SERS Unit Inert Packaging for Oxidation Prevention

The patent applies the inert atmosphere principle by sealing the minute metal structure in a package containing an inert gas (such as nitrogen or argon) or vacuum environment. This prevents oxidation and contamination of the metal surface while maintaining the device in a ready-to-use state. The package includes a sealable container with the optical function part, which can be opened immediately before use without compromising the protective environment until that moment.

The patent implements preliminary action by pre-preparing the minute metal structure in a protected state within the package before use. The structure is manufactured, positioned, and sealed in the inert environment in advance, so that when the device is ready for operation, the protective measures are already in place. This eliminates the need for last-minute protection while ensuring the surface remains uncontaminated.

The patent applies segmentation by dividing the package into separate functional regions: a sealed inert space containing the optical function part and a separate sample arrangement area. The sample can be placed in the inert space through a controlled opening or transfer mechanism that maintains the protective environment for the minute metal structure while allowing sample introduction. This segmentation enables both ease of operation and inert space maintenance.

The patent uses an intermediary mechanism such as a transfer chamber, sealed port, or robotic manipulation system that allows sample arrangement without direct exposure of the minute metal structure to the external environment. The intermediary maintains the inert atmosphere barrier while facilitating the necessary sample introduction, thus resolving the contradiction between operability and environmental stability.