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Record W2974849466 · doi:10.1088/2053-1591/ab44da

Synthesis of amorphous SiO<sub>2</sub> nanowires by one-step low temperature hydrothermal process

2019· article· en· W2974849466 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueMaterials Research Express · 2019
Typearticle
Languageen
FieldMaterials Science
TopicSilicon Nanostructures and Photoluminescence
Canadian institutionsRegroupement Québécois sur les Matériaux de Pointe
Fundersnot available
KeywordsX-ray photoelectron spectroscopyNanowireAmorphous solidMaterials scienceAmmonium hydroxidePhotoluminescenceAqueous solutionHydrothermal circulationChemical engineeringScanning electron microscopeTransmission electron microscopyHydroxideHigh-resolution transmission electron microscopySilicateHydrothermal synthesisAnalytical Chemistry (journal)NanotechnologyCrystallographyChemistryOrganic chemistryComposite materialOptoelectronics

Abstract

fetched live from OpenAlex

A novel procedure for the growth of amorphous SiO 2 nanowires by a one-step hydrothermal process directly using commercial silicate glass in cheap aqueous ammonium hydroxide without any other catalyst is reported. The effect of concentration of aqueous ammonium hydroxide and reaction time on synthesized product was investigated. It was found that SiO 2 nanowires with high aspect ratio can be synthesized using silicate glass at 170 °C in 2.5 mol l −1 aqueous ammonium hydroxide for 7 h. Scanning electron microscopy, high resolution transmission electron microscopy and x-ray diffraction results showed that the products were amorphous SiO 2 nanowires with diameters of 20∼100 nm and lengths of several tens of micrometers. X-ray photoelectron spectroscopy (XPS) indicated that the SiO 2 nanowires retained small amounts of MgO and CaO from the silicate glass. The result of photoluminescence (PL) spectra of the nanowires exhibited a strong, sharp photoluminescence (PL) emission peak, centered at 426 nm. Based on the results, the OH-assisted hydrolysis of the glass has been proposed as the growth mechanism of the SiO 2 nanowires.

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.

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)0.002
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow), Insufficient payload (model declined to judge)
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 score0.003
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0020.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0010.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0030.000

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 head0.014
GPT teacher head0.272
Teacher spread0.259 · 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