Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W4387653525', 'doi': 'https://doi.org/10.3390/mi14101932', 'title': 'Tunable Helmholtz Resonators Using Multiple Necks', 'display_name': 'Tunable Helmholtz Resonators Using Multiple Necks', 'publication_year': 2023, 'publication_date': '2023-10-15', 'ids': {'openalex': 'https://openalex.org/W4387653525', 'doi': 'https://doi.org/10.3390/mi14101932', 'pmid': 'https://pubmed.ncbi.nlm.nih.gov/37893369'}, 'language': 'en', 'primary_location': {'is_oa': True, 'landing_page_url': 'https://doi.org/10.3390/mi14101932', 'pdf_url': 'https://www.mdpi.com/2072-666X/14/10/1932/pdf?version=1697361575', 'source': {'id': 'https://openalex.org/S96702057', 'display_name': 'Micromachines', 'issn_l': '2072-666X', 'issn': ['2072-666X'], 'is_oa': True, 'is_in_doaj': True, 'is_core': True, 'host_organization': 'https://openalex.org/P4310310987', 'host_organization_name': 'Multidisciplinary Digital Publishing Institute', 'host_organization_lineage': ['https://openalex.org/P4310310987'], 'host_organization_lineage_names': ['Multidisciplinary Digital Publishing Institute'], 'type': 'journal'}, 'license': 'cc-by', 'license_id': 'https://openalex.org/licenses/cc-by', 'version': 'publishedVersion', 'is_accepted': True, 'is_published': True}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': ['crossref', 'pubmed'], 'open_access': {'is_oa': True, 'oa_status': 'gold', 'oa_url': 'https://www.mdpi.com/2072-666X/14/10/1932/pdf?version=1697361575', 'any_repository_has_fulltext': True}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5014149566', 'display_name': 'Nikolaos M. Papadakis', 'orcid': 'https://orcid.org/0000-0002-9609-3613'}, 'institutions': [{'id': 'https://openalex.org/I55741626', 'display_name': 'Technical University of Crete', 'ror': 'https://ror.org/03f8bz564', 'country_code': 'GR', 'type': 'education', 'lineage': ['https://openalex.org/I55741626']}], 'countries': ['GR'], 'is_corresponding': True, 'raw_author_name': 'Nikolaos M. Papadakis', 'raw_affiliation_strings': ['Institute of Computational Mechanics and Optimization (Co.Mec.O), School of Production Engineering and Management, Technical University of Crete, 73100 Chania, Greece'], 'affiliations': [{'raw_affiliation_string': 'Institute of Computational Mechanics and Optimization (Co.Mec.O), School of Production Engineering and Management, Technical University of Crete, 73100 Chania, Greece', 'institution_ids': ['https://openalex.org/I55741626']}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5039636897', 'display_name': 'Georgios Ε. Stavroulakis', 'orcid': 'https://orcid.org/0000-0001-9199-2110'}, 'institutions': [{'id': 'https://openalex.org/I55741626', 'display_name': 'Technical University of Crete', 'ror': 'https://ror.org/03f8bz564', 'country_code': 'GR', 'type': 'education', 'lineage': ['https://openalex.org/I55741626']}], 'countries': ['GR'], 'is_corresponding': False, 'raw_author_name': 'Georgios E. Stavroulakis', 'raw_affiliation_strings': ['Institute of Computational Mechanics and Optimization (Co.Mec.O), School of Production Engineering and Management, Technical University of Crete, 73100 Chania, Greece'], 'affiliations': [{'raw_affiliation_string': 'Institute of Computational Mechanics and Optimization (Co.Mec.O), School of Production Engineering and Management, Technical University of Crete, 73100 Chania, Greece', 'institution_ids': ['https://openalex.org/I55741626']}]}], 'institution_assertions': [], 'countries_distinct_count': 1, 'institutions_distinct_count': 1, 'corresponding_author_ids': ['https://openalex.org/A5014149566'], 'corresponding_institution_ids': ['https://openalex.org/I55741626'], 'apc_list': {'value': 2000, 'currency': 'CHF', 'value_usd': 2165, 'provenance': 'doaj'}, 'apc_paid': {'value': 2000, 'currency': 'CHF', 'value_usd': 2165, 'provenance': 'doaj'}, 'fwci': 0.233, 'has_fulltext': True, 'fulltext_origin': 'pdf', 'cited_by_count': 2, 'citation_normalized_percentile': {'value': 0.497189, 'is_in_top_1_percent': False, 'is_in_top_10_percent': False}, 'cited_by_percentile_year': {'min': 78, 'max': 84}, 'biblio': {'volume': '14', 'issue': '10', 'first_page': '1932', 'last_page': '1932'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T10822', 'display_name': 'Acoustic Wave Phenomena Research', 'score': 1.0, 'subfield': {'id': 'https://openalex.org/subfields/2204', 'display_name': 'Biomedical Engineering'}, 'field': {'id': 'https://openalex.org/fields/22', 'display_name': 'Engineering'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, 'topics': [{'id': 'https://openalex.org/T10822', 'display_name': 'Acoustic Wave Phenomena Research', 'score': 1.0, 'subfield': {'id': 'https://openalex.org/subfields/2204', 'display_name': 'Biomedical Engineering'}, 'field': {'id': 'https://openalex.org/fields/22', 'display_name': 'Engineering'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, {'id': 'https://openalex.org/T11008', 'display_name': 'Aerodynamics and Acoustics in Jet Flows', 'score': 0.9922, 'subfield': {'id': 'https://openalex.org/subfields/2202', 'display_name': 'Aerospace Engineering'}, 'field': {'id': 'https://openalex.org/fields/22', 'display_name': 'Engineering'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, {'id': 'https://openalex.org/T11692', 'display_name': 'Noise Effects and Management', 'score': 0.9919, 'subfield': {'id': 'https://openalex.org/subfields/3616', 'display_name': 'Speech and Hearing'}, 'field': {'id': 'https://openalex.org/fields/36', 'display_name': 'Health Professions'}, 'domain': {'id': 'https://openalex.org/domains/4', 'display_name': 'Health Sciences'}}], 'keywords': [{'id': 'https://openalex.org/keywords/helmholtz-resonator', 'display_name': 'Helmholtz resonator', 'score': 0.9671691}, {'id': 'https://openalex.org/keywords/helmholtz-free-energy', 'display_name': 'Helmholtz free energy', 'score': 0.90449464}, {'id': 'https://openalex.org/keywords/acoustic-resonance', 'display_name': 'Acoustic resonance', 'score': 0.49078164}, {'id': 'https://openalex.org/keywords/helmholtz-equation', 'display_name': 'Helmholtz equation', 'score': 0.44078612}], 'concepts': [{'id': 'https://openalex.org/C170344590', 'wikidata': 'https://www.wikidata.org/wiki/Q1569889', 'display_name': 'Helmholtz resonator', 'level': 3, 'score': 0.9671691}, {'id': 'https://openalex.org/C27592594', 'wikidata': 'https://www.wikidata.org/wiki/Q865821', 'display_name': 'Helmholtz free energy', 'level': 2, 'score': 0.90449464}, {'id': 'https://openalex.org/C97126364', 'wikidata': 'https://www.wikidata.org/wiki/Q349669', 'display_name': 'Resonator', 'level': 2, 'score': 0.89879674}, {'id': 'https://openalex.org/C24890656', 'wikidata': 'https://www.wikidata.org/wiki/Q82811', 'display_name': 'Acoustics', 'level': 1, 'score': 0.743781}, {'id': 'https://openalex.org/C139210041', 'wikidata': 'https://www.wikidata.org/wiki/Q2145840', 'display_name': 'Resonance (particle physics)', 'level': 2, 'score': 0.6767378}, {'id': 'https://openalex.org/C135628077', 'wikidata': 'https://www.wikidata.org/wiki/Q220184', 'display_name': 'Finite element method', 'level': 2, 'score': 0.6389022}, {'id': 'https://openalex.org/C2778006474', 'wikidata': 'https://www.wikidata.org/wiki/Q2558427', 'display_name': 'Acoustic resonance', 'level': 3, 'score': 0.49078164}, {'id': 'https://openalex.org/C192562407', 'wikidata': 'https://www.wikidata.org/wiki/Q228736', 'display_name': 'Materials science', 'level': 0, 'score': 0.44448778}, {'id': 'https://openalex.org/C18591234', 'wikidata': 'https://www.wikidata.org/wiki/Q860615', 'display_name': 'Helmholtz equation', 'level': 3, 'score': 0.44078612}, {'id': 'https://openalex.org/C121332964', 'wikidata': 'https://www.wikidata.org/wiki/Q413', 'display_name': 'Physics', 'level': 0, 'score': 0.371996}, {'id': 'https://openalex.org/C120665830', 'wikidata': 'https://www.wikidata.org/wiki/Q14620', 'display_name': 'Optics', 'level': 1, 'score': 0.2789315}, {'id': 'https://openalex.org/C182310444', 'wikidata': 'https://www.wikidata.org/wiki/Q1332643', 'display_name': 'Boundary value problem', 'level': 2, 'score': 0.09163204}, {'id': 'https://openalex.org/C109214941', 'wikidata': 'https://www.wikidata.org/wiki/Q18334', 'display_name': 'Particle physics', 'level': 1, 'score': 0.0}, {'id': 'https://openalex.org/C62520636', 'wikidata': 'https://www.wikidata.org/wiki/Q944', 'display_name': 'Quantum mechanics', 'level': 1, 'score': 0.0}, {'id': 'https://openalex.org/C97355855', 'wikidata': 'https://www.wikidata.org/wiki/Q11473', 'display_name': 'Thermodynamics', 'level': 1, 'score': 0.0}], 'mesh': [], 'locations_count': 4, 'locations': [{'is_oa': True, 'landing_page_url': 'https://doi.org/10.3390/mi14101932', 'pdf_url': 'https://www.mdpi.com/2072-666X/14/10/1932/pdf?version=1697361575', 'source': {'id': 'https://openalex.org/S96702057', 'display_name': 'Micromachines', 'issn_l': '2072-666X', 'issn': ['2072-666X'], 'is_oa': True, 'is_in_doaj': True, 'is_core': True, 'host_organization': 'https://openalex.org/P4310310987', 'host_organization_name': 'Multidisciplinary Digital Publishing Institute', 'host_organization_lineage': ['https://openalex.org/P4310310987'], 'host_organization_lineage_names': ['Multidisciplinary Digital Publishing Institute'], 'type': 'journal'}, 'license': 'cc-by', 'license_id': 'https://openalex.org/licenses/cc-by', 'version': 'publishedVersion', 'is_accepted': True, 'is_published': True}, {'is_oa': True, 'landing_page_url': 'https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10609198', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S2764455111', 'display_name': 'PubMed Central', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1299303238', 'host_organization_name': 'National Institutes of Health', 'host_organization_lineage': ['https://openalex.org/I1299303238'], 'host_organization_lineage_names': ['National Institutes of Health'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'publishedVersion', 'is_accepted': True, 'is_published': True}, {'is_oa': True, 'landing_page_url': 'https://doi.org/10.20944/preprints202309.1008.v1', 'pdf_url': 'https://www.preprints.org/manuscript/202309.1008/v1/download', 'source': None, 'license': 'cc-by', 'license_id': 'https://openalex.org/licenses/cc-by', 'version': 'submittedVersion', 'is_accepted': False, 'is_published': False}, {'is_oa': False, 'landing_page_url': 'https://pubmed.ncbi.nlm.nih.gov/37893369', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4306525036', 'display_name': 'PubMed', 'issn_l': None, 'issn': None, 'is_oa': False, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1299303238', 'host_organization_name': 'National Institutes of Health', 'host_organization_lineage': ['https://openalex.org/I1299303238'], 'host_organization_lineage_names': ['National Institutes of Health'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}], 'best_oa_location': {'is_oa': True, 'landing_page_url': 'https://doi.org/10.3390/mi14101932', 'pdf_url': 'https://www.mdpi.com/2072-666X/14/10/1932/pdf?version=1697361575', 'source': {'id': 'https://openalex.org/S96702057', 'display_name': 'Micromachines', 'issn_l': '2072-666X', 'issn': ['2072-666X'], 'is_oa': True, 'is_in_doaj': True, 'is_core': True, 'host_organization': 'https://openalex.org/P4310310987', 'host_organization_name': 'Multidisciplinary Digital Publishing Institute', 'host_organization_lineage': ['https://openalex.org/P4310310987'], 'host_organization_lineage_names': ['Multidisciplinary Digital Publishing Institute'], 'type': 'journal'}, 'license': 'cc-by', 'license_id': 'https://openalex.org/licenses/cc-by', 'version': 'publishedVersion', 'is_accepted': True, 'is_published': True}, 'sustainable_development_goals': [{'id': 'https://metadata.un.org/sdg/7', 'score': 0.55, 'display_name': 'Affordable and clean energy'}], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 52, 'referenced_works': ['https://openalex.org/W1972663350', 'https://openalex.org/W1988455001', 'https://openalex.org/W1996156355', 'https://openalex.org/W2000338091', 'https://openalex.org/W2016368348', 'https://openalex.org/W2033245606', 'https://openalex.org/W2034817862', 'https://openalex.org/W2051361163', 'https://openalex.org/W2067535861', 'https://openalex.org/W2090183925', 'https://openalex.org/W2096411124', 'https://openalex.org/W2147990072', 'https://openalex.org/W2152873637', 'https://openalex.org/W2236671839', 'https://openalex.org/W2492430625', 'https://openalex.org/W2516730735', 'https://openalex.org/W2573873209', 'https://openalex.org/W2737430772', 'https://openalex.org/W2761864220', 'https://openalex.org/W2805419917', 'https://openalex.org/W2898533975', 'https://openalex.org/W2909346813', 'https://openalex.org/W2910590235', 'https://openalex.org/W2911426854', 'https://openalex.org/W2914237175', 'https://openalex.org/W2935279520', 'https://openalex.org/W2949799521', 'https://openalex.org/W2952249147', 'https://openalex.org/W2971153769', 'https://openalex.org/W2972443682', 'https://openalex.org/W3009195831', 'https://openalex.org/W3018485360', 'https://openalex.org/W3035455658', 'https://openalex.org/W3082735319', 'https://openalex.org/W3114352485', 'https://openalex.org/W3118416725', 'https://openalex.org/W3149683617', 'https://openalex.org/W3158710982', 'https://openalex.org/W3200928851', 'https://openalex.org/W3202498144', 'https://openalex.org/W4231225162', 'https://openalex.org/W4232480034', 'https://openalex.org/W4283366978', 'https://openalex.org/W4283370293', 'https://openalex.org/W4303415620', 'https://openalex.org/W4321601601', 'https://openalex.org/W4362634928', 'https://openalex.org/W4380318313', 'https://openalex.org/W4386839396', 'https://openalex.org/W4386995796', 'https://openalex.org/W613321901', 'https://openalex.org/W622103165'], 'related_works': ['https://openalex.org/W4387653525', 'https://openalex.org/W4386995796', 'https://openalex.org/W4386835200', 'https://openalex.org/W4241527569', 'https://openalex.org/W385972301', 'https://openalex.org/W2898533975', 'https://openalex.org/W2745323733', 'https://openalex.org/W2638608834', 'https://openalex.org/W2088411976', 'https://openalex.org/W2066370402'], 'abstract_inverted_index': {'One': [0], 'of': [1, 4, 34, 51, 92, 103, 114, 121, 130, 148, 162, 177, 180, 189, 201, 226, 237, 242], 'the': [2, 17, 39, 49, 68, 101, 104, 112, 119, 122, 146, 160, 163, 184, 196, 202, 224], 'uses': [3], 'Helmholtz': [5, 53, 76, 95, 135], 'resonators': [6, 77, 96, 136], 'is': [7, 23], 'as': [8, 38, 204], 'sound': [9, 216], 'absorbers': [10, 217], 'for': [11, 16, 159, 214, 218], 'room': [12, 219], 'acoustic': [13, 243], 'applications,': [14], 'especially': [15], 'low': [18], 'frequency': [19, 28], 'range.': [20], 'Their': [21], 'efficiency': [22], 'centered': [24], 'around': [25], 'their': [26, 35], 'resonance': [27, 70, 80, 90, 164], 'which': [29], 'mainly': [30], 'depends': [31], 'on': [32, 48, 56], 'elements': [33], 'geometry': [36], 'such': [37], 'resonator': [40, 54], 'volume': [41], 'and': [42, 84, 118, 153, 167], 'neck': [43, 191], 'dimensions.': [44], 'Incorporating': [45], 'additional': [46, 87, 149, 181, 238], 'necks': [47, 203], 'body': [50], 'a': [52, 172, 227], '(depending': [55], 'whether': [57], 'they': [58], 'are': [59, 82, 97, 125, 143], 'open': [60], 'or': [61], 'closed)': [62], 'has': [63], 'been': [64], 'found': [65], 'to': [66, 78, 195, 223], 'alter': [67], 'resulting': [69], 'frequency.': [71], 'For': [72], 'this': [73, 131, 230], 'study,': [74], 'tunable': [75, 215, 239], 'multiple': [79, 138], 'frequencies,': [81], 'proposed': [83, 209], 'investigated': [85], 'utilizing': [86], 'necks.': [88], 'The': [89, 128, 208], 'frequencies': [91, 142], 'various': [93], 'multi-neck': [94], 'first': [98], 'modeled': [99], 'with': [100, 111, 137, 145], 'use': [102, 113, 147], 'finite': [105], 'element': [106], 'method': [107], '(FEM),': [108], 'then': [109], 'calculated': [110], 'an': [115], 'analytical': [116, 154], 'approach': [117, 169, 210, 231], 'results': [120, 129, 170], 'two': [123], 'approaches': [124], 'finally': [126], 'compared.': [127], 'study': [132], 'show': [133, 171], 'that': [134], 'resonances': [139, 241], 'at': [140], 'desired': [141], 'achievable': [144], 'necks,': [150, 182], 'while': [151, 183], 'FEM': [152, 168], 'methods': [155], 'can': [156, 211, 232], 'be': [157, 212, 233], 'used': [158], 'estimation': [161], 'frequencies.': [165], 'Analytical': [166], 'good': [173], 'agreement': [174], 'in': [175, 187, 198, 235], 'cases': [176, 188, 236], 'small': [178], 'number': [179], 'increasing': [185], 'differences': [186], 'higher': [190], 'additions,': [192], 'were': [193], 'attributed': [194], 'change': [197], 'effective': [199], 'length': [200], 'demonstrated': [205], 'by': [206], 'FEM.': [207], 'useful': [213], 'acoustics': [220], 'applications': [221], 'according': [222], 'needs': [225], 'space.': [228], 'Also,': [229], 'applied': [234], 'air': [240], 'instruments': [244], '(e.g.,': [245], 'string': [246], 'instruments).': [247]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W4387653525', 'counts_by_year': [{'year': 2024, 'cited_by_count': 2}], 'updated_date': '2025-01-04T17:30:10.114895', 'created_date': '2023-10-16'}