Please use this identifier to cite or link to this item:

Full metadata record
DC FieldValueLanguage
dc.contributor.authorPimenta, Sarapor
dc.contributor.authorCardoso, Susanapor
dc.contributor.authorCastanheira, Elisabete M. S.por
dc.contributor.authorMinas, Graçapor
dc.description.abstractThe implementation of a low-cost, miniaturized and minimal invasive microsystem for spectroscopy signals extraction, especially diffuse reflectance and fluorescence, will represent a valuable tool in the detection of gastrointestinal dysplasia. As a progress towards this goal, it is presented the design, optimization, fabrication and characterization (through optical transmittance, selectivity, SEM and profilometry) of 16 MgO/TiO 2 and SiO 2 /TiO 2 based high selective narrow bandpass optical filters to be included in the microsystem. Their performance was successfully evaluated in the extraction of diffuse reflectance and fluorescence signals from tissue phantoms. The obtained results prove their feasibility to correctly extract those spectroscopic signals. Moreover, it was also proved the viability of using a silicon photodiode fabricated in a standard 0.7 µm CMOS process and with an area of 100 × 100 µm2, as photodetector to accurately extract a spectroscopic signal.por
dc.description.sponsorshipThis work is funded by FEDER funds through the “Eixo I do Programa Operacional Fatores de Competitividade” (POFC) QREN, project reference COMPETE: FCOMP-01-0124-FEDER-020241 and by FCT - Fundação para a Ciência e a Tecnologia, project reference PTDC/EBB-EBI/120334/2010. The authors thank to the PEst-C/FIS/UI0607/2013 for the use of spectroscopic equipment. The authors also thank to Vânia Pinto, from CMEMS-UMinho, for the support during the profilometry measurements; and to Adelaide Miranda and Pieter De Beule, from INL (Braga), for the ellipsometry measurements. Sara Pimenta thanks the FCT for the SFRH/BD/87605/2012 PhD grant.por
dc.publisherNova Science Publishers, Inc.por
dc.titleAdvances towards a miniaturized optical system for gastrointestinal cancer detection using diffuse reflectance and fluorescence spectroscopiespor
sdum.bookTitleGastrointestinal Cancers: Prevention, Detection and Treatmentpor
Appears in Collections:CDF - FAMO - Capítulos de livros/Book chapters

Files in This Item:
File Description SizeFormat 
Advances_Microsystem for GI Cancer detection_revised.pdf
  Restricted access
1,19 MBAdobe PDFView/Open

Partilhe no FacebookPartilhe no TwitterPartilhe no DeliciousPartilhe no LinkedInPartilhe no DiggAdicionar ao Google BookmarksPartilhe no MySpacePartilhe no Orkut
Exporte no formato BibTex mendeley Exporte no formato Endnote Adicione ao seu ORCID