25-04-2018
Contact : Vincent Renard
Individual stretching of graphene layers in a van der Waals stack drastically modifies the electronic properties of the whole structure. This results opens new possibilities for the strain-engineering of 2D materials. Summary : By stacking one-atom-thick sheets, like in a LEGO game, researchers ... More »
18-12-2017
Contact : Julia Meyer
Researchers from INAC/PHELIQS (CEA Grenoble) established the theory of the critical magnetic field for a novel class of two-dimensional superconductors with strong spin-orbit coupling. These materials have interesting properties for potential applications in spintronics. Transition metal ... More »
20-11-2017
Contact : Eva Monroy
Researchers at INAC-PHELIQS-NPSC have developed new approaches for the detection of ultraviolet/infrared light using single GaN nanowires. Results have led to the demonstration of the first photodetector-in-a-wire based on intersubband transitions, i.e. electron transitions within quantum-confined ... More »
15-11-2017
Contact : David Aradilla
Three different services, SyMMES, MEM and PhELIQS from INAC institute, have been working together during the last year and a half within the framework of a collaborative intern project dealing with nitrogen doped-vertically oriented graphene nanosheets (N-VOGNs) for supercapacitor applications. The ... More »
18-10-2017
Integration of charge sensors for the readout of semiconductor quantum bits (qubits) is required for a realistic realization of scalable quantum computer. Such charge-sensitive devices, however, involve a significant overhead in terms of gates and contact leads, posing an issue for scalability ... More »
13-10-2017
In the context of the study of the interplay between magnetism and superconductivity, a phase transition has been evidenced as a function of magnetic field between two phases having identical magnetic symmetry. Since this effect cannot be magnetically driven, it implies a modification of the nature ... More »
29-08-2017
Contact : Julien Claudon
Researchers have succeeded in coupling a semiconductor quantum dot to a vibrating wire. The quantum dot is then able to detect the mechanical vibrations of the wire with very high sensitivity. This result, obtained within a collaboration between INAC and the University of Basel, opens new ... More »
28-06-2017
The development of sensitive and compact readout tools of quantum states is a central issue in the run to industrial scalability of semiconductor quantum bits (qubits). We employ the gates of industrial silicon Field-Effect Transistors (used as qubits) as radio-frequency resonators integrated in ... More »
24-05-2017
Several groups have already reported the fabrication of nanotubes, but such structures exhibit usually poor light emission performances. Indeed, the surface states and defects favor the non-radiative recombination processes that quench light emission. To overcome this problem, we have developed a ... More »
03-05-2017
Contact : Julien Claudon
A new class of optoelectronic devices, such as single-photon sources, is based on semiconductor quantum dots (QDs) embedded in a photonic structure. Nowadays, the best QDs are still obtained via a self-assembly process: these emitters are thus randomly located in the structure. Pinpointing the ... More »
12-04-2017
In a metal the energy levels of the electrons, which have to be all in different quantum states due to the Pauli exclusion principle, are filled up to the Fermi energy at zero temperature. The surface of constant energy in the reciprocal space separating occupied and unoccupied electronic states is ... More »
27-02-2017
Combined extreme conditions of high pressure and strong magnetic field are an extremely powerful tool to tune microscopic interactions in order to attain and study new states of matter. While high pressure measurements in static magnetic fields present no particular difficulty, the maximum static ... More »
02-02-2017
Moiré patterns are superlattice structures that appear when two crystals with a lattice mismatch or with a different orientation are superimposed. We have developed a universal classification of all possible periodic Moirés in order to determine their exact crystallographic ... More »
06-01-2017
Contact : Manon Tardif
We demonstrate the optical trapping of living objects with an integrated SOI microcavity and the discrimination of three different types of bacteria based on the analysis of the trapped bacterium interactions with the electromagnetic field of the cavity. Bacteria are an important subject of ... More »
02-12-2016
Leti and Inac received EARTO 2016 Innovation Awards for their new 3D LED. Offering a better price/performance ratio, this new technology will be commercialized by Aledia - a Leti spin-off. The EARTO Innovation Awards 2016 was presented in Brussels, Belgium, by Jyrki Katainen, European ... More »
30-11-2016
Leti, an institute of CEA Tech, along with Inac, a fundamental research division of CEA, and the University of Grenoble Alpes have achieved the first demonstration of a quantum-dot-based spin qubit using an industry-standard fabrication process. Published in the November 24 issue of Nature ... More »
31-08-2016
Contact : Julien CLAUDON
It has been shown in recent years that mechanical stress can be used to tune the electronic and optical properties of semiconductor quantum dots. For instance, this approach has been implemented to adjust finely the emission wavelength of quantum dot single photon sources. In view of real ... More »
30-08-2016
The Léon Brillouin Great Prize has been founded by the French Optical Society, with the support of the iXCore Research Foundation, to honor the memory of the great physicist Léon Brillouin, whose discoveries have deeply influenced the modern development of Optics. This prize, which is ... More »
07-06-2016
Researchers from INAC/PHELIQS (CEA Grenoble) and Kavli Institute of Nanoscience (TU Delft, Netherlands) have predicted the occurrence of topological transitions in multi-terminal Josephson junctions. The topology manifests itself in the trans-conductance between two voltage-biased terminals being ... More »
23-03-2016
Contact : Bruno Gayral
We have studied the growth and optical properties of AlGaN nanowires, a potential candidate for future ultraviolet light sources. We have evidenced that such structures behave as a collection of quantum dots due to short-scale composition fluctuations. Nanowires made of nitride semiconductors ... More »
19-02-2016
Contact : Romain Maurand
microelectronics industry has shrinked the size of transistors present in our computers and other electronic equipment, arriving to critical sizes on the order of ten nanometers. On the other hand academic researchers have developed a new paradigm for computing based on quantum physics for which ... More »
06-11-2015
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 »
04-11-2015
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 »
29-07-2015
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 »
03-02-2015
Contact : Marc Sanquer
Nanowire transistors in the sub10 nm range are subject to process variability. A main cause is the surface roughness of the nanowire. A single dopant centered in the channel can also modify the room temperature electrical characteristics of the transistor.  Both the surface roughness and a ... More »
06-06-2014
Atomically clean superconducting graphene has been grown on thin rhenium films. This breakthrough paves the way to new hybrid superconducting nanostructures.   Graphene is not an intrinsic superconductor but can become superconducting by proximity effect when it is intimately connected ... More »
14-04-2014
Contact : Julien Claudon
Julien Claudon, researcher at the "Nanophysique et semi-conducteurs" lab (CEA-CNRS joint unit) has been awarded the 2014 CNRS bronze medal, distinguishing the first work of a scientist which made him a talent specialist in his field. By this award, the CNRS encourages the pursuit of ... More »
25-03-2014
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 »
28-02-2014
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 »
29-01-2014
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 »

 

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