Abstract: In a general aspect, an apparatus can include a first carbon nanotube array that is patterned to define a first electrode having a first plurality of electrode segments. The apparatus can also include a second carbon nanotube array that is patterned to define a second electrode having a second plurality of electrode segments. The second plurality of electrode segments can be interdigitated with the first plurality of electrode segments. The apparatus can further include a biorecognition agent disposed on a surface of the first electrode and disposed on a surface of the second electrode. The first plurality of electrode segments can each have a height-to-width aspect ratio of at least 1 to 1.

Abstract: The present invention is a system and method for significantly improving gas chromatography resolution using a dynamic and non-linear thermal gradient along the entire column length and is achieved by decreasing the velocity of analytes when approaching the back end of the capillary column in order to compensate for an increase in velocity of carrier gas as the carrier gas expands when approaching the back end, and wherein the thermal gradient is selected so that the analyte achieves a constant velocity through the capillary column.

Abstract: A method includes coupling a radiator panel assembly to a component, and conducting heat from the component via a thermally conductive hinge into at least one base radiator panel in the radiator panel assembly. The method further includes placing the at least one base radiator panel in a position to radiate a fraction of the heat into space through a surface of the at least one base radiator panel, and dynamically varying the position of the at least one base radiator panel to vary an amount of heat loss through the at least one base radiator panel to regulate a temperature of the component.

Abstract: In a general aspect, an apparatus can include a first carbon nanotube array that is patterned to define a first electrode having a first plurality of electrode segments. The apparatus can also include a second carbon nanotube array that is patterned to define a second electrode having a second plurality of electrode segments. The second plurality of electrode segments can be interdigitated with the first plurality of electrode segments. The apparatus can further include a biorecognition agent disposed on a surface of the first electrode and disposed on a surface of the second electrode. The first plurality of electrode segments can each have a height-to-width aspect ratio of at least 1 to 1.

Abstract: In one general aspect, a flow-through sensor can include a carbon nanotube structure including a parallel array of micro-channels, a catalyst coupled to an inner surface of at least one of the micro-channels, and a functionalizing material disposed within the micro-channels.

Abstract: In one general aspect, a flow-through sensor can include a carbon nanotube structure including a parallel array of micro-channels, a catalyst coupled to an inner surface of at least one of the micro-channels, and a functionalizing material disposed within the micro-channels.

Abstract: In one general aspect, an apparatus can include a controller and a fuel container. The apparatus can include a propulsion device including a carbon nanotube structure including a parallel array of micro-channels configured to receive the fuel. Each of the micro-channels included in the array of micro-channels can have a length:width aspect ratio greater than 40:1 and can include a catalyst.