End the duopoly

Manipulating metals for adaptive camouflage

IR modulation potentials. (A) Schematics of a nanoscopic Pt film–based RSE device (left) before and (right) after electrodeposition. (B) Sheet resistance of the evaporated Pt films for different Pt thicknesses. The inset shows photographs of (left) the 1-nm Pt film and (right) the 2-nm Pt films after electrodeposition in an RSE three-electrode system, and the light-reflecting plate is the Pt counter electrode in the three-electrode system. (C) Volmer-Weber growth of noble metals on heterogeneous surfaces. The inset shows the highly magnified surface morphologies of the evaporated Pt films on BaF2 substrate with Pt thickness of 4 nm. (D) Spectral refractive index of BaF2 substrate and Pt film. (E) The ratio of average IR transmittance (T%), average IR reflectance (R%), average Pt-induced IR absorbance (PA%), and average substrate-induced IR absorbance (SA%) of the Pt evaporated BaF2 substrates in the range of 3 to 14 μm. (F) Total IR reflectance spectra of the 3 nm Pt/BaF2substrate before and after Ag electrodeposition (15 s) in an RSE three-electrode system. The total IR reflectance spectrum of the BaF2substrate covered standard gold (Au) film represents an ideal case, in which the Pt-induced IR absorption part and the IR transmission part of the 3-nm Pt/BaF2 […]

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