Erasable printing technology for plasmon colors

Abstract

The invention discloses an erasable printing technology for plasmon colors. The erasable printing technology comprises the following steps that a reflective metal layer with a certain thickness is deposited on a slide; a dielectric medium with a certain thickness is deposited on the metal surface; the metal with a certain thickness is deposited on the surface of the dielectric medium; the laser with certain power and burning time is adopted to scan the metal surface to generate bright colors; a layer of metal foil coated with graphite is laid on the surface of a scanned sample, and then the sample is covered with a light-transmitting solid layer; and the pulse laser with certain pulse width and certain power is adopted to impact the structure to erase the colors. According to the method, the operation requirement is simple, the metal nanostructure of the metal-dielectric medium-reflective metal three-layered structure is induced by the laser to generate remolding deformation, and vivid color decoration insensitive to angles is achieved. By controlling the laser power and exposure time, the method can deterministically and reversibly change the geometric dimensions and crystallinity of the nanostructures so as to realize controllable color changing ability.

Description

technical field

[0001] The invention relates to the technical field of field effect transistors, in particular to an erasable printing technology of plasmon color. Background technique

[0002] In daily life, color is one of the important information for identifying, classifying and perceiving objects. Plasmonic structure colors are generated by the resonant interaction of nanostructured metal surfaces and light, which can control colors in the subwavelength range with resolutions up to 10 nm beyond the diffraction limit. Compared with traditional dyes, plasmonic structural colors show excellent characteristics such as bright colors, high saturation, color controllable, clean and environmentally friendly, and never fade. For example, researchers have demonstrated that, based on localized laser heating, 2 The use of plasmonic resonance on an area of ​​​​can achieve extremely high-resolution full-color printing. This ultra-small-area, high-resolution color printing technolo...

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