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Application Notes
Introduction
Carbon nanotubes (CNTs) are allotropes of carbon with a hollow cylindrical structure. Because CNTs feature extremely strong carbon-carbon bonding and excellent transport properties, CNTs have a wide variety of potential applications[1].
Chemical-vapor deposition (CVD) may be used to grow CNTs from a seeded substrate. Because of the significant relative density of CNTs originating from a growth substrate, resulting CNT arrays look like a fibrous carpet[2]. Within the array, Van der Waals forces bind nanotubes to each other.
CNT arrays have potential application beyond being a means for producing CNTs. CNT arrays, which provide a large surface area, may be used to efficiently dissipate heat. Single-walled CNTs feature a band gap that strongly depends on the chiral vector of individual tubes, so CNT arrays might potentially be used as conductors, semi-conductors, or insulators, especially within microelectronic devices. CNT arrays might also be useful as sensors, because conductivity depends strongly on mechanical strain. Successful incorporation of CNT arrays into a product requires the ability to both measure and control the mechanical properties of the CNT array as an array. Thus, the goal of the present work was to use a Keysight Technologies, Inc. NanoIndenter to mechanically characterize CNT arrays.
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