Microwave absorbing material (MAM) are the type of material which absorbs the electromagnetic waves and converts into thermal energy1. The MAM are used in military applications also used in EMI reduction, radio detection, antenna pattern shaping, microwave technology and radar cross reduction, etc.,2 Nanomaterials showcase a high potential in MAM due to their light weight, ability to absorb the broad band spectrum. Carbon nanotubes (CNT) is one of the important MAM. They offer high strength and toughness when it’s used in the composites.3
The studies have showcased that the single walled carbon nanotubes (SWCNT) can be used as the MAM due to their small diameter which offers a high aspect ratio compared to the multiwalled carbon nanotubes. SWCNT based nano composites showcased good microwave absorbing property. The increase of SWCNT content increased the microwave absorbing property. The study shows that by adjusting the nanotubes concentration the absorption peak can be easily tuned4.
A group of researchers have investigated the microwave absorption property of HiPCO® SWCNT along with the influence of catalyst particle that were used to produced. They indicated that the microwave loss due to Fe particles are not around 2.45GHz. The microwave absorption enhancement has been showcased with unpurified HiPCO® SWCNT compared to pure SWCNT. So the microwave absorption property is partially affected by the Fe particles and not playing a dominant role5.
NoPo Nanotechnology offers a small diameter of 0.6 to 1 nm HiPCO® single-walled carbon nanotubes (SWCNT) and has an incredibly good control over the production. The process can be modified to control amount of catalyst present in the material. The process can be tuned to achieve from 10% – 50% of catalyst particle in the as-produced nanotubes.
For more details, please contact us at www.noponano.com
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