The remarkable capabilities of 2D plasmonic surfaces in controlling optical waves have garnered significant attention. However, the challenge of large-scale manufacturing of uniform, well-aligned, and tunable plasmonic surfaces has hindered their industrialization. To address this, we present a groundbreaking tunable plasmonic platform design achieved through magnetic field (MF) assisted ultrafast laser direct deposition in air. Through precise control of metal nanoparticles (NPs), with cobalt (Co) serving as the model material, employing an MF, and fine-tuning ultrafast laser parameters, we have effectively converted coarse and non-uniform NPs into densely packed, uniform, and ultrafine NPs (~3 nm). This revolutionary advancement results in the creation of customizable plasmonic 'hot spots,' which play a pivotal role in surface-enhanced Raman spectroscopy (SERS) sensors. The profound impact of this designable plasmonic platform lies in its close association with plasmonic resonance and energy enhancement. When the plasmonic nanostructures resonate with incident light, they generate intense local electromagnetic fields, thus vastly increasing the Raman scattering signal. This enhancement leads to an outstanding 2–18 fold boost in SERS performance and unparalleled sensing sensitivity down to 10⁻¹⁰ M. Notably, the plasmonic platform also demonstrates robustness, retaining its sensing capability even after undergoing 50 cycles of rinsing and re-loading of chemicals. Moreover, this work adheres to green manufacturing standards, making it an efficient and environmentally friendly method for customizing plasmonic 'hot spots' in SERS devices. Our study not only achieves the formation of high-density, uniform, and ultrafine NP arrays on a tunable plasmonic platform but also showcases the profound relation between plasmonic resonance and energy enhancement. The outstanding results observed in SERS sensors further emphasize the immense potential of this technology for energy-related applications, including photocatalysis, photovoltaics, and clean water, propelling us closer to a sustainable and cleaner future.

The development of perovskite photoelectric devices with excellent performance is largely dependent on the defects in the perovskite films. To address this issue, a specific drug, leflunomide (LF, C₁₂H₉F₃N₂O₂), was incorporated into the perovskite to reduce defects and improve its photoelectric properties. It is believed that the C=O bond on LF molecule can interact with the uncoordinated Pb²⁺ of the perovskite, thereby reducing non-radiative recombination. This novel approach of incorporating LF into perovskite films has the potential to revolutionize the development of high-performance perovskite photoelectric devices. The trifluoromethyl functional (–CF₃) group on LF can form a protective layer on the surface of the perovskite film, shielding it from water erosion. Moreover, LF can be utilized to alter the nucleation position of perovskite, thus minimizing the number of defects and optimizing the film quality. Consequently, the LF-doped perovskite film displays low trap density and high photoelectric performance. The LF-doped perovskite film showed a trap density of 8.28 × 10¹¹, which is notably lower than the 2.04 × 10¹² of the perovskite film without LF. The responsivity and detectivity of the LF-doped perovskite photodetector were 0.771 A/W and 2.81 × 10¹¹ Jones, respectively, which are much higher than the 0.23 A/W and 1.06 × 10¹⁰ Jones of the LF-undoped perovskite photodetector. Meanwhile, the LF-doped photodetector maintained an initial photocurrent of 86% after 30 days of storage in air, indicating drastically increased environmental stability. This strongly suggests that LF is an effective additive for perovskites utilized in optoelectronic devices with high performance.

Green production of functional nano-oxides on a large scale is crucial for the modern manufacturing industries. Traditional hydrothermal methods and ball milling are usually time-consuming and require long-term energy input with undesired by-products. Herein, an ultrafast laser-induced high-pressure photochemistry manufacturing technique is developed to massively produce planar-aligned graphene-coated two-dimensional (2D) SnO₂ nanoplatelet on carbon nanotube (CNT) paper under the green chemistry guidelines. The unique design of Z-axis confinement added to the ultrafast laser irradiation provides an exceptional high temperature of 1772 K and a high pressure of 24 GPa in the localized laser plasma plume. This transient nonequilibrium condition controls the formation of 2D SnO_2, and the ablated C atoms cool down afterward as in-situ “glue” to intactly seal the oxides on the CNT substrate. The resultant hierarchical Graphene@2D SnO₂@CNT paper anode for Li-ion battery has an outstanding capacity of 819 mAh g⁻¹ (1637 mAh cm⁻³) at 0.5 A g⁻¹ and retains 622 mAh g⁻¹ (1245 mAh cm⁻³) at 5.0 A g⁻¹. The high capacity at 0.5 A g⁻¹ has a retention of 92% after 600 cycles. This work provides an environmental-friendly scalable manufacturing technique to produce functional nanocomposites in 1 step.

Atomic noble metals stand as one of the most advanced catalysts because of their unique properties and interaction with the reactants. However, due to their high activity, noble atomic catalysts tend to aggregate and deactivate in practical application. Moreover, supports aimed to disperse these atomic catalysts often suffer from weak confinement and poor porosity, thus limited the catalytic efficiency of noble atoms. Here, we report the facile encapsulation of atomic noble catalyst in cheap cerous metal-organic framework (Ce-MOF) crystals to create a robust catalyst that could deliver high catalytic performance for the reduction of 4-nitrophenol without decay in long-term cycling test. Specifically, Au atoms encapsulated in Ce-MOF exhibited ultrahigh turnover frequency (TOF) of 131 min^-1 for the reduction of 4-nitrophenol in minutes, consuming only 10% precious metals compared with state-of-the-art catalysts operated under same condition.