MHM Microtechnique & Ultrasonic Instrumentation

Development of NDT and NDE ultrasonic equipment | Development of non-invasive and non-destructive testing methods | Development of ultrasound spectroscopy techniques for material characterization, for on-line applications and for quality controls | Research support in ultrasonics diagnostic for rapid, in-line, dynamic, sizing, texture and structure analysis

Ultrasound in Nanotechnology


Ultrasound

The wavelenght of the ultrasonic waves is well within the range of the nanometer and the micrometer. Thus, the ultrasonic technology is well adapted to characterize particles, bubbles, defects or any discontinuties of that range.

It is since many years that MHM, through its Innovation Center, is equipped with a large library of ultrasonic sensors to carry out experiments within this range of sizes. Application of the correct model will then determine physical parameters such as: size, concentration, aggregation, cohesive force, shell thickness, distribution and shape giving information about the overall textural and structural properties of the material.

 

Particle detection

The past project we run at MHM with the MHM-ultrasonic device for the laboratory prospection successfuly detected in opaque liquids without dilution 3 kind of particles within the range of 100nm at a concentration of 100ppm, 10-20micron at the concentration of 1ppm and another type of 50micron at 250ppb where the density of the particle was almost the same as the density of the surouding due to cohesive forces.

 

High temperature measurement

The MHM-ultrasound device which was tranformed for successful pilot test to detect particles in the above projects was also adapted for measurement, at the lab scale and at the pilot scale, for high temperature measurement up to 260°C. Ultrasonic sensors are now under development for application up to 750°C.

 

Non-metallic foreign bodies detection

In the food industry, metallic foreign body are well detected using commercial systems already in use since many years. However, problems occur when the foreign body is organic because the density difference between the body and the surouding is so small that conventional techniques, X-Rays and NMR systems were not applicable. The MHM-ultrasound device showed promising results in that field. Improvment of tomographic analytical data is under consideration and pilot tests are on-going.

 

Counterfeighting

MHM is developping a cheap technique applicable to fight counterfeight products.

 

Do not hesitate to contact us

© MHM 2012MHM Microtechnique | Ch. du Bois 8, CP 39, CH-1303 Penthaz/VD Switzerland | +41 (0) 79 204 25 24 | mhm@romandie.com