Yongjun Kim

Optoelectronic neuromorphic visual sensors have garnered considerable interest owing to their ability to both detect light and perform synaptic computations within a single device. This in‐sensor integration reduces the energy‐intensive data transfer between separate sensing and processing hardware, presenting an energy‐efficient pathway toward bio‐inspired machine vision. However, limited optical absorption in ultrathin photoactive layers can hinder their practical deployment in artificial vision systems. This review examines how resonant photonic structures address this challenge by serving as an additional geometric design dimension that complements active‐material engineering. Recent advancements are organized into three architecture families: plasmonic structures (nanoparticles and periodic patterns), multilayer interference architectures (Fabry–Pérot resonators, distributed Bragg reflectors, and Tamm‐plasmon structures), and nanowire arrays. Depending on the device configuration, photonic geometry and material optical properties jointly control optical field enhancement within the active layer, wavelength selectivity, and polarization sensitivity, whereas multilevel storage relies on material‐ and interface‐level switching mechanisms. This structural engineering supports filter‐free, energy‐efficient, and multispectral in‐sensor computing for next‐generation artificial vision applications.

Infections linked to Staphylococcus spp. are difficult to treat with current antibiotic therapy, resulting in increased antibiotic resistance populations. One of the leading strategies to overcome this issue is the novel combination of antibacterial nanoparticles (NPs) and sustainable natural compounds. This study reported the identification of a new synergistic combination of copper oxide (CuO) NPs, a well-known antibacterial agent against Staphylococcus spp., and anthraquinone-2-carboxylic acid (AQ), a plant-derived antimicrobial compound, with a potent and specific fashion in killing Staphylococcus spp. CuO NPs were synthesized using the one-pot coprecipitation method and characterized by using X-ray diffraction and transmission electron microscopy. Further checkerboard analysis showed that CuO NPs and AQ increased the antibacterial activity of individual agents against Staphylococcus aureus among Staphylococcus spp. by four- to eightfold compared to individual materials. Additional mechanistic studies on the synergy revealed that the inhibition of biofilm formation and loss of cytoplasmic volume with cell shrinkage are the major actions of the combination in expressing the phenotype. This study clearly showed that the combination of CuO NPs and AQ would be a novel strategy to eradicate S. aureus infections.