Cargando…
Extraordinary Focusing Effect of Surface Nanolenses in Total Internal Reflection Mode
[Image: see text] Microscopic lenses are paramount in solar energy harvesting, optical devices, and imaging technologies. This work reports an extraordinary focusing effect exhibited by a surface nanolens (i.e., with at least one dimension of subwavelength) that is situated in an evanescent field fr...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2018
|
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6276033/ https://www.ncbi.nlm.nih.gov/pubmed/30555903 http://dx.doi.org/10.1021/acscentsci.8b00501 |
_version_ | 1783377934073987072 |
---|---|
author | Dyett, Brendan Zhang, Qiming Xu, Qiwei Wang, Xihua Zhang, Xuehua |
author_facet | Dyett, Brendan Zhang, Qiming Xu, Qiwei Wang, Xihua Zhang, Xuehua |
author_sort | Dyett, Brendan |
collection | PubMed |
description | [Image: see text] Microscopic lenses are paramount in solar energy harvesting, optical devices, and imaging technologies. This work reports an extraordinary focusing effect exhibited by a surface nanolens (i.e., with at least one dimension of subwavelength) that is situated in an evanescent field from the total internal reflection (TIR) of light illuminated to the supporting substrate above the critical angle. Our measurements show that the position, shape, and size of the surface area with enhanced light intensity are determined by the geometry of the nanolens and the incident angle, in good agreement with simulation results. This strong focusing effect of the surface nanolens is shown to significantly promote the plasmonic effect of deposited gold nanoparticles on the lens surface inlight conversion and to vaporize surrounding water to microbubbles by using low laser power. This work further demonstrates that the light redistribution by the surface nanolens in TIR enables a range of novel applications in selectively local visualization of specimens in fluorescence imaging, optical trapping of colloids from an external flow, and selective materials deposition from photoreactions. |
format | Online Article Text |
id | pubmed-6276033 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-62760332018-12-15 Extraordinary Focusing Effect of Surface Nanolenses in Total Internal Reflection Mode Dyett, Brendan Zhang, Qiming Xu, Qiwei Wang, Xihua Zhang, Xuehua ACS Cent Sci [Image: see text] Microscopic lenses are paramount in solar energy harvesting, optical devices, and imaging technologies. This work reports an extraordinary focusing effect exhibited by a surface nanolens (i.e., with at least one dimension of subwavelength) that is situated in an evanescent field from the total internal reflection (TIR) of light illuminated to the supporting substrate above the critical angle. Our measurements show that the position, shape, and size of the surface area with enhanced light intensity are determined by the geometry of the nanolens and the incident angle, in good agreement with simulation results. This strong focusing effect of the surface nanolens is shown to significantly promote the plasmonic effect of deposited gold nanoparticles on the lens surface inlight conversion and to vaporize surrounding water to microbubbles by using low laser power. This work further demonstrates that the light redistribution by the surface nanolens in TIR enables a range of novel applications in selectively local visualization of specimens in fluorescence imaging, optical trapping of colloids from an external flow, and selective materials deposition from photoreactions. American Chemical Society 2018-10-19 2018-11-28 /pmc/articles/PMC6276033/ /pubmed/30555903 http://dx.doi.org/10.1021/acscentsci.8b00501 Text en Copyright © 2018 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes. |
spellingShingle | Dyett, Brendan Zhang, Qiming Xu, Qiwei Wang, Xihua Zhang, Xuehua Extraordinary Focusing Effect of Surface Nanolenses in Total Internal Reflection Mode |
title | Extraordinary Focusing Effect of Surface Nanolenses
in Total Internal Reflection Mode |
title_full | Extraordinary Focusing Effect of Surface Nanolenses
in Total Internal Reflection Mode |
title_fullStr | Extraordinary Focusing Effect of Surface Nanolenses
in Total Internal Reflection Mode |
title_full_unstemmed | Extraordinary Focusing Effect of Surface Nanolenses
in Total Internal Reflection Mode |
title_short | Extraordinary Focusing Effect of Surface Nanolenses
in Total Internal Reflection Mode |
title_sort | extraordinary focusing effect of surface nanolenses
in total internal reflection mode |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6276033/ https://www.ncbi.nlm.nih.gov/pubmed/30555903 http://dx.doi.org/10.1021/acscentsci.8b00501 |
work_keys_str_mv | AT dyettbrendan extraordinaryfocusingeffectofsurfacenanolensesintotalinternalreflectionmode AT zhangqiming extraordinaryfocusingeffectofsurfacenanolensesintotalinternalreflectionmode AT xuqiwei extraordinaryfocusingeffectofsurfacenanolensesintotalinternalreflectionmode AT wangxihua extraordinaryfocusingeffectofsurfacenanolensesintotalinternalreflectionmode AT zhangxuehua extraordinaryfocusingeffectofsurfacenanolensesintotalinternalreflectionmode |