Phase separation occurs when different components of a material, such as in polymer blends, separate into distinct phases due to incompatibility, influencing the material’s performance.

Photocatalysis is a process where a material accelerates a chemical reaction using light, often applied in self-cleaning surfaces, air purification, and water treatment.

Photovoltaics is the technology that converts sunlight directly into electricity using semiconducting materials like silicon, commonly used in solar panels.

Plastic scintillating fibers are polymer-based materials that emit light when exposed to ionizing radiation, often used in medical imaging and high-energy physics detectors.

Definition: A plasticizer is an additive incorporated into polymers to increase their flexibility, workability, and softness by reducing intermolecular forces within the polymer matrix.