bagaimana cara membuat crystal

eltoro · Post time 10-8-2012 01:35 AM

Today we’ll visit an institute in Novosibirsk to see how they grow crystals the quality of which is considered the best in the world.

Institute of Inorganic Chemistry was founded in Novosibirsk in 1957. It conducts fundamental and applied investigations in the sphere of inorganic chemistry such as electronic composition of inorganic substances, technology of functional materials, processes of separation and cleaning of substances, etc.

Laboratory where they study the chemistry of polynuclear metallic and organic entities.

Employees are busy with synthesis and investigation of new compounds that possess unusual properties and can be useful in practice due to their magnetic and structural properties. These are often metallo-organic compounds. Some approaches to acquisition of unusual complexes were developed in this laboratory for the first time in history.

Glove cabinet here is as important as the stove in a kitchen.

With the help of the cabinet one can examine a new instable metallo-organic compound reducing the standard procedures of preparation for an experiment to minimum.

With the help of the cabinet one can examine a new instable metallo-organic compound cutting the standard procedures of experiment preparation to minimum.

Bruker DUO APEX X-ray diffractometer provides the scientists with information on the structure of crystal objects.

Increased image of a diffraction unit.

Usual instruments of a crystallographer.

The most difficult part about the experiment is to choose a proper crystal. A crystal is usually chosen with the help of an optical microscope. A selected crystal is glued to a glass stick of 0,02-0,04 mm in diameter.

Now we’ll visit an analytical laboratory. Here they develop methods of quantitative chemical analysis of functional materials, biological and natural objects,etc.

Atomic-emission spectral analysis (AESA) with plasma sources of spectrum excitation, namely, inductively bound plasma.

Mass spectrometry with laser source of ionization.

AAS with plasma and electrothermal atomisation.

Samples are chemically processed in special boxes. The boxes are also used to clean glassware.

The scientists obtain bismuth oxide, tungsten oxide, etc. of high purity that are later used to get mono-crystals with unique optical properties. These are crystals of the highest quality as compared to those developed by the leading foreign laboratories. They are widely ordered by the European Space Agency, Los Alamos National Lab of the USA, and other scientific centers of the world.

They produce very big crystals and joke that their crystals could be even bigger if the ceilings were higher.

This one weighs 52 kg.

Now look at the photos of finished products made of BGO crystals.

CdWO4 pixels for the customs control system produced in Russia.

BGO elements used in a detection appliance that determines the concentration of alpha-, beta- and gamma-emitting nuclide in aerosols at A-plants.

Books written by D.I. Mende