Jean-françois DAYEN

M. Jean-François DAYEN Maître de Conférences – UNISTRAIPCMS – Département Magnétisme des Objets NanoStructurés (DMONS)

Téléphone: +33 (0)3 88 10 72 56Fax: +33 (0)3 88 10 72 49 Courriel:

Techniques :

Nanofabrication in StNano clean room.
Optical lithography.
Electronic lithography.
Low temperature electrical measurements (1.5K to 300K, 9 Tesla).
Electrochemistry, Template synthesis, drop casting, optically triggered self assembly process.
Focus Ion Beam.

Research Interests :

I explore new strategies to build useful functional devices based on nanostructures and new materials– and in the meanwhile to contribute to a better understanding of the physical properties of these new systems.

The research is mostly conducted within the Nano-Devices Team.

Research interests :

Electronic & Spintronic properties of graphene and related 2D systems
Electronic, Spintronic & Optoelectronic properties of hybrid molecular-nanoparticle-networks
Electronic and Magnetic properties of nanostructures and nanocrystals (0D, 1D, 2D)
Electronic and spintronic properties of organic materials
Nanofabrication

Since 2015, J.F. Dayen joined the Observatoire des Micro et Nanotechnologies (OMNT), with as a Domaine of expertise: Nanoelectronics and Spintronics.

Selected Publications (by topic):

Nanoelectronics (0D nanoparticle, 1D nanowire, 2D nanoplatelets)

• Anisotropic Magneto‐Coulomb Properties of 2D–0D Heterostructure Single Electron Device
Louis Donald Notemgnou Mouafo, Florian Godel, Georgian Melinte, Samar Hajjar‐ Garreau, Hicham Majjad, Bruno Dlubak, Ovidiu Ersen, Bernard Doudin, Laurent Simon, Pierre Seneor* and Jean‐Francois Dayen*.
Advanced Materials, 1802478 (2018)

• Surface-driven magnetotransport in perovskite nanocrystals
Ha Le Thi N’Goc, L.D.N. Mouafo (…), David Portehault
Advanced Materials, (in press) | DOI : 10.1002/adma.201604745
• Phototransport in colloidal nanoplatelets array
E Lhuillier, JF Dayen, DO Thomas, A Robin, S Ithurria, H Aubin, B. Dubertret
Physica status solidi (c) DOI: 10.1002/pssc.201510165 (2016)
•Selective Nanotrench Filling by One-Pot Electroclick Self-Constructed Nanoparticle Films
Gaulthier Rydzek et al.,
Small. (early view 2015). doi: 10.1002/smll.201500639
• Spin Transition in Arrays of Gold Nanoparticles and Spin Crossover Molecules
Edwin J. Devid et al. ,
ACS Nano, 2015, 9, 4496 (2015). DOI: 10.1021/acsnano.5b01103
• Nanoplatelets bridging a Nanotrench: a new architecture for photodetectors with increased sensitivity.
E. Lhuillier*, J.F. Dayen*, D. Thomas, A. Robin, B. Doudin, B. Dubertret*.
Nano Letters, 15, 1736 (2015). DOI: 10.1021/nl504414g (February 4, 2015)
• The influence of molecular mobility on the properties of networks of gold nanoparticles and organic ligands
E.J. Devid, (…) J.-F. Dayen, T.E. Keyes, B. Doudin, M. Ruben, S.J. van der Molen
Beilstein J. Nanotechnol., 5, 1664–1674 (2014)
• Enhancing the Molecular Signature in Molecule-Nanoparticle Networks Via Inelastic Cotunneling.
J.-F. Dayen, E. Devid, M.V. Kamalakar, D. Golubev, C. Guédon, V. Faramarzi, B. Doudin, S.J. van der Molen
Advanced Materials, 25: 400–404. (2013)
• Co-tunneling Enhancement of the Electrical Response of Nanoparticle Networks.
M. Pauly, J.-F. Dayen*, D. Golubev, J.-B. Beaufrand, B. P. Pichon, B. Doudin*, S. Bégin-Colin.
Small, 8, 108–115 (2012).
• Magnetoresistance signature of resonant states in electromigrated Ni nanocontacts.
J.-B. Beaufrand, J.-F. Dayen, N. T. Kemp, A. Sokolov, and B. Doudin.
Appl. Phys. Lett. ,98, 142504 (2011).
• Heteronanojunctions with atomic size control using a lab-on-chip electrochemical approach with integrated microfluidics.
P. Lunca Popa, G. Dalmas, V. Faramarzi, J.F. Dayen, H. Majjad, N.T. Kemp, B. Doudin.
Nanotechnology, 22, 215302 (2011).
• Nanotrench for nano and microparticle electrical interconnects.
J-F Dayen*, V Faramarzi, M Pauly, N T Kemp, M Barbero, B P Pichon, H Majjad, S Begin-Colin and B Doudin.
Nanotechnology, 21, 335303 (2010).
• Conductance of disordered semiconducting nanowires and carbon nanotubes : a chain of quantum dots.
J.-F. Dayen, T.-L. Wade, (…) C.S. Cojocaru, D. Pribat, X. Jehl, M. Sanquer, J.-E. Wegrowe.
The European Physical Journal Applied Physic, 48, 10604 (2009).
• Nanoporous alumina wire templates for surrounding-gate nanowire transistors.
T.-L. Wade, X. Hoffer, A.D. Mohammed, J.-F. Dayen, J.E. Wegrowe, D. Pribat.
Nanotechnology, 18, 125201 (2007).
• Electronic transport of silicon nanowires grown in porous Al2O3 membrane.
J.-F. Dayen*, A. Rumyantseva, C. Ciornei, T.L Wade, C.-S. Cojocaru, D. Pribat, et J.-E. Wegrowe*.
Applied Physics Letter, 90, 173110 (2007).
• Anisotropic magnetothermopower : Contribution of interband relaxation.
J.-E. Wegrowe, Q.A. Nguyen, M.Al-Barki, J.-F. Dayen, T.L. Wade, et H.J.Drouhin
Physical Review B., 73, 134422 (2006).

Carbon based devices (Graphene, Nanotubes)

•Conductance Oscillations in a Graphene/Nanocluster Hybrid Material: Toward Large-Area Single-Electron Devices
Florian Godel, Louis Donald Notemgnou Mouafo, (…) Yves Henry, Jean-François Dayen* and David Halley*
Version of Record online: 21 NOV 2016 | DOI: 10.1002/adma.201604837

•Spintronique à base de Graphène
Jean-Christophe le Breton & Jean-François Dayen
Micro et Nanotechnologies : Avancées, tendances et perspectives
février 2016, p 91-92.•

•Room temperature dry processing of patterned CVD graphene devices
A. Mahmood, C.-S. Yang, J.-F. Dayen, S. Park, M. Venkata Kamalakar, D. Metten, S. Berciaud, J.-O. Lee, B. Doudin.
Carbon, 86, 256-263 (2015)
•Voltage-controlled inversion of tunnel magnetoresistance in epitaxial Nickel/Graphene/MgO/Cobalt junctions
F. Godel, M. Venkata Kamalakar, B. Doudin, Y. Henry, D. Halley and J.F. Dayen*,
Appl. Phys. Lett. 105, 152407 (2014)
•Epitaxy of MgO magnetic tunnel barriers on epitaxial graphene
F. Godel, E. Pichonat, D.Vignaud, (…) J.F.Dayen and D. Halley.
Nanotechnology, 24, 475708 (2013)
•Conductance of disordered semiconducting nanowires and carbon nanotubes : a chain of quantum dots.
J.-F. Dayen, T.-L. Wade, (…) D. Pribat, X. Jehl, M. Sanquer, J.-E. Wegrowe.
The European Physical Journal Applied Physic, 48, 10604 (2009).
•Side-gated transport in focused-ion-beam-fabricated multilayered graphene nanoribbons.
J.-F. Dayen, A. Mahmood, Dmitry S. Golubev, I. Roch-Jeune, P. Salles, E. Dujardin.
Small, 4, 716-720 (2008).
•Transition from Coulomb blockade to insulator regime in multiwall carbon nanotubes.
J.-F. Dayen, X. Jehl, T.L. Wade, M. Sanquer, J.E. Wegrowe.
Phys. Stat. Sol.B., 243, 3413 (2006).
•Conductance in multiwall carbon nanotubes and semiconductor nanowires.
J.-F. Dayen, T. L. Wade, M. Konczykowski, X. Hoffer and J.-E. Wegrowe
Physical Review B, 72, 073402 (2005).

Organic & Molecular electronics

• Current crowding issues on nanoscale planar organic transistors for spintronics applications
Tindara Verduci, Guillaume Chaumy, Jean-Francois Dayen, Nicolas Leclerc, Eloïse Devaux, Marc-Antoine Stoeckel, Emanuele Orgiu, Paolo Samorì, Bernard Doudin
Nanotechnology, 29, 365201 (2018)

• High conductivity organic thin films for spintronics: the interface resistance bottleneck,
S. Zanettini, (…) J.F. Dayen and B. Doudin.
Journal of Physics: Condensed Matter, 27, 462001 (2015).
• Conductivity in organic semiconductors hybridized with the vacuum field
E. Orgiu (…) T.W Ebbesen
Nature Mater., 2015, in press.
• Spin Transition in Arrays of Gold Nanoparticles and Spin Crossover Molecules
Edwin J. Devid et al. , ACS Nano, Article ASAP, DOI: 10.1021/acsnano.5b01103 (2015)
• Magnetoconductance anisotropy of a polymer thin film at the onset of metallicity
S. Zanettini, J. F. Dayen, C. Etrillard, N. Leclerc, M. Venkata Kamalakar and B. Doudin
Appl. Phys. Lett. 106 , 063303 (2015) ; http://dx.doi.org/10.1063/1.4908526
• Enhancing the Molecular Signature in Molecule-Nanoparticle Networks Via Inelastic Cotunneling.
J.-F. Dayen, E. Devid, (…) V. Faramarzi, B. Doudin, S.J. van der Molen
Advanced Materials, 25: 400–404. (2013)
• Light triggered self-fabrication of supramolecular organic nanowires as metallic interconnects.
V.Faramarzi,F.Niess, (…) J.-F.Dayen, J.B. Beaufrand, S.Zanettini, B.Doudin, N.Giuseppone.
Nature Chemistry, 4,485–490 (2012)
• Resonance Raman Study of Spin-Crossover [Fe(Htrz)2(trz)](BF4)•H2O Particles Coated with Gold.
Y. A. Tobon, (…) J.-F. Dayen, B. Doudin, D.M. Bassani and F. Guillaume
Eur. J. Inorg. Chem., 35, 5837–5842 (2012).
• Photoconduction in [Fe(Htrz)(2)(trz)](BF(4))center dot H(2)O nanocrystals.
C. Etrillard, V. Faramarzi, J.-F. Dayen, J.-F. Letard and B. Doudin
Chem. Commun., 47, 9663-9665 (2011).

Patents and Book chapter

Patents :

•J. F. Letard, B. Doudin, C. Etrillard, V. Faramarzi, J.-F. Dayen (2011), “Dispositif photoconducteur et photovoltaïque “, Pending French patent FR 2011/11 50949.

•N. Giuseppone, B. Doudin, V. Faramarsi, J.F. Dayen, E. Moulin, F. Niess (2010). “Conduction électrique par des assemblages supramoléculaires de triarylamines“, French patent pending, F10 58954.

•N. Giuseppone, B. Doudin, V. Faramarsi, J.F. Dayen, E. Moulin, F. Niess (2010). ” Electrical conduction through supramolecular assemblies of triarylamins“, Provisional US US61/418645 0

Book :

•J.F. Dayen, V. Faramarzi, and B. Doudin, “Nanotrenches : a full optical lithography process for high aspect ratio nanogaps, in Micro and Nano Fabrication Technologies, in Vistas in Nanofabrication “, ed. Faiz Rahman, Pan Stanford Publications, Singapore (2011)

Selected Publications (by year):

2015-present

33. Anisotropic Magneto‐Coulomb Properties of 2D–0D Heterostructure Single Electron Device
Louis Donald Notemgnou Mouafo, Florian Godel, Georgian Melinte, Samar Hajjar‐ Garreau, Hicham Majjad, Bruno Dlubak, Ovidiu Ersen, Bernard Doudin, Laurent Simon, Pierre Seneor* and Jean‐Francois Dayen*.
Advanced Materials, 1802478 (2018)

32. Current crowding issues on nanoscale planar organic transistors for spintronics applications
Tindara Verduci, Guillaume Chaumy, Jean-Francois Dayen, Nicolas Leclerc, Eloïse Devaux, Marc-Antoine Stoeckel, Emanuele Orgiu, Paolo Samorì, Bernard Doudin
Nanotechnology, 29, 365201 (2018)

31. HgSe self-doped nanocrystals as a platform to investigate the effects of vanishing confinement
B Martinez, C Livache, LD Notemgnou Mouafo, (…) Jean-François Dayen, Emmanuel Lhuillier
ACS Applied Materials & Interfaces 9 , 36173 (2017)

30. Tuning a sign of magnetoelectric coupling in paramagnetic NH 2 (CH 3) 2 Al 1− x Cr x (SO 4) 2× 6H 2 O crystals by metal ion substitution
V Kapustianyk, Y Eliyashevskyy, Z Czapla, (…), B Kundys
Scientific reports 7 , 14109 (2017)

29. Tuning contact transport mechanisms in bilayer MoSe2 transistors up to the Fowler-Nordheim regime
L.D.N Mouafo, F. Godel, G. Froehlicher, S. Berciaud, B. Doudin, M. Venkata Kamalakar* and J.F. Dayen*
2D Materials, 4 (1), 015037 (2017).

28. Conductance Oscillations in a Graphene/Nanocluster Hybrid Material: Toward Large-Area Single-Electron Devices
Florian Godel, Louis Donald Notemgnou Mouafo, (…) Yves Henry, Jean-François Dayen* and David Halley*
Advanced Materials, Volume 29, Issue 3, 1604837 (2017)

27. Surface-driven magnetotransport in perovskite nanocrystals
Ha Le Thi N’Goc, L.D.N. Mouafo (…), David Portehault
Advanced Materials, (in press) | DOI : 10.1002/adma.201604745

26. Spintronique à base de Graphène
Jean-Christophe le Breton & Jean-François Dayen
Micro et Nanotechnologies : Avancées, tendances et perspectives
février 2016, p 91-92.

25. Phototransport in colloidal nanoplatelets array
E Lhuillier, JF Dayen, DO Thomas, A Robin, S Ithurria, H Aubin, B. Dubertret
Physica status solidi (c) DOI: 10.1002/pssc.201510165 (2016)

25. High conductivity organic thin films for spintronics: the interface resistance bottleneck,
S. Zanettini, (…) J.F. Dayen and B. Doudin.
Journal of Physics: Condensed Matter, 27, 462001 (2015).

24. Conductivity in organic semiconductors hybridized with the vacuum field,
E. Orgiu, (…), T.W. Ebbesen
Nature Mater., 2015, in press. Highlighted in News and Views.

23. Selective Nanotrench Filling by One-Pot Electroclick Self-Constructed Nanoparticle Films
G. Rydzek, (…) F. Boulmedais
Small., 11, 4638 (2015)

22. Spin Transition in Arrays of Gold Nanoparticles and Spin Crossover Molecules
Edwin J. Devid (…) S.J. van der Molen
ACS Nano, 2015, 9, 4496 (2015).

21. Magnetoconductance anisotropy of a polymer thin film at the onset of metallicity
S. Zanettini, J. F. Dayen, (…) B. Doudin
Appl. Phys. Lett. 106 , 063303 (2015).

20. Nanoplatelets bridging a Nanotrench: a new architecture for photodetectors with increased sensitivity.
E. Lhuillier*, J.F. Dayen*, D. Thomas, A. Robin, B. Doudin, B. Dubertret*.
Nano Letters, 15, 1736 (2015). DOI: 10.1021/nl504414g (February 4, 2015)

19. Room temperature dry processing of patterned CVD graphene devices
A. Mahmood, C.-S. Yang, J.-F. Dayen, (…) J.-O. Lee and B. Doudin.
Carbon, 86, 256-263 (2015)

2010-2014

18. Voltage-controlled inversion of tunnel magnetoresistance in epitaxial Nickel/Graphene/MgO/Cobalt junctions
F. Godel, M. Venkata Kamalakar, B. Doudin, Y. Henry, D. Halley* and J.F. Dayen*,
Appl. Phys. Lett. 105, 152407 (2014)

17. The influence of molecular mobility on the properties of networks of gold nanoparticles and organic ligands
E.J. Devid, […] J.-F. Dayen, T.E. Keyes, B. Doudin, M. Ruben, S.J. van der Molen
Beilstein J. Nanotechnol., 5, 1664–1674 (2014)

16. Epitaxy of MgO magnetic tunnel barriers on epitaxial graphene
F. Godel, E. Pichonat, D.Vignaud, H. Majjad, D.Metten, Y. Henry, S.Berciaud, J.F.Dayen and D. Halley.
Nanotechnology, 24, 475708 (2013)

15. Enhancing the Molecular Signature in Molecule-Nanoparticle Networks Via Inelastic Cotunneling.
J.-F. Dayen, E. Devid, M.V. Kamalakar, D. Golubev, C. Guédon, V. Faramarzi, B. Doudin, S.J. van der Molen
Advanced Materials, 25: 400–404. (2013)

14. Light triggered self-fabrication of supramolecular organic nanowires as metallic interconnects.
V.Faramarzi, F.Niess, E.Moulin, M.Maaloum, J.-F.Dayen, J.B. Beaufrand, S.Zanettini, B.Doudin, N.Giuseppone.
Nature Chemistry, 4,485–490 (2012)

13. Co-tunneling Enhancement of the Electrical Response of Nanoparticle Networks.
M. Pauly, J.-F. Dayen*, D. Golubev, J.-B. Beaufrand, B. P. Pichon, B. Doudin*, S. Bégin-Colin.
Small, 8, 108–115 (2012).

12. Resonance Raman Study of Spin-Crossover [Fe(Htrz)2(trz)](BF4)·H2O Particles Coated with Gold.
Y. A. Tobon, C. Etrillard, O. Nguyen, J.-F. Létard, V. Faramarzi, J.-F. Dayen, B. Doudin, D.M. Bassani and F. Guillaume
Eur. J. Inorg. Chem., 35, 5837–5842 (2012).

11. Magnetoresistance signature of resonant states in electromigrated Ni nanocontacts.
J.-B. Beaufrand, J.-F. Dayen, N. T. Kemp, A. Sokolov, and B. Doudin.
Appl. Phys. Lett. ,98, 142504 (2011).

10. Heteronanojunctions with atomic size control using a lab-on-chip electrochemical approach with integrated microfluidics.
P. Lunca Popa, G. Dalmas, V. Faramarzi, J.F. Dayen, H. Majjad, N.T. Kemp, B. Doudin.
Nanotechnology, 22, 215302 (2011).

9. Photoconduction in [Fe(Htrz)(2)(trz)](BF(4))center dot H(2)O nanocrystals.
C. Etrillard, V. Faramarzi, J.-F. Dayen, J.-F. Letard and B. Doudin
Chem. Commun., 47, 9663-9665 (2011).

8. Nanotrench for nano and microparticle electrical interconnects.
J-F Dayen*, V Faramarzi, M Pauly, N T Kemp, M Barbero, B P Pichon, H Majjad, S Begin-Colin and B Doudin.
Nanotechnology, 21, 335303 (2010).

2005-2009

7. Conductance of disordered semiconducting nanowires and carbon nanotubes : a chain of quantum dots.
J.-F. Dayen, T.-L. Wade, G. Rizza, D.S. Golubev, C.S. Cojocaru, D. Pribat, X. Jehl, M. Sanquer, J.-E. Wegrowe.
The European Physical Journal Applied Physic, 48, 10604 (2009).

6. Side-gated transport in focused-ion-beam-fabricated multilayered graphene nanoribbons.
J.-F. Dayen, A. Mahmood, Dmitry S. Golubev, I. Roch-Jeune, P. Salles, E. Dujardin.
Small, 4, 716-720 (2008).

5. Nanoporous alumina wire templates for surrounding-gate nanowire transistors.
T.-L. Wade, X. Hoffer, A.D. Mohammed, J.-F. Dayen, J.E. Wegrowe, D. Pribat.
Nanotechnology, 18, 125201 (2007).

4. Electronic transport of silicon nanowires grown in porous Al2O3 membrane.
J.-F. Dayen*, A. Rumyantseva, C. Ciornei, T.L Wade, C.-S. Cojocaru, D. Pribat, et J.-E. Wegrowe.
Applied Physics Letter, 90, 173110 (2007).

3. Transition from Coulomb blockade to insulator regime in multiwall carbon nanotubes.
J.-F. Dayen, X. Jehl, T.L. Wade, M. Sanquer, J.E. Wegrowe.
Phys. Stat. Sol.B., 243, 3413 (2006).

2. Anisotropic magnetothermopower : Contribution of interband relaxation.
J.-E. Wegrowe, Q.A. Nguyen, M.Al-Barki, J.-F. Dayen, T.L. Wade, et H.J.Drouhin
Physical Review B., 73, 134422 (2006).

1. Conductance in multiwall carbon nanotubes and semiconductor nanowires.
J.-F. Dayen, T. L. Wade, M. Konczykowski, X. Hoffer and J.-E. Wegrowe
Physical Review B, 72, 073402 (2005).