Abstract: The present disclosure provides systems and methods for producing a volume of substantially all armchair nanotubes of a preselected chirality for fabricating yarn consisting of substantially all metallic conducting armchair tubes. The systems and methods can be used for the synthesis of (10,10), (11,11), and (12,12) metallic armchair carbon nanotubes and potentially other chiralities. The elements of the present disclosure include: (i) a carbon source that provides substantial numbers of ethylene and acetylene radicals in combination with a high population of ethylene groups and a small amount of methane, (ii) a hydrogen to carbon ratio sufficient to “passivate” all other chiral growth sites to a higher degree than armchair growth sites, and (iii) a CVD process that can be tuned to create a well-controlled population of catalyst with tight diameter distribution with sparse modal distribution that falls within a range of the desired single wall diameters.

Abstract: A fabric containing nanotubes which is impervious to viruses, bacteria, and other pathogens; which is self-sterilizing and reusable; and a method of producing the same are disclosed. The fabric can be used to construct facemasks, gloves, protective suits, protective habitats, continuous air filtration/sterilization systems or any other type of protective clothing or structure. The fabric may have integrated temperature monitoring sensors. The fabric may be made into patches which may be integrated into existing articles of clothing. When connected to an electrical power source, either via built-in electrical connections or by induction, the active layer which is one of the components of the fabric will heat to a temperature high enough to eliminate potential biological contamination from viruses, bacteria and other microbial threats. Combining the CNT active layer with an insulating layer will allow a garment to be continuously worn or used without needing removal during multiple sterilization cycles.

Abstract: Fiber emitters, such as carbon nanotube (CNT) yarns, are used to create infrared (IR) transmitters that can operate at high data rates, can shift spectral response, and can emit polarized light, for example by alignment of the fiber emitters in close proximity and in parallel directions. These fiber emitters can, for example, be used in patches that can be bonded to fabric or to an object, or can be woven into fabric during fabrication of a textile. The fiber emitters can be used in a variety of methods, including for friend or foe identification, communications, and identification of objects.