Structural Color Painting by Rubbing Particle Powder

Abstract

Structural colors originate from purely physical structures. Scientists have been inspired to mimic the structures found in nature, the realization of these structures still presents a great challenge. We have recently introduced unidirectional rubbing of a dry particle powder on a rubbery surface as a quick, highly reproducible means to fabricate a single crystal monolayer assembly of particles over an unlimited area. This study extends the particle-rubbing process to a novel fine-art painting, structural color painting (SCP). SCP is based on structural coloring with varying iridescence according to the crystal orientation, as controlled by the rubbing direction. This painting technique can be applied on curved surfaces, which enriches the objects to be painted and helps the painter mimic the structures found in nature. It also allows for quick fabrication of complicated particle-assembly patterns, which enables replication of paintings.

A colloidoscope of colloid-based porous materials and their uses

“…For example, the monolayer can be used for shadow deposition to generate different shapes of deposited materials, 97,120,124,186 used as an etch mask to generate high aspect ratio structures with high order, 166,187,188 inverted/textured to create antireflective coatings for reducing the amount of reflected light from a substrate surface, 95 or deformed to generate structurally colored patterns on a substrate. 112 Interesting coupling effects can be observed between the photonic modes of an opal and the plasmonic modes of thin metals deposited on top of the crystal. [189][190][191][192][193] Colloids can also be used for antireflective coating applications.…”

“…112 This type of material has a much more angle-dependent structural color as compared to fully three-dimensional photonic crystals due to the nature of the surface diffraction. Transmittance spectra for the structures shown in A along with the transmittance spectrum for the bare structure (without the additional gold etching step, black line, o-SMGs).…”

Stretchable E‐Skin Apexcardiogram Sensor

“…Because a SiO x layer was formed in the UVO-treated region, the Au particles were deposited only on the untreated PDMS. [20] PDMS solution (20 wt% in heptane) was then spin coated onto the Au-particle-patterned substrate. After curing the PDMS substrate, the particles were indented (Figure 1b), imparting high stretchability to the sensor.…”

Boostream: a dynamic fluid flow process to assemble nanoparticles at liquid interface

“…1). Materials and surfaces templated by MCCs impact numerous domain such as photovoltaics for light trapping [2], optical sensors to detect physical variations through structural color changes [3][4][5] (Fig. 2), mechanics to change surface friction coefficient and wettability [6].…”