80-year-old mystery in static electricity finally solved

Historically, contact electrification (CE) was humanity's first and only source of electricity up until around the 18th century, yet its true nature is still elusive. Today it is considered a core component of technologies ...

Making 3D printing truly 3D

Don't be fooled by the name. While 3D printers do print tangible objects (and quite well), how they do the job doesn't actually happen in 3D, but rather in regular old 2D.

3D laser nanoprinters become compact

Lasers in conventional laser printers for paper printouts are very small. 3D laser printers for 3-dimensional microstructures and nanostructures, by contrast, have required big and expensive laser systems so far. Researchers ...

Scientists develop first electrically-driven 'topological' laser

Scientists and engineers from Nanyang Technological University, Singapore (NTU Singapore) and the University of Leeds in the U.K. have created the first electrically driven topological laser, which has the ability to route ...

Fastest high-precision 3-D printer

3-D printers working in the millimeter range and larger are increasingly used in industrial production processes. Many applications, however, require precise printing on the micrometer scale at a far higher speed. Researchers ...

New printer creates extremely realistic colorful holograms

Researchers have developed a new printer that produces digital 3-D holograms with an unprecedented level of detail and realistic color. The new printer could be used to make high-resolution color recreations of objects or ...

Semiconductor scientists discover effect that was thought impossible

A physical effect known as superinjection underlies modern light-emitting diodes (LEDs) and lasers. For decades this effect was believed to occur only in semiconductor heterostructures—that is, structures composed of two ...

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