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Ordered porous diamond films fabricated by colloidal crystal templating
D A Kurdyukov1, N A Feoktistov, A V Nashchekin
1Ioffe Physical-Technical Institute of the Russian Academy of Sciences, St Petersburg, Russia. kurd@gvg.ioffe.ru
Nanotechnology
|December 14, 2011
Summary
Researchers created ordered porous diamond films using a colloidal crystal templating method. This technique utilizes detonation nanodiamond (DND) and microwave plasma-enhanced chemical vapor deposition (MWPECVD) for novel material fabrication.
Area of Science:
- Materials Science
- Nanotechnology
- Crystallography
Background:
- Colloidal crystals, specifically opal films, serve as templates for creating ordered structures.
- Detonation nanodiamond (DND) particles are suitable precursors for diamond film synthesis.
Purpose of the Study:
- To develop a novel method for fabricating diamond films with 2D and 3D ordered porous structures.
- To explore the use of colloidal crystal templating for advanced diamond materials.
Main Methods:
- Impregnation of silica colloidal crystal (opal) films with detonation nanodiamond (DND) hydrosol.
- Microwave plasma-enhanced chemical vapor deposition (MWPECVD) for diamond regrowth within the template pores.
- Ar(+) ion dry etching and wet etching (HF) to remove the silica template.
Main Results:
- Successfully fabricated diamond films with 2D and 3D ordered porous structures.
- The morphology of the diamond films accurately replicated the pore network of the opal template.
- Raman spectroscopy confirmed the diamond structure of the synthesized materials.
Conclusions:
- The colloidal crystal templating method is effective for producing ordered porous diamond films.
- The fabricated films can be either substrate-connected or free-standing.
- This technique offers a pathway for creating novel nanostructured diamond materials.
