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.









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