A method of producing preconfigured arrangements of mobile shape-designed particles. The method includes providing a composite structure comprising a substrate and a layer of particle material over a surface of the substrate; lithographically producing a plurality of shaped-designed particles from the layer of particle material such that the plurality of shaped-designed particles remain substantially in a layer proximate the substrate; and at least one of subsequent to or in conjunction with the lithographically producing, immersing the plurality of shaped-designed particles the substrate in a fluid material, at a preselected temperature. The fluid material comprises a depletion agent having particles having sizes and a volume fraction to provide depletion attraction between at least a portion of the shaped-designed particles and the substrate such that the shaped-designed particles remain substantially in the layer proximate the substrate.

A pearlescent composition for making plastic containers includes a polyester component and a pearlescent component. The pearlescent component is in an amount ranging from 1 wt % to 10 wt % based on the total weight of the pearlescent composition. The pearlescent component includes at least two materials selected from polymethylpentene, a polyolefin-based material different from polymethylpentene, a silicone rubber, and polymethylmethacrylate.

A pearlescent composition for making plastic containers includes a polyester component and a pearlescent component. The pearlescent component is in an amount ranging from 1 wt % to 10 wt % based on the total weight of the pearlescent composition. The pearlescent component includes at least two materials selected from polymethylpentene, a polyolefin-based material different from polymethylpentene, a silicone rubber, and polymethylmethacrylate.

A pearlescent composition for making plastic containers includes a polyester component and a pearlescent component. The pearlescent component is in an amount ranging from 1 wt % to 10 wt % based on the total weight of the pearlescent composition. The pearlescent component includes at least two materials selected from polymethylpentene, a polyolefin-based material different from polymethylpentene, a silicone rubber, and polymethylmethacrylate.

A pearlescent composition for making plastic containers includes a polyester component and a pearlescent component. The pearlescent component is in an amount ranging from 1 wt % to 10 wt % based on the total weight of the pearlescent composition. The pearlescent component includes at least two materials selected from polymethylpentene, a polyolefin-based material different from polymethylpentene, a silicone rubber, and polymethylmethacrylate.

A method may produce a ceramic part with a mother-of-pearl effect, in particular for watchmaking. Such methods may include: forming a ceramic body; depositing a layer of an oxy-nitride component of the OxNy type on at least a portion of the ceramic body; and oxidizing at least a portion of the oxy-nitride layer, preferably by heating.