Magneto-Nano-Electronics - Active, MEMS and flexible structures
Ultrasonic thermography - Micro-Fluidics

32 researchers and teacher-researchers
including 11 permanent staff (4 professors, 4 lecturers, 3 CNRS researchers)

The group's research focuses on:

• the study of multiphysical phenomena at the interface of wave phenomena (electromagnetic and acoustic), of magnetism, of active and/or flexible nanostructures, of micro-nano-technologies and of micro-fluidics with the aim of developing innovative applications in the fields of: ultrasound systems (non-destructive testing, imaging/characterization of complex media including in flows, therapy), electronic components or microsystems with enhanced performance or functionality, and micro-fluidics.

Specificity of the approach:

• Study of critical and supercritical static, quasi-static and dynamic phenomena of coupled nonlinear systems (specific behaviors of coupled nonlinear systems at phase transition neighborhoods)
• Development of applications in functional electronics, acoustics and fluidics

4 main directions of work :

• Multistable nanostructures; Ultra-low power components; Towards new information processing paradigms:
  - Artificial magnetic and multiferroic nanostructures with spin reorientation transition
  - Magneto-electric memoryultra-low power(MELRAM)
  . - Memristors and Artificial Synapsesmagneto-electric
  - Magneto-Electro-Acousto-Mechanical Micro-Systems

• Critical state materials, bosonic micro-nano-structures and composites; Towards functional electronics and therapeutics:
  - Study of Multi-phonon interactions and explosive instabilities of ultrasound in solid media
  - Quasi-phonon crystals tunable and reconfigurable
  - Magnetic-acoustic phase conjugation (wavefront flipping and giant coherent amplification) and applications to ultrasonic nonlinear imaging and therapy
  - Nonlinear ultrasonic imaging and characterization of complex liquid flows by magneto-acoustic phase conjugation: mapping the velocity distribution of a complex liquid flow, simultaneous measurements of flow velocity and concentration of a second phase in the case of two-phase media, characterization of decompressed liquid flows with gaseous micro-nano-bubbles, ultrasonic tomography of complex flows
  - Nonlinear imaging and ultrasonic non-destructive testing of defects (using a method combining acoustic time-reversal and nonlinear elastic wave spectroscopy techniques) and contact modeling
  - Modeling of multiphysics composite materials and structures (e.g. magneto-elasto-ferroic)
• Flexible Electronics/MEMS:
  - Micro-sensor and micro-actuator arrays based on ultra-flexible polymer thin films
  - Touch interfaces with high integration density
  - Ultra-flexible microwave devices mechanically reconfigurable: mechanically reorientable or frequency-tunable 60 GHz antennas, and mechanically adjustable 60 GHz phase shifters
• Functional microfluidics, interface dynamics, MEMS for flow controls:
  - Acousto-fluidics at small scales: manipulation of drops and fluids by surface acoustic waves in nonlinear regime, acoustic generation by two-phase microflows, statistical methods for prediction of acoustic propagation in bubble media
  - Study of Faraday instabilities in microgravity and ultrasonic tomography analysis of instabilities
  - Networks of Microactuators and Micro MEMS sensors for controls of aerodynamic flows (aeronautical or automotive disbond controls)

> Download a summary 2013-2018 of the activity of the group AIMAN-FILMS

Publications du groupe AIMAN-FILMS