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Nanowire laser researchers in the laboratory
(l-r) Doctoral candidates Benedikt Mayer and Daniel Rudolph; Dr. Gregor Koblmüller; Profs. Jonathan Finley and Gerhard Abstreiter. (Photo: A. Heddergott/TUM)
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Nanowire lasers could work with silicon chips, optical fibers, even living cells

Laser light at useful wavelengths from semiconductor nanowires

Thread-like semiconductor structures called nanowires, so thin that they are effectively one-dimensional, show potential as lasers for applications in computing, communications, and sensing. Scientists at the Technische Universität München (TUM) have demonstrated laser action in semiconductor nanowires that emit light at technologically useful wavelengths and operate at room temperature. They now have documented this breakthrough in the journal Nature Communications and, in Nano Letters, have disclosed further results showing enhanced optical and electronic performance.

 

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Benedikt Mayer und Lisa Janker an der Epitaxieanlage im Walter Schottky Institut der TU München – Foto: Uli Benz / TUM

Nanolaser for information technology

Physicists at the Technical University of Munich (TUM) have developed a nanolaser, a thousand times thinner than a human hair. Thanks to an ingenious process, the nanowire lasers grow right on a silicon chip, making it...

Prof. Dr. Gerhard Abstreiter - Bild: Astrid Eckert / TUM

Stern-Gerlach Medal for Gerhard Abstreiter

For his pioneering work in the field of semiconductor physics, Gerhard Abstreiter, Professor at the Physics Department and director of the Institute for Advanced Study at the Technische Universität München (TUM), is awarded...

Dr. Alaa Abdellah zeigt flexible Gassensoren. (Foto: U. Benz/TUM)

With carbon nanotubes, a path to flexible, low-cost sensors

Researchers at the Technische Universität München (TUM) are showing the way toward low-cost, industrial-scale manufacturing of a new family of electronic devices. A leading example is a gas sensor that could be integrated...

Eine Polymerkette wird mit der Spitze eines AFM über die Oberfläche gezogen

Friction in the nano-world

Whether in vehicle transmissions, hip replacements, or tiny sensors for triggering airbags: The respective components must slide against each other with minimum friction to prevent loss of energy and material wear....

Das Bild zeigt ein Nanoroehrchen (schwarz), das wie eine Gitarrensaite eingespannt und zu Schwingungen angeregt werden kann. Ein benachbartes elektrisches Feld sorgt dafür, das nur zwei der vielen möglichen Zustände angesteuert werden. Bild: M.J. Hartmann, TUM

Quantum computers counting on carbon nanotubes

Carbon nanotubes can be used as quantum bits for quantum computers. A study by physicists at the Technische Universität München (TUM) has shown how nanotubes can store information in the form of vibrations. Up to now,...

Researchers build synthetic membrane channels out of DNA

As reported in the journal Science, physicists at the Technische Universität München (TUM) and the University of Michigan have shown that synthetic membrane channels can be constructed through "DNA nanotechnology." This...