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Improved Method for Diamond Seeding Surfaces

IP.com Disclosure Number: IPCOM000119467D
Original Publication Date: 1991-Jan-01
Included in the Prior Art Database: 2005-Apr-01
Document File: 1 page(s) / 27K

Publishing Venue

IBM

Related People

Cuomo, JJ: AUTHOR [+2]

Abstract

This method for applying diamond seeds and liquid removal is an improvement over previous methods for seeding surfaces for diamond film growth. Prepare a mixture of about one gram of 0.1 micron diamond in one liter of ethyl alcohol ultrasonically mix place a sample to be seeded 3.5 cm parallel to a counter electrode and connected to a DC power supply with 50 volts applied submerse the electrodes in the mixture for 30 seconds turn off power supply and remove the seeded sample while maintaining a cap of alcohol and a horizontal position spin remove the excess liquid at 5000 rpm for about 5 seconds

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Improved Method for Diamond Seeding Surfaces

      This method for applying diamond seeds and liquid removal is an
improvement over previous methods for seeding surfaces for diamond
film growth.
    Prepare a mixture of about one gram of 0.1 micron diamond in one
liter of ethyl alcohol
    ultrasonically mix
    place a sample to be seeded 3.5 cm parallel to a counter
electrode and connected to a DC power supply
    with 50 volts applied submerse the electrodes in the mixture for
30 seconds
    turn off power supply and remove the seeded sample while
maintaining a cap of alcohol and a horizontal position
    spin remove the excess liquid at 5000 rpm for about 5 seconds

      The voltage, time and electrode distance can be varied to alter
the seeding density and quality.

      Due to the improved coverage and seed uniformity, the diamond
films grown on these surfaces show early coalescence of the growing
film that are smoother than previously shown.

      Disclosed anonymously.