AI Article Synopsis
- A flexible zerogap metallic structure is created on a substrate that can heal metal cracks; the gap's size can be adjusted by applying compressive strains, ranging from nearly zero to 100 nanometers.
- There is limited research on the connection between the gap width, strain, and periodicity, as well as the underlying tunability mechanism.
- Atomic force microscopy (AFM) measurements reveal that periodic nano-trenches are formed in the substrate due to strain, and the properties of light transmission indicate that the curvature of the flexible substrate directly influences the gap size.
Article Abstract
A flexible zerogap metallic structure is periodically formed, healing metal cracks on a flexible substrate. Zerogap is continuously tunable from nearly zero to one hundred nanometers by applying compressive strains on the flexible substrate. However, there have been few studies on how the gap width is related to the strain and periodicity, nor the mechanism of tunability itself. Here, based on atomic force microscopy (AFM) measurements, we found that 200 nm-deep nano-trenches are periodically generated on the polymer substrate below the zerogap owing to the strain singularities extant between the first and the second metallic deposition layers. Terahertz and visible transmission properties are consistent with this picture whereby the outer-bending polyethylene terephthalate (PET) substrate controls the gap size linearly with the inverse of the radius of the curvature.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10537752 | PMC |
| http://dx.doi.org/10.3390/nano13182526 | DOI Listing |
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