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Strain versus Tunable Terahertz Nanogap Width: A Simple Formula and a Trench below
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...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10537752/ https://www.ncbi.nlm.nih.gov/pubmed/37764555 http://dx.doi.org/10.3390/nano13182526 |
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author | Kim, Hwanhee Haddadi Moghaddam, Mahsa Wang, Zhihao Kim, Sunghwan Lee, Dukhyung Yang, Hyosim Jee, Myongsoo Park, Daehwan Kim, Dai-Sik |
author_facet | Kim, Hwanhee Haddadi Moghaddam, Mahsa Wang, Zhihao Kim, Sunghwan Lee, Dukhyung Yang, Hyosim Jee, Myongsoo Park, Daehwan Kim, Dai-Sik |
author_sort | Kim, Hwanhee |
collection | PubMed |
description | 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. |
format | Online Article Text |
id | pubmed-10537752 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-105377522023-09-29 Strain versus Tunable Terahertz Nanogap Width: A Simple Formula and a Trench below Kim, Hwanhee Haddadi Moghaddam, Mahsa Wang, Zhihao Kim, Sunghwan Lee, Dukhyung Yang, Hyosim Jee, Myongsoo Park, Daehwan Kim, Dai-Sik Nanomaterials (Basel) Article 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. MDPI 2023-09-09 /pmc/articles/PMC10537752/ /pubmed/37764555 http://dx.doi.org/10.3390/nano13182526 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Kim, Hwanhee Haddadi Moghaddam, Mahsa Wang, Zhihao Kim, Sunghwan Lee, Dukhyung Yang, Hyosim Jee, Myongsoo Park, Daehwan Kim, Dai-Sik Strain versus Tunable Terahertz Nanogap Width: A Simple Formula and a Trench below |
title | Strain versus Tunable Terahertz Nanogap Width: A Simple Formula and a Trench below |
title_full | Strain versus Tunable Terahertz Nanogap Width: A Simple Formula and a Trench below |
title_fullStr | Strain versus Tunable Terahertz Nanogap Width: A Simple Formula and a Trench below |
title_full_unstemmed | Strain versus Tunable Terahertz Nanogap Width: A Simple Formula and a Trench below |
title_short | Strain versus Tunable Terahertz Nanogap Width: A Simple Formula and a Trench below |
title_sort | strain versus tunable terahertz nanogap width: a simple formula and a trench below |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10537752/ https://www.ncbi.nlm.nih.gov/pubmed/37764555 http://dx.doi.org/10.3390/nano13182526 |
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