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XAFS studies of Pt nanoparticles deposition on Si nanowires

2009· article· en· W2117109414 on OpenAlexafffund
Lijia Liu, Michael W. Murphy, JH Ko, Tsun‐Kong Sham

Bibliographic record

VenueJournal of Physics Conference Series · 2009
Typearticle
Languageen
FieldEngineering
TopicNanowire Synthesis and Applications
Canadian institutionsWestern University
FundersNatural Sciences and Engineering Research Council of CanadaU.S. Department of Energy
KeywordsX-ray absorption fine structureXANESMaterials scienceBimetallic stripNanoparticleNanotechnologyNanowireAbsorption (acoustics)AlloyX-ray photoelectron spectroscopyChemical engineeringEtching (microfabrication)Deposition (geology)Layer (electronics)MetallurgySpectral lineComposite materialSpectroscopy

Abstract

fetched live from OpenAlex

We have studied X-ray absorption fine structures (XAFS) of Pt nanoparticles (PtNPs) which were deposited on silicon nanowires (SiNWs). SiNWs were fabricated via an electroless chemical etching method and served as the template for the immobilization of PtNPs. PtNPs electrolessly reduced from their ionic solution by HF-treated SiNWs were found to deposit on the tips of the SiNWs. The electronic structures of Pt were studied using X-ray absorption near-edge structures (XANES) at Pt L3,2-edge. For comparison, we also examined the Pt L3,2-edge and the Au L3-edge XANES of Pt-Au bimetallic nanoparticles co-deposited on SiNWs. We found that the PtNPs showed slightly increased whiteline intensity compared to that of Pt foil. When Au was deposited together with Pt, the resonance peaks of the NPs were slightly, but systematically shifted due to the formation of Pt-Au alloy.

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 distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation 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 score0.153
Threshold uncertainty score0.334

Codex and Gemma teacher scores by category

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 head0.030
GPT teacher head0.265
Teacher spread0.234 · 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 teacher head, 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

Citations2
Published2009
Admission routes2
Has abstractyes

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