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Record W3011418073 · doi:10.22215/etd/2020-13969

Functional Properties of Hybrid Resonances in Plasmonic Nanocrystals

2020· dissertation· en· W3011418073 on OpenAlexaff
Daniel Prezgot

Bibliographic record

Venuenot available
Typedissertation
Languageen
FieldMaterials Science
TopicGold and Silver Nanoparticles Synthesis and Applications
Canadian institutionsCarleton University
Fundersnot available
KeywordsPlasmonMaterials scienceSurface plasmon resonanceSurface plasmonNanocrystalOptoelectronicsLocalized surface plasmonNanotechnologyPhotothermal therapyDielectricNanoparticleOpticsPhysics

Abstract

fetched live from OpenAlex

Metal nanocrystals support unique light-matter interactions through a phenomenon known as the localized surface plasmon resonance (LSPR).These resonances show a great deal of sensitivity to their local environment, and by altering this environment it is possible to produce new, "hybridized" plasmon modes.The far-field spectral qualities, and the near-field electromagnetic properties can by heavily manipulated through the generation of hybridized plasmon modes.This work explores the properties and functions of hybridized plasmon modes in a variety of systems.Finite-difference time-domain modelling use used to correlate the experimental spectral response is with the calculated near-field spatial distribution of hybridized modes in a number of systems involving silver nanocubes (AgNC).These systems demonstrate it is possible to carefully monitor the environment of a nanocrystal, induce an unusually sharp spectral extinction in dielectric-coated AgNCs, and manipulate the spatial distribution of plasmon modes in colloidal composite Ag@Cu2O core-shell nanocrystals.These properties are applied to functional materials, including photothermal and colour patterning of a plasmonic system driven by the embedment of an AgNC into a polymer matrix.The spectral signature of hybridized plasmon modes is used to both characterize and manipulate the degree of photothermal heating in this thermoplasmonic patterning system.Hybridized gap-plasmons are used to generate wide range of colours, with controllable palettes using AgNC-over-Au and AgNC-over-Ag nanoparticle-over-mirror (NPoM) films.Lastly the potential for alternative plasmonic materials for ultraviolet (UV) plasmonics was explored.The potential for In and Al nanocrystals for UV surface-enhanced Raman spectroscopy was investigated.All these systems demonstrate the potential and advantage of using hybridized plasmon modes to manipulate the far-field and near-field optical response of functional plasmonic materials.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Direct model labels (unvalidated)

Per-model category and study-design labels from the labeling rounds. They are machine output, unvalidated, and the disagreement between models ships as data. No study design here is MEDLINE-validated yet.

Model armCategoriesStudy designConfidence
gemmano category
Domain: not available · Genre: Empirical
About the Canadian research system: no · About a Canadian topic: no
Bench or experimentalhigh
gptno category
Domain: not available · Genre: Empirical
About the Canadian research system: no · About a Canadian topic: no
Bench or experimentalmedium
models agreeAgreement compares identical category sets and study designs across arms.

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.001
Threshold uncertainty score0.005

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0010.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.029
GPT teacher head0.224
Teacher spread0.195 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Labeled directly by 2 models reading the full record.

The models applied no category: nothing in the taxonomy fit this work.
Study designBench or experimental
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations1
Published2020
Admission routes1
Has abstractyes

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