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Hace 2 días · Transition-metal catalyzed cross-electrophile coupling (XEC) has become a prominent method for synthesizing molecules, attracting significant attention in the field 1,2,3,4,5,6.These reactions ...
Hace 1 día · This letter presents a broadband resonator-based in-band decoupling concept for base station (BS) applications, addressing the deteriorated radiation performance resulting from the strong in-band mutual coupling. The baffles, featuring asymmetric periodic split-ring resonators (SRRs) and a metal strip, are developed to block mutual coupling between antenna array elements. To better provide ...
Hace 21 horas · This study presents metal-free protocols for the reduction radical coupling of enamides with diverse alkynes, triggered by 1,1,1,3,3,3-Hexafluoro-2-propanol (HFIP), enabling access to β-keto alkylamides. The established approach demonstrates remarkable efficiency, facile gram-scale synthesis, and outstanding functional group tolerance.
Hace 1 día · Strong coupling at room temperature with a centimeter-scale quartz crystal. Davide Tomasella, Santiago Tarrago Velez, Sissel Bay Nielsen, Joost Van der Heijden, Ulrich Busk Hoff, Ulrik Lund Andersen. Brillouin-based optomechanical systems with high-frequency acoustic modes provide a promising platform for implementing quantum-information ...
Hace 1 día · Figure 1. Néel temperature for the two-orbital half-filled Hubbard model on a cubic lattice with different bandwidths of the two orbitals. Results are obtained using D-TRILEX and DMFT for different values of the Hund’s exchange coupling J.At finite J the Néel transition occurs simultaneously for both orbitals (black “triangle” and “cross” markers).
Hace 4 días · Here, a mechanism to achieve the directional near-field coupling of Janus dipoles beyond polarization locking by leveraging hybrid TM-TE surface waves is presented. These hybrid surface waves, as eigenmodes with both TM and TE wave components, can be supported by optical interfaces between different filling materials inside a parallel-plate waveguide.
Hace 5 días · Being capable to recognize among the vast array of coupling patterns can facilitate the time spent on interpreting a 1H NMR. The diagram below illustrates two coupling patterns: a triplet of doublets (td) and a doublet of triplets (dt). The J coupling constants for both multiplets are measured at 3.2 and 8.3 Hz.
