Single Crystal Diamonds (SCD)/ CVD from READE

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Reade Advanced Materials Offers:

Single Crystal Diamonds (SCD)

Single Crystal Diamond (SCD) Synonyms:

Single crystal diamond, SCD, synthetic single crystal diamond,
CVD diamonds, natural single crystal diamond, single crystal diamond films
Single Crystal Diamond (SCD) Designations:

Chemical Name: Carbon

Chemical Formula: C

Single Crystal Diamond (SCD) Description:

Synthetic single crystal diamond is a manufactured product for industrial applications, produced by:
a) High pressure / high temperature (HPHT) synthesis process and tightly controlled crystal growth conditions. Repeatable physical characteristics and dimensional consistency are the notable features of a synthetic single crystal diamond.
b) Chemical vapor deposition

Single Crystal Diamond (SCD) Chemical Properties Available:

Single crystal diamonds are possibly available in natural or synthetic form.

Physical Grit Ranges Available:

50/ 60, 60/ 70, 70/ 80, 80/ 100, 100/ 120, 120/ 140, 140/ 170, 170/ 200, 200/ 230, 230/ 270, 270/ 325, 325/ 400

Typical Applications:

"a) Diamond excels in its electronic properties. Fundamentally, it lets us move charge around much faster before things stop working. Diamond transistors can operate at much higher temperatures because diamond has a larger "bandgap" than other materials (particularly silicon). Because diamond has a wider bandgap, it shorts out at a proportionally higher temperature than silicon.

b) Diamond also has greater thermal conductivity, which lets us move heat out of a diamond transistor more quickly to prevent it from getting too hot. Finally, electrons (and holes) move with different speeds through different materials, even when the electric field is the same. Again, electrons and holes in diamond move faster than in silicon.

c) Because diamond transistors can be hotter, are more easily cooled, can tolerate higher voltages before breaking down, and electrons move more easily in them; they make better transistors than other materials. Diamond would be ideal for electronic devices if only we could manufacture it inexpensively and with precisely the desired structure" Source: Ralph Merkle

d) Other potential markets include: cutting tools, heat spreaders, electrical devices, semiconductors, microwave communications, solar blind UV sensors, CO₂ laser windows and RF and microwave devices.

The Manufacture of CVD Diamonds:
a) Inside a vacuum chamber, they place small "seeds" of natural diamond on a tray. Hydrogen and methane gas are injected into the chamber. The gases are heated by a microwave beam. As they approach 1,800 degrees, the gases are excited into a glowing purple plasma, and single atoms of carbon begin to "rain" from the plasma onto the diamond seeds. The carbon atoms affix themselves to the seeds, layer upon layer.

b) In five days, the process can produce a quarter-carat gemstone. Once the stone is removed from the reactor, the new diamond is cut from the seed by a powerful laser. The seed can then be used again.

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Packaging:

Generally, to a customers specification..

TSCA (SARA Title III) Status:

Listed. For further information please call the E.P.A. at 1.202.554.1404

CAS Number:

7440-44-0

UN Number:

UN 1325

East Coast: (401) 433-7000 West Coast: (775) 352-1000