Cargando…
Ultrastable tip-enhanced hyperspectral optical nanoimaging for defect analysis of large-sized WS(2) layers
Optical nanoimaging techniques, such as tip-enhanced Raman spectroscopy (TERS), are nowadays indispensable for chemical and optical characterization in the entire field of nanotechnology and have been extensively used for various applications, such as visualization of nanoscale defects in two-dimens...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Association for the Advancement of Science
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9286508/ https://www.ncbi.nlm.nih.gov/pubmed/35857514 http://dx.doi.org/10.1126/sciadv.abo4021 |
_version_ | 1784748027485880320 |
---|---|
author | Kato, Ryo Moriyama, Toki Umakoshi, Takayuki Yano, Taka-aki Verma, Prabhat |
author_facet | Kato, Ryo Moriyama, Toki Umakoshi, Takayuki Yano, Taka-aki Verma, Prabhat |
author_sort | Kato, Ryo |
collection | PubMed |
description | Optical nanoimaging techniques, such as tip-enhanced Raman spectroscopy (TERS), are nowadays indispensable for chemical and optical characterization in the entire field of nanotechnology and have been extensively used for various applications, such as visualization of nanoscale defects in two-dimensional (2D) materials. However, it is still challenging to investigate micrometer-sized sample with nanoscale spatial resolution because of severe limitation of measurement time due to drift of the experimental system. Here, we achieved long-duration TERS imaging of a micrometer-sized WS(2) sample for 6 hours in a reproducible manner. Our ultrastable TERS system enabled to reveal the defect density on the surface of tungsten disulfide layers in large area equivalent to the device scale. It also helped us to detect rare defect-related optical signals from the sample. The present study paves ways to evaluate nanoscale defects of 2D materials in large area and to unveil remarkable optical and chemical properties of large-sized nanostructured materials. |
format | Online Article Text |
id | pubmed-9286508 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | American Association for the Advancement of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-92865082022-07-29 Ultrastable tip-enhanced hyperspectral optical nanoimaging for defect analysis of large-sized WS(2) layers Kato, Ryo Moriyama, Toki Umakoshi, Takayuki Yano, Taka-aki Verma, Prabhat Sci Adv Physical and Materials Sciences Optical nanoimaging techniques, such as tip-enhanced Raman spectroscopy (TERS), are nowadays indispensable for chemical and optical characterization in the entire field of nanotechnology and have been extensively used for various applications, such as visualization of nanoscale defects in two-dimensional (2D) materials. However, it is still challenging to investigate micrometer-sized sample with nanoscale spatial resolution because of severe limitation of measurement time due to drift of the experimental system. Here, we achieved long-duration TERS imaging of a micrometer-sized WS(2) sample for 6 hours in a reproducible manner. Our ultrastable TERS system enabled to reveal the defect density on the surface of tungsten disulfide layers in large area equivalent to the device scale. It also helped us to detect rare defect-related optical signals from the sample. The present study paves ways to evaluate nanoscale defects of 2D materials in large area and to unveil remarkable optical and chemical properties of large-sized nanostructured materials. American Association for the Advancement of Science 2022-07-15 /pmc/articles/PMC9286508/ /pubmed/35857514 http://dx.doi.org/10.1126/sciadv.abo4021 Text en Copyright © 2022 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY). https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Physical and Materials Sciences Kato, Ryo Moriyama, Toki Umakoshi, Takayuki Yano, Taka-aki Verma, Prabhat Ultrastable tip-enhanced hyperspectral optical nanoimaging for defect analysis of large-sized WS(2) layers |
title | Ultrastable tip-enhanced hyperspectral optical nanoimaging for defect analysis of large-sized WS(2) layers |
title_full | Ultrastable tip-enhanced hyperspectral optical nanoimaging for defect analysis of large-sized WS(2) layers |
title_fullStr | Ultrastable tip-enhanced hyperspectral optical nanoimaging for defect analysis of large-sized WS(2) layers |
title_full_unstemmed | Ultrastable tip-enhanced hyperspectral optical nanoimaging for defect analysis of large-sized WS(2) layers |
title_short | Ultrastable tip-enhanced hyperspectral optical nanoimaging for defect analysis of large-sized WS(2) layers |
title_sort | ultrastable tip-enhanced hyperspectral optical nanoimaging for defect analysis of large-sized ws(2) layers |
topic | Physical and Materials Sciences |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9286508/ https://www.ncbi.nlm.nih.gov/pubmed/35857514 http://dx.doi.org/10.1126/sciadv.abo4021 |
work_keys_str_mv | AT katoryo ultrastabletipenhancedhyperspectralopticalnanoimagingfordefectanalysisoflargesizedws2layers AT moriyamatoki ultrastabletipenhancedhyperspectralopticalnanoimagingfordefectanalysisoflargesizedws2layers AT umakoshitakayuki ultrastabletipenhancedhyperspectralopticalnanoimagingfordefectanalysisoflargesizedws2layers AT yanotakaaki ultrastabletipenhancedhyperspectralopticalnanoimagingfordefectanalysisoflargesizedws2layers AT vermaprabhat ultrastabletipenhancedhyperspectralopticalnanoimagingfordefectanalysisoflargesizedws2layers |