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Fabrication and Optimization of Type II Silicon Clathrate Films

Fabrication and Optimization of Type II Silicon Clathrate Films

Published on: October 14, 2025

Tunable plasticity in amorphous silicon carbide films.

Yusuke Matsuda¹, Namjun Kim, Sean W King

¹Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, USA.

ACS Applied Materials & Interfaces

|July 24, 2013

Summary

Hydrogenated amorphous silicon carbide films exhibit tunable plasticity and enhanced fracture resistance. Controlling molecular structure improves mechanical properties, overcoming brittleness challenges in hybrid glasses.

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Area of Science:

Materials Science
Mechanical Engineering
Solid State Physics

Background:

Plasticity is essential for fracture resistance in engineering materials.
Brittle hybrid organic-inorganic glasses (hybrid glasses) lack plasticity, limiting their applications.
Low fracture resistance is a significant challenge for hybrid glasses.

Purpose of the Study:

To demonstrate tunable plasticity in hydrogenated amorphous silicon carbide films.
To enhance fracture resistance by controlling the molecular structure of hybrid glasses.
To investigate the relationship between plasticity and fracture resistance.

Main Methods:

Fabrication of hydrogenated amorphous silicon carbide films.
Tuning molecular structure to control plasticity.
Estimation of work-of-fracture using a mean-field approach.
Analysis of plasticity onset and rigidity percolation threshold.

Main Results:

Hydrogenated amorphous silicon carbide films exhibit tunable plasticity.
Plasticity was controlled by adjusting the molecular structure.
Fracture resistance was increased and adjustable.
A potential link between plasticity onset and rigidity percolation was identified.

Conclusions:

Hybrid glasses can be engineered to possess tunable plasticity.
Controlling molecular structure offers a pathway to enhance fracture resistance.
Understanding plasticity mechanisms is key to developing advanced hybrid materials.