CNRS Technologies

Find the best CNRS technologies to boost your innovative project.

Newest patents

You are a research scientist?

We can guide you through the whole technology transfer process.

See all our services

You are a corporate player?

Thanks to our expertise, our network and our know-how of the innovation ecosystem, we support you throughout your project.

Contact us

Follow our news and upcoming events

Discover CNRS technologies

Meet our team

Close

Dynamical diamond anvill cell

Reference

03362-01

Patents status

French patent application FR1003368 filed on August 13th, 2010 and entitled “Cellule à enclumes, notamment susceptible de fonctionner en mode dynamique”

Inventors

Hélène BUREAU
Stefan KUBSKY

Laboratory

Description

CONTEXT

A diamond anvil cell (DAC) is a system that allows compressing a small (sub-millimeter sized) piece of material to pressure and temperature conditions into a gasket (metallic in most of the cases) placed between the two anvils. Pressure can exceed 3,000,000 atmospheres (300 gigapascals).

Among experiences one can cite creating the pressure existing  deep inside the Earth, studying mater at extreme conditions, i.e. phases not observed under ambiant conditions. Various measurements can be performed during the experiment like raman, infrared of X-rays spectroscopies… One important limitation to this equipments is due to a generally static functionning. Although a dynamic equipment has been proposed in 2007 by WJ Evans, this allows only small decreases of pressure. The joint placed between the two anvils as well as other parts of the cell, in particular metallic ones, are deformed and consequently the pressure really exercised between anvils varies without control; a misalignment of anvils can also provoke their damage, and even lead to their break.

TECHNICAL DESCRIPTION

In order to avoid such limitations of DAC, the equipment proposed here consists of a diamond support laterally fixed during use, a mobile deck and at least one piezoelectric actuator. A convenient design of the system allows to dynamically control the real pressure applied to the sample loaded in the cell and the alignment of the diamonds.

BENEFITS

* Dynamical variation (+ or -) of pressure
Continuous control of the real pressure in the cell
Supression of hysteresis effects
* Control of misalignment of diamonds during the process  

INDUSTRIAL APPLICATIONS

* Production of new materials
* R&D

For further information, please contact us (Ref 03362-01)


Need further information ?

Contact us
Close

Contact us

  • This field is for validation purposes and should be left unchanged.
Close

Newest patents