Plasmonic Cu27S24 nanocages for novel solar photothermal nanoink and nanofilm

Plasmonic CuxS Nanocages for Enhanced Solar Photothermal Cell Warming

“…In previous work, we developed novel “nanoink” and “nanofilm” with excellent photothermal performance from colloidal hollow Cu 27 S 24 nanocages corroborated by solar photothermal measurement and numerical simulations. Our study showed that colloidal hollow Cu 27 S 24 nanocages with diameter of ∼180 nm outperformed solid Cu 27 S 24 nanospheres given the same weight percentage …”

“…The Cu x S nanocages were synthesized through developing from solid Cu 2 O nanospheres into hollow Cu x S nanocages via Kirkendall effects according to the previous report …”

“…The Cu x S nanocages were synthesized according to our previous report (see Methods for synthesis details) . Basically, the Cu 2 O nanospheres were transformed into hollow Cu x S nanocages via Kirkendall effects (Figure a).…”

“…The structures were designed using commercial FEM software (COMSOL Multiphysics). Consistent with our previous study, the simulation of a single nanoparticle’s extinction cross section was performed in the module of wave optics . Basically, the Cu x S nanocage was described as a spherical shell with diameter of 150 nm and shell thickness of 20 nm according to the synthesized nanostructures.…”

“…For the calculation of cell solution’s heat transfer under solar light illumination, similar to our previous study, we approximated and then processed the solar spectrum into a series of elemental beams, and each elemental beam was described by a Gaussian fit curve (eq ) as where I i is each processed beam’s intensity, I 0 is the corresponding intensity of the solar spectrum, f 0 is the central frequency of the beam, and σ is the standard deviation, which is proportional to D i (the beam diameter of 1/ e 2 width) defined as σ = D i / f 0 , and we chose σ = 0.02 for simulation.…”