1：Experimental Design and Method Selection:

The study employed a hydraulic injection method using an AAO template to fabricate un-doped and Ni-doped CuSe nanowires. The method involved melting bulk materials and injecting them into AAO nanochannels under vacuum.

2：Sample Selection and Data Sources:

Samples included un-doped CuSe and Ni-doped CuSe (

3：5 at% and 0 at%) bulks and nanowires, prepared from Cu, Se, and Ni powders (99% purity). AAO templates with 100 nm channel diameter were used. List of Experimental Equipment and Materials:

Equipment included a vacuum chamber, furnace, SEM (JEOL 6500), TEM (FEI TecnaiTM G2 F20), XRD (Burker D8), CL detector, Raman spectrometer (Horiba HR 800), XPS, and SQUID magnetometer (Quantum Design MPMS-5). Materials included Cu, Se, Ni powders, AAO template, phosphoric acid, and ethanol.

4：5). Materials included Cu, Se, Ni powders, AAO template, phosphoric acid, and ethanol. Experimental Procedures and Operational Workflow:

4. Experimental Procedures and Operational Workflow: Bulks were prepared by sealing mixed powders in quartz tubes under vacuum, annealing at 500°C for 48-120 hr, then melting at 600°C and injecting into AAO templates under hydraulic force. After cooling, AAO was removed with 5 vol% H3PO4, and nanowires were collected and characterized.

5：Data Analysis Methods:

XRD and Raman spectroscopy for crystallinity, CL for optical properties, XPS for chemical states, TEM/EDS for microstructure and composition, and SQUID for magnetic properties.