GREMAN is a research laboratory on materials, microelectronics, acoustics and nanotechnology of the University of Tours, CNRS and INSA Centre Val de Loire created January 1st 2012 by the merging of several groups located in Tours and Blois, France. Its expertise covers the value chain from materials science up to devices (components, sensors, transducers ...) and their integration. Fields such as electrical energy efficiency, power microelectronics and the use of ultrasonic waves are particularly targeted, for applications in industry, health and nomadic apparatus.

The activities of GREMAN are focused on five priority topics :

  • Functional oxides for energy efficiency: combinatory synthesis and nanostructuration.
  • Magnetic and optical properties of ferroic and electronic correlation materials.
  • Novel materials and components for power and RF microelectronics.
  • Piezoelectric and capacitive micronanosystems for ultrasonic transducers and energy conversion.
  • Ultrasonic methods and instrumentation for characterisation of complex media.









Carbides Capacitance X-ray diffraction Ceramics Hyperbolic law Porous silicon Electron microscopy Atomistic molecular dynamics Phase transitions ZnO Micromachining Epitaxy Multiferroics Thin film deposition Etching Organic solar cell Piézoélectricité Cost of electricity consumption Mechanical properties Composites Nanogenerator Electrodes Spark plasma sintering Doping Thin film growth Piezoelectric materials Annealing Demand side management CCTO Dielectric properties Boundary value problems Reliability Ferroelectrics Crystal structure Oxides Characterization Crystal growth Condensed matter properties Zinc oxide ZnO nanowires High pressure Piezoelectric properties Aluminium Cryoetching Modeling Acoustic waves Barium titanate Nanowires Ferroelectricity Diffraction optics Disperse systems Acoustics CMUT Imaging Collaborative framework Raman spectroscopy Microwave frequency Electronic structure Domain walls Electrical properties Layered compounds Silicon Light diffraction Piezoelectricity Crystallography Elasticity Energy harvesting Crosstalk Smart grid Ultrasound Time-dependent density functional theory Materials Resistive switching Electrochemical etching Electrical resistivity Thermoelectrics Capacitors Transducers Adsorption Mesoporous silicon Numerical modeling Silicon devices Thin films Colossal permittivity Nanoparticles Porous materials Chemical vapor deposition Precipitation 3C–SiC Individual housing LPCVD Chemical synthesis Attractiveness of education Raman scattering Active filters Thermal conductivity Atomic force microscopy Composite AC switch Piezoelectric