A novel plasmonic nanostructure for localized near-field light enhancement
Autor(a) principal: | |
---|---|
Data de Publicação: | 2019 |
Tipo de documento: | Dissertação |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10362/94398 |
Resumo: | The combination of plasmonic structures with dielectric materials, metallic oxides and in particular, with two dimensional (2D) materials has been a subject of great interest in the scientific community for a wide range of applications, such as optoelectronic devices, solar cells, or photochemistry. Plasmonic properties have the potential to enhance the capabilities of 2D materials for harvesting light, which alone have a low efficiency due to low absorption (approximately only 11%). This work presents a new plasmonic structure, “nanohippo” with a perspective to integrate a monolayer material inside the cavity, being this nanostructure directly excited by the incident light taking advantage of localized surface plasmonic resonance (LSPR). The samples were prepared by colloidal lithography and material deposition was made through an electron beam assisted evaporation system. A fabrication method was developed to create a cavity by using a sacrificial material and etching it later on. The sample’s characterization consisted in a morphologic analysis by Scanning Electron Microscopy (SEM), the optical response was studied both theoretically and experimentally by Finite-difference-time-domain (FDTD) as well as experimentally by spectrophotometry. Finally, an elemental analysis was performed via X-ray photoelectron microscopy (XPS). The diameter and height of the structures were studied (different sizes nanoparticles and thicker layers of bottom layer gold) reaching to a structure that presented a plasmonic cavity. This nanostructure, with a new geometry, presented a visible plasmonic nanocavity with up to sixty times more enhancement of the electrical field inside it. |
id |
RCAP_cc9e5e0c4ecaa86c9c862eb28367a9ac |
---|---|
oai_identifier_str |
oai:run.unl.pt:10362/94398 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
spelling |
A novel plasmonic nanostructure for localized near-field light enhancementplasmonic nanostructureLocalized surface plasmonic resonancecolloidal lithography2D materials integrationDomínio/Área Científica::Engenharia e Tecnologia::NanotecnologiaThe combination of plasmonic structures with dielectric materials, metallic oxides and in particular, with two dimensional (2D) materials has been a subject of great interest in the scientific community for a wide range of applications, such as optoelectronic devices, solar cells, or photochemistry. Plasmonic properties have the potential to enhance the capabilities of 2D materials for harvesting light, which alone have a low efficiency due to low absorption (approximately only 11%). This work presents a new plasmonic structure, “nanohippo” with a perspective to integrate a monolayer material inside the cavity, being this nanostructure directly excited by the incident light taking advantage of localized surface plasmonic resonance (LSPR). The samples were prepared by colloidal lithography and material deposition was made through an electron beam assisted evaporation system. A fabrication method was developed to create a cavity by using a sacrificial material and etching it later on. The sample’s characterization consisted in a morphologic analysis by Scanning Electron Microscopy (SEM), the optical response was studied both theoretically and experimentally by Finite-difference-time-domain (FDTD) as well as experimentally by spectrophotometry. Finally, an elemental analysis was performed via X-ray photoelectron microscopy (XPS). The diameter and height of the structures were studied (different sizes nanoparticles and thicker layers of bottom layer gold) reaching to a structure that presented a plasmonic cavity. This nanostructure, with a new geometry, presented a visible plasmonic nanocavity with up to sixty times more enhancement of the electrical field inside it.Sutherland, DuncanMendes, ManuelRUNDuarte, Maria Inês Caramelo2020-03-17T11:59:29Z2019-1220192019-12-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10362/94398enginfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-03-11T04:42:22Zoai:run.unl.pt:10362/94398Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:37:56.498405Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
A novel plasmonic nanostructure for localized near-field light enhancement |
title |
A novel plasmonic nanostructure for localized near-field light enhancement |
spellingShingle |
A novel plasmonic nanostructure for localized near-field light enhancement Duarte, Maria Inês Caramelo plasmonic nanostructure Localized surface plasmonic resonance colloidal lithography 2D materials integration Domínio/Área Científica::Engenharia e Tecnologia::Nanotecnologia |
title_short |
A novel plasmonic nanostructure for localized near-field light enhancement |
title_full |
A novel plasmonic nanostructure for localized near-field light enhancement |
title_fullStr |
A novel plasmonic nanostructure for localized near-field light enhancement |
title_full_unstemmed |
A novel plasmonic nanostructure for localized near-field light enhancement |
title_sort |
A novel plasmonic nanostructure for localized near-field light enhancement |
author |
Duarte, Maria Inês Caramelo |
author_facet |
Duarte, Maria Inês Caramelo |
author_role |
author |
dc.contributor.none.fl_str_mv |
Sutherland, Duncan Mendes, Manuel RUN |
dc.contributor.author.fl_str_mv |
Duarte, Maria Inês Caramelo |
dc.subject.por.fl_str_mv |
plasmonic nanostructure Localized surface plasmonic resonance colloidal lithography 2D materials integration Domínio/Área Científica::Engenharia e Tecnologia::Nanotecnologia |
topic |
plasmonic nanostructure Localized surface plasmonic resonance colloidal lithography 2D materials integration Domínio/Área Científica::Engenharia e Tecnologia::Nanotecnologia |
description |
The combination of plasmonic structures with dielectric materials, metallic oxides and in particular, with two dimensional (2D) materials has been a subject of great interest in the scientific community for a wide range of applications, such as optoelectronic devices, solar cells, or photochemistry. Plasmonic properties have the potential to enhance the capabilities of 2D materials for harvesting light, which alone have a low efficiency due to low absorption (approximately only 11%). This work presents a new plasmonic structure, “nanohippo” with a perspective to integrate a monolayer material inside the cavity, being this nanostructure directly excited by the incident light taking advantage of localized surface plasmonic resonance (LSPR). The samples were prepared by colloidal lithography and material deposition was made through an electron beam assisted evaporation system. A fabrication method was developed to create a cavity by using a sacrificial material and etching it later on. The sample’s characterization consisted in a morphologic analysis by Scanning Electron Microscopy (SEM), the optical response was studied both theoretically and experimentally by Finite-difference-time-domain (FDTD) as well as experimentally by spectrophotometry. Finally, an elemental analysis was performed via X-ray photoelectron microscopy (XPS). The diameter and height of the structures were studied (different sizes nanoparticles and thicker layers of bottom layer gold) reaching to a structure that presented a plasmonic cavity. This nanostructure, with a new geometry, presented a visible plasmonic nanocavity with up to sixty times more enhancement of the electrical field inside it. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-12 2019 2019-12-01T00:00:00Z 2020-03-17T11:59:29Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10362/94398 |
url |
http://hdl.handle.net/10362/94398 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
|
_version_ |
1799137995838717952 |