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Related Experiment Video

Updated: May 23, 2026

Patterning Cells on Optically Transparent Indium Tin Oxide Electrodes

Patterning Cells on Optically Transparent Indium Tin Oxide Electrodes

Published on: August 20, 2007

Patterning hierarchy in direct and inverse opal crystals.

Lidiya Mishchenko¹, Benjamin Hatton, Mathias Kolle

¹School of Engineering and Applied Sciences, Harvard University, 29 Oxford St., Room 229, Cambridge, MA 02138, USA.

Small (Weinheim an Der Bergstrasse, Germany)

|March 31, 2012

Summary

This study demonstrates a novel bottom-up method for creating complex, hierarchical inverse colloidal crystal films. Topographical templates precisely control the assembly of materials, enabling tunable optical properties and enhanced functionality.

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Last Updated: May 23, 2026

Patterning Cells on Optically Transparent Indium Tin Oxide Electrodes

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Patterning via Optical Saturable Transitions - Fabrication and Characterization

Patterning via Optical Saturable Transitions - Fabrication and Characterization

Published on: December 11, 2014

Area of Science:

Materials Science
Nanotechnology
Colloid Science

Background:

Biological strategies inspire bottom-up synthesis of inorganic materials.
Fabricating complex synthetic structures using topographic templates is an emerging field.

Purpose of the Study:

To develop a method for synthesizing hierarchical inverse colloidal crystal films using topographic templates.
To investigate the influence of 3D spatial constraints on material assembly and properties.

Main Methods:

Co-assembly of polymeric spheres and silicate sol-gel via evaporative deposition on patterned substrates.
Systematic study of colloid-silica composite response to various geometric constraints.
Removal of colloidal template to form inverse opals.

Main Results:

Topographic substrates control crystallographic domain nucleation and orientation of direct and inverse opals.
The bottom-up topographical approach allows manipulation to form patterned single crystals or crystals with tunable disorder.
Distinct colloidal domains of defined size, location, and orientation are nucleated across various length scales.

Conclusions:

The developed method enables controlled bottom-up synthesis of complex, hierarchical direct and inverse opal structures.
Patterned colloidal crystal films exhibit distinct optical properties based on their order.
This approach offers a means to design materials with altered optical properties and increased functionality.