Abstract: Methods for constructing multi-walled carbon nanotube (MWCNT) antenna arrays, may include: variable doping of the MWCNTs, forming light pipes with layers of variable dielectric glass, forming geometric diodes on full-wave rectified devices that propagate both electrons and holes, using clear conductive ground plans to form windows that can control a building's internal temperature, and generating multiple lithographic patterns with a single mask.

Abstract: A nail puller pulls nails from a board or the like by gripping the nail shank. The nail puller comprises a block with a gripping surface and a foot that is pivotally connected to the block. A long handle is joined to the foot. The foot and handle are pivotable to an open configuratoin whereat a space is defined between the block gripping surface and the foot. With the foot in the open configuration, the space is positioned over the nail shank, and the nail puller is lowered onto the board or the like. The handle and foot are pivoted to a closed configuration whereat the foot is proximate the block gripping surface to grip the nail shank therebetween. A strong force applied to the handle causes the block and foot to rotate as a unit about a fulcrum on the board or the like to pull out the nail. The undersurface of the block is curved such that the block rolls along the board or the like as it rotates to extract the nail. The foot or block gripping surface may be serrated to better grip the nail shank.