Terahertz characterization of two-dimensional low-conductive layers enabled by metal gratings
Abstract While terahertz spectroscopy can provide valuable information regarding the charge transport properties in semiconductors, its application for the characterization of low-conductive two-dimensional layers, i.e., σs < < 1 mS, remains elusive. This is primarily due to the low sensitivi...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2021-02-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-021-82560-2 |
| _version_ | 1828978270784192512 |
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| author | Prashanth Gopalan Yunshan Wang Berardi Sensale-Rodriguez |
| author_facet | Prashanth Gopalan Yunshan Wang Berardi Sensale-Rodriguez |
| author_sort | Prashanth Gopalan |
| collection | DOAJ |
| description | Abstract While terahertz spectroscopy can provide valuable information regarding the charge transport properties in semiconductors, its application for the characterization of low-conductive two-dimensional layers, i.e., σs < < 1 mS, remains elusive. This is primarily due to the low sensitivity of direct transmission measurements to such small sheet conductivity levels. In this work, we discuss harnessing the extraordinary optical transmission through gratings consisting of metallic stripes to characterize such low-conductive two-dimensional layers. We analyze the geometric tradeoffs in these structures and provide physical insights, ultimately leading to general design guidelines for experiments enabling non-contact, non-destructive, highly sensitive characterization of such layers. |
| first_indexed | 2024-12-14T15:15:05Z |
| format | Article |
| id | doaj.art-a4589a3ccd4441cdb73ecf0f82003403 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-14T15:15:05Z |
| publishDate | 2021-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-a4589a3ccd4441cdb73ecf0f820034032022-12-21T22:56:24ZengNature PortfolioScientific Reports2045-23222021-02-0111111010.1038/s41598-021-82560-2Terahertz characterization of two-dimensional low-conductive layers enabled by metal gratingsPrashanth Gopalan0Yunshan Wang1Berardi Sensale-Rodriguez2Department of Electrical and Computer Engineering, The University of UtahDepartment of Chemical Engineering, The University of UtahDepartment of Electrical and Computer Engineering, The University of UtahAbstract While terahertz spectroscopy can provide valuable information regarding the charge transport properties in semiconductors, its application for the characterization of low-conductive two-dimensional layers, i.e., σs < < 1 mS, remains elusive. This is primarily due to the low sensitivity of direct transmission measurements to such small sheet conductivity levels. In this work, we discuss harnessing the extraordinary optical transmission through gratings consisting of metallic stripes to characterize such low-conductive two-dimensional layers. We analyze the geometric tradeoffs in these structures and provide physical insights, ultimately leading to general design guidelines for experiments enabling non-contact, non-destructive, highly sensitive characterization of such layers.https://doi.org/10.1038/s41598-021-82560-2 |
| spellingShingle | Prashanth Gopalan Yunshan Wang Berardi Sensale-Rodriguez Terahertz characterization of two-dimensional low-conductive layers enabled by metal gratings Scientific Reports |
| title | Terahertz characterization of two-dimensional low-conductive layers enabled by metal gratings |
| title_full | Terahertz characterization of two-dimensional low-conductive layers enabled by metal gratings |
| title_fullStr | Terahertz characterization of two-dimensional low-conductive layers enabled by metal gratings |
| title_full_unstemmed | Terahertz characterization of two-dimensional low-conductive layers enabled by metal gratings |
| title_short | Terahertz characterization of two-dimensional low-conductive layers enabled by metal gratings |
| title_sort | terahertz characterization of two dimensional low conductive layers enabled by metal gratings |
| url | https://doi.org/10.1038/s41598-021-82560-2 |
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