I would say there are three important things about graphene. It's two-dimensional, which is the best possible number for studying fundamental physics. The second thing is the quality of graphene, which stems from its extremely strong carbon-carbon bonds. And finally, the system is also metallic.
Today's scientific question is: What in the world is electricity? And where does it go after it leaves the toaster?
All that glitters may not be gold, but at least it contains free electrons.
Alternate currents, especially of high frequencies, pass with astonishing freedom through even slightly rarefied gases. The upper strata of the air are rarefied. To reach a number of miles out into space requires the overcoming of difficulties of a merely mechanical nature.
Notwithstanding my experiments with electricity the thunderbolt continues to fall under our noses and beards; and as for the tyrant, there are a million of us still engaged at snatching away his sceptre.
Superconductivity helped broaden my professional phase space. When I started my work, it was already known that magnetic fields could quench superconductivity. I found that the transition was not continuous, that superconductivity was initially enhanced in the presence of magnetic fields, then it would suddenly fall off.
Gold--what can it not do, and undo?
Ohm (a distinguished mathematician, be it noted) brought into order a host of puzzling facts connecting electromotive force and electric current in conductors, which all previous electricians had only succeeded in loosely binding together qualitatively under some rather vague statements. Even as late as 20 years ago, "quantity" and "tension" were much used by men who did not fully appreciate Ohm's law.
We call that fire of the black thunder-cloud "electricity," and lecture learnedly about it, and grind the like of it out of glass and silk: but what is it? What made it? Whence comes it? Whither goes it?
Graphene is a single plane of graphite that has to be pulled out of bulk graphite to show its amazing properties.
If anyone should doubt whether the electrical matter passes through the substance of bodies, or only over along their surfaces, a shock from an electrified large glass jar, taken through his own body, will probably convince him.
There's a metal train that a mile long and at the very back end a lightning bolt struck her. How long til it reaches and kills the driver, provided that he's a good conductor?
Electricity was a reality in the universe when Moses led the children of Israel out of the land of Egypt. This is true of all natural laws; they have always existed but only when understood may they be used.
We believe that electricity exists, because the electric company keeps sending us bills for it, but we cannot figure out how it travels inside wires.
Electrons are the carriers for electricity, but they are also carriers for thermal energy. This means thermal conductivity is increased when the carrier density is increased.
The transitions from metallic to critical behavior and from critical to insulating behavior have been induced with a magnetic field, and from insulating to critical and then to metallic behavior with increasing external pressure.
With the assistance of electrical conductivity, we were able to trace by measurements the process of intercalation in a large number of cases and, consequently, to establish experimental foundations for the evaluation of the formation of such intercalation compounds.
