{"doi":"10.1063/5.0164668","title":"A low-cost goniometer for contact angle measurements using drop image analysis: Development and validation","abstract":"<jats:p>Contact angle measurements are a widely used method for evaluating surface wettability, but their accessibility is limited by the high cost of commercial goniometers. To address this issue, we developed a low-cost prototype goniometer using locally available materials and a smartphone-based image analysis system to measure contact angles. We validated our approach by comparing its results with those of a standard goniometer for both organic and inorganic materials. For organic samples, the accuracy is greater than 86%, and for inorganic samples, it is greater than 94%. The good agreement between the two methods demonstrates the feasibility of our proposed method for accurate contact angle measurements at a lower cost.</jats:p>","journal":"AIP Advances","year":2023,"id":26223,"datarank":0.5314342310866864,"base_score":2.0794415416798357,"endowment":2.0794415416798357,"self_citation_contribution":0.31191623125197543,"citation_network_contribution":0.21951799983471093,"self_endowment_contribution":0.31191623125197543,"citer_contribution":0.21951799983471093,"corpus_percentile":null,"corpus_rank":null,"citation_count":7,"citer_count":7,"citers_with_citation_signal":5,"citers_with_endowment":5,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":152211,"name":"Angash Niroula","orcid":null,"position":1,"is_corresponding":false},{"id":152212,"name":"Pooja Shrestha","orcid":null,"position":2,"is_corresponding":false},{"id":152213,"name":"Bimal Paudel","orcid":null,"position":3,"is_corresponding":false},{"id":152214,"name":"Deepak Subedi","orcid":null,"position":4,"is_corresponding":false},{"id":152215,"name":"Raju Khanal","orcid":"0000-0001-8450-4692","position":5,"is_corresponding":false},{"id":152210,"name":"Roshan Chalise","orcid":"0000-0003-0593-7700","position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"base_score":2.0794415416798357,"endowment":2.0794415416798357,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"18998881","pmcid":null,"openalex_id":"https://openalex.org/W4386034979","authors":[],"funders":[{"funder_name":"University Grants Commission, Nepal","grant_id":"PhD-78/79-S and T-16","title":null},{"funder_name":"National Priority Project, TU, Nepal","grant_id":"TU-NPAR-077/78-ERG-12","title":null}],"total_grants":2,"fwci":0.743,"citation_percentile":0.66220781,"influential_citations":0,"citation_trend":[{"year":2024,"count":2},{"year":2025,"count":5}],"oa_status":"gold","license":"cc-by","oa_locations":[{"url":"https://pubs.aip.org/aip/adv/article-pdf/doi/10.1063/5.0164668/18092183/085123_1_5.0164668.pdf","host_type":"journal"},{"url":"https://pubs.aip.org/aip/adv/article-pdf/doi/10.1063/5.0164668/18092183/085123_1_5.0164668.pdf","host_type":"GOLD"},{"url":"https://pubs.aip.org/aip/adv/article-pdf/doi/10.1063/5.0164668/18092183/085123_1_5.0164668.pdf","host_type":"publisher"},{"url":"https://doi.org/10.1063/5.0164668","host_type":"journal"},{"url":"https://doaj.org/article/9cfa133074d8461ab7e1d194ae9d5f3e","host_type":"repository"}],"fields_of_study":["Surface Modification and Superhydrophobicity","Adhesion, Friction, and Surface Interactions","Surface Roughness and Optical Measurements","Materials Science"],"mesh_terms":[],"keywords":["Goniometer","Contact angle","Sessile drop technique","Wetting","Materials science","Optics","Measure (data warehouse)","Computer science","Composite material","Physics","Data mining"],"sdg_mappings":[],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-06-08T12:49:58.490238Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}