The major focus of LOTO-eng is to support with his instrumentation the study the physical properties of condensed matters under extreme conditions such as high and low temperature, high pressure combined with high magnetic field. Under these conditions, novel phenomena and new concepts can be simulated in strongly correlated electron systems of different dimensionality.
Main Content
Diamond Anvil Cells are among the most powerful tools employ ed in High-Pressure research. They allow to attain static pressuresup to several hundreds of kilobar by compression of small volume samples
The two diamonds faces must be parallel. The alignment is considered perfect when the fringe width is greater than the anvil at diameter and no fringe is visible
A metal gasket between the two diamonds is to provide an indenting shape to prepare it for the drilling hole, the chamber for mrdium to get, under force on diamonds, an hydrostatic pressure
The measure of thikness of indenting is a way to control the free room space able to sizing the sample and ruby sphere. The gasket thikness can depend from kind of material, material and force on diamonds
Drilling a tiny hole through the indented gasket is the main task asked to the drilling machine. Careful and precision to realize the hole in the center of gasket of right dimater for your needs.
The role of conning media is to transmit pressure to the sample. Weak solids and liquids are typically used. "Gasses" such as Ne, Ar, or N2 are a highly desirable conning media.
The pressurizing mechanism is simply to put a force on the top of diamonds by the cell’s components. The pressurizing mechanism can be by screws or remotely by a membrane control.
Resistance heating is accomplished by heating and is controlled by a power supply. The designs heat the entire body of the DAC and other designs ow current through the gasket material
Ruby uorescence is used for pressure measurement. Measuring the position of the uorescence lines of Ruby, the positions of which are known as a function of pressure.
What’s new
The HT DAC cell in vacuum room at Elettra x-press beam line. The system include an “High Temperature DAC cell” insert in a Vacuum vessel. The pressure is driven bay a membrane controlled remotely.The high-performance heating method use two resistive heaters controlled by a power supply. A band-heater is mounted around the DAC body and […]
Electro Discharge Machine EDM
Electro Discharge Machine EDM The electro discharge machine type SEC 400 spark eroder is an upgrade with new concepts and solutions with decisive advantages. Is used in DAC’s cell utility for a fast and easy drilling of the gasket with different materials. The bottom camera is one of the main features to avoid misaglignment. The […]