Defective Nanotubes Turned into Light Emitters

A diagram of the device proposed by the UPV/EHU’s NanoBio Spectroscopy Group. The result has led to the patent for a new source of light emission; its main feature is that it emits across the whole of the visible and ultraviolet spectrum at ambient temperature, and can be produced using standard manufacturing methods.

A diagram of the device proposed by the UPV/EHU’s NanoBio Spectroscopy Group. The result has led to the patent for a new source of light emission; its main feature is that it emits across the whole of the visible and ultraviolet spectrum at ambient temperature, and can be produced using standard manufacturing methods.

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The World’s Most Powerful Terahertz Quantum Cascade Laser

QCL Bild_1

Christoph Deutsch, Martin Brandstetter and Michael Krall in the cleanroom at TU Vienna.

Whether used in diagnostic imaging, analysis of unknown substances or ultrafast communication – terahertz radiation sources are becoming more and more important. A recent Vienna University of Technology breakthrough has been made in this important area [Citations below]. Terahertz waves are invisible, but incredibly useful; they can penetrate many materials which are opaque to visible light and they are perfect for detecting a variety of molecules. Read More →

Are Invisible Extraterrestrials Out There?

Image Credit: 20th Century Fox Films

I recently watched The Darkest Hour, a film about invisible aliens that invade and terrorize Earth. While the movie itself leaves much to be desired, the concept of invisible aliens is one that I find noteworthy. As we search for alien lifeforms, could we be missing them due to their invisibility?

While invisibility has been a frequent theme in science fiction, often presented with a feeling of artificiality, nature has actually perfected it a number of times. The Darkest Hour reminded me that  “invisible” animals, those that are comprised to a large degree of Read More →