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Record W2981198775 · doi:10.22215/etd/2016-11613

Surfactant-Assisted Chemical Vapour Deposition of Gold Nanoplates with Highly Smooth Surface

2016· dissertation· en· W2981198775 on OpenAlexaff
Weipeng Zhang

Bibliographic record

Venuenot available
Typedissertation
Languageen
FieldMaterials Science
TopicGold and Silver Nanoparticles Synthesis and Applications
Canadian institutionsCarleton University
Fundersnot available
KeywordsSelected area diffractionX-ray photoelectron spectroscopyTetrahydrothiopheneChemical vapor depositionPulmonary surfactantMaterials scienceParticle (ecology)Electron diffractionNanotechnologyColloidal goldParticle sizeAnalytical Chemistry (journal)Chemical engineeringChemistryDiffractionNanoparticleTransmission electron microscopyPhysical chemistryStereochemistryOrganic chemistryOptics

Abstract

fetched live from OpenAlex

Tetrahydrothiophene (THT), as a surfactant, was studied for the shape control of gold nanoplates via chemical vapour deposition (CVD).Dense gold nanoplates (6 μm) with a highly smooth surface were deposited by using 1,3-diisopropyl-imidazol-2-ylidene gold (I) hexamethyldisilazide at 370˚C, with 45 mtorr of THT.Similar but isolated nanoplates were attained with 15-35 mtorr of THT at 430˚C.Along with single-crystalline structure, a {111} plane of the nanoplates was confirmed by determining the gold stacking fault, 1 3 {422} diffractions in selected area electron diffraction (SAED) patterns.Purity of the nanoplates was shown by energy dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS) analysis, both showing gold metal without significant sulfur impurities.THT preferably capped the gold {111} plane which lowered the surface energy, leading to a smooth surface and large size.Gold precursor supply influenced the particle size and mechanism of the crystal growth, as well as the particle density.iii Acknowledgements First of all, I would like to give my most sincerely thank to my parents for the support of my study abroad, no matter on spirit or finance.I love you, forever.Second, thanks, Seá n, my supervisor, as well as the first Canadian I meet.I will never forget your professional attitudes to science

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

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: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.001
Threshold uncertainty score0.003

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)0.0000.000

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 head0.010
GPT teacher head0.225
Teacher spread0.216 · 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

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

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

Citations0
Published2016
Admission routes1
Has abstractyes

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