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THE SUPERIOR NANO MATERIAL: Nano Graphene Platelets (NGP) outperforms Carbon NanoTubes (CNT)

The Nano Graphene Platelets (NGP) material discovered in 2004 has been studied for a number of years. It has many of the same characteristics as Carbon Nano Tubes (CNT) and other carbon particles; NGPs overall performance equals or exceeds most application performances when compared with any other Nano particles. Nano Graphene Platelets are also known as Graphene Nanoplatelets. Carbon Nano Tubes are also known as Carbon Nanotubes.

According to some studies, composites when infused with NGP are stiffer and less prone to failure than composites infused with carbon nano tubes or other nanoparticles. These gains are in the area of 1 order of magnitude.

When added to polymers, NGPs mechanical strength exceeds that of Carbon Nano Tubes (CNT). NGP and CNT can have similar functionalization or surface treatments to improve mechanical bonding and electrical characteristics. NGPs superior shape (grid like or fence shape) gives a better mechanical attachment than the CNT tubular shape, this unique shape gives NGP significantly higher strength, puncture and crack resistances, as well as excellent permeability barrier properties. These improved properties can be seen in a host of different materials.

Super capacitors can perform better when made with NGP. NGP based nanocomposite materials exhibit high levels of capacitance and electrical conductivity as well as demonstrating chemical stability and low mass density. The conductive film is superior because of the unique molecular shape of the particles, which can store more electrons than other known materials.

When adding 1% to 2 % NGP by volume to aluminum the electrical conductivity and strength are improved significantly.

References and Additional Resources Graphene Outperforms Carbon Nanotubes for Creating Stronger, More Crack-Resistant Materials by Professor Nikhil Koratkar April 26, 2010 http://news.rpi.edu/update.do?artcenterkey=2715 Angstron Materials Inc. http://angstronmaterials.com/

By David Graber in association with Nano Enhanced Wholesale Technologies, LLC http://www.nano-enhanced-wholesale-technologies.com/

About the Author

David Graber is in association with Nano Enhanced Wholesale Technologies, LLC http://www.nano-enhanced-wholesale-technologies.com/

Cylindrical Capacitors and dielectrics?

A Geiger tube consists of a wire of radius R=0.2mm, length L=12cm, and a coaxial cylindrical shell conductor of the same length L=12cm with a radius of 1.5cm.

(a) Find the capacitance, assuming that the gas in the tube has a dielectric constant of kappa=1.
(b) Find the charge per unit length on the wire, when the potential difference between the wire and shell is 1.2kV

♠ C=2pi*ε0 *kappa *L/ln(R2/R1), where ε0=8.854·10^(-12), L=12 cm= 0.12m, R1=0.2 mm =0.0002 m, R2=1.5 cm=0.015 m;
thus C=2pi* 8.854·10^(-12) *1*0.12 /ln(0.015/0.0002) = 1.55·10^(-12) Farad;
♣ Q=C*V =1.55·10^(-12) *1.5·10^3 = 2.32·10^(-9) Coulomb;
thus q=Q/0.12 = 1.93·10^(-8) C/m;