Société : École des Mines de Saint-Étienne Lieu : Gardanne
Postdoctoral fellowship in optical instrumentation characterizing organic bioelectronics devices Scientific Context and Objectives Ultra-flexible, conformable and implantable artificial intelligence organic electronic devices hold promise to revolutionize the real-time monitoring and treatment of chronic diseases.
Such devices could be based on organic electrochemical transistors (OECTs) exploiting polymeric mixed ion-to-electron conductors (PMIECs) as active layers.
Indeed, PMIECs have emerged as an excellent materials platform to interface biology with conventional electronics; identified as the â??organic or plastic bioelectronicsâ? field 1,2 .
The Organic ElectroChemical Transistor (OECT) is considered as one of the key building-block to operate such a transduction 3 .
Its efficiency is evaluated following some Figures of Merits (FoMs):
i) the transconductance (g m ), ii) the switching times (t ionic vs.
t electronic ), iii) an in-situ imaging of the dedoping propagating front (e.g.
ionic mobility measurement), iv) the electrochemical impedance to establish the electrical equivalent circuit and extract capacitance.
Mastering hierarchical self-organization and choosing the most favorable morphology in PMIECs are of paramount importance to improve the OECTs transduction operation.
Beyond transducing application, in more long envision term, OECT is attractive to make emerging neuromorphics or bioelectronics circuit applications.
Simple inverters were demonstrated in a CMOS-like configuration.
It gives promising basis to investigate advanced circuits.
Our current understanding shows that swelling (or ionic penetration) properties of such (macro)molecular PMIECs are vital to properly drive OECTs.
Indeed, the swelling of the hydrophilic (thus ionic) rich-phases authorizes the ions to penetrate and to move in vicinity of the hydrophobic pi-conjugated rich phases, modulating their doping states and thus the amount of electronic current flowing in the channel of OECTs.
Consequently, the total surface that ionic & p-conjugated phases exchange in between and their self-organization play pivotal roles since such a transduction takes place in all the volume of the channel layer of an OECT.
In such a scientific context, the postdoctoral fellow (PDF) will develop a new optical and electro-optical instrumentation which will allow us to record PMIEC's ionic mobility by analyzing the front (de)doping mechanisms.
In particular, as first objective, the PDF will develop the control and synchronization by computer (Python programming environment) of several spectroscopic, optoelectronics and electrical equipments to automatically extract key physical-chemical parameters of PMIECs.
By combining spectroscopic data between ICONIC project partners, these investigations will contribute to establishing the engineering rules and optimal structure-property relationships of PMIECs that will optimize the OECT transduction operation.
Last but not the least, the PDF will have support to fabricate OECTs in cleanroom, to monitor & analyze its key FoMs through the original developed instrumentation.
Laboratory Location & Collaborative Context The PDF position is located in an Excellence and collaborative environment, in the Centre de Microélectronique de Provence (CMP) (880, avenue de Mimet, Gardanne 13120, France).
CMP belongs to the IMT MinesSaint-Etienne Graduate Engineering School.
The applicant will evolve in the Flexible Electronics Department of CMP.
All the organic neuromorphic devices will be designed, fabricated, first-proof demonstrated and characterized in the 650 m 2 State-of-the-Art cleanroom of CMP.
The applicant will have a full and free access to complete his.her scientific purposes.
The candidate will evolve in the multidisciplinary project, engaging 8 partners from 6 countries covering the academic and industrial worlds (including 1 SME).
Candidate Profile / Skills/Qualifications The candidate should preferably hold (or be about to earn) a PhD degree in Instrumentation & Spectroscopy, Materials Science or Electrical Engineering.
i) A previous experience in the development of instrumentation to analyze (opto)(bio)electronic devices, ii) a demonstrated ability to perform independent work, iii) an excellent communication and writing (English) skills are equally important criteria with respect to academic qualifications and scientific merit for the selection of the candidate.
The candidate should aim i) to work in a collaborative context and ii) to propose scientific investigations that are at the interface between Physics of Electronic Devices and Materials Science.
Knowledges or past experiences in Organic (Bio)Electronics are advantageously considered.
Additional Information Salary :
â?¬ 2300 net salary/month (in France, healthcare costs are 100% almost reimbursed), Employer :
18 months-long (with possible extension), Starting Date :
asap Application & Eligibility Criteria The application is immediately opened for submission.
We ask the applicants to provide a single pdf file including i) a copy of passport, ii) a curriculum vitae, iii) a cover letter, iv) a copy of obtained diploma (i.e a certification letter of PhD's Degree and anterior diploma) and v) reference letters from PhD, MSc.
supervisors.
This single pdf e-file should be addressed to Dr.
S.
Sanaur (sanauremse.fr).
Selection Process Applications will be evaluated through the following steps:
1) Eligibility check of applications based on the submitted e-file, 2) Shortlisted candidates will be invited for an interview session via videoconference.
All applicants qualified for videoconference will be notified of the final decision.
Bibliography 1.
Someya, T., Bao, Z.
& Malliaras, G.
G.
The rise of plastic bioelectronics.
Nature 540 , 379 385 (2016).
2.
Berggren, M.
& Richterâ?Dahlfors, A.
Organic Bioelectronics.
Advanced Materials 19 , 3201 3213 (2007).
3.
Rivnay, J.
et al.
Organic electrochemical transistors.
Nature Reviews Materials 3 , 1 14 (2018).
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