1：Experimental Design and Method Selection:

The study involved preparing photo-responsive nanocapsules (NCs) containing thyme essential oil via interfacial polycondensation in miniemulsion, coating commercial polyethylene (PE) and polylactic acid (PLA) films with these NCs after surface treatments (plasma or corona) to enhance wettability and adhesion, and evaluating the light-triggered release of the oil.

2：Sample Selection and Data Sources:

PE (DJM1826 grade) and PLA (4042D grade) films were used; thyme essential oil was purchased from Farmalabor. Bacterial strains Escherichia coli (DSM 498) and Micrococcus luteus (DSM 348) were used for antimicrobial activity tests.

3：List of Experimental Equipment and Materials:

Equipment included a Collin E 20T single screw extruder with calendaring unit, plasma reactor (Tucano medium plasma reactor 600), corona machine (Tantec), contact angle system (OCA/Dataphysics/SCA20), SEM (FEI Quanta 200 FEG), UV-Vis spectrophotometer (V570 Jasco), FTIR spectrophotometer (Spectrum 100 Perkin-Elmer), GC-MS (Focus GC-Polaris Q Thermo Fisher Scientific), and microplate reader (Tecan Genios Pro). Materials included PE, PLA, thyme oil, Mowiol 18-88 surfactant, hexane, and nutrients for bacterial cultures.

4：Experimental Procedures and Operational Workflow:

Films were extruded, surface-treated (plasma for PE, corona for PLA), coated with purified NCT solution using a bar coater, dried, and characterized using SEM, adhesion tests, UV-Vis, FTIR, and GC-MS before and after UV irradiation (365 nm). Antimicrobial activity was assessed via MIC determination.

5：Data Analysis Methods:

Data were analyzed using spectrophotometry for microbial growth, optical microscopy for contact angles and adhesion, spectroscopy for structural changes, and GC-MS for oil release kinetics, with statistical analysis in duplicates or triplicates.