Topological Hall Effect in Thin Films of an Antiferromagnetic Weyl Semimetal Integrated on Si

Synthesis of metallic high-entropy alloy nanoparticles

“…Zhang and co-workers used lithium naphthalene (LiNaph), which was prepared by dissolving lithium and naphthalene in tetrahydrofuran (THF) at room temperature in an Ar-filled glovebox, as a reducing agent to reduce a group of metal acetylacetonates. 63 Adding an appropriate amount of dark-green LiNaph solution to a THF solution containing platinum acetylacetonate [Pt(acac) 2 ], Co(acac) 2 , Cu(acac) 2 , Ni(acac) 2 , and Fe(acac) 3 at 62 1C (right below the boiling point of THF, 66 1C) resulted in the formation of black colloidal nanoparticles containing all five metal elements. Thermally annealing the black product at an appropriate temperature (e.g., 600 1C) improved its crystallinity, transforming it into PtFeCoNiCu HEA nanoparticles.…”

Programmable Entropy-Driven Circuit-Cascaded Self-Feedback DNAzyme Network for Ultra-Sensitive Fluorescence and Photoelectrochemical Dual-Mode Biosensing

“…28 These low-cost amplification strategies are typically capable of achieving 100-fold signal gain in a few hours, 29 but their amplification capabilities are still insufficient given the interference of complex environments to organisms and the low abundance of targets. As a result, a series of DNA cascade networks such as CHA-DNAzyme, 30,31 zyme, 32,33 CHA-HCR, 34,35 RCA-DNAzyme, 36,37 CRISPR/ Cas12a-HCR, 38 and CRISPR/Cas12a-SDA 39 have been developed to further enhance signal amplification and thus increase detection sensitivity. However, the metastable hairpin structure may cause undesirable DNA self-assembly to occur and produce background leakage, while the introduction of DNA polymerases often produces nonspecific amplification.…”