An illustrated encyclopedia of carbon — allotropes, artifacts, and the chemistry of everything dark and brilliant.
Eight faces of carbon — from kitchen charcoal to the stuff of rocket booms and pencil whispers.
Cn · hexagonal
Layers upon layers of hexagonal carbon sheets, bonded tightly in-plane and held loosely between. Slide one layer against another and you get the gray streak of a pencil — the quiet graffiti of human thought since 1565.
C · cubic (Fd-3m)
The same element as pencil lead, rearranged into a tetrahedral cathedral. Four bonds, no slack, no mercy. The hardest natural material on Earth — forged under pressures your bones could not even rehearse.
A tiny soccer ball of 60 carbon atoms — C60. Discovered in 1985 inside a simulated stellar atmosphere. Named after Buckminster Fuller, who never got to touch one.
A single atomic layer peeled from graphite with Scotch tape in 2004. One atom thick, 200× the strength of steel, conducts electricity like it has somewhere to be.
The oldest trick: roast wood without oxygen. What remains is near-pure carbon, porous as a rumor, hungry as any adsorbent on the planet.
Thousands of micron-thin strands of crystallized carbon, woven into the bones of race cars, bicycles, and the occasional concert hall roof.
single / multi-walled
Imagine taking a sheet of graphene and rolling it into a drinking straw two nanometers wide. Now imagine it's a hundred times stronger than steel and conducts electricity at room temperature. Welcome to the nanotube — the 21st century's favorite overachiever.
No order, no repeating lattice, no plan. Just carbon behaving like a crowd. Soot, lampblack, toner — the everyman allotropes.
A six-atom dance through oceans, leaves, and the occasional diesel engine.
Every carbon atom in your body was once, in some older life, folded into rock. Before that, perhaps air. Before that, the hot breath of a star. The carbon cycle is not so much a cycle as a dense, slow-motion traffic pattern across a dozen reservoirs: atmosphere, forests, soils, the shallow and the deep ocean, shells and shoots and bones and bones.
In photosynthesis, plants pluck CO2 from the air and thread it into sugars. Animals eat the sugars and exhale the carbon back out, slightly rearranged. Some carbon falls into the soil and, given the right geological patience, reappears millions of years later as a lump of coal, or a seam of graphite, or — with sufficient pressure — a diamond.
Humans have accelerated the cycle's fastest loop considerably. Since 1750 we have transferred roughly 700 gigatonnes of carbon from the slow reservoirs into the fast ones. The planet is noticing. The carbon, for its part, is indifferent. It has been through worse eras than this one, and will outlast us whether we apologize or not.
What is beautiful about the element, if "beautiful" is the word, is its patience. Four valences, one modest atomic number, and an almost infinite capacity for self-combination. From these simple rules come pencils, petroleum, proteins, and the sentence you are reading right now.
Editors, illustrators, and chemistry nerds who keep the lattice lit.
Crystallographer. Keeps the lattice entries honest. Fond of 3-ring binders.
1,204 edits
Caretaker of the fullerene family. Runs the nanotube stub list in her sleep.
918 edits
Amorphous carbon specialist. Writes the pages you read when it's raining.
612 edits
Makes the icons twitch. Argues that imperfection is a design signature.
455 edits