Cargando…

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...

Descripción completa

Detalles Bibliográficos
Autores principales: Kim, Hwanhee, Haddadi Moghaddam, Mahsa, Wang, Zhihao, Kim, Sunghwan, Lee, Dukhyung, Yang, Hyosim, Jee, Myongsoo, Park, Daehwan, Kim, Dai-Sik
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
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
_version_ 1785113169889329152
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
work_keys_str_mv AT kimhwanhee strainversustunableterahertznanogapwidthasimpleformulaandatrenchbelow
AT haddadimoghaddammahsa strainversustunableterahertznanogapwidthasimpleformulaandatrenchbelow
AT wangzhihao strainversustunableterahertznanogapwidthasimpleformulaandatrenchbelow
AT kimsunghwan strainversustunableterahertznanogapwidthasimpleformulaandatrenchbelow
AT leedukhyung strainversustunableterahertznanogapwidthasimpleformulaandatrenchbelow
AT yanghyosim strainversustunableterahertznanogapwidthasimpleformulaandatrenchbelow
AT jeemyongsoo strainversustunableterahertznanogapwidthasimpleformulaandatrenchbelow
AT parkdaehwan strainversustunableterahertznanogapwidthasimpleformulaandatrenchbelow
AT kimdaisik strainversustunableterahertznanogapwidthasimpleformulaandatrenchbelow