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.









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