Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/60480
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Campo DC | Valor | Idioma |
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dc.contributor.author | Costa, Adriana Clotilde | por |
dc.contributor.author | Pimenta, Sara | por |
dc.contributor.author | Ribeiro, J. F. | por |
dc.contributor.author | Silva, Manuel Fernando Ribeiro | por |
dc.contributor.author | Wolffenbuttel, Reinoud F. | por |
dc.contributor.author | Dong, Tao | por |
dc.contributor.author | Yang, Zhaochu | por |
dc.contributor.author | Correia, José H. | por |
dc.date.accessioned | 2019-06-04T16:42:28Z | - |
dc.date.available | 2019-06-04T16:42:28Z | - |
dc.date.issued | 2019-03-01 | - |
dc.identifier.issn | 1424-8220 | - |
dc.identifier.uri | https://hdl.handle.net/1822/60480 | - |
dc.description.abstract | Minimally invasive medical devices can greatly benefit from Narrow Band Imaging (NBI) diagnostic capabilities, as different wavelengths allow penetration of distinct layers of the gastrointestinal tract mucosa, improving diagnostic accuracy and targeting different pathologies. An important performance parameter is the light intensity at a given power consumption of the medical device. A method to increase the illumination intensity in the NBI diagnostic technique was developed and applied to minimally invasive medical devices (e.g., endoscopic capsules), without increasing the size and power consumption of such instruments. Endoscopic capsules are generally equipped with light-emitting diodes (LEDs) operating in the RGB (red, green, and blue) visible light spectrum. A polydimethylsiloxane (PDMS) µ-lens was designed for a maximum light intensity at the target area of interest when placed on top of the LEDs. The PDMS µ-lens was fabricated using a low-cost hanging droplet method. Experiments reveal an increased illumination intensity by a factor of 1.21 for both the blue and green LEDs and 1.18 for the red LED. These promising results can increase the resolution of NBI in endoscopic capsules, which can contribute to early gastric lesions diagnosis. | por |
dc.description.sponsorship | This work is supported by the Innovation Team for Chongqing Higher Education Construction Plan on “Smart Micro/Nano-Systems Technology and Applications” with project number CXTDX201601025. This work is supported by FCT with the project CMEMS, reference UID/EEA/04436/2019 and by the project OpticalBrain, reference PTDC/CTM-REF/28406/2017, by FEDER funds through the COMPETE 2020—Programa Operacional Competitividade e Internacionalização (POCI). Finally, this work is also supported by FCT with the project OCT-RAMAN, PTDC/FIS-OTI/28296/2017 with the operation code NORTE-01-0145-FEDER-028296. | por |
dc.language.iso | eng | por |
dc.publisher | Multidisciplinary Digital Publishing Institute | por |
dc.relation | UID/EEA/04436/2019 | por |
dc.relation | PTDC/CTM-REF/28406/2017 | por |
dc.relation | PTDC/FIS-OTI/28296/2017 | por |
dc.rights | openAccess | por |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | por |
dc.subject | Narrow Band Imaging (NBI) | por |
dc.subject | Polydimethylsiloxane (PDMS) mu-lens | por |
dc.subject | minimally invasive medical devices | por |
dc.subject | Polydimethylsiloxane (PDMS) µ-lens | por |
dc.title | PDMS microlenses for focusing light in narrow band imaging diagnostics | por |
dc.type | article | por |
dc.peerreviewed | yes | por |
oaire.citationIssue | 5 | por |
oaire.citationVolume | 19 | por |
dc.date.updated | 2019-04-11T11:08:38Z | - |
dc.identifier.doi | 10.3390/s19051057 | por |
dc.identifier.pmid | 30832271 | por |
dc.description.publicationversion | info:eu-repo/semantics/publishedVersion | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Sensors | por |
Aparece nas coleções: | DEI - Artigos em revistas internacionais |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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sensors-19-01057-v2.pdf | 2,22 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons