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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.









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