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Large-Area Nanolattice Film with Enhanced Modulus, Hardness, and Energy Dissipation
Abhijeet Bagal1, Xu A Zhang1, Rahnuma Shahrin2
1Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, North Carolina, 27695, United States.
Scientific Reports
|August 24, 2017
Summary
Engineered nanolattice films offer superior mechanical properties and energy dissipation. This advanced material, with high porosity, shows remarkable recoverability for diverse thin-film applications.
Area of Science:
- Materials Science
- Mechanical Engineering
- Nanotechnology
Background:
- Traditional thin films often lack the mechanical robustness and energy dissipation capabilities required for advanced applications.
- Developing materials with high specific strength and recoverability is crucial for next-generation devices.
Purpose of the Study:
- To engineer a novel nanolattice material with enhanced mechanical properties for thin-film applications.
- To investigate the modulus-density scaling, energy dissipation, and recoverability of the nanolattice structure.
Main Methods:
- Fabrication of nanolattice films using three-dimensional colloidal nanolithography and atomic layer deposition.
- Characterization of mechanical properties, including modulus, specific energy dissipation, and recoverability under compressive loading.
- Analysis of material architecture and porosity.
Main Results:
- Achieved a modulus-density scaling of n ~ 1.1 with 95.6% porosity.
- Demonstrated a modulus of 1.19 GPa and specific energy dissipation of 325.5 kJ/kg.
- Exhibited excellent material recoverability for strains up to 20%.
Conclusions:
- The engineered nanolattice film exhibits exceptional mechanical properties surpassing previous benchmarks at similar densities.
- The material's continuum-like behavior and visual unobtrusiveness make it suitable for seamless integration.
- Potential applications include robust, multifunctional insulating films for photonic elements, optoelectronics, and microcircuits.
