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Univ. Paris-Saclay

Jean-Christophe Gabriel

Jean-Christophe P. Gabriel, PhD, HDR

Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Énergie

Laboratoire Innovation, Chimie des Surfaces Et Nanosciences

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Current positions:

  • Research Director (Nanoscience) in CEA 

  • Co-Director of the Joint CEA/NTU Laboratory SCARCE in Singapore

  • Visiting Professor at the Nanyang Technological University of Singapore

Jean-Christophe P. Gabriel now leads an international research group delocalised on both CEA Saclay and Nanyang Technological University. Members of the group in NTU are focussing on developping e-waste recycling process steps. In Saclay, in addition to e-waste recycling, the group also investigate nanomaterials, their synthesis, characterisation, processing and applications.


His group current fields of interest are the following:

  1. Waste recycling: we are developing tools and processes for impoving various wastes recycling to enable more economically viable waste processing. Our efforts in this field started in 2013 and focussed at the time on an integrated microfluidic lab-on-chip that enables much faster exploration of multidimensional phase diagrams of complex fluids. Such lab-on-chip devices integrate various sensors as well as characterizations methods (such as FTIR in hollow waveguides, or X-ray fluorescence). This work was first funded, from 2013 util 2018, by the advanced ERC project REE-CYCLE (PI = Prof. Thomas Zemb) that aims at developing new rare earth extraction/recycling processes, at least 10 times more efficient that current liquid-liquid extraction processes, where JCG was acting co-PI. Since then, within the SCARCE CEA/NTU joint laboratory in Singapore, we have further developped the fast process development microfluidic platform as well as expanded our efforts to other process steps in the recycling of e-waste (Printed Circuit boards - PCBs, plastics from e-wastes), such has:
    • PCBs and PV dismantling and associated electronic component sorting;

    • Physical method based separation;

    • Critical metals recovery and purification;

    • Liquid-liquid and Solid-liquid hydrometallurgical recovery process steps development using the world first microfluidic plateform integrating on line FTIR and XRF.

    • Use of supercritical fluid as a green solvent for e-waste recycling.

  2. Nanomaterials: In our laboratory, we synthesize and characterize low dimensionality materials (0, 1 and 2D), by all means necessary and available (from visual/microscopic observations to the use of synchrotrons for the structural investigations of materials). These materials can often be exfoliated/dispersed in solution leading to some complex/colloidal fluids, exhibiting a very wide range of fascinating behaviors. They can also be integrated into various types of devices, hence the following topic.
  3. Integration:
    • Thanks to the awarded ANR Project 4WATER (12/2017-12/2022) (see video of presentation): we are elaborating new and cheap multi-target chemical sensor arrays for the continuous monitoring of groundwater quality. Using a microelectronic approach, the sensors will be based on functionalized nanomaterials and that will target various ions selected for their relevance as regards the quality of fresh water.
    • Thanks to the awarded ANR Project 2D-MEMBA (2022-2025): we integrate nanomaterials for the making of less power-hungry membranes for the purification of water.

For more details on our research group look here.

Other duties

  1. Member of the Scientific Council of Arc Nucleart
  2. Editorial board member for:

Result highlights

In the NEWS


Dr. Jean-Christophe P. Gabriel is one of CEA’s Research Director, in the field of Nanoscience. Since September 2020, his French laboratory is located in CEA Saclay with a special focus on 1D and 2D nanomaterials and their applications. He is also currently a visiting Professor at NTU where he serves, since August 2018, as co-director of the NTU Singapore CEA Alliance for Research in Circular Economy (SCARCE), CEA's first joint laboratory outside French territory (comprising ~25 postdocs and Engineers). There he directly co-supervise, together with Prof. Alex  Yan Qingyu, a team of ~10 postdocs, PhDs and Engineers in the field of e-waste and Prinited Circuit Board recycling.

He first joined the French Alternative Energy and Atomic Energy Commission (CEA) in 2007 as CEA/LETI institute’s “Beyond CMOS” program manager as well as the business director of the academic - industry Caltech – LETI alliance, which led, years later, to the creation of the Startup Apix Technology.

From 2009 to 2016, he became deputy director of CEA’s Nanoscience program (budget: 1 M€/year), help defining, financing, networking, growing, communicating and prospering seed projects and young researchers. Hence, in this role of scientific project manager, he helped the maturation of TRL=0 ideas, trained young researchers in writing very high impact factor articles (Nature and co), co-invented various technologies, helped on building successful project proposals (ERCs), as well as on the germination and business model definition at pre-seeding round of future startups such as NawaTechnologiesAledia,  cell&soft).

In parallel, from 2013 to 2018, he was co-principal investigator of the REE-CYCLE advanced ERC project (2013-2018), that aimed at developing new rare earth extraction/recycling processes, at least 10 times more efficient that current liquid-liquid extraction processes. In his laboratory in Grenoble, created in 2014, he was developing integrated microfluidic lab-on-chip that enable much faster exploration of multidimensional phase diagrams of complex fluids. Such lab-on-chip devices integrate various sensors as well as characterizations methods (such as FTIR in hollow waveguides, or Xray fluorescence).

Former student at the “Ecole Normale Supérieure” in Paris, he received his Ph.D. (1993), supervised by Dr. Patrick Batail, from University Paris-Saclay (formerly Orsay University) and his Habilitation from Grenoble-Alpes University (Formerly Joseph Fourier University). He completed his PhD training with two postdocs. The first in Risø National Laboratory, Denmark, under the supervision of Prof. Klaus Bechgaard, the second at the Material Research Laboratory a the University of California Santa Barbara, under the mentorship of Prof. Anthony K. Cheetham.

His career is a mixed academic – industrial one. He indeed started his tenured career at CNRS (4 years at Jean Rouxel Institute, IMN, Nantes) followed by 6 years in the Californian startup Nanomix (nano.com), where he was one of the first employee. In this UC Berkeley's spinoff he helped in the technology transfer of nanomaterials, hydrogen storage and carbon nanotubes technologies, helped raised $34 million of venture capital money and with his team was the first to put an integrated nanotube based electronic device on the market (a hydrogen sensor, in 2005). Since he left the company in August 2007, Nanomix has marketed fast electronic diagnostic tools (Ebola, COVID-19 etc.) based on, among others, patents that he co-invented.

Jean-Christophe has published more than ~ 80 papers in international peer reviewed journal and is co-inventor on more than 45 patents and patent applications, dealing with nanomaterials (carbon nanotubes, graphene) applications (sensors, H2 storage) and waste recycling processes.

Other profiles:

Recent Publications


  • « Crystalline Restacking of 2D-Materials from Solution. » Lina Cherni, Karin El Rifaii, Henricus H. Wensink,* Sarah M. Chevrier, Claire Goldmann, Laurent J. Michot, Patrick Davidson,* Jean-Christophe P. Gabriel,* , Nanoscale  15, 18359-18367 (2023). https://doi.org/10.1039/d3nr04885c

  • « Enhanced extraction of brominated flame retardants from e-waste plastics » Pallab Das, Qiang Zeng, Antoine Leybros, Jean-Christophe P. Gabriel, Chor Yong Tay, Jong-Min Lee, Chemical Engineering Journal 144126 (20 June 2023). https://doi.org/10.1016/j.cej.2023.144126

  • « Urban Mining of Unexploited Spent Critical Metals from E-waste Made Possible Using Advanced Sorting. » Nicolas M. Charpentier, Ange A. Maurice, Dong Xia, Wen-Jie Li, Chang-Sian Chua, Andrea Brambilla, Jean-Christophe P. Gabriel, Ressources, Conservation & Recycling 196, 107033 (September 2023). https://doi.org/10.1016/j.resconrec.2023.107033

 " Intense pH sensitivity modulation in carbon nanotube-based field-effect transistor by non-covalent polyfluorene functionalization. " Gookbin Cho, Eva Grineval, Jean-Christophe P. Gabriel and Bérengère Lebental, Nanomaterials, 13, 1157 (2023), special issue “Nanostructures for Integrated Devices” (Invited, APC waived).

• "On-line Quantification of Solid-Phase Metal Extraction Efficiencies Using Instrumented Millifluidics Platform. " Fabien L. Olivier, Sarah M. Chevrier, Barbara Keller, and Jean-Christophe P. Gabriel, Chemical Engineering Journal 454(3) 140306 (15 February 2023)Pre-proof version available for free on Hal repository.


   "  Do aqueous suspensions of smectite clays form a smectic liquid-crystalline phase? " Karin El Rifaii, Henricus H. Wensink, Florian Puchtler, Ivan Dozov, Thomas Bizien, Laurent J. Michot, Jean-Christophe P. Gabriel, Josef Breu, Patrick Davidson, Langmuir, 38(48), 14563-14573 (2022). Pre-proof version available for free on Hal repository.

  "Efficient Electrocatalyst Nanoparticles from Upcycled Class II Capacitors» Junhua Xu, Daobin Liu, Carmen Lee, Pierre Feydi, Marlene Chapuis, Jing Yu, Emmanuel Billy, Qingyu Yan, Jean-Christophe P. Gabriel, Nanomaterials 12(15) 2697 (05/082022) (in open access).

 "Liquid-liquid extraction: thermodynamics-kinetics driven processes explored by microfluidics." Fabien Olivier, Ange A. Maurice, Jean-Christophe P. Gabriel, Comptes Rendus Chim. 25, 137-148 (2022). (in open access).

• "Activated Recovery of PVC From Contaminated Waste Extension Cord-Cable Using a Weak Acid." Chunmiao Jia, Pallab Das, Qiang Zeng, Jean-Christophe P. Gabriel, Chor Yong Tay, Jong-Min Lee, Chemosphere, 303(1) 134878 (2022) (in open access).

"Sustainable Route for Nd Recycling from Waste Electronic Components Featured with Unique Element-Specific Sorting Enabling Simplified Hydrometallurgy." Dong Xia, Nicolas M. Charpentier, Ange A. Maurice, Andrea Brambilla, Qingyu Yan, Jean-Christophe P. Gabriel, Chemical Engineering Journal, 441, 135886(2022) (in open access).

• "Direct reuse of electronic plastic scraps to direct stem cell growth and differentiation." Pujiang Shi, Chiew Kei Tan, Zhuoran Wu, Jean-Christophe P. Gabriel, Madhavi Srinivasan, Jong-Min Lee and Chor Yong Tay, Science of the Total Environment, 807, 151085 (2022). Pre-proof version available for free on Hal repository.

• "First online X‐ray fluorescence characterization of liquid‐liquid extraction in microfluidics"
Ange A. Maurice, Johannes Theisen, Varun Rai, Fabien Olivier, Asmae El Maangar, Jean Duhamet, Thomas Zemb, Jean-Christophe P. Gabriel, Nano Select 3(2) (2022) 425-436.



• "Fine tuning of the structural colors of photonic nanosheet suspensions by polymer doping" Karin El Rifaii, Henricus H. Wensink, Claire Goldmann, Laurent Michot, Jean-Christophe P. Gabriel, Patrick Davidson, Soft Matter 17(41) 9280-9292 (17 Nov. 2021) with Back cover.

• "Dismantling of Printed Circuit Boards Enabling Electronic Components Sorting and Their Subsequent Treatment Open Improved Elemental Sustainability Opportunities." Ange A. Maurice, Khang Ngoc Dinh, Nicolas M. Charpentier, Andrea Brambilla, Jean-Christophe P. Gabriel, Sustainability 13(18), 10357 (2021).

• "Electrochemical approaches for the recovery of metals from electronic waste, a critical review"
Varun Rai, Daobin Liu, Dong Xia, Jean-Christophe P. Gabriel, Recycling 6(3), 53(2021) (Article Processing Charge waved).

• "Laser induced breakdown spectroscopy for plastic analysis"
Qiang Zeng, Jean-Baptiste Sirven, Jean-Christophe P. Gabriel, Chor Yong Tay, Jong-Min Lee, Trends in Analytical Chemistry, 116280 (2021).

• "Value-added products from thermochemical treatments of contaminated e-waste plastics"
Pallab Das, Jean-Christophe P. Gabriel, Chor Yong Tay, Jong-Min Lee. Chemosphere 269, 129409 (2021)

• "On-line spectroscopic study of brominated flame retardant extraction in supercritical CO2"
Dong Xia, Ange Maurice, Antoine Leybros, Jong-Min Lee, Agnes Grandjean, Jean-Christophe P. Gabriel, Chemosphere 263, 128282 (2021)


• "Destabilization of the nematic phase of clay nanosheet suspensions by polymer adsorption"
Karin El Rifaii, Henricus H. Wensink, Thomas Bizien, Jean-Christophe P. Gabriel, Laurent Michot, Patrick Davidson, Langmuir 36(42) 12563–12571 (2020)

• "Microfluidic lab-on-chip advances for liquid-liquid extraction process studies"
Ange Maurice, Johannes Theisen, Jean-Christophe P. Gabriel, Current Opinion In Colloid & Interface Science 46, 20-35 (2020)

• "A microfluidic study of synergic liquid–liquid extraction of rare earth elements"
Asmae El Maangar, Johannes Theisen, Christophe Penisson, Thomas Zemb, Jean-Christophe P. Gabriel, Phys. Chem. Chem. Phys. 22(10) 5449-5462 (2020)


• "Effects of porous media on extraction kinetics: Is the membrane really a limiting factor?"
Johannes Theisen, Christophe Penisson, Julien Rey, Thomas Zemb, Jean Duhamet, Jean-Christophe P. Gabriel, J. Memb. Sc. 486, 318-325 (2019)

• "Methods for dispersing carbon nanotubes for nanotechnology applications: liquid nanocrystals, suspensions, polyelectrolytes, colloids and organization control"
S Manzetti, JCP Gabriel, International Nano Letters 9 (1), 31-49 (2019)


• "Molecular simulation of binary phase diagrams from the osmotic equilibrium method: vapour pressure and activity in water ethanol mixtures"
M. Bley, M. Duvail, P. Guilbaud, C. Penisson, J. Theisen, J.-C. Gabriel and J.-F. Dufrêche, Molecular Physics 116 (15-16) (2018) 2009-2021

• "Determining the partial pressure of volatile components via substrate-integrated hollow waveguide infrared spectroscopy with integrated microfluidics"
V. Kokoric, J. Theisen, A. Wilk, C. Penisson, G. Bernard, B. Mizaikoff, J.C.P. Gabriel, Analytical Chemistry, Anal. Chem. 90(7) 4445–4451 (2018)

• "Water activity measurement of NaCl/H2O mixtures via substrate-integrated hollow waveguide infrared spectroscopy with integrated microfluidics"
C. Penisson, A. Wilk, J. Theisen, V. Kokoric, B. Mizaikoff, J.C.P. Gabriel, Biotech, Biomaterials, and Biomedical: TechConnect Briefs 198-201 (2018), CRC Press, ISBN 978-0-9988782-4-9. Proceeding of Nanotech 2018, May 13-16, 2018 Anaheim, CA, USA.

• "Isotropic, nematic, and lamellar phases in colloidal suspensions of nanosheets"
P. Davidson, C. Penisson, C. Doru, J.C.P. Gabriel, Proc. National. Acad. Sc. 201802692 (2018)

Most Cited Publications and Patents (~100+ citations, after google Scholar)*

* citation numbers last updated on 15/06/2022


Electronic detection of specific protein binding using nanotube FET devices

A Star, JCP Gabriel, K Bradley, G Grüner

Nano letters 3 (4), 459-463




Label-free detection of DNA hybridization using carbon nanotube network field-effect transistors

A Star, E Tu, J Niemann, JCP Gabriel, CS Joiner, C Valcke

Proceedings of the National Academy of Sciences 103 (4), 921-926




Gas sensor array based on metal-decorated carbon nanotubes

A Star, V Joshi, S Skarupo, D Thomas, JCP Gabriel

The Journal of Physical Chemistry B 110 (42), 21014-21020




Flexible nanotube electronics

K Bradley, JCP Gabriel, G Grüner

Nano Letters 3 (10), 1353-1355




Nanoelectronic carbon dioxide sensors

A Star, TR Han, V Joshi, JCP Gabriel, G Grüner

Advanced Materials 16 (22), 2049-2052




Observation of nematic liquid-crystal textures in aqueous gels of smectite clays

JCP Gabriel, C Sanchez, P Davidson

The Journal of physical chemistry 100 (26), 11139-11143




Chemistry of hexanuclear rhenium chalcohalide clusters

JCP Gabriel, K Boubekeur, S Uriel, P Batail

Chemical Reviews 101 (7), 2037-2066




Swollen liquid-crystalline lamellar phase based on extended solid-like sheets

JCP Gabriel, F Camerel, BJ Lemaire, H Desvaux, P Davidson, P Batail

Nature 413 (6855), 504-508




Interaction of aromatic compounds with carbon nanotubes: correlation to the Hammett parameter of the substituent and measured carbon nanotube FET response

A Star, TR Han, JCP Gabriel, K Bradley, G Grüner

Nano letters 3 (10), 1421-1423




Charge transfer from ammonia physisorbed on nanotubes

K Bradley, JCP Gabriel, M Briman, A Star, G Grüner

Physical review letters 91 (21), 218301




New trends in colloidal liquid crystals based on mineral moieties

JCP Gabriel, P Davidson

Advanced Materials 12 (1), 9-20




Nano-electronic sensors for chemical and biological analytes, including capacitance and bio-membrane devices

K Bradley, YL Chang, JCP Gabriel, JL Passmore, S Skarupo, E Tu, ...

US Patent 8,154,093




Sensitivity control for nanotube sensors

K Bradley, PG Collins, JCP Gabriel, G Gruner, A Star

US Patent 6,894,359




Mineral liquid crystals

P Davidson, JCP Gabriel

Current opinion in colloid & interface science 9 (6), 377-383




Electrocrystallization, an invaluable tool for the construction of ordered, electroactive molecular solids

P Batail, K Boubekeur, M Fourmigue, JCP Gabriel

Chemistry of materials 10 (10), 3005-3015




Short-channel effects in contact-passivated nanotube chemical sensors

K Bradley, JCP Gabriel, A Star, G Grüner

Applied Physics Letters 83 (18), 3821-3823




Influence of mobile ions on nanotube based FET devices

K Bradley, J Cumings, A Star, JCP Gabriel, G Grüner

Nano Letters 3 (5), 639-641




Ammonia nanosensors, and environmental control system

M Briman, C Bryant, YL Chang, JCP Gabriel, SC Gandhi, BN Johnson, ...

US Patent 8,152,991




The measurement by SAXS of the nematic order parameter of laponite gels

BJ Lemaire, P Panine, JCP Gabriel, P Davidson

EPL (Europhysics Letters) 59 (1), 55




Modification of selectivity for sensing for nanostructure device arrays

JCP Gabriel, PG Collins, K Bradley, G Gruner

US Patent 6,905,655




Quasi-Langmuir–Blodgett thin film deposition of carbon nanotubes

NP Armitage, JCP Gabriel, G Grüner

Journal of applied physics 95 (6), 3228-3230




Mineral liquid crystals from self-assembly of anisotropic nanosystems

JCP Gabriel, P Davidson

Colloid Chemistry I, 119-172




Hydrogen storage by physisorption: beyond carbon

SH Jhi, YK Kwon, K Bradley, JCP Gabriel

Solid state communications 129 (12), 769-773




Remotely communicating, battery-powered nanostructure sensor devices

JL Passmore, JCP Gabriel, A Star, V Joshi, S Skarupo

US Patent 7,522,040




Electronic sensing of chemical and biological agents using functionalized nanostructures

J Gabriel, G Gruner, P Collins, B Swanson, F Wudl

US Patent App. 10/345,783




Flexible nanostructure electronic devices

NP Armitage, K Bradley, JCP Gabriel, G Grüner

US Patent 7,956,525



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