University of Illinois

Northwestern University

University of Miami

William L Wilson

John A Rogers

Yonggang Huang

Jizhou Song

Ahmad Ehteshamul Islam

Frank Du

Sung Hun Jin

Simon N Dunham

Xu Xie

Placid M Ferreira

Kimani C Toussaint

Amy Wagoner Johnson

The present invention provides methods for purifying a layer of carbon nanotubes comprising providing a precursor layer of substantially aligned carbon nanotubes supported by a substrate, wherein the precursor layer comprises a mixture of first carbon nanotubes and second carbon nanotubes; selectively heating the first carbon nanotubes; and separating the first carbon nanotubes from the second carbon nanotubes, thereby generating a purified layer of carbon nanotubes. Devices benefiting from enhanced electrical properties enabled by the purified layer of carbon nanotubes are also described.

Purification of carbon nanotubes via selective heating

Methods and apparatus for characterizing a sample in situ as to both its mechanical and optical characteristics. The apparatus comprises a reflective microscope with a concave primary mirror and a convex secondary mirror sharing a common optical axis, and an actuator vignetted by the convex secondary mirror for applying a force to a nanoprobe in a direction having a component along the common optical axis. The apparatus may addition include a source for generating an illuminating beam, a detector, and a processor for forming an image based on a signal provided by the detector.

Nanoindenter multimodal microscope objective for mechanobiology

Growing community of inventors

Champaign, IL, United States of America

William L Wilson