Synthesis, Characterization, and Photothermal Study of Plasmonic Nanostructures using Luminescence Nanomaterials
| Main Author: | |
|---|---|
| Language: | English |
| Published: |
Ohio University / OhioLINK
2019
|
| Subjects: | |
| Online Access: | http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1553788360252461 |
| id |
ndltd-OhioLink-oai-etd.ohiolink.edu-ohiou1553788360252461 |
|---|---|
| record_format |
oai_dc |
| spelling |
ndltd-OhioLink-oai-etd.ohiolink.edu-ohiou15537883602524612021-08-03T07:09:47Z Synthesis, Characterization, and Photothermal Study of Plasmonic Nanostructures using Luminescence Nanomaterials Rafiei Miandashti, Ali Chemistry Materials Science Nanoscience Nanotechnology Upconverting Nanoparticles Nanothermometry Nanoparticles Gold Nanoparticles Chiral Nanostructures Metal nanoparticles have exceptional optical, catalytic and electrical properties at nanoscale size that attract a large amount of research in various aspects of nanoscience and nanotechnology. In addition to several unique optical, electrical and physical properties; metal nanoparticles also show “photothermal property”. Photothermal property is related to the feature that makes metal nanoparticles strong absorber of electromagnetic radiation which turns the light energy into heat energy. Many chemical and catalytic properties can be driven by the heat generated by metal nanoparticles. Studying the heat generation and heat dissipation properties of a nanosystem to its surrounding is vital for developing efficient and optimal devices, treatment methods and chemical processes.This dissertation presents design, characterization, and fabrication of nanostructures for fundamental photothermal studies of optically excited gold nanostructures using trivalent erbium ion (Er3+) emission nanothermometry. Nanostructures are synthesized, fabricated and commercially purchased to develop strategies to obtain the photothermal properties of gold nanostructures. The first project of this dissertation explores a new thermal imaging technique that explores a sub-diffraction thermal imaging technique that has better spatial resolution than previously introduced far-field thermal microscopy. This chapter investigates the steady state.thermal imaging of different sized clusters of gold nanoparticles and develops a model that explains the scaling law, collective heating, and the effect of size in heat dissipation from plasmonic nanoparticles.In the second project, we develop a heater-thermometer nanoparticle that can simultaneously heat the surrounding medium and locally measure the temperature. We found that the emission of gold decorated upconverting nanoparticles (UCNPs) is quenched with temperature. We obtain a linear relationship between the calculated and measured temperatures showing that gold decorated UCNPs are reliable similar to plain UCNPs for local temperature measurements.In the third project, we have developed a new time-resolved temperature measurement technique which relies on temperature-jump luminescence thermometry using NaYF4:Yb3+: Er3+ nanocrystals. This technique is based on optical thermometry using UCNPs and does not have the shortcomings related to changes in the optical properties of the surrounding dielectric environment.In the fourth project, we synthesized chiral helical gold nanostructures that show a strong circular dichroism effect and investigated their optical and photothermal potential using luminescence thermometry. 2019-06-12 English text Ohio University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1553788360252461 http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1553788360252461 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws. |
| collection |
NDLTD |
| language |
English |
| sources |
NDLTD |
| topic |
Chemistry Materials Science Nanoscience Nanotechnology Upconverting Nanoparticles Nanothermometry Nanoparticles Gold Nanoparticles Chiral Nanostructures |
| spellingShingle |
Chemistry Materials Science Nanoscience Nanotechnology Upconverting Nanoparticles Nanothermometry Nanoparticles Gold Nanoparticles Chiral Nanostructures Rafiei Miandashti, Ali Synthesis, Characterization, and Photothermal Study of Plasmonic Nanostructures using Luminescence Nanomaterials |
| author |
Rafiei Miandashti, Ali |
| author_facet |
Rafiei Miandashti, Ali |
| author_sort |
Rafiei Miandashti, Ali |
| title |
Synthesis, Characterization, and Photothermal Study of Plasmonic Nanostructures using Luminescence Nanomaterials |
| title_short |
Synthesis, Characterization, and Photothermal Study of Plasmonic Nanostructures using Luminescence Nanomaterials |
| title_full |
Synthesis, Characterization, and Photothermal Study of Plasmonic Nanostructures using Luminescence Nanomaterials |
| title_fullStr |
Synthesis, Characterization, and Photothermal Study of Plasmonic Nanostructures using Luminescence Nanomaterials |
| title_full_unstemmed |
Synthesis, Characterization, and Photothermal Study of Plasmonic Nanostructures using Luminescence Nanomaterials |
| title_sort |
synthesis, characterization, and photothermal study of plasmonic nanostructures using luminescence nanomaterials |
| publisher |
Ohio University / OhioLINK |
| publishDate |
2019 |
| url |
http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1553788360252461 |
| work_keys_str_mv |
AT rafieimiandashtiali synthesischaracterizationandphotothermalstudyofplasmonicnanostructuresusingluminescencenanomaterials |
| _version_ |
1719454872678432768 |