Silicon Nanoelectronics Photonics and Structures
SiNaPS - Head: Emmanuel HADJI

The SiNaPS laboratory investigates the new physical phenomena appearing when silicon is down-sized to the nanometer scale. Our aim is to unveil new devices based on the understanding of those phenomena and to explore their future applications. Therefore, SiNaPS research span from material growth and nanotechnology to characterization of nanostructure electronic/structural/optical properties, up to prototype nanodevices fabrication.

Our effort is tightly focused on two fields : the physics of silicon and germanium based nanostructures (i.e. nanowires, quantum boxes and nanostructured GeMn alloys) and the optics of wavelength-scale optical microstructures namely photonic crystals and microcavities.




Current research axes


Among the main achievements are, in the field of group IV nanostructures, the growth of sub-5 nm diameter crystalline Si and Ge nanowires, the growth of nanostructured (branched) silicon nanowires, the nanofabrication of porous alumina templates, the growth of nanostructured GeMn alloys containing a high Tc (>400 K) ferromagnetic phase. At the frontier of electronics and optics, we studied the mechanisms of carrier recombination and light emission in silicon-on-insulator (SOI) thin films where we demonstrated the Fermi-Dirac condensation of excitons into a metallic liquid. In the field of nanophotonics, we evidenced the potential of SOI microcavities and photonic crystal structures to control the radiation diagram of photons. We also demonstrated strong (2 orders of magnitude) light extraction enhancement by low group velocity SOI photonic crystals. Finally, we applied our effort to the quest for ultra strong light confinement in high Q nanocavities (Q > 60.000 for V = 0.6(l/n)3 achieved) and to the fabrication of rare-earth (Er) functionalized toroidal whispery gallery mode microresonators for future on chip light generation.

In the reporting period, the laboratory as also launched the virtual laboratory SiNOPTIQ with the Institut Carnot de Bourgogne to pursue research in the field of near-field nanophotonics. At the same time we started, in association with the Laboratoire des Technologies de la Microélectronique, the NanoS platform dedicated to the synthesis of nanostructures and to their assembly into nanodevices.




Research tools, methods


The laboratory operates one MBE and one CVD chamber for the epitaxy of group-IV nanostructures, plus a vacuum e-beam deposition chamber dedicated to the deposition of oxide and metal films. The structural characterization is based on a low temperature STM with in-situ growth capabilities, SEM and TEM equipments located on the Nanocharacterization Platform (PFNC) within Minatec, as well as X-Ray diffraction techniques at the nearby located European Synchrotron Radiation Facility. For nanofabrication, the laboratory makes an intensive use of the Plateforme Technologique Amont (PTA) and also runs close collaborations with CEA and CNRS teams operating at Léti facilities. Along the years, the laboratory has intensively developed spectroscopic characterization tools such as : life time measurements and low temperature spectroscopy, spatially-resolved spectroscopy at the micron scale, wave-guided spectroscopy and also optical near-field microscopy.

















The laboratory is now a team of 25 people located on the Minatec Center.


permanent staff


graduate students

André Barski

Denis Buttard

Vincent Calvo

Thomas Charvolin

Eric Delamadeleine

Pascal Gentile

Emmanuel Hadji

Jean-Baptiste Jager

Nicolas Pauc

Emmanuel Picard

Alban Gassenq

Dimitri Tainoff


Mustapha Boukhari

Olivier Marconot

Shashank Mathur

Dhruv Singhal

Manon Tardif



More from SiNaPS team ...







Dr. Emmanuel HADJI

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Last update : 10/14 2016 (152)



More ...


Contact : Emmanuel PICARD
The distribution of the electromagnetic field is an essential input for the design and development of new photonic structures. The classical near-field microscopy tools (SNOM, PSTM ..) allow to obtain this information experimentally. This type of scanning probe microscopy is mainly based on a point ... More »
Researchers from CNRS, CEA, Paris-Sud University and Joseph Fourier University have developed a new process for producing light emitting diodes (LED) flexible. These researchers have produced the first green nanowires-based flexible LED in the world and the first multilayer system combining blue ... More »
Contact : Vincent Calvo
Light sources fully integrated into microelectronics technology are the missing stones of silicon photonics. Silicon, as well as germanium, are not well suited for light emission in their natural form, due to the indirect nature of their bandgap. In the case of Ge, this limitation can potentially ... More »
Georgiana Irina Groza, a post-doc fellow currently working at the PTA in the frame of a  large collaboration involving CEA-IRFU/CNRS-LPN/CNRS-IAS, and former PhD at the Nanostructure and Magnetism lab, has been awarded the NanoART monthly prize in February 2014.   NanoART is a Nano ... More »
Contact : Nicoals Pauc
Kevin Guilloy, a first year PhD student at SiNaPS lab, has been awarded the NanoART monthly prize in January 2014.   NanoART is a Nano Imagery contest sponsored by nRai®, and organized in Grenoble by the Nanoscience Foundation.   Website for submission: ... More »
Contact : Denis Buttard
Ludovic Dupré, who defended his PhD thesis in Octobre 2013, after his doctoral stay at SiNaPS lab, was first awarded at the monthly contest in March 2013. He is now awarded the second prize at the annual contest, amounted to US$ 3000, for the micrograph reproduced here.   NanoART ... More »
Contact : Gerard Bidan
  Whereas batteries provide energy over several hours, supercapacitors deliver energy peaks in seconds, and provide strong power. Balancing energy and power under constrained volumes is the key challenge for the growth of many industrial applications including the electric vehicle where ... More »
Contact : Nicolas Pauc, Arnaud Morin (Liten), Samuele Galbiati (Liten)
Paste a stack of platinum nanotubes on proton exchange membrane of a fuel cell is the feat achieved through the joint efforts of researchers from INAC and LITEN. A preliminary assessment including tests under operating conditions of the battery reveals the potential of this new ... More »
Contact : Emmanuel Picard
Today microelectronics techniques allow the combination of optics and microfluidics on the same chip to handle colloidal objects. The SiNaPS laboratory, in collaboration with the Near Field Optics Group of University of Burgundy and the Microelectronics Technologies Laboratory in Grenoble (LTM), ... More »


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