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Record W3167735704 · doi:10.11575/prism/38804

Effect of Roughness on Wetting of Solids

2021· dissertation· en· W3167735704 on OpenAlexfundno aff
Xuemin Huang

Bibliographic record

VenueOpen MIND · 2021
Typedissertation
Languageen
FieldMaterials Science
TopicSurface Modification and Superhydrophobicity
Canadian institutionsnot available
FundersCanada First Research Excellence FundNatural Sciences and Engineering Research Council of CanadaMitacs
KeywordsWettingSurface finishSurface roughnessMaterials scienceComposite material

Abstract

fetched live from OpenAlex

The wetting of rough surfaces and the three-phase contact line are complex and vary according to the dimensions of the roughness and its spatial heterogeneity. The results documented in this thesis show that the apparent contact angle varies around the periphery of the water droplet due to the roughness of the surface on the first contact. Also, repeated wetting of the droplet on the surface reveals that the apparent contact angle changes due to residual liquid remaining on the rough surface. The wetting of water droplets is even more complex for curved rough surfaces. For these surfaces, at the three-phase contact line, the line tension contributes to the force balance. In this research, experiments reveal the effect of the roughness and curvature of a solid surface on the apparent contact angle as well as the line tension: the greater the roughness and the curvature of the solid, the larger is the line tension. Evaporation of sessile water droplets on solid surfaces has drawn much attention. Classic models do not describe evaporation near the three-phase contact line of rough surfaces. Here, we describe a new model for evaporation of sessile droplets on rough solid surfaces and compare the results to experimental results. The results suggest that the evaporation rate is larger on rougher surfaces. Electrokinetic phenomena which are founded on the physical mechanisms of streaming potential, zeta potential, electrical double layer (EDL) have an impact on rock wettability. If an electrolyte flows through porous rock, given the EDL and charge transport, potentially a current could occur in the system. In other words, given the existing salt concentration in reservoir water, there is potential that the moving liquid during production or water flooding or under natural flow could generate a current. Here, we report on experiments to explore the idea of the current generation from the flow of electrolytes through porous sandstone.

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)0.001
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesInsufficient 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 score0.035
Threshold uncertainty score0.995

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
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)0.0060.000

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 head0.028
GPT teacher head0.341
Teacher spread0.313 · 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.

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
Published2021
Admission routes1
Has abstractyes

Explore more

Same venueOpen MINDSame topicSurface Modification and SuperhydrophobicityFrench-language works237,207