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.









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