Is it possible to arrange permanent magnets so that they repel Iron? Can there be a "push" vector ever?
What if we allow for moving arrangements of permanent magnets and consider eddy currents?
For example, what about spinning a magnet on an axle so that n-s are alternately pointing "at" the iron? (or...)
Have you heard all the fuzz about #LK99 some time ago?
If you didn't: some researchers claimed that they discovered a room temperature superconductor.
But what are superconductors anyway?
The most recent discovery, the Cu-doped lead apatite LK-99, is a proposed room-temperature superconductor operating under ambient pressure. However, this discovery has brought a slew of conflicting results from different scientific groups. While some observed the absence of electrical resistance, others could not confirm any signs of superconductivity in LK-99. Here, we investigate the structural and electronic properties of LK-99 and its antecedent compounds through quantum mechanics (QM) and QM-based molecular dynamics (QM-MD) simulations. Our study elucidates the insulating nature of base compounds, Pb$_{10}$(PO$_4$)$_6$O and Pb$_{10}$(PO$_4$)$_6$(OH)$_2$, spotlighting their large band gaps. Notably, Cu doping in LK-99 disrupts its symmetry, yielding a distorted ground-state crystal structure with a triclinic P1 symmetry and CuO$_4$ square coordination. Such alterations predispose LK-99 to exhibit semiconducting behaviors, characterized by a flat band above the Fermi energy, arising from Cu-3d and O-2p orbitals. In addition, the S doping sustains the triclinic P1 symmetry but leads to a significantly reduced band gap, with a band emerging primarily from Cu-3d and S-3p orbitals. These findings are important in understanding LK-99's structural and electronic properties and provide a strategic compass for the development of high-T$_C$ superconductors.
LK-99 potrebbe essere davvero superconduttivo a temperatura ambiente. La telenovela continua e si arricchisce di una nuova puntata.
Ben mood hein cette illustration
L'incroyable Potentiel des Supraconducteurs
https://youtube.com/watch?v=tuEYQvEYR-M #YouTube #LK99 #Supraconducteur #IsThatASupra
Como todos los años, os presento las transparencias y una transcripción extendida de mi charla en Naukas Bilbao 2023 (vídeo). Titulada «Lo que sabemos que no sabemos de LK-99», mi […]
Due articoli apparsi sulla piattaforma di preprint arxiv.org hanno prospettato la scoperta di un #superconduttore “da sogno”, cioè in grado di lavorare e temperatura e pressione ambiente, chiamato #LK99.
Purtroppo durante un tavola rotonda dedicata al tema e tenutasi a settembre nell'ambito della Conferenza Europea sulla Superconduttività Applicata, ha mostrato che LK99 non è altro che una bufala.
Ne parla Riccardo Lucentini -> https://www.scienzainrete.it/articolo/sogno-della-superconduttività-e-caso-di-lk99/riccardo-lucentini/2023-09-13
«Dove posizioneresti questi autori in una scala da “truffatori senza vergogna” a “scienziati troppo entusiasti”?» Questa è la domanda che David Larbalestier, professore di ingegneria meccanica alla Florida State University, si è visto recapitare da un collega insieme all’articolo che annunciava la scoperta di un materiale superconduttore a temperatura ambiente.
🍀 Egghat НетBойне 🍀
Stephen Brooks 🦆
Quantum Observer
Mікє Вυгг
RealSci Nano moved (see bio)
Howard Chu @ Symas
Futuro Prossimo 
Lu 🇦🇲
Francisco R. Villatoro
Scienza in rete 