperature Constructive Quantum Interference from Single Molecules to Self-Assembled Molecular-Electronic Filmscitations
- 2020Tuning the thermoelectrical properties of anthracene-based self-assembled monolayerscitations
- 2020Molecular-scale thermoelectricity: As simple as 'ABC'citations
- 2017Correlation of nano-scale electrical and topographical mapping of buried nanoscale semiconductor junctions
- 2017Large-Area 2D-0D Heterostructures via Langmuir-Blodgett Film Deposition
- 2017Characterisation of local thermal properties in nanoscale structures by scanning thermal microscopy
- 2017SPM characterisation of nanomechanical proprieties of C60 monolayer formed by LB
- 2016Towards Robust Electroactive Biomaterials
- 2014Graphitic platform for self-catalysed InAs nanowires growth by molecular beam epitaxycitations
- 2014Nanothermal characterization of amorphous and crystalline phases in chalcogenide thin films with scanning thermal microscopycitations
Places of action
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article
Determination of electric and thermoelectric properties of molecular junctions by AFM in peak force tapping mode
Abstract
<jats:title>Abstract</jats:title><jats:p>Molecular thin films, such as self-assembled monolayers (SAMs), offer the possibility of translating the optimised thermophysical and electrical properties of high-Seebeck-coefficient single molecules to scalable device architectures. However, for many scanning probe-based approaches attempting to characterise such SAMs, there remains a significant challenge in recovering single-molecule equivalent values from large-area films due to the intrinsic uncertainty of the probe-sample contact area coupled with film damage caused by contact forces. Here we report a new reproducible non-destructive method for probing the electrical and thermoelectric properties of small assemblies (10 – 10<jats:sup>3</jats:sup>) of thiol-terminated molecules arranged within a SAM on a gold surface, and demonstrate the successful and reproducible measurements of the equivalent single-molecule electrical conductivity and Seebeck values. We have used a modified thermal-electric force microscopy (TEFM) approach, which integrates the conductive-probe atomic force microscope, a sample positioned on a temperature-controlled heater, and a probe-sample peak-force feedback that interactively limits the normal force across the molecular junctions. The experimental results are interpreted by density functional theory calculations allowing quantification the electrical quantum transport properties of both single molecules and small clusters of molecules. Significantly, this approach effectively eliminates lateral forces between probe and sample, minimising disruption to the SAM while enabling simultaneous mapping of the SAMs nanomechanical properties, as well as electrical and/or thermoelectric response, thereby allowing correlation of the film properties.&#xD;</jats:p>