The Texas A&m University System

Lehigh University

Carnegie Institution of Washington

Yingwei Fei

Kai Landskron

Philip Hemmer

Paritosh Mohanty

Viktor V Struzhkin

Todd Zapata

Nanodiamonds are grown under conditions where diamond-like organic seed molecules do not decompose. This permits engineered growth of fluorescent nanodiamonds wherein a custom designed seed molecule can be incorporated at the center of a nanodiamond. By substituting atoms at particular locations in the seed molecule it is possible to achieve complex multi-atom diamond color centers or even to engineer complete quantum registers. In addition, it is possible to grow ultra-small nanodiamonds, wherein each nanodiamond, no matter how small, can have at least one bright and photostable fluorescent emitter.

Engineered fluorescent nanodiamond

Compositions comprising nanoparticles (e.g., nanocrystals) of stishovite silica are described. Such nanoparticles may be made by (1) subjecting a mesoporous silica starting material (e.g., SBA-16 or KIT-6) to a pressure of less than about 20 GPa (e.g., about 12 GPa); (2) heating the mesoporous silica starting material while under pressure to an elevated temperature of less than about 1000&#xb0; C. (e.g., a temperature of between about 300&#xb0; C. and about 400&#xb0; C.); and thereafter isolating the nanoparticles. The nanoparticles may be used in a work tool that is configured and adapted for cutting, drilling, abrading, polishing, machining, or grinding, among other uses.

Ultrahard stishovite nanoparticles and methods of manufacture

Growing community of inventors

Potomac, MD, United States of America

Yingwei Fei