Laboratoire Charles Coulomb UMR 5221 CNRS/UM2 (L2C)


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Postdoc 12 months - Water confined in carbon nanotubes : a nanomechanical approach, M/F

par Christelle EVE - publié le

Nanoscale confined water is drastically different from the bulk. When confined at the nanoscale, water can adopt structures that are unique in nature, with consequences on its phase diagram. Moreover, at this scale the water flow diverges from the continuum hydrodynamics.
Probing experimentally the confinement of water inside a carbon nanotube is challenging, as they are very few molecules involved, on the order of a few thousands. Therefore, it is necessary to imagine new methods to probe the physics of those objects.
Nanomechanics has the potential to overtake this challenge. A carbon nanotube mechanical oscillator can – in theory – weight masses down to a single proton.

The project will focus on fabricating the samples combining nanofluidics and nanomechanics in clean room, developing the measurement tools (including a fast tracking of the resonator frequency) and using such tools to measure both static (structure, phase diagram) and dynamic (mass transport) properties of confined water. The ultimate sensitivity of the resonator in presence of water should also be addressed.

The candidate will :
 Produce samples in clean room : lithography, etching, metallization, etc.
 Participate in the development of the nanomechanical measurement tool : low-noise electronics, fast measurements with a PLL, interfaces (Labview, Python)
 Acquire and analyze data
 Present the results

The candidate can :
 Participate in the supervision of students
 Participate in the dissemination activities : publications in scientific journals, conferences, general public communication, etc.

The candidate (M/F) must have experience in clean room microfabrication techniques, and a minimal background in electronics. In addition, experience in mechanical resonators and/or soft matter will be considered as a plus.

Working environment
The work will be carried out in the ‘Laboratoire Charles Coulomb’ (L2C) at Montpellier University, France, in the team ‘Nanomaterials’. The team is mainly composed of experimentalists.
The work will be supervised by Adrien Noury (PI), CNRS researcher, and by François Henn, Full Professor.

The project is funded by the program ‘Emergence’ of CNRS/INP.

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