Shaping material by acoustic energy

C - Chemistry – Metallurgy – 03 – B

Patent

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C03B 19/00 (2006.01) B01J 19/10 (2006.01) C03B 23/00 (2006.01) C03B 23/047 (2006.01) C03B 23/049 (2006.01) C03B 37/012 (2006.01) C03B 37/023 (2006.01) C03B 37/029 (2006.01)

Patent

CA 1091026

ABSTRACT OF THE DISCLOSURE A suspended mass is shaped by melting all of a selected portion of the mass and applying acoustic energy in varying amounts to different portions of the mass. In one technique for forming an optical waveguide slug, a mass of oval section is suspended and only a portion along the middle of the cross-section is heated to a largely fluid consistency. Acoustic energy is applied to oppo- site edges of the oval mass to press the unheated opposite edge portions together so as to form bulges at the middle of the mass. In another technique for forming a ribbon of silicon for construc- ting solar cells, a cylindrical thread of silicon is drawn from a molten mass of silicon, and acoustic energy is applied to opposite sides of the molten thread to flatten it into a ribbon.

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