Massachusetts Institute of Technology

John B Vandersande

Gregory J Yurek

Jack B Howard

Murray J Height

Toshihiro Kogure

Method and apparatus for producing filamentary structures. The structures include single-walled nanotubes. The method includes combusting hydrocarbon fuel and oxygen to establish a non-sooting flame and providing an unsupported catalyst to synthesize the filamentary structure in a post-flame region of the flame. Residence time is selected to favor filamentary structure growth.

Method and apparatus for synthesizing filamentary structures

A method of preparing a superconducting oxide by combining the matalic elements of the oxide to form an alloy, folled by oxidation of the alloy to form the oxide. Superconducting oxide-metal composites are prepared in which a noble metal phase intimately mixed with the oxide phase results in improved mechanical properties. The superconducting oxides and oxide-metal composites are provided in a variety of useful forms.

Preparation of superconducting oxides and oxide-metal composites

Disclosed are a composition and a method of preparing a composition of the formula R.sub.2 Q.sub.4 Cu.sub.7 O.sub.x, wherein R is a rare-earth ion or a mixture of rare earth ions, and Q is Ba, or Ba combined with either Sr or Ca or both Sr and Ca. Such compositions have a unique crystalline structure and are superconducting oxides.

Superconducting 2-4-7 oxides

A method of preparing a superconducting oxide by combining the metallic elements of the oxide to form an alloy, followed by oxidation of the alloy to form the oxide. Superconducting oxide-metal composites are prepared in which a noble metal phase intimately mixed with the oxide phase results in improved mechanical properties. The superconducting oxides and oxide-metal composites are provided in a variety of useful forms.

Growing community of inventors

Newbury, MA, United States of America

John B Vandersande