Publicação
PVDF piezoelectric flow sensor for velocity measurements aiming malaria diagnostics: A preliminary approach
| Resumo: | Malaria is a parasitic disease widely spread in the tropical and subtropical regions of the globe, commonly associated with underdeveloped countries with poor healthcare conditions. Appropriate diagnosis and treatment are essential for reducing malaria mortality. The measurement of the blood velocity in capillary vessels can be used as a principle for malaria diagnostics. Therefore, this work focuses on developing the actuation, acquisition and readout electronics systems of a piezoelectric acoustic transducer for measuring the velocity of a liquid, aiming malaria diagnostics. The measurement is based on the phase differences between the emitted and the received acoustic signals that interact with the fluid, driven by a voltage-controlled oscillator that generates an 8.5 MHz acoustic wave. The material of the piezoelectric transducer is based on the polyvinylidene fluoride (PVDF) polymer placed in a water chamber. The system was tested in water with different flow conditions, from rest up to 30 ml/min. It was compared the effect of two different thin-film PVDF transducers, with 28 and 110 μm thickness, and it was observed that both allowed to detected flows above 5 ml/min, with 84% and 77% linearity, respectively. Therefore, the developed prototype system of the acoustic transducer for measuring the velocity of a liquid sample may be reliable, since it detects velocity variations within the typical range of blood flow velocities in capillary vessels. Future work is essential to improve the sensor overall characteristics to make it a reliable tool for malaria diagnostics. |
|---|---|
| Autores principais: | Sanches De Baêna, M. |
| Outros Autores: | Minas, Graça; Catarino, Susana Oliveira |
| Assunto: | Ciências Médicas::Biotecnologia Médica Engenharia e Tecnologia::Engenharia Médica |
| Ano: | 2019 |
| País: | Portugal |
| Tipo de documento: | comunicação em conferência |
| Tipo de acesso: | acesso restrito |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| _version_ | 1867439852992069632 |
|---|---|
| author | Sanches De Baêna, M. |
| author2 | Minas, Graça Catarino, Susana Oliveira |
| author2_role | author author |
| author_facet | Sanches De Baêna, M. Minas, Graça Catarino, Susana Oliveira |
| author_role | author |
| contributor_name_str_mv | RepositóriUM - Universidade do Minho |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Sanches De Baêna, M.\"},{\"Person.name\":\"Minas, Graça\"},{\"Person.name\":\"Catarino, Susana Oliveira\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | RepositóriUM - Universidade do Minho |
| datacite.creators.creator.creatorName.fl_str_mv | Sanches De Baêna, M. Minas, Graça Catarino, Susana Oliveira |
| datacite.date.Accepted.fl_str_mv | 2019-04-15T00:00:00Z |
| datacite.date.embargoed.fl_str_mv | 10000-01-01T00:00:00Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_16ec |
| datacite.subjects.subject.fl_str_mv | Ciências Médicas::Biotecnologia Médica Engenharia e Tecnologia::Engenharia Médica |
| datacite.titles.title.fl_str_mv | PVDF piezoelectric flow sensor for velocity measurements aiming malaria diagnostics: A preliminary approach |
| dc.contributor.none.fl_str_mv | RepositóriUM - Universidade do Minho |
| dc.creator.none.fl_str_mv | Sanches De Baêna, M. Minas, Graça Catarino, Susana Oliveira |
| dc.date.Accepted.fl_str_mv | 2019-04-15T00:00:00Z |
| dc.date.embargoed.fl_str_mv | 10000-01-01T00:00:00Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | https://hdl.handle.net/1822/60927 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | Institute of Electrical and Electronics Engineers Inc. |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_16ec |
| dc.subject.none.fl_str_mv | Ciências Médicas::Biotecnologia Médica Engenharia e Tecnologia::Engenharia Médica |
| dc.title.fl_str_mv | PVDF piezoelectric flow sensor for velocity measurements aiming malaria diagnostics: A preliminary approach |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_5794 |
| description | Malaria is a parasitic disease widely spread in the tropical and subtropical regions of the globe, commonly associated with underdeveloped countries with poor healthcare conditions. Appropriate diagnosis and treatment are essential for reducing malaria mortality. The measurement of the blood velocity in capillary vessels can be used as a principle for malaria diagnostics. Therefore, this work focuses on developing the actuation, acquisition and readout electronics systems of a piezoelectric acoustic transducer for measuring the velocity of a liquid, aiming malaria diagnostics. The measurement is based on the phase differences between the emitted and the received acoustic signals that interact with the fluid, driven by a voltage-controlled oscillator that generates an 8.5 MHz acoustic wave. The material of the piezoelectric transducer is based on the polyvinylidene fluoride (PVDF) polymer placed in a water chamber. The system was tested in water with different flow conditions, from rest up to 30 ml/min. It was compared the effect of two different thin-film PVDF transducers, with 28 and 110 μm thickness, and it was observed that both allowed to detected flows above 5 ml/min, with 84% and 77% linearity, respectively. Therefore, the developed prototype system of the acoustic transducer for measuring the velocity of a liquid sample may be reliable, since it detects velocity variations within the typical range of blood flow velocities in capillary vessels. Future work is essential to improve the sensor overall characteristics to make it a reliable tool for malaria diagnostics. |
| dirty | 0 |
| eu_rights_str_mv | restrictedAccess |
| format | conferencePaper |
| fulltext.url.fl_str_mv | https://repositorium.uminho.pt/bitstreams/e76ce680-5397-4f46-b258-985bc8aeb1db/download |
| id | rum_af940fa22112dda9011af0a758a830ad |
| identifier.url.fl_str_mv | https://hdl.handle.net/1822/60927 |
| instacron_str | repositorium |
| institution | Universidade do Minho |
| instname_str | Universidade do Minho |
| language | eng |
| network_acronym_str | rum |
| network_name_str | RepositóriUM - Universidade do Minho |
| oai_identifier_str | oai:repositorium.uminho.pt:1822/60927 |
| organization_str_mv | urn:organizationAcronym:repositorium |
| person_str_mv | Sanches De Baêna, M. Minas, Graça Catarino, Susana Oliveira |
| publishDate | 2019 |
| publisher.none.fl_str_mv | Institute of Electrical and Electronics Engineers Inc. |
| reponame_str | RepositóriUM - Universidade do Minho |
| repository_id_str | urn:repositoryAcronym:rum |
| service_str_mv | urn:repositoryAcronym:rum |
| spelling | engInstitute of Electrical and Electronics Engineers Inc.porMalaria is a parasitic disease widely spread in the tropical and subtropical regions of the globe, commonly associated with underdeveloped countries with poor healthcare conditions. Appropriate diagnosis and treatment are essential for reducing malaria mortality. The measurement of the blood velocity in capillary vessels can be used as a principle for malaria diagnostics. Therefore, this work focuses on developing the actuation, acquisition and readout electronics systems of a piezoelectric acoustic transducer for measuring the velocity of a liquid, aiming malaria diagnostics. The measurement is based on the phase differences between the emitted and the received acoustic signals that interact with the fluid, driven by a voltage-controlled oscillator that generates an 8.5 MHz acoustic wave. The material of the piezoelectric transducer is based on the polyvinylidene fluoride (PVDF) polymer placed in a water chamber. The system was tested in water with different flow conditions, from rest up to 30 ml/min. It was compared the effect of two different thin-film PVDF transducers, with 28 and 110 μm thickness, and it was observed that both allowed to detected flows above 5 ml/min, with 84% and 77% linearity, respectively. Therefore, the developed prototype system of the acoustic transducer for measuring the velocity of a liquid sample may be reliable, since it detects velocity variations within the typical range of blood flow velocities in capillary vessels. Future work is essential to improve the sensor overall characteristics to make it a reliable tool for malaria diagnostics.application/pdfporPVDF piezoelectric flow sensor for velocity measurements aiming malaria diagnostics: A preliminary approachSanches De Baêna, M.Minas, GraçaCatarino, Susana OliveiraHostingInstitutionOrganizationalRepositóriUM - Universidade do Minhoe-mailmailto:repositorium@usdb.uminho.ptrepositorium@usdb.uminho.ptCITATIONde Baêna, M. S., Minas, G., & Catarino, S. O. (2019, February). PVDF piezoelectric flow sensor for velocity measurements aiming malaria diagnostics: a preliminary approach. In 2019 IEEE 6th Portuguese Meeting on Bioengineering (ENBENG) (pp. 1-4). IEEE.ISBNIsPartOf978-1-5386-8507-5DOIIsPartOf10.1109/ENBENG.2019.8692515EISBNIsPartOf978-1-5386-8506-82019-04-152019-07-18T14:02:21Z10000-01-01T00:00:00Z2019-04-15T00:00:00ZHandlehttps://hdl.handle.net/1822/60927http://purl.org/coar/access_right/c_16ecrestricted accesshttp://www.oecd.org/science/inno/38235147.pdfFields of Science and Technology (FOS)Ciências Médicas::Biotecnologia Médicahttp://www.oecd.org/science/inno/38235147.pdfFields of Science and Technology (FOS)Engenharia e Tecnologia::Engenharia Médica3174187 bytesother research producthttp://purl.org/coar/resource_type/c_5794conference paperhttp://purl.org/coar/access_right/c_f1cfapplication/pdffulltexthttps://repositorium.uminho.pt/bitstreams/e76ce680-5397-4f46-b258-985bc8aeb1db/download |
| spellingShingle | PVDF piezoelectric flow sensor for velocity measurements aiming malaria diagnostics: A preliminary approach Sanches De Baêna, M. Ciências Médicas::Biotecnologia Médica Engenharia e Tecnologia::Engenharia Médica |
| status | SINGLETON |
| subject.other.fl_str_mv | Ciências Médicas::Biotecnologia Médica Engenharia e Tecnologia::Engenharia Médica |
| title | PVDF piezoelectric flow sensor for velocity measurements aiming malaria diagnostics: A preliminary approach |
| title_full | PVDF piezoelectric flow sensor for velocity measurements aiming malaria diagnostics: A preliminary approach |
| title_fullStr | PVDF piezoelectric flow sensor for velocity measurements aiming malaria diagnostics: A preliminary approach |
| title_full_unstemmed | PVDF piezoelectric flow sensor for velocity measurements aiming malaria diagnostics: A preliminary approach |
| title_short | PVDF piezoelectric flow sensor for velocity measurements aiming malaria diagnostics: A preliminary approach |
| title_sort | PVDF piezoelectric flow sensor for velocity measurements aiming malaria diagnostics: A preliminary approach |
| topic | Ciências Médicas::Biotecnologia Médica Engenharia e Tecnologia::Engenharia Médica |
| topic_facet | Ciências Médicas::Biotecnologia Médica Engenharia e Tecnologia::Engenharia Médica |
| url | https://hdl.handle.net/1822/60927 |
| visible | 1 |