6533b85bfe1ef96bd12ba17f
RESEARCH PRODUCT
Single-molecule switching with non-contact atomic force microscopy
Ralf BechsteinJens SchütteMichael RohlfingHeinz LanghalsAngelika KühnlePhilipp Rahesubject
Kelvin probe force microscopeMaterials scienceMechanical EngineeringElectrostatic force microscopeBioengineeringGeneral ChemistryConductive atomic force microscopyLocal oxidation nanolithography530Molecular physicsCrystallographyMechanics of MaterialsMoleculeGeneral Materials ScienceElectrical and Electronic EngineeringMagnetic force microscopeNon-contact atomic force microscopyPhotoconductive atomic force microscopydescription
We report upon controlled switching of a single 3,4,9,10-perylene tetracarboxylic diimide derivative molecule on a rutile TiO(2)(110) surface using a non-contact atomic force microscope at room temperature. After submonolayer deposition, the molecules adsorb tilted on the bridging oxygen row. Individual molecules can be manipulated by the atomic force microscope tip in a well-controlled manner. The molecules are switched from one side of the row to the other using a simple approach, taking benefit of the sample tilt and the topography of the titania substrate. From density functional theory investigations we obtain the adsorption energies of different positions of the molecule. These adsorption energies are in very good agreement with our experimental observations.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-04-22 | Nanotechnology |