Which term refers to the process of capturing one substance inside another?

The correct term that describes the process of capturing one substance inside another is encapsulation. This technique is commonly used in various fields, including pharmaceuticals, food technology, and nanotechnology, to enclose active ingredients within a carrier material. Encapsulation allows for controlled release, protection of sensitive substances from environmental factors, and targeted delivery.

For instance, in drug delivery systems, drugs can be encapsulated in nanoparticles to improve their solubility, stability, and bioavailability. Encapsulation can involve mechanisms like coating with polymers or using liposomes, where the active material is physically confined within a barrier, enabling it to retain its properties while providing various advantages based on its application.

Understanding this concept is crucial for applications in nanotechnology, where manipulating materials at the nanoscale can lead to significant enhancements in performance and functionality.