{"id":"https://openalex.org/W2048103671","doi":"https://doi.org/10.1109/nems.2014.6908882","title":"A capacitive micromachined ultrasonic transducer (CMUT) array with nickel membranes in a convex shape","display_name":"A capacitive micromachined ultrasonic transducer (CMUT) array with nickel membranes in a convex shape","publication_year":2014,"publication_date":"2014-04-01","ids":{"openalex":"https://openalex.org/W2048103671","doi":"https://doi.org/10.1109/nems.2014.6908882","mag":"2048103671"},"language":"en","primary_location":{"id":"doi:10.1109/nems.2014.6908882","is_oa":false,"landing_page_url":"https://doi.org/10.1109/nems.2014.6908882","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The 9th IEEE International Conference on Nano/Micro Engineered and Molecular Systems (NEMS)","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5113696852","display_name":"Po\u2010Fat Chong","orcid":null},"institutions":[{"id":"https://openalex.org/I14243506","display_name":"Hong Kong Polytechnic University","ror":"https://ror.org/0030zas98","country_code":"HK","type":"education","lineage":["https://openalex.org/I14243506"]}],"countries":["HK"],"is_corresponding":false,"raw_author_name":"Po-Fat Chong","raw_affiliation_strings":["Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong, CHINA","Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong, China.#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong, CHINA","institution_ids":["https://openalex.org/I14243506"]},{"raw_affiliation_string":"Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong, China.#TAB#","institution_ids":["https://openalex.org/I14243506"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5085249984","display_name":"Xiaomei Shi","orcid":"https://orcid.org/0000-0002-7589-1114"},"institutions":[{"id":"https://openalex.org/I14243506","display_name":"Hong Kong Polytechnic University","ror":"https://ror.org/0030zas98","country_code":"HK","type":"education","lineage":["https://openalex.org/I14243506"]}],"countries":["HK"],"is_corresponding":false,"raw_author_name":"Xiaomei Shi","raw_affiliation_strings":["Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong, CHINA","Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong, China.#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong, CHINA","institution_ids":["https://openalex.org/I14243506"]},{"raw_affiliation_string":"Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong, China.#TAB#","institution_ids":["https://openalex.org/I14243506"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5012706447","display_name":"Ching\u2010Hsiang Cheng","orcid":"https://orcid.org/0000-0003-2424-6219"},"institutions":[{"id":"https://openalex.org/I14243506","display_name":"Hong Kong Polytechnic University","ror":"https://ror.org/0030zas98","country_code":"HK","type":"education","lineage":["https://openalex.org/I14243506"]}],"countries":["HK"],"is_corresponding":false,"raw_author_name":"Ching-Hsiang Cheng","raw_affiliation_strings":["Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong, CHINA","Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong, China.#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong, CHINA","institution_ids":["https://openalex.org/I14243506"]},{"raw_affiliation_string":"Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong, China.#TAB#","institution_ids":["https://openalex.org/I14243506"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.12879427,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":94},"biblio":{"volume":null,"issue":null,"first_page":"596","last_page":"599"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10662","display_name":"Ultrasonics and Acoustic Wave Propagation","score":0.9997000098228455,"subfield":{"id":"https://openalex.org/subfields/2211","display_name":"Mechanics of Materials"},"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/T10662","display_name":"Ultrasonics and Acoustic Wave Propagation","score":0.9997000098228455,"subfield":{"id":"https://openalex.org/subfields/2211","display_name":"Mechanics of Materials"},"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/T10727","display_name":"Ultrasound Imaging and Elastography","score":0.9997000098228455,"subfield":{"id":"https://openalex.org/subfields/2741","display_name":"Radiology, Nuclear Medicine and Imaging"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10338","display_name":"Advanced Sensor and Energy Harvesting Materials","score":0.9973000288009644,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/capacitive-micromachined-ultrasonic-transducers","display_name":"Capacitive micromachined ultrasonic transducers","score":0.8808602094650269},{"id":"https://openalex.org/keywords/photoresist","display_name":"Photoresist","score":0.832599937915802},{"id":"https://openalex.org/keywords/materials-science","display_name":"Materials science","score":0.8012288808822632},{"id":"https://openalex.org/keywords/electroplating","display_name":"Electroplating","score":0.7647367119789124},{"id":"https://openalex.org/keywords/ultrasonic-sensor","display_name":"Ultrasonic sensor","score":0.6966482400894165},{"id":"https://openalex.org/keywords/surface-micromachining","display_name":"Surface micromachining","score":0.6006733775138855},{"id":"https://openalex.org/keywords/nickel","display_name":"Nickel","score":0.5955129861831665},{"id":"https://openalex.org/keywords/membrane","display_name":"Membrane","score":0.5258097052574158},{"id":"https://openalex.org/keywords/capacitive-sensing","display_name":"Capacitive sensing","score":0.5105639696121216},{"id":"https://openalex.org/keywords/transducer","display_name":"Transducer","score":0.4926601052284241},{"id":"https://openalex.org/keywords/layer","display_name":"Layer (electronics)","score":0.4554126560688019},{"id":"https://openalex.org/keywords/capacitance","display_name":"Capacitance","score":0.4420095682144165},{"id":"https://openalex.org/keywords/optoelectronics","display_name":"Optoelectronics","score":0.4383012354373932},{"id":"https://openalex.org/keywords/composite-material","display_name":"Composite material","score":0.3227936327457428},{"id":"https://openalex.org/keywords/acoustics","display_name":"Acoustics","score":0.2976120710372925},{"id":"https://openalex.org/keywords/fabrication","display_name":"Fabrication","score":0.21616744995117188},{"id":"https://openalex.org/keywords/electrode","display_name":"Electrode","score":0.16042733192443848},{"id":"https://openalex.org/keywords/piezoelectricity","display_name":"Piezoelectricity","score":0.15624970197677612},{"id":"https://openalex.org/keywords/electrical-engineering","display_name":"Electrical engineering","score":0.14724856615066528},{"id":"https://openalex.org/keywords/metallurgy","display_name":"Metallurgy","score":0.1296958029270172},{"id":"https://openalex.org/keywords/chemistry","display_name":"Chemistry","score":0.06329727172851562}],"concepts":[{"id":"https://openalex.org/C58772458","wikidata":"https://www.wikidata.org/wiki/Q5034480","display_name":"Capacitive micromachined ultrasonic transducers","level":3,"score":0.8808602094650269},{"id":"https://openalex.org/C134406635","wikidata":"https://www.wikidata.org/wiki/Q1439684","display_name":"Photoresist","level":3,"score":0.832599937915802},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.8012288808822632},{"id":"https://openalex.org/C51807945","wikidata":"https://www.wikidata.org/wiki/Q3503392","display_name":"Electroplating","level":3,"score":0.7647367119789124},{"id":"https://openalex.org/C81288441","wikidata":"https://www.wikidata.org/wiki/Q20736125","display_name":"Ultrasonic sensor","level":2,"score":0.6966482400894165},{"id":"https://openalex.org/C145667562","wikidata":"https://www.wikidata.org/wiki/Q7646003","display_name":"Surface micromachining","level":4,"score":0.6006733775138855},{"id":"https://openalex.org/C504270822","wikidata":"https://www.wikidata.org/wiki/Q744","display_name":"Nickel","level":2,"score":0.5955129861831665},{"id":"https://openalex.org/C41625074","wikidata":"https://www.wikidata.org/wiki/Q176088","display_name":"Membrane","level":2,"score":0.5258097052574158},{"id":"https://openalex.org/C206755178","wikidata":"https://www.wikidata.org/wiki/Q1131271","display_name":"Capacitive sensing","level":2,"score":0.5105639696121216},{"id":"https://openalex.org/C56318395","wikidata":"https://www.wikidata.org/wiki/Q215928","display_name":"Transducer","level":2,"score":0.4926601052284241},{"id":"https://openalex.org/C2779227376","wikidata":"https://www.wikidata.org/wiki/Q6505497","display_name":"Layer (electronics)","level":2,"score":0.4554126560688019},{"id":"https://openalex.org/C30066665","wikidata":"https://www.wikidata.org/wiki/Q164399","display_name":"Capacitance","level":3,"score":0.4420095682144165},{"id":"https://openalex.org/C49040817","wikidata":"https://www.wikidata.org/wiki/Q193091","display_name":"Optoelectronics","level":1,"score":0.4383012354373932},{"id":"https://openalex.org/C159985019","wikidata":"https://www.wikidata.org/wiki/Q181790","display_name":"Composite material","level":1,"score":0.3227936327457428},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.2976120710372925},{"id":"https://openalex.org/C136525101","wikidata":"https://www.wikidata.org/wiki/Q5428139","display_name":"Fabrication","level":3,"score":0.21616744995117188},{"id":"https://openalex.org/C17525397","wikidata":"https://www.wikidata.org/wiki/Q176140","display_name":"Electrode","level":2,"score":0.16042733192443848},{"id":"https://openalex.org/C100082104","wikidata":"https://www.wikidata.org/wiki/Q183759","display_name":"Piezoelectricity","level":2,"score":0.15624970197677612},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.14724856615066528},{"id":"https://openalex.org/C191897082","wikidata":"https://www.wikidata.org/wiki/Q11467","display_name":"Metallurgy","level":1,"score":0.1296958029270172},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.06329727172851562},{"id":"https://openalex.org/C55493867","wikidata":"https://www.wikidata.org/wiki/Q7094","display_name":"Biochemistry","level":1,"score":0.0},{"id":"https://openalex.org/C147789679","wikidata":"https://www.wikidata.org/wiki/Q11372","display_name":"Physical chemistry","level":1,"score":0.0},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.0},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.0},{"id":"https://openalex.org/C204787440","wikidata":"https://www.wikidata.org/wiki/Q188504","display_name":"Alternative medicine","level":2,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C142724271","wikidata":"https://www.wikidata.org/wiki/Q7208","display_name":"Pathology","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/nems.2014.6908882","is_oa":false,"landing_page_url":"https://doi.org/10.1109/nems.2014.6908882","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The 9th IEEE International Conference on Nano/Micro Engineered and Molecular Systems (NEMS)","raw_type":"proceedings-article"},{"id":"pmh:oai:ira.lib.polyu.edu.hk:10397/31765","is_oa":false,"landing_page_url":"http://hdl.handle.net/10397/31765","pdf_url":null,"source":{"id":"https://openalex.org/S4306400205","display_name":"PolyU Institutional Research Archive (Hong Kong Polytechnic University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I14243506","host_organization_name":"Hong Kong Polytechnic University","host_organization_lineage":["https://openalex.org/I14243506"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Conference Paper"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.5600000023841858,"id":"https://metadata.un.org/sdg/7","display_name":"Affordable and clean energy"}],"awards":[],"funders":[{"id":"https://openalex.org/F4320322598","display_name":"Hong Kong Polytechnic University","ror":"https://ror.org/0030zas98"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":11,"referenced_works":["https://openalex.org/W1528806418","https://openalex.org/W1533058090","https://openalex.org/W1963633594","https://openalex.org/W2007399899","https://openalex.org/W2032204880","https://openalex.org/W2078318663","https://openalex.org/W2110160823","https://openalex.org/W2122871810","https://openalex.org/W2150266890","https://openalex.org/W2160644863","https://openalex.org/W6670368913"],"related_works":["https://openalex.org/W2001873846","https://openalex.org/W1841820351","https://openalex.org/W2142584595","https://openalex.org/W2116016927","https://openalex.org/W2170052701","https://openalex.org/W2366206680","https://openalex.org/W2112919040","https://openalex.org/W2056328529","https://openalex.org/W2084545039","https://openalex.org/W2969556451"],"abstract_inverted_index":{"This":[0],"paper":[1],"reports":[2],"an":[3,166],"improved":[4],"method":[5],"for":[6,144],"fabricating":[7],"CMUT":[8,18],"array":[9,19],"using":[10,20,165],"nickel":[11,21,43,56,86,135],"electroplating":[12,44,57],"over":[13,58],"reflowed":[14,59,73],"photoresist.":[15],"Previously,":[16],"a":[17,100,127,158],"on":[22,117,136],"glass":[23,137],"process":[24,138],"which":[25,139],"is":[26,31,68],"used":[27],"Doppler":[28],"velocity":[29],"sensor":[30],"reported":[32,35,52,133,155],"[1].":[33],"The":[34,88],"device":[36,90,132,156],"use":[37,55],"TI/Cu":[38],"as":[39],"sacrificial":[40,75],"layer":[41,76],"and":[42,65],"to":[45,61,121],"form":[46,62],"the":[47,50,63,66,72,80,85,93,97,114,118,123,130,148,153],"membrane.":[48,87],"In":[49],"newly":[51,154],"CMUT,":[53],"we":[54],"photoresist":[60,74],"membrane,":[64],"cavity":[67],"formed":[69],"by":[70,164],"removing":[71],"with":[77,134],"acetone":[78],"via":[79],"pre-formed":[81],"released":[82],"hole":[83],"through":[84],"new":[89],"fabricated":[91],"showed":[92],"advantage":[94],"of":[95,105,152],"having":[96],"membrane":[98,111,119],"in":[99,103],"convex":[101,110],"shape":[102],"terms":[104],"higher":[106],"sensitivity":[107],"[2].":[108],"A":[109],"can":[112],"reduce":[113],"gap":[115],"distance":[116],"edge":[120],"increase":[122],"effective":[124],"capacitance.":[125],"As":[126],"result,":[128],"comparing":[129],"particular":[131],"operates":[140],"at":[141,161],"180":[142],"kHz":[143],"low":[145],"frequency":[146,160],"application,":[147],"preliminary":[149],"experimental":[150],"result":[151],"shows":[157],"resonant":[159],"around":[162],"7.7MHz":[163],"impedance":[167],"analyzer.":[168]},"counts_by_year":[{"year":2018,"cited_by_count":1}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}
