Dr. Julien Barrier Email & Phone Number

Barcelona, Ct, Es

Barcelona, Ct, Es

Barcelona, Ct, Es

Barcelona, Catalonia, Spain

Manchester, England, United Kingdom

I was the EPSRC Doctoral Prize Fellow in the Condensed Matter Physics group at the University of Manchester (U.K), a prestigious prize offered to the best EPSRC funded PhD students, to pursue independently their project.Funding: £53kMy work consisted in investigating the physical properties of graphene nano electronic materials. I focused my attention on moiré quantum transport and coupling with superconductors (Josephson junctions).Results: * 2 papers, published in Nature… Show more I was the EPSRC Doctoral Prize Fellow in the Condensed Matter Physics group at the University of Manchester (U.K), a prestigious prize offered to the best EPSRC funded PhD students, to pursue independently their project.Funding: £53kMy work consisted in investigating the physical properties of graphene nano electronic materials. I focused my attention on moiré quantum transport and coupling with superconductors (Josephson junctions).Results: * 2 papers, published in Nature (“One-dimensional proximity superconductivity in the quantum Hall regime”, J. Barrier et al, and “Giant magnetoresistance of Dirac plasma in high-mobility graphene”, Na Xin et al.)* other projects to be published. Show less

Manchester, United Kingdom

* PHYS30280 (2020-2021 and 2021-2022): Condensed Matter Physics Lab, semesters 5&6 undergraduate- advise & mark students- lab include AFM, STM, NMR, Spin Echo, Hall effect in semiconductors, Schockley-Haynes experiment, graphene characterisation, particle detector. - 7h per week* 2nd-year tutorials (2020-2021): semesters 4&5 undergraduate- quantum mechanics, electromagnetism- Propose student pastoral support per group of 5- review and mark weekly assignment-… Show more * PHYS30280 (2020-2021 and 2021-2022): Condensed Matter Physics Lab, semesters 5&6 undergraduate- advise & mark students- lab include AFM, STM, NMR, Spin Echo, Hall effect in semiconductors, Schockley-Haynes experiment, graphene characterisation, particle detector. - 7h per week* 2nd-year tutorials (2020-2021): semesters 4&5 undergraduate- quantum mechanics, electromagnetism- Propose student pastoral support per group of 5- review and mark weekly assignment- 2h per week* PHYS20872 (2019-2020): Theory Computing Project, semester 4 undergraduate (Python, C++)- advise students on problems related to Numerical Integration, Monte-Carlo integration and Matrixes methods.- 7h per week* PHYS20161 (2019-2020): Introduction to Programming for Physicists, semester 3 undergraduate (Python)- Assess and advise students on the programming course- Propose student pastoral support- Mark the final exam- 7h per week* PHYS20161 (2018-2019): Introduction to Programming for Physicists, semester 3 undergraduate (Python & C++)- Assessed and advised the students on the programming course- Proposed student pastoral support- Marking of the final exam- 7 hours per week Show less

San Francisco Bay Area

Structure relation properties within mixed-halide perovskites used for tandem solar cells.Understanding of phase transitions leading to variation in the band gap of the materials.Measurements of oxidation states within mixed-halide perovskites via X-ray photoemission spectroscopy.Work under the supervision of Dr. Michael F. Toney.Results:* oral talk at MRS Fall 2018, symposium ET05: “Tetragonal to Cubic Phase Transition in FA1-xCsxPb(I1-yBry)3: Temperature Dependence &… Show more Structure relation properties within mixed-halide perovskites used for tandem solar cells.Understanding of phase transitions leading to variation in the band gap of the materials.Measurements of oxidation states within mixed-halide perovskites via X-ray photoemission spectroscopy.Work under the supervision of Dr. Michael F. Toney.Results:* oral talk at MRS Fall 2018, symposium ET05: “Tetragonal to Cubic Phase Transition in FA1-xCsxPb(I1-yBry)3: Temperature Dependence & Impact on Band Gap”, Julien Barrier, Aryeh Gold-Parker, Eli Wolf, Rachel E. Beal, Michael D. McGehee, Michael F. Toney. Boston, November 27, 2018.* 1 peer review paper (in preparation)Skills acquired:Thin films processing,Hybrid perovskites,Synchrotron X-ray diffraction techniques: * X-ray diffraction * X-ray photoemission spectroscopyChi squared analysisPhase transition theoryAbout SLAC:SLAC National Accelerator Laboratory, located in the heart of Silicon Valley, started in 1962 as the world’s largest linear accelerator on the joint initiative of Stanford University and the United States Department of Energy (DOE). Over the last 50 years, it has grown into a large and diverse 1,600 employees workforce performing cutting-edge research across a wide range of disciplines, including energy, cosmology and accelerator technologies. The top-notch research facilities, as well as the historical strengths in particle physics, allowed scientists at SLAC to discover the universe fundamental building blocks, leading to 6 Nobel prizes both in Physics and Chemistry. Show less

Chambéry Area, France

Collaborative project between Arkema, CEA and ENS Lyon. Development of water- and gaz-barrier adhesives for the encapsulation of Third Generation Solar Cells.Synthesised and characterised nanocharged acrylic adhesives for the encapsulation of optoelectronic devices. Enhanced the barrier properties towards gazes and water with proper dispersion of nanofillers. Carried out compatibility tests of the produced adhesives to Organic and Perovskite Solar Cells. Carried out aging tests… Show more Collaborative project between Arkema, CEA and ENS Lyon. Development of water- and gaz-barrier adhesives for the encapsulation of Third Generation Solar Cells.Synthesised and characterised nanocharged acrylic adhesives for the encapsulation of optoelectronic devices. Enhanced the barrier properties towards gazes and water with proper dispersion of nanofillers. Carried out compatibility tests of the produced adhesives to Organic and Perovskite Solar Cells. Carried out aging tests, permeation tests, peeling tests, UV-Vis spectroscopy, DSC, IR spectroscopy.Synthesised, exfoliated nanoplatelets and functionnalised the surface of inorganic nanofillers for integration inside polymers.Characterisation using Fourier-Transform Infrared spectroscopy, X-Ray Diffraction, Transission Electron Microscopy, Scanning Electron Microscopy, Dynamic Light Scattering. Worked under the supervision of Dr. Stéphane Cros (CEA), Pr. Frédéric Chaput (ENS) and Dr. Manuel Hidalgo (Arkema)Results: litterature review, designed chemical protocols, prove hypothesis, 1 patent pending.Skills acquired: Self-directing, file a patent, Organic & Perovskite Solar Cells , Chemical Vapor Deposition, solgel synthesis, grafting stategies, colloidal dispersion.About CEA:CEA is the French public research institution dedicated to nuclear and renewable energies. It was founded by President Charles de Gaulle after World War II, to warrant France’s sovereignty in the realm of energy and defense capabilities (including those based on nuclear reactions).De Gaulle named Frédéric Joliot, the 1935 chemistry Nobel laureate and an ESPCI Alumnus as CEA’s founding director, thus ensuring that excellence be the main driver of the institution. Since 2014, CEA has constantely been ranked #1 by Reuters as the World most innovative research institution. Show less

Paris Area, France

Preparing students attending 'Classes Préparatoires aux Grandes Écoles' for the Mathematics oral exam to the French Grandes Écoles for scientific studies at Lycée Saint Louis. 2 hours per week.

Lyon Area, France

Studied the influence of chemical parameters (purity, composition and temperature) on the physical properties (polarization hysteresis cycles, d33, dynamic modulus, dielectric spectroscopy, Curie transition, melting enthalpy) of piezoelectrics and electrostrictive materials. Found solutions to enhance dielectric properties and operating temperature range of PVDF’s terpolymers.Worked under the direction of Dr. Thierry Lannuzel.Acquired skills : Fluoropolymers applications, carrying… Show more Studied the influence of chemical parameters (purity, composition and temperature) on the physical properties (polarization hysteresis cycles, d33, dynamic modulus, dielectric spectroscopy, Curie transition, melting enthalpy) of piezoelectrics and electrostrictive materials. Found solutions to enhance dielectric properties and operating temperature range of PVDF’s terpolymers.Worked under the direction of Dr. Thierry Lannuzel.Acquired skills : Fluoropolymers applications, carrying characterization studiesPiezotech is a startup incubated in Arkema's “Centre de Recherche Rhône Alpes”. It is specialized in the production and the development of Electroactive fluorinated-based polymers. Show less

Paris

Association sportive de l'ESPCI is the students’ run sports union. It provides sport activities for more than 300 students (among the 250 undergratuates and 180 PhD students in the school).My responsibilities and achievements included:Fostered growth of the organization. Designed a visual identity. Ensured consistency of the brand. Set up a communication strategy.Managed PRDetermined, promoted and implemented the communication framework & platforms strategy.Worked on… Show more Association sportive de l'ESPCI is the students’ run sports union. It provides sport activities for more than 300 students (among the 250 undergratuates and 180 PhD students in the school).My responsibilities and achievements included:Fostered growth of the organization. Designed a visual identity. Ensured consistency of the brand. Set up a communication strategy.Managed PRDetermined, promoted and implemented the communication framework & platforms strategy.Worked on content marketing : creation and delivery of marketing content (brochures, papers, flyers, posters, presentations)Managed digital channels (internal website, social media, mailing)Designed sport jerseys.Collaboration with the school's communication direction.Canvass of companies for sponsorship.Organized events (including internal and external sport challenges) to foster growth of the organization and improve its image within the school.results : 170% growth in membership, 190% growth in sponsorship revenues.skills developped : experience in public relations, corporate communication, small brand management, leadership, written and oral communication skills, ability to promote an organization with corporates, social media communication, fundraising, event management, Adobe Illustrator, & Adobe InDesign. Show less

Paris Area, France

Studied the influence of some formatting parameters (concentration, temperature, solvent) on the cristalline phases and on the morphology of thin polymers and copolymers piezoelectric films (PVDF, PVDF-TrFE). Caracterization using CLSM, SEM, DSC, DMA, IR spectroscopy and X-Ray Diffraction, under the direction of Prof. Sylvie Tencé-Girault.

Berlin Area, Germany

IR measurements on wireless modules (GSM, GPRS, UMTS, LTE, GPS) in order to have a better understanding of energy consumption and thermal dissipation within the components of the modules.Worked under the direction of Dr. Henrik Duchstein.

Toulon Area, France

Successfully co-founded an open-source, web-based communication platform, using the XMPP protocol to communicate in a decentralized fashion. Managed UI design, communication and marketing strategy of the project. Given lectures to developers conferences (Geneva, Strasbourg).Worked with V. Saliou, co-founder & developer.Results : used by some laboratories inside CERN, CNRS. 100k+ downloads. 50k+ users on the offical platform.Skills acquired : communication, web development… Show more Successfully co-founded an open-source, web-based communication platform, using the XMPP protocol to communicate in a decentralized fashion. Managed UI design, communication and marketing strategy of the project. Given lectures to developers conferences (Geneva, Strasbourg).Worked with V. Saliou, co-founder & developer.Results : used by some laboratories inside CERN, CNRS. 100k+ downloads. 50k+ users on the offical platform.Skills acquired : communication, web development, product & strategy management Show less

Doctor Of Philosophy - Phd, Condensed Matter Physics

“Electronic properties of graphene heterostructures below 1K“ supervisor: Prof. Sir Andre Geim The past 15 years have witnessed a dramatic.

Master Of Science (Msc), Chemical Physics, Msc

Activities and Societies: Sports Union ESPCI Paris (École supérieure de physique et de chimie industrielles de la Ville de Paris) is.