The paper "Searching for Better Plasmonic Materials" by Paul R. West et al. reviews alternative materials for plasmonics, aiming to address the significant losses in conventional plasmonic materials such as metals. The authors compare various materials, including metals, metal alloys, heavily doped semiconductors, and graphene, based on their optical properties and fabrication challenges. They evaluate the performance of these materials using quality factors defined for different plasmonic devices, such as localized surface plasmon resonances (LSPRs), surface plasmon polaritons (SPPs), transformation optics (TO) devices, and superlenses. The study highlights that while silver and gold are the most commonly used plasmonic materials due to their low losses in the visible and near-infrared (NIR) ranges, other materials like indium-tin-oxide (ITO), zinc oxide (AZO), and gallium-zinc-oxide (GZO) show promise for specific applications, particularly in the NIR and telecommunication wavelengths. The paper concludes that there is no single best material for all applications, and the choice depends on a balance between material properties, fabrication ease, and cost.The paper "Searching for Better Plasmonic Materials" by Paul R. West et al. reviews alternative materials for plasmonics, aiming to address the significant losses in conventional plasmonic materials such as metals. The authors compare various materials, including metals, metal alloys, heavily doped semiconductors, and graphene, based on their optical properties and fabrication challenges. They evaluate the performance of these materials using quality factors defined for different plasmonic devices, such as localized surface plasmon resonances (LSPRs), surface plasmon polaritons (SPPs), transformation optics (TO) devices, and superlenses. The study highlights that while silver and gold are the most commonly used plasmonic materials due to their low losses in the visible and near-infrared (NIR) ranges, other materials like indium-tin-oxide (ITO), zinc oxide (AZO), and gallium-zinc-oxide (GZO) show promise for specific applications, particularly in the NIR and telecommunication wavelengths. The paper concludes that there is no single best material for all applications, and the choice depends on a balance between material properties, fabrication ease, and cost.