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Highly Oriented Pyrolytic Graphite (HOPG-Grade A)

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SKU# GHOA

HOPG

Product Detail

CAS-No.: 7440-44-0 

Highly oriented pyrolytic graphite (HOPG) is a metal consisting of multiple layers held together via Van der Waals forces. Individual 2D layers can be easily cleaved and exfoliated from the stack. Each layer looks like a mosaic of microscopic crystal grains of varying sizes. The overall structure is columnar and the columns run vertically on the flat surface. The surface of each layer resembles steps; single and multiple atomic steps are created during the cleaving process where single steps have a well-defined height of 0.34nm. HPOG is graded based on the angle of deviation of the grain’s boundaries from the perpendicular axis of the columns; this measure is called the mosaic spread. Highly ordered HOPG (Grade A) has a low mosaic spread. 

Find sheets of highly ordered pyrolytic graphite (Grade A) at ACS Material. Our grade A HOPG has a mosaic spread angle of 0.4° +/- 0.1° with virtually no visible steps on exfoliated faces. This grade is ideal for applications such as instrument calibration, X-Ray diffraction, and neutron scattering and diffraction.

Get your grade A HOPG from ACS Material today!

1. Properties

Appearance:

Black block

Purity:

>99.99%

Setting Angle:

0.5°±0.1°

Size:

10×10×1.0 mm

20×20×1.0 mm

20×20×(1.6-2.0) mm

2. Application Fields

1)     Scanning tunneling microscopy-callibration and substrates

2)     Graphite Monochromators

3)     X-Ray diffraction

4)     Neutron scattering and diffraction

 Disclaimer: ACS Material, LLC believes that the information in this Technical Data Sheet is accurate and represents the best and most current information available to us. ACS Material makes no representations or warranties either express or implied, regarding the suitability of the material for any purpose or the accuracy of the information contained within this document. Accordingly, ACS Material will not be responsible for damages resulting from use of or reliance upon this information.