Concept

Ultrasonic transducer

Related publications (90)

Development of Miniature Manipulators for Applications in Biology and Nanotechnologies

In the precision engineering industry, research and development is undertaken towards the development of microfactories, miniaturized environments for fabrication and assembly of small components. Micro handling and micromanipulation, especially in biology ...

2003

Onboard Measurements of Pressure and Strain Fluctuations in a Model of low Head Francis Turbine. Part 1 : Instrumentation

François Avellan, Mohamed Farhat, Michel Couston, Silvia Natal

In this first part of a 2 papers series, we present the experimental procedure for onboard measurement of pressure and strain fluctuation in a model of low head Francis turbine. 28 miniature pressure sensors are fitted in the pressure and suction sides of ...

International Association For Hydraulic Research2002

Prolactin signaling and Stat5: going their own separate ways?

Cathrin Brisken, Ayyakkannu Ayyanan

Miyoshi et al. compared the role of the prolactin receptor (PrlR) and its downstream mediator, the signal transducer and activator of transcription 5 (Stat5), in mammary epithelial cells in vivo by studying PrlR-/- and Stat5ab-/- mouse mammary epithelial t ...

2002

Biomechanical adaptation of porcine carotid vascular smooth muscle to hypo and hypertension in vitro

Nikolaos Stergiopoulos, Martin Zulliger

Previous research in arterial remodeling in response to changes in blood pressure seldom included both hyper- and hypotension. To compare the effects of low and high pressure on arterial remodeling and vascular smooth muscle tone and performance, we have u ...

2002

On-line conversion monitoring through ultrasound velocity measurements in bulk styrene polymerization in a recycle reactor - part I: experimental validation

Albert Renken, Thierry Meyer

Ultrasound propagates through an elastic medium at a rate or speed named the ultrasound propagation velocity (UPV). This velocity is detd. by the rate at which the wave energy is transmitted, inversely related to the square root of the d. and compressibili ...

2000

Piezoelectric thin films for MEMS

Paul Muralt

A short overview is given on deposition and integration of PZT thin films on silicon for MEMS applications. The application principles are explained and the piezoelectric coefficients are compared with the ones of AlN and ZnO. The materials figure of merit ...

1997

X-ray diffraction study of magnesite at high pressure and high temperature

Philippe Gillet

P-V-T measurements on magnesite MgCO3 have been carried out at high pressure and high temperature up to 8.6 GPa and 1255 K, using a DIA-type, cubic-anvil apparatus (SAM-85) in conjunction with in situ synchrotron X-ray powder diffraction. Precise volumes a ...

1997

Microfabricated Lamb wave device based on PZT sol-gel thin film for mechanical transport of solid particles and liquids

Nava Setter, Georges-André Racine

The fabrication using silicon micromachining and characterization of an acoustic Lamb wave actuator is presented. The intended use of the device is for mass transport and sensor applications. The device consists of dual interdigitated transducers patterned ...

1997

Non-invasive estimate of the mechanical properties of peripheral arteries from ultrasonic and photoplethysmographic measurements

Jean-Jacques Meister

The non-linear elastic response of arteries implies that their mechanical properties depend strongly on blood pressure. Thus, dynamic measurements of both the diameter and pressure curves over the whole cardiac cycle are necessary to characterise properly ...

1991

Characterizing Bubbles in Bioreactors Using Light or Ultrasound Probes - Data-Analysis by Classical Means and by Neural Networks

Jonathan Bryan Lister

The applicability of neural networks to a typical biochemical engineering problem was investigated. The data treatment required for a novel technique for measuring the mean bubble size and the specific interfacial area in aerobic bioreactors was chosen as ...

1991

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