Abstract: The separation of single-walled carbon nanotubes (SWNTs), by chirality and/or diameter, using centrifugation of compositions of SWNTs in and surface active components in density gradient media.

Abstract: The separation of single-walled carbon nanotubes (SWNTs), by electronic type using centrifugation of compositions of SWNTs and surface active block copolymers in density gradient media.

Abstract: Atomic force photovoltaic microscopy apparatus and related methodologies, as can be used to quantitatively measure spatial performance variations in functioning photovoltaic devices.

Abstract: In one aspect, the present invention provides a method of forming a film of nanocomposites of carbon nanotubes (CNTs) and platinum (Pt) nanoparticles. In one embodiment, the method includes the steps of (a) providing a first solution that contains a plurality of CNTs, (b) providing a second solution that contains a plurality of Pt nanoparticles, (c) combining the first solution and the second solution to form a third solution, and (d) filtering the third solution through a nanoporous membrane using vacuum filtration to obtain a film of nanocomposites of CNTs and Pt nanoparticles.

Abstract: A method of forming a nanoscale pattern on a substrate surface. In one embodiment, the method includes the steps of providing a substrate having a surface; providing a nanoscale pattern forming device, comprising an elongated cantilever that has a tip portion proximate an end of the elongated cantilever; and controllably illuminating at least the tip portion of the cantilever with a beam of substantially coherent monoenergetic particles when the cantilever moves relative to the substrate to form a nanoscale pattern on the surface, wherein the tip portion of the cantilever is made from lightly doped silicon.

Abstract: The present teachings provide methods for providing populations of single-walled carbon nanotubes that are substantially monodisperse in terms of diameter, electronic type, and/or chirality. Also provided are single-walled carbon nanotube populations provided thereby and articles of manufacture including such populations.

Abstract: The separation of single-walled carbon nanotubes (SWNTs), by chirality and/or diameter, using centrifugation of compositions of SWNTs in and surface active components in density gradient media.

Abstract: The present teachings provide, in part, methods of separating two-dimensional nanomaterials by atomic layer thickness. In certain embodiments, the present teachings provide methods of generating graphene nanomaterials having a controlled number of atomic layer(s).

Abstract: Self-assembled organic monolayers on epitaxial graphene are described. The organic molecules are perylene derivatives including 3,4,9,10-perylene-tetracarboxylic dianhydride (PTCDA) molecules arranged in a herringbone phase and/or molecules are of the following formula: wherein R1 and R2 are alkyl groups. The organic monolayers can be patterned. Metal oxides can also be deposited on the organic monolayers. Methods of forming the self-assembled organic monolayers are also described.

Abstract: An article of manufacture comprising a nanowire and methods of making the same. In one embodiment, the nanowire includes a Ga-doped trace formed on a surface of an indium oxide layer having a thickness in nano-scale, and wherein the Ga-doped trace is formed with a dimension that has a depth is less than a quarter of the thickness of the indium oxide layer. In one embodiment, the indium oxide layer, which is optically transparent and electrically insulating, comprises an In2O3 film, and the thickness of the indium oxide layer is about 40 nm, and the depth of the nanowire is less than 10 nm.

Abstract: A method of functionalizing carbon nanotubes with metallic moieties is disclosed. Carbon nanotubes are first associated with one or more binding moieties to provide carbon nanotubes encapsulated by the binding moieties. The encapsulated carbon nanotubes are then contacted with a metal salt or a metal complex that binds to the binding moieties. Reduction of the metal salt or metal complex provides carbon nanotubes functionalized with metal nanoparticles.

Abstract: Nanoscale impedance microscopy and related methods, circuit and/or apparatus capable of quantitatively measuring magnitude and phase of alternating current flow.

Abstract: The present teachings provide methods for sorting nanotubes according to their wall number, and optionally further in terms of their diameter, electronic type, and/or chirality. Also provided are highly enriched nanotube populations provided thereby and articles of manufacture including such populations.

Abstract: The separation of single-walled carbon nanotubes (SWNTs), by chirality and/or diameter, using centrifugation of compositions of SWNTs in and surface active components in density gradient media.

Abstract: The separation of single-walled carbon nanotubes (SWNTs), by chirality and/or diameter, using centrifugation of compositions of SWNTs in and surface active components in density gradient media.

Abstract: A method of forming a nanoscale pattern on a substrate surface. In one embodiment, the method includes the steps of providing a substrate having a surface; providing a nanoscale pattern forming device, comprising an elongated cantilever that has a tip portion proximate an end of the elongated cantilever; and controllably illuminating at least the tip portion of the cantilever with a beam of substantially coherent monoenergetic particles when the cantilever moves relative to the substrate to form a nanoscale pattern on the surface, wherein the tip portion of the cantilever is made from lightly doped silicon.

Abstract: Various methods related to the preparation of transparent electrical conductors based on carbon nanotubes having enhanced optical and electrical properties are disclosed. In some embodiments, the methods involve employing carbon nanotubes that have been presorted according to electronic type and/or optical absorbance for use in transparent electrical conductors. Other embodiments involve use of carbon nanotube bundles that have been pre-sorted according to bundle density.

Abstract: The present teachings provide methods for providing populations of single-walled carbon nanotubes that are substantially monodisperse in terms of diameter, electronic type, and/or chirality. Also provided are single-walled carbon nanotube populations provided thereby and articles of manufacture including such populations.

Abstract: A cryogenic variable temperature scanning tunneling microscope of novel design and component configuration, for use in conjunction with a variety of low temperature methodologies.

Abstract: A conductive atomic force microscopy (cAFM) technique which can concurrently monitor topography, charge transport, and electroluminescence with nanometer spatial resolution. This cAFM approach is particularly well suited for probing the electroluminescent response characteristics of operating organic light-emitting diodes (OLEDs) over short length scales.