The device, nanofabricated with the help of electron beam lithography, functions at extremely low temperatures of less than one degree above absolute zero. The possibility to control the electrons going through the device one by one in the metal-superconductor structure enables its use as a heat transistor.
The electron coolers could be used in the future, for instance, in space research for the precise cooling of tiny radiation detectors, and the small size and simplicity of the device may prove valuable in other areas of research as well. Other areas of application may include, for instance, sensors used in imaging.
The heat transistor has been developed and fabricated as a collaborative project between the TKK Low Temperature Lab and the Italian Scuola Normale Superiore.
Olli-Pentti Saira, Matthias Meschke, Francesco Giazotto, Alexander M. Savin, Mikko Möttönen, and Jukka P. Pekola, Heat Transistor: Demonstration of Gate-Controlled Electron Refrigeration, Physical Review Letters 99, 027203 (2007).
Riikka Hopiavaara | alfa
Unraveling materials' Berry curvature and Chern numbers from real-time evolution of Bloch states
18.02.2019 | Max-Planck-Institut für Struktur und Dynamik der Materie
Gravitational waves will settle cosmic conundrum
15.02.2019 | Simons Foundation
For the first time, an international team of scientists based in Regensburg, Germany, has recorded the orbitals of single molecules in different charge states in a novel type of microscopy. The research findings are published under the title “Mapping orbital changes upon electron transfer with tunneling microscopy on insulators” in the prestigious journal “Nature”.
The building blocks of matter surrounding us are atoms and molecules. The properties of that matter, however, are often not set by these building blocks...
Scientists at the University of Konstanz identify fierce competition between the human immune system and bacterial pathogens
Cell biologists from the University of Konstanz shed light on a recent evolutionary process in the human immune system and publish their findings in the...
Laser physicists have taken snapshots of carbon molecules C₆₀ showing how they transform in intense infrared light
When carbon molecules C₆₀ are exposed to an intense infrared light, they change their ball-like structure to a more elongated version. This has now been...
The so-called Abelian sandpile model has been studied by scientists for more than 30 years to better understand a physical phenomenon called self-organized...
Physicists from the University of Basel have developed a new method to examine the elasticity and binding properties of DNA molecules on a surface at extremely low temperatures. With a combination of cryo-force spectroscopy and computer simulations, they were able to show that DNA molecules behave like a chain of small coil springs. The researchers reported their findings in Nature Communications.
DNA is not only a popular research topic because it contains the blueprint for life – it can also be used to produce tiny components for technical applications.
11.02.2019 | Event News
30.01.2019 | Event News
16.01.2019 | Event News
18.02.2019 | Interdisciplinary Research
18.02.2019 | Process Engineering
18.02.2019 | Studies and Analyses