Dip Pen Nanolithography (DPN), a direct-write soft lithography method, is used to develop nanostructures on a preferred substrate by offering sets of molecules through capillary transport from an ...

(Nanowerk News) Graphene emerges as a versatile new surface to assemble model cell membranes mimicking those in the human body, with potential for applications in sensors for understanding biological ...

Reed and feather pens started to vanish in 1828 when John Mitchell, from Birmingham, made the first machine-made steel pen point for dip pens. But dipping the pen in ink frequently was a pain, and it ...

Long before the ballpoint pen and the fountain pen, letters were written by dip pens or nib pens. Early pens were simple. They were just a holder and a point. There was no ink reservoir. Geese or swan ...