All opportunities

Offers : 97

Automatic circuit instrumentation for the design of reliable systems

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Start date : 1 September 2020

offer n° SL-DRT-20-0901

Fault tolerant circuits are currently required in several major application sectors and are going to be mandatory in future domains like autonomous vehicles. CAD tools are required to automate the insertion of fault tolerant mechanisms and validate the reliability properties of the circuit. Fault injection emerged as a widely accepted solution for the qualification plan of a design but with various challenges. In particular, the fault propagation analysis is not enough accurate or involves too much overhead in terms of computation time.

The aim of the thesis is the implementation of a CAD tool for the automatic instrumentation of integrated circuits for an efficient fault propagation analysis after fault injection. The instrumentation modifies the circuit by inserting pieces of hardware to provide external controllability and observability of fault effects. Besides fault propagation analysis, the circuit instrumentation allows performing fault detection and error correction during system operation. The candidate must have experience in the design of embedded systems and knowledge of circuit reliability.

  • Keywords : Technological challenges, Emerging materials and processes for nanotechnologies and microelectronics, New computing paradigms, circuits and technologies, incl. quantum, DACLE, Leti
  • Laboratory : DACLE / Leti
  • CEA code : SL-DRT-20-0901
  • Contact : chiara.sandionigi@cea.fr

Study and reliability of a hybrid capacitor technology

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Start date : 1 September 2020

offer n° SL-DRT-20-1073

The purpose of this thesis is to optimize / stabilize the process for producing hybrid capacities, presenting a combination of unique properties in terms of energy density (ion storage density of the order of 43mJ / mm3) and frequency response (electrostatic mode demonstrated up to 30GHz, in 3D nanoporous structures available in 8 “technologies). The main technological bottlenecks identified are:

– integration steps of the hybrid MIM (Metal Isolant Metal) structure deposited by ALD on wafers comprising 3D nano-structures with very large developed surface, including the related lithography operations,

– electrical modeling of the component properties, in particular under relevant conditions of use (large current / voltage signals and frequency coverage),

– the identification of the component failure modes, the definition and demonstration of techniques for accelerating aging and the extraction of the related lifespan models.

  • Keywords : Engineering sciences, Technological challenges, Electronics and microelectronics - Optoelectronics, Emerging materials and processes for nanotechnologies and microelectronics, DCOS, Leti
  • Laboratory : DCOS / Leti
  • CEA code : SL-DRT-20-1073
  • Contact : sami.oukassi@cea.fr

Integrated Bioelectrodes and Biopolymer-Microneedle Devices for Transdermal Electrochemical Sensing

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Start date : 1 October 2020

offer n° SL-DRT-20-0673

Electrochemical sensors have attracted considerable interest owing to their tremendous promise for portable and rapid monitoring of personal health. Current devices are limited to single analyte detection (mostly glucose) in biofluids over short times using invasive sample collection. In this PhD, we propose to combine electro-enzymatic sensor technology with less-invasive, painless microneedle (MN)-based sampling for rapid detection of different biomarkers (e.g. glucose and nitrate) in interstitial fluid. The goal is to establish a sensitive and convenient platform for analyte detection for better metabolic profiling of diabetes and cardiovascular disease. This PhD project will explore the use of hydrogel-forming microneedles (e.g. saccharide-based) coupled with single/dual bioelectrode systems for signal transduction. The mechanical, structural and sensor properties will be characterised and optimised. Toxicity and in-vivo assays will be performed on rodents with first device prototypes. The PhD. Work will be carried out at DTBS CEA Grenoble in collaboration with Dr. Gross from Dpt. Of Molecular Chemistry (UGA). The applicant should hold a Master degree in Chemistry, with focus on polymer chemistry, biomaterials, or electrochemistry.

  • Keywords : Technological challenges, Health and environment technologies, medical devices, DTBS, Leti
  • Laboratory : DTBS / Leti
  • CEA code : SL-DRT-20-0673
  • Contact : isabelle.texier-nogues@cea.fr

Waveguide adressing architecture for retinal projection display integration

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Start date : 1 October 2020

offer n° SL-DRT-20-0837

CEA Tech Leti is involved for several years in the development of an original concept of optical device for Augmented Reality applications. This retinal projection display concept is based on advanced technological process: SiN waveguide photonics and holographic printers. The PhD is dedicated to the first technology and concern the design of addressing waveguide architecture. It will be done in continuity of a former ending PhD on the design of dense waveguide networks in the visible range. This network, that has to interact with pixelated holograms, has to be addressed by an array of optical emitters. The PhD student will simulate and develop the waveguide multi-level architecture needed to link the emitters (LED, VCESL, laser array) to the waveguides network. He will also follow the technological steps in the clean room and bring the device characterization. The Phd will end by the conception and realization of a prototype demonstrating the interaction between an optical emitter array and a digital hologram through a waveguide network.

  • Keywords : Engineering sciences, Technological challenges, Optics - Laser optics - Applied optics, Photonics, Imaging and displays, DOPT, Leti
  • Laboratory : DOPT / Leti
  • CEA code : SL-DRT-20-0837
  • Contact : christophe.martinez@cea.fr

Brillouin microspectroscopy for 3D cell microculture

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Start date : 1 October 2019

offer n° SL-DRT-20-0835

3D cell cultures are in-vitro models that are increasingly used for fundamental research, as well as for novel clinical and therapeutic applications. There is evidence that the biomechanical properties of these cellular structures are intricately linked with physiological parameters such as viability, fonctionality and response to treatment for instance. Brillouin Light Scattering Microscopy (µBLS) is an emerging technique in bioimaging for measuring the viscoelastic properties at the micrometer scale. It relies on the analysis of the light inelastically scattered by the phonons propagating in the medium, in the Brillouin scattering process. The goal of this PhD thesis is to develop an innovative µBLS system for the monitoring of 3D microcultures, and go towards the proof of concept that the mechanical properties measured in BLS may be used to infer the physiological parameters of interest. The PhD student will work on a custom state of the art µBLS instrument built in the Laboratory for bioimaging systems (LSIV), at CEA Leti in Grenoble, France, and will experiment with several types of 3D cultures, to demonstrate the capabilities of this new approach. Candidates with a strong background in optics, biophysics, experimental physics, or electrical engineering, and who are keen of biomedical application of technology are encouraged to apply.

  • Keywords : Technological challenges, Cyber physical systems - sensors and actuators, Health and environment technologies, medical devices, DTBS, Leti
  • Laboratory : DTBS / Leti
  • CEA code : SL-DRT-20-0835
  • Contact : jean-charles.baritaux@cea.fr
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