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PhD proposals

Etude théorique et expérimentale de l'intrication à grande dimension dans les algorithmeset les protocoles de communication quantiques

Depuis la publication des articles de Shor et Grover nous savons qu'il existe des algorithmes quantiques qui surclassent leurs homologues classiques. En particulier l'algorithme de Shor factorise en temps polynomial les grands nombres, ce qui a pour conséquence de casser le cryptosystème RSA sur lequel s'appuient beaucoup de système de sécurité informatique. Le phénomène quantique d'intrication, i.e. la possibilité que des parties (particules) distinctes d'un système soient corrélées au-delà des capacités classiques, est reconnue comme une des ressources centrales responsable des performances des algorithmes quantiques. Mais le rôle et la nature de cette intrication au cœur des algorithmes ou plus généralement au niveau des communications quantiques, sont encore mal compris. Récemment des études numériques ont été conduites sur des algorithmes particuliers mais cette approche ne fournit pas d'explication des phénomènes observés.On propose d'étudier dans cette thèse l'intrication présente dans les algorithmes quantiques à l'aide d'une modélisation géométrique de l'intrication dans les systèmes multipartites purs à quelques composants.

Contact :

Directeur
: JM. Merolla, CR1, HDR de l’Université de Franche-Comté
Co-encadrant (50%) : F. Holweck, Maître de Conférences, UTBM

Dossier à envoyer à Arnaud Marchant :
arnaud.marchant@utbm.fr
Tel : 03.84.58.35.44
Tous les dossiers incomplets seront refusés.

13 Early Stage Researchers in MSCN European Training Network “ENHANCE�?

The Initial Training Network entitled "Piezoelectric Energy Harvesters for Self-Powered Automotive Sensors: from Advanced Lead-Free Materials to Smart Systems (ENHANCE)" will provide thirteen Early Stage Researchers (ESRs) with broad and intensive training within a multidisciplinary research and teaching environment. Key training topics will include development of energy harvesters compatible with MEMS technology and able to power wireless sensor. Applied to automobiles, such technology will allow for 50 kg of weight saving, connection simplification, space reduction, and reduced maintenance costs - all major steps towards creating green vehicles. Other important topics include technology innovation, education and intellectual asset management.

Eligibility criteria

  • Master degree or equivalent degree which formally entitle to embark on a doctorate;
  • Must not have resided or carried out main activity (work, studies, etc) in the country of host organisation for more than 12 months in the last 3 years (short stays for holidays do not count);
  • Must be in the first four years of full-time equivalent research experience of their research careers (starting from the date when the degree enabling the access to the PhD studies was obtained)
  • Have not been awarded a doctoral degree

How to apply

In order to apply, send by email to project coordinator Ausrine Bartasyte, ausrine.bartasyte@univ-fcomte.fr
Applications should be submitted electronically before the 1st July 2017.

More information

https://euraxess.ec.europa.eu/jobs/209340

https://sites.google.com/a/itn-enhance.com/its-enhance-722496/home

Modeling, fabrication and experimental characterization of weakly coupled MEMS arrays for mass detection

The goal of the PhD is to investigate the potential of the mode localization effect in the field of mass detection. This work will thus include a part dealing with designing and modeling of a mass detector based on weakly coupled MEMS arrays. A second part of the work concerns the fabrication of the devices and their experimental characterization.

Keywords MEMS array, mode localization, mass detection

Contact Vincent Walter - 03 81 66 67 27 - vincent.walter@univ-fcomte.fr

Energy based modeling and distributed control of a compliant bio-medical system

The aim of this project is to propose new models and robust control laws for a compliant bio-medical system actuated through electroactive polymers by using the port Hamiltonian framework.

Objectives and time planing

This thesis has three main objectives:

Modeling:
First, to develop a reliable model of the electro-active polymer taking the multiphysical, non linear and distributed parameters properties into account. This work will be done based on the theoretical results proposed in [4] and adapted to the considered application case (nature of polymer, mechanical structure and environment). The experimental validation will be done using the experimental resources developed in our department.

Reduction:
Second, to propose a structure preserving reduction/discretization method and to apply it to this class of systems with control design perspectives [15]. The influence of the physical parameters on the system dynamics and the errors due to the reduction will be studied.
The characteristic and number of the actuators will be also investigated.

Control design:
Third, to design robust control laws using the reduced order model and taking the approximations due this reduction into account. An experimental set-up will be built in order to test the proposed control design methods.

Candidates profile
Excellent MSc/Engineer in Automatic Control.
Strong knowledge background in automatic control and applied mathematics.
Fluent in speaking and reading English.

Contact

Yann Le Gorrec (Supervisor), Professor, FEMTO-ST AS2M, UBFC Besançon legorrec@femto-st.fr
Yongxin Wu, Assistant Professor, FEMTO-ST AS2M, UBFC Besançon yongxin.wu@femto-st.fr

From trapped bulk-acoustic-wave cavities to optomechanics

The “Time and Frequency�? department of FEMTO-ST Institute proposes a PhD Position for three year which is available from October 2017. It aims to pursuit and reinforce recent investigations on bulk acoustic wave resonators at cryogenic temperature (typically 4 Kelvins).
The successful candidate will be involved in cutting edge physics experiments based on optomechanics, when designing a cryogenic oscillator. He will demonstrate strong skills in Physics, Electronic, Mechanical Engineering, and Optics.
Knowledge of French language would be appreciated but is not required. Nevertheless a good level in spoken and written English is obviously mandatory.

Contact : Serge Galliou

More informations (pdf, 45 Ko)

Supercontinuum broadband light sources covering UV to IR applications (SUPUVIR)

H-2020 Marie Sklodowska-Curie Innovative Training Networks

Within the framework of the European Marie Sklodowska -Curie Innovative Training Network SUPUVIR, the Department of Optics of the FEMTO-ST institute in France invites applications for a 3-years Ph.D scholarship in Fiber Photonics and Supercontinuum generation. This project aims at investigating the remarkable properties of new silica-based and ZBLAN highly-nonlinear optical fibers in view of applications to supercontinuum (SC) generation in the ultraviolet (UV) and visible. The successful applicant will have the opportunities to be train to numerical modelling and experiment with lasers and SC sources and to collaborate with several academic and industrial partners in Europe.
The candidate should have a master degree in Physics, preferably research experience in the field of Optics and Photonics. Each application should consist of the curriculum vitae including a list of publications, mark lists, Master thesis, names and addresses of referees, and a letter of motivation. (please send to : thibaut.sylvestre@univ-fcomte.fr )

Contacts
Thibaut Sylvestre, CNRS Researcher, thibaut.sylvestre@univ-fcomte.fr
Professor John M. Dudley : john.dudley@univ-fcomte.fr

Highly accurate robotic micro-assembly based on smart gripping

The objective of the proposed PhD thesis will be to study innovative technical, modelling and control aspects to successfully achieve complex micro-assembly tasks with extremely high accuracy in automated and semi-automated modes. Unpreceded performances are expected based on original multi-physical modelling associated with control. Many microscale specifies will induce key open challenges such as very high dynamics, few measurement feedback, sticking like effects at contacts, non-linear and varying behaviours…

To apply, please send a detailed CV, motivation letter dedicated to the proposed topic, marks and ranks obtained during the last 2 years to Cédric CLEVY cclevy@femto-st.fr

Arrays of resonant MEMS of mechanically coupled membranes-type: application to biological molecules detection and quantification in a liquid

Context
The final goal of the project is the detection, then the quantification of specific molecules such as pathogenic bacteria or trace amounts of proteins in a biological liquid (plasma, blood) for an early diagnosis of a disease or to follow the evolution of a therapy. This work is carried out with the University of Sherbrooke and the international joint unit LN2 (Canada).

Project description
The goal of the PhD is to investigate the potential of the mode localization effect in the field of tiny mass detection in a liquid. This work will thus include a part dealing with designing and modeling of a mass detector based on weakly coupled membrane arrays. In this part, innovative architectures will be designed to achieve a mechanical coupling of elementary membranes and to evaluate the interaction with the fluid. A second part of the work concerns the fabrication of the devices and their experimental characterization.

The deadline for applications is 30 June 2016.

Contact:
Thérèse Leblois – 03 63 08 24 56 – therese.leblois@univ-fcomte.fr
Vincent Walter - 03 81 66 67 27 - vincent.walter@univ-fcomte.fr

Decision oriented prognostics approach

During the last decade, a lot of works were done in the PHM (Prognostics and Health Management) domain. Most of published works are focused on the prognostics step. The main goal of prognostics is to determine the remaining useful life (RUL) of a component or a system.
It seems more and more evident that prognostics phase is not an end in itself. It should provides pertinent information in order to decide the best action to perform. This is absolutely necessary to maintain the performance level of a system.

However, the prognostics and decision steps are always considered as independent. Indeed, the effciency and accuracy of prognostics are influenced by future operational conditions of the system are known. Considering coming solicitations is a necessity for the prognostics.

The objective of the thesis is to optimize the "iterative" interaction between prognostics and decision steps. One orientation is to use multi criteria optimization approaches.

Supervisors : Christophe Varnier and Noureddine Zerhouni


Implementation of Neuromorphic computing in Quantum Dot emitter networks

We are looking for two highly motivated PhD students for a project in the area of functional micro and nanophotonics. Interested candidates should have a strong experimental background in semiconductor and / or freespace optics. The PhD positions are part of an international project with partners at the TU Berlin (Germany), femto-st (UFC) Besancon (France), and the IFISC (UIB) Palma de Mallorca (Spain). Funding for 3 years is provided via the Volkswagen Foundation under the NeuroQNet project.

Dr. Daniel Brunner (femto-st): daniel.brunner@femto-st.fr
Or
Prof. Ingo Fischer (IFISC): ingo@ifisc.uib-csic.es

Modeling, fabrication and experimental characterization of weakly coupled MEMS arrays for mass detection

Project description
The goal of the PhD is to investigate the potential of the mode localization effect in the field of mass detection. This work will thus include a part dealing with designing and modeling of a mass detector based on weakly coupled MEMS arrays. A second part of the work concerns the fabrication of the devices and their experimental characterization...

Time span: 3 years starting from October or November 2016
Field of research: Engineering science
Keywords: MEMS array, mode localization, mass detection
Salary: 1 365 euros net/month (grant from the public department of education)

Contact:
Vincent Walter - 03 81 66 67 27 - vincent.walter@univ-fcomte.fr

Development of a high-performance Cs vapor cell atomic clock based on coherent population trapping. Spectroscopy and comparison of buffer-gas filled and/or wall coated Cs vapor cells

Context & Objectives
In FEMTO-ST, we develop in the frame of the MClocks project a high-performance Cs vapor cell atomic clock based on coherent population trapping (CPT). Using the current setup, some keyissues were identified and several improvements could be proposed to further improve the clock performances. The current thesis subject aims to propose a new clock architecture version with high-performances objectives. This
clock will be used to perform high-resolution spectroscopy characterization of buffer gas and wall coatings used in vapor cells realized by the candidate with help of LNE-SYRTE, Observatoire de Paris.

PhD Candidate profile:
- Scientific rigour and high motivation.
- Autonomous but well-adapted to work with colleagues and partners.
- Loves experimental physics (the student will work with optics, electronics, mechanics, ultra-high vacuum...)
- Correct English appreciated.

PhD start date deadline: December 2015

Contact : Rodolphe Boudot

More informations (pdf, 60 Ko)

Smart Boundary Control of VibroAcoustic and Elastodynamic Systems

The aim of the thesis is to propose passivity based control strategies for the acoustic or elastic wave attenuation at the output of 2D and 3D acoustic systems

Contact

Yann Le Gorrec, Professor, yann.le.gorrec@ens2m.fr
Hector Ramirez, Associated professor, hector.ramirez@femto-st.fr

Study and development of a multimodal micromechanical / optical device for the maturity characterization of human oocytes.

Context

A PhD studentship is available as a part of the French regional project MICROBE: “from tissues to microparticles: multi-scales characterization and qualification of biological systems�?. The studentship will start between October 1st, 2013 and January 1st, 2014. The student will be based in two departments of the FEMTO-ST Institute:
- AS2M Department / SPECIMeN group ;
- Optics Department / Biophotonic group ;
A collaborative partnership will also be done with the Medically Assisted Procreation Unit of Besançon University Hospital.

Objective

The goal of this PhD position is to develop a new modular micromechanical / optical device to perform sequential multimodal maturity analysis based on mechanical and optical tests. This device should be compatible with physician’s protocols and constraints used in the ICSI (Intra cytoplasmic Sperm Injection) processing. The Integration of a low cost and high sensitive nanoforce sensor inside the device with the previous constraints is notably a complex and interesting challenge. Design based on magnetic springs will be privileged.

Requirements and contact

The PhD candidate will have a strong interest in micromechatronics and microsystems for optics and mechanical characterization; strong mathematical skills associated with mechanics, control theory and signal processing; normal programming skills (Matlab, C / C++); good written and spoken communication skills in French or English. The ideal candidate will be able to conduct theoretical researches, but also implement them in real devices. Applicants should send (preferably as a single PDF file):
• a CV,
• a brief statement of research interests,
• references (with email and phone number),
• their academic transcript (with rank if possible).

to:

Emmanuel piat – Associate Professor (femto-st / AS2M department) – PhD supervisor
emmanuel.piat@ens2m.fr
Bruno Wacogne – CNRS Research Director (femto-st / Optics department) – PhD supervisor
bruno.wacogne@univ-fcomte.fr

Collective dynamics and soliton-based waveguides in periodic nonlinear lattices for vibration energy harvesting applications

Context

One of the most popular localization phenomena, that have attracted the interest of physicists, is the nonlinear energy localization. Such localized energy excitations, called intrinsic localized modes ILMs, also known as “discrete breathers�? or “lattice solitons�? can occur in defect-free periodic nonlinear structures, extending over only a few sites. The remarkable property of solitons is their exceptional stability against disturbances. They are also able to occur spontaneously in a non-autonomous physical system even if the initial excitation does not exactly correspond to an ILM. Actually, if a system has characteristics that allow the existence of solitons, then an intense excitation will potentially lead to their creation. Therefore, solitons play a fundamental role in the properties of energy transport for a variety of fields such as optics, acoustics, and hydraulics.

Objective

The principal goal of this thesis consists in the functionalization of the localization phenomenon by modeling the collective dynamics of a vibrating energy harvester based on a periodic lattice of coupled nonlinear resonators. Particularly, we consider the case of mono-directional lattices of MEMS cantilevers having a geometric Von Kármán nonlinearity coupled linearly via the overhang and nonlinearly by the Van Der Pol nonlinear damping. Then, the model will be extended to the case of bi-directional lattices and specifically for periodic arrays of CMUT (capacitive micromachined ultrasonic transducers). The devices will be fabricated in the clean rooms of MIMENTO.

Candidates profile and application

The candidates should have a master degree in applied mechanics, physics or applied mathematics. They have to prove their relevant knowledge in the following disciplines: vibrations, nonlinear dynamics and advanced numerical methods. The candidate must perform extensive computer simulations and data analysis. A disposition for numerical work and programming is required. Proficiency in English is important.

The application consists of ONE pdf-file comprising:
- Curriculum Vitae with list of publications
- Short summary of the master's thesis
- Suggestion of two referees with contact details
- Provide detailed explanation justifying your choice for this PhD project

Contacts

Najib KACEM
Telephone: ( 33)381666702
najib.kacem@univ-fcomte.fr

Noureddine BOUHADDI
Telephone: ( 33)381666056
noureddine.bouhaddi@univ-fcomte.fr

Trapped bulk acoustic waves resonators at very low temperature: applications

We are looking for a young scientist highly motivated by physics measurements and experiments involving optoelectronics among others. Particularly relevant skills can include a background in Physics, Electronic and Mechanical Engineering, Optics. Knowledge of French language is not required but a good level in spoken and written English is mandatory.

Serge Galliou
serge.galliou@femto-st.fr
tel : 03 81 40 28 39

Qualitative and quantitative on�?chip analysis of circulating blood microparticles through combining SPRi and AFM approaches, and their functional studies on cells

Research work
Axis 1) Development of an analytic platform of microparticles: capturing, qualifying and dosing
biological nano�?objects in aqueous media of increasing complexity by combining approaches using
SPRi and AFM on biochip

Axis 2) Functional study of microparticles on human dendritic cells : evaluate the impact of these
micro�? or nano�?particles on cell biochips through combination of AFM and fluorescence imaging to
understand the action mode of these objects on immunity target cells ; characterization of MPs
cellular internalization ways.

Contact
Dr. Wilfrid Boireau
wboireau@femto-st.fr
tel. 0381853959

Dr. Céline Elie-Caille
caille@femto-st.fr
tél. 03818539222

CLEAR Project - CLock Ensemble Algorithm Research

Presentation
The CLEAR project aims at the development and implementation of an algorithm for the creation of
a composite clock of short and long term stability better than the ones of each constituing N clocks.

Recruitment
Automatism will prevail in the profile of the PhD student. A good knowledge in digital electronics
will be appreciated.
The candidate will work at the Observatory of Besançon (France) but will be in permanent contact
with TimeLink microsystems with frequent trips to Toulouse (France) in order to report his progresses.

Contact

In Toulouse :
Jean-Claude POUYTES
33-5 62 87 10 7
jcp@timelinkmicro.com

In Besançon :
François VERNOTTE
33-3 81 66 69 23
francois.vernotte@obs-besancon.fr

More information (pdf, 110 Ko)

Multi-asperity nanotribology in air and vacuum: development of new devices for friction and adhesion characterization, and for analysis of controlled triboactive surfaces.

Currently, friction and wear processes of small contact surfaces met in micro-mechanical devices (so-called MEMS) used in micro/nanorobotics are still largely misunderstood. Although the apex of the AFM is commonly used to simulate and study friction phenomena occuring in MEMS, it is generally admitted that the friction level and wear rate obtained with this approach – i.e. on the scale of a single asperity contact – have little to do with the ones obtained in a real microsystem or microgrippers. Indeed, a single asperity can not take into account the mutual interaction coming from all neighboring contacts (so-called real contact area) and, the comprehension of mechanisms that contribute to the overall view of friction is generally insufficient: that is, (i) the scale dependence of friction by varying the loading and the sliding velocity in large scales; (ii) the thermal effects, the physico-chemical interactions and the influence of the environment ; and finally, (iii) the formation of wear debris which usually controls friction and wear within the contact. In addition, the levels of contact pressure in that configuration are often much higher than real MEMS or grippers (several GPa instead of several tens or hundreds MPa) leading to study phenomena which can be completely different than those really occurring in current microsystems. So, the development of new devices suited for the characterization of multi-asperity tribological properties of surfaces is needed and, in this framework, this PhD position has two main objectives:
- experimental validation in air and controlled environment of a new tribometer based on the MEMS technology with piezoresistive beams. This latter is an advanced prototype whose development and qualification need to be achieved. This necessary final stage will be completed in close collaboration between Minamas (MN2S dept) and Specimen (AS2M dept) teams.
- Because nanorobotics is usually carried out in vacuum, a new equipment has to be developed in the experimental research environment provided by the new ROBOTEX Equipex (large vacuum chamber equipped with dual-beam FIB/SEM, multiple gas lines and micro/nano manipulators). The new equipment to develop is based on the design and the realization of new devices which should make possible:
(i) the measurement of the adhesion properties of the surfaces, and (ii) the tribological properties assessment in vacuum. Expected performances should be comprised into the actual gap that exists between AFM(mono-asperity friction characterization) and microtribometers (multi-asperity friction characterization).
This work will be done under the expertise of AS2M department in the field of mono and multi-DOF micro/nanoforce measurement with piezo resistive beams and magnetic springs.

Wished skills
Mechanical engineering, signal processing and mechatronics.
The candidate will be internally trained depending on his (her) initial skills.

Directors
Emmanuel Piat, Maître de conférences HDR, 33 3 81 40 27 95, emmanuel.piat@ens2m.fr
Philippe Stempflé, Maître de conférences, 33 3 81 40 28 57, philippe.stempfle@ens2m.fr

Optimization of the maintenance process through the monitoring of the equipment’s health condition during its life cycle

Subject :
The problematic to solve in this thesis is between two communities of study: the PHM (Prognostic and Health Management) which develops predictive maintenance strategies and the PLM (Product Life-cycle management) which studies the management of the life cycle of a product from its design to its recycling. One of the interests of this study is the recycling of components having reliable traceability of their health condition during their operating phase. The place of maintenance in the life cycle of a technical complex product and the sharing of the information about the product and the processes of its life cycle will be privileged to ensure also the sustainability of the product (equipment).

The objective of this study is from one hand to optimize the industrial process of maintenance and in the other hand to design and develop a solution allowing to elaborate and to capitalize the knowledge related to the health state of industrial equipment through its life cycle

The work requested in this thesis will be oriented according two axes: the first concerns the elaboration of a s-maintenance platform by considering the works of the PROMI team in the domain, and the second the development of services in the platform from the platform ontology, the gathered data and the expert knowledge related to the complex equipment

Thesis Manager :

B. CHEBEL MORELLO ; N. ZERHOUNI
FEMTO-ST/AS2M Department, PROMI research team



Contribution to process degradation modeling: application to failure prognostic

Description of the subject
The principle of data-driven prognostic relies on the transformation of the monitoring data provided by the sensors into behavioral models that best represent the degradation process. Among the tools which can be used to model the degradation, one can cite the probabilistic graphical models. Our objective in this thesis is to develop a probabilistic approach for modeling degradation processes of critical physical components, integrating explicit stay duration laws in the stochastic models and considering variable operating contexts.

Requested profile
The applicant must have an Engineer or Master degree in one of the following disciplines: engineering sciences or applied mathematics. In addition, the applicant must have strong skills in the following domains:
- Fault detection, isolation and diagnostic. Skills in failure prognostic would be appreciated for the applicant.
- Modelling by using artificial intelligence tools, particularly probabilistic models.
- Data and signal processing.
- Matlab programming.
- Good level in English: spoken and written.

Type of financing
Public financing (Grant of the French Ministry of Education and Scientific Research)

Candidature
Send by e-mail to kamal.medjaher@ens2m.fr and noureddine.zerhouni@ens2m.fr:
a CV and a motivation letter ;
the grading during the last year of studies (Master or Engineering level) ;
a letter of recommendation from the head of the research department (or from the head of the last year of studies).