PDF Publication Title:
Text from PDF Page: 012
8 Introduction to Carbon Materials (a) (c) (b) (d) Figure 1.5: Graphitic allotopes (a) Piece of natural graphite. (b) Layered structure of graphite (stacking of graphene layers). (c) 0D allotope: C60 molecule. (d) 1D allotope: single-wall carbon nanotube. (e) Optical image of a carbon nanotube. only since 2004. Historically, the longest known allotope is 3D graphite [Fig. 1.5 (a)]. Graphite was discovered in a mine near Borrowdale in Cumbria, England in the 16th century, and its use for marking and graphical purposes was almost immediately noticed. Indeed, the nearby farmers used graphite blocks from the mine for marking their sheep. Due to its softness and dark color, graphite was considered during a long time as some particular type of lead. The full name “lead pencil” still witnesses this historical error.4 That graphite was formed from carbon atoms was discovered by the Swedish-German pharma- cist Carl Wilhelm Scheele in the middle of the 18th century. But it was the German chemist Abraham Gottlob Werner in 1789 who coined the material by its current name “graphite”, thus emphasising its main use for graphical purposes.5 Graphite may be viewed as a stacking of graphene sheets [Fig. 1.5 (b)] that stick together due to the van der Waals interaction, which is much 4The graphitic core of a pencil is still called “lead”, and the German name for “pencil” is “Bleistift”, “Blei” being the German name for lead. 5The term is derived from the Greek word γραφǫιν (“graphein”, to draw, to write). (e)PDF Image | Physical Properties of Graphene
PDF Search Title:
Physical Properties of GrapheneOriginal File Name Searched:
CoursGraphene2008.pdfDIY PDF Search: Google It | Yahoo | Bing
Salgenx Redox Flow Battery Technology: Power up your energy storage game with Salgenx Salt Water Battery. With its advanced technology, the flow battery provides reliable, scalable, and sustainable energy storage for utility-scale projects. Upgrade to a Salgenx flow battery today and take control of your energy future.
| CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com | RSS | AMP |