File:Opal molecular structure Via Scanning EM (idealized).jpg - Wikimedia Commons

Molecules, Free Full-Text

Particle-Nested Inverse Opal Structures as Hierarchically Structured Large-Scale Membranes with Tunable Separation Properties

SEM micrograph of opal showing ring structure. A secondary electron

Molecules, Free Full-Text

Hierarchical Molecularly Imprinted Inverse Opal-Based Platforms for Highly Selective and Sensitive Determination of Histamine

Category:Opal - Wikimedia Commons

A molecularly imprinted photonic polymer based on an inverse opal structure for sensing D-dimer at the point-of-care - ScienceDirect

Fabrication of TiO2 Binary Inverse Opals without Overlayers via the Sandwich-Vacuum Infiltration of Precursor

Category:Opal - Wikimedia Commons

Fabrication of TiO2 Binary Inverse Opals without Overlayers via the Sandwich-Vacuum Infiltration of Precursor