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A material-keyboard made of graphene

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A material-keyboard made of graphene
Researchers at ETH Zurich have succeeded in turning specially prepared graphene flakes either into insulators or into superconductors by applying an electric voltage. This technique even works locally, meaning that in the same graphene flake regions with completely different physical properties can be realized side by side.
The material keyboard realized by the ETH Zurich researchers. By applying electric voltages (“keys”) at different points, the magic-angle graphene can become locally superconducting (electron pairs) or isolating (barrier on the right). (Picture: ETH Zurich / F. de Vries)
The production of modern electronic components requires materials with very diverse properties. There are isolators, for instance, which do not conduct electric current, and superconductors which transport it without any losses. To obtain a particular functionality of a component one usually has to join several such materials to ....

United States , Peter Rickhaus , Klaus Ensslin , Bilayer Graphene , Thomas Ihn , Laboratory For Solid State Physics , National Centre Of Competence , Massachusetts Institute Of Technology , Solid State Physics , National Centre , Quantum Science , Angle Twisted Bilayer , Massachusetts Institute , Fokko De Vries , Gate Defined Josephson Junctions , Magic Angle Twisted Bilayer , ஒன்றுபட்டது மாநிலங்களில் , தாமஸ் ஈஹ்னி , ஆய்வகம் க்கு திட நிலை இயற்பியல் , தேசிய மையம் ஆஃப் திறன் , மாசசூசெட்ஸ் நிறுவனம் ஆஃப் தொழில்நுட்பம் , திட நிலை இயற்பியல் , தேசிய மையம் , குவாண்டம் அறிவியல் , மாசசூசெட்ஸ் நிறுவனம் ,

New microscopy concept enters into force

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New microscopy concept enters into force
The first demonstration of an approach that inverts the standard paradigm of scanning probe microscopy raises the prospect of force sensing at the fundamental limit.
Configuration of the inverted scanning force microscope.
(Graphics: Alexander Eichler, ETH Zurich)
The development of scanning probe microscopes in the early 1980s brought a breakthrough in imaging, throwing open a window into the world at the nanoscale. The key idea is to scan an extremely sharp tip over a substrate and to record at each location the strength of the interaction between tip and surface. In scanning force microscopy, this interaction is – as the name implies – the force between tip and structures on the surface. This force is typically determined by measuring how the dynamics of a vibrating tip changes as it scans over objects deposited on a substrate. A common analogy is tapping a finger across a table and sensing objects place ....

Christian Degen , Ramasubramanian Chitra , Oded Zilberberg , Shobhna Misra , Albert Schliesser , Alexander Eichler , Laboratory For Solid State Physics , University Of Copenhagen , Institute For Theoretical Physics , Senior Scientist , Solid State Physics , Physical Review Applied , Theoretical Physics , Krassm D , Thamma K , கிறிஸ்துவர் டேகேன் , ஷ்ோப்னா மிஸ்ரா , அலெக்சாண்டர் எய்ச்சிலேர் , ஆய்வகம் க்கு திட நிலை இயற்பியல் , பல்கலைக்கழகம் ஆஃப் கோபெந்ஹேகந் , நிறுவனம் க்கு கோட்பாட்டு இயற்பியல் , மூத்தவர் விஞ்ஞானி , திட நிலை இயற்பியல் , உடல் விமர்சனம் பயன்படுத்தப்பட்டது , கோட்பாட்டு இயற்பியல் ,