Researchers at University of Tsukuba have demonstrated that graphitizing the fractured surface of a mechanical pencil lead enables the easy creation of axially oriented graphene edges, which serve as ...

Tsukuba, Japan—Nanocarbon materials with pointed geometries, such as graphene and carbon nanotubes, are considered promising candidates as sources for field emission electrons. However, their ...

Forty-three years ago Dave Dunwoodie began tinkering with the bits of electric guitars, finding innovative ways to solve age-old problems, such as strings binding on traditional guitar nuts. Nuts are ...

Anyone who works in wood can tell you most carpentry gigs require access to a handful of tools with obvious, if vital, uses. One that's particularly easy to overlook is the woodworking pencil. After ...

Abstract: In this letter, we introduce a self-calibrating electrochemical sensor for water acetaminophen (ACT) detection. The sensor is built upon a graphite pencil lead (GPL) electrode modified with ...

Don’t get me wrong, I’m glad I had no cause to get a cast as a kid ― but I have to admit I longed for the glamour of it. After all, certain wounds (including the graphite from a pencil getting ...

Plasma irradiation removes graphite from the pencil lead, exposing a thin layer of clay. By controlling the exposure time, the thickness of this layer can be varied to modulate the infrared (IR) ...

If you need a potentiometer for a project, chances are pretty good that you’re not going to pick up a pencil and draw one. Then again, if you’re teaching someone how a variable resistor works, that ...