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Physics and chemistry at the single molecule level

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Presentation on theme: "Physics and chemistry at the single molecule level"— Presentation transcript:

1 Physics and chemistry at the single molecule level
André Gourdon The NanoSciences Group (GNS): Centre d’élaboration de matériaux et d’études structurales 1st French-Czech Barrande Nano and Advanced Materials Workshop, Brno April 2017

2 CEMES main research activities
 Material Science, Solid State Physics and Nanoscience Thin films and heterostructures Calculation Modelisation Materials & Nanomaterials Molecular chemistry and Nanoscience Transmission Electron Microscopy Nano- micro-electronic, Nanomagnetism & Optic Optical spectroscopies Scanning probe microscopies André Gourdon Brno, April 2017

3 Centre d’élaboration de matériaux et d’études structurales
CNRS laboratory (Unité Propre) associated to the University Institute of Physics and Institute of Chemistry – partner of the Labex NEXT 69 permanent researchers; 44 engineers and technicians; ≈ 50 PhDs; ≈ 30 post-docs 7 research groups PPM: Physics of Plasticity and Metallurgy SINanO: Surfaces, Interfaces & Nano- Objects M3: Multi-functional and Multi-scale Materials MEM: Materials and devices for Electronics and Magnetism I3EM: Interferometry In-situ Instrumentation for Electron Microscopy NeO: Nano-Optics and Nanomaterials for optics GNS: Nanosciences group André Gourdon Brno, April 2017

4 Centre d’élaboration de matériaux et d’études structurales
CNRS laboratory (Unité Propre) associated to the University Institute of Physics and Institute of Chemistry – partner of the Labex NEXT 69 permanent researchers; 44 Engineers and technicians; ≈ 50 PhDs; ≈ 30 post-docs 7 research groups PPM: Physics of Plasticity and Metallurgy SINanO: Surfaces, Interfaces & Nano- Objects M3: Multi-functional and Multi-scale Materials MEM: Materials and devices for Electronics and Magnetism I3EM: Interferometry In-situ Instrumentation for Electron Microscopy NeO: Nano-Optics and Nanomaterials for optics GNS: Nanosciences group André Gourdon Brno, April 2017

5 Observation, measurement
The NanoSciences Group Design & Synthesis Theory & Simulation Observation, measurement & manipulation at the nm/pm scales LUMO HOMO -Satellite laboratory of the japanese MANA project -Host laboratory for NAIST (Japan) -Participation to /coordination of many European projects – Currently PAMS André Gourdon Brno, April 2017

6 Activity & objectives GNS
UHV-Atom Tech Nanotech Molecule logic gate Nano-mechanics Nano-plasmonics Nano-wetting Nano-electronics Molecular magnetism Atom circuits AFM & SNOM; colloidal chemistry LT-UHV-STM&NC-AFM; 4-probes; DUF; surface science; synthesis Molecule-machines Molecular plasmonics Tools Tools 0.1 nm 1 nm 10 nm 100 nm André Gourdon Brno, April 2017

7 Activity & objectives GNS
UHV-Atom Tech Nanotech Molecule logic gate Nano-mechanics Nano-plasmonics Nano-wetting Nano-electronics Molecular magnetism Atom circuits AFM & SNOM; colloidal chemistry LT-UHV-STM&NC-AFM; 4-probes; DUF; surface science; synthesis Molecule-machines Molecular plasmonics Tools Tools 0.1 nm 1 nm 10 nm 100 nm André Gourdon Brno, April 2017

8 Activity & objectives GNS
UHV-Atom Tech Nanotech Molecule logic gate Nano-mechanics Nano-plasmonics Nano-wetting Nano-electronics Molecular magnetism Atom circuits AFM & SNOM; colloidal chemistry LT-UHV-STM&NC-AFM; 4-probes; DUF; surface science; synthesis Molecule-machines Molecular plasmonics Tools Tools 0.1 nm 1 nm 10 nm 100 nm André Gourdon Brno, April 2017

9 Focus on two projects: 9 1- Molecular electronics:
Addressing a single molecule Single molecular/atomic device “Ingredients”: Nano to macro scale connections N-probe STM Passivated semi-conductors: H:Ge(001)/Ge or H:Si(001)/Si Large band-gap SC: AlN (0001) Dielectrics: Calcite: CaCO3 Molecular/atomic wiring Atomic scale precision: UHV STM/Nc-AFM for imaging, manipulation, spectroscopy Planar Atomic & Molecular Scale technologies André Gourdon Brno, April 2017 9

10 Focus on two projects: 1- Molecular electronics:
Addressing a single molecule Single molecular/atomic device “Ingredients”: Nano to macro scale connections N-probe STM Passivated semi-conductors: H:Ge(001)/Ge or H:Si(001)/Si Large band-gap SC: AlN (0001) Dielectrics: Calcite: CaCO3 Pads Molecular/atomic wiring Atomic scale precision: UHV STM/Nc-AFM for imaging, manipulation, spectroscopy Planar Atomic & Molecular Scale technologies André Gourdon Brno, April 2017 10

11 Nanoelectrodes on a large band-gap insulator: AlN
Initial objective: Find a couple metal/insulator for which the metal grow as 2D islands AlN: large gap 6.2 eV – NC-AFM Unknown surface structure so far Reactive substrate : -preparation by MBE -on 4H-SiC(0001) (1% mismatch) substrate Al + NH3: very slow growth rate 10 nm/h -small dislocation density 2 109/cm2 -transfer in UHV to a RT NC-AFM chamber PRB 94, (2016) AIP Adv. 5, (2015) D. Martou B. Baris F. Chaumeton S. Gauthier B. Eydoux X. Bouju 11 André Gourdon Brno, April 2017

12 2D 1ML Au islands on AlN(0001) - charging
Charging at t=0 (+9V /tip) Topography Long retention time No inter-island charge transfer Df vs V: jumps corresponding to single charge transfers To sum up: we have large 2D 1ML isolated Au nanopads on a fully insulating surface KPFM André Gourdon Brno, April 2017

13 « Wiring »: On-Surface Synthesis of GNR on Au(111)
CNRS Krakow Objectives :Graphene NanoRibbons by direct double Ullmann coupling in one step without high temperature cyclodehydrogenation On Au(111), 430K Hydrogenated GNR H° R. Zuzak S. Godlewski A. Jancarik André Gourdon Brno, April 2017

14 Focus on two projects: 2- Molecular mechanics: Coordinated rotations
Motors Rotors Nat. Nanotech. (2007) 2, 95 Nature Nanotec 11, 706–712 (2016) Racks & pinions Nature Nanotech 8, 46–51 (2013) Nat. Mater. (2007) 6, 30 André Gourdon Brno, April 2017

15 Today and tomorrow, on nanocar-race.cnrs.fr
Toulouse, th April 2017 André Gourdon Brno, April 2017

16 Nano-dragster (Swiss team)
André Gourdon Brno, April 2017

17 2 of the pilots Some molecular cars In competition Race rules
One section of the gold Au(111) surface per team The track is 20nm+1 turn+50nm+1 turn+20nm Maximum 38 hours of racing Maximum 6h to clean the track before the race starts No tip changes for 38 hours Pushing the NanoCar is not allowed Authorization to change the NanoCar 4-probe LT-UHV-STM Omicron – 4 tracks in parallel 2 of the pilots Some molecular cars In competition Image resolution 2 picometers André Gourdon Brno, April 2017

18 The French nanocar André Gourdon Brno, 26-28 April 2017
5 + 5 steps global yield 0,56% The team leader and machine design : Pr. Gwénaël Rapenne Technical director : Dr. Claire Kammerer The team driver : Dr. Corentin Durand The team co-driver : Dr Sébastien Gauthier André Gourdon Brno, April 2017

19 Thank you for your attention
André Gourdon Brno, April 2017

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