1：Experimental Design and Method Selection:

The study involves theoretical analysis and numerical calculations to explore the light-induced temperature differences between nanoparticles of nanodimers and their connection with thermophoretic forces. The methodology includes the use of generalized multiparticle Mie theory (GMM) for light scattering calculations and the Green’s function approach for photothermal conversion estimations.

2：Sample Selection and Data Sources:

The study focuses on nanodimers formed by two spherical nanoparticles of gold, silver, or copper with radii ranging from 20 to 100 nm. The complex electrical permittivity constants for these materials were sourced from experimental measurements in the literature.

3：List of Experimental Equipment and Materials:

The study is theoretical and does not involve physical experiments, hence no specific equipment or materials are listed.

4：Experimental Procedures and Operational Workflow:

The workflow includes setting parameters for the dimer (radii, separation gap, materials), calculating the power absorbed by each nanoparticle, estimating temperature differences, and computing average thermophoretic forces as functions of wavelength and incident angle of light.

5：Data Analysis Methods:

The analysis involves numerical integration of near electric fields to evaluate absorbed power and temperature differences, followed by the calculation of thermophoretic forces using derived equations.