John Paul Lima

John Paul Lima
Pontifícia Universidade Católica de São Paulo (PUC-SP) | PUCSP · Biomedical Engineering

PhD

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8
Publications
4,948
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78
Citations
Citations since 2017
0 Research Items
31 Citations
201720182019202020212022202302468
201720182019202020212022202302468
201720182019202020212022202302468
201720182019202020212022202302468

Publications

Publications (8)
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A publicação resgata a trajetória do Laboratório Integrado de Analise Acústica e Cognição (LIAAC) nos últimos anos em termos das descrições da fala e voz em ambiente clínico, gradativamente caminhando para a incorporação e o desenvolvimento de recursos tecnológicos da fala, que representam uma de nossas linhas de atuação. Tal trajetória sustenta-se...
Article
This work deals with MEH-PPV thin films to be used as gamma radiation sensors. The polymer thin films with two different thicknesses (30 and 100 nm) were irradiated at room temperature with different gamma radiation doses (up to 25 kGy). Optical properties of the material were investigated with FTIR and UV-Vis absorption spectroscopy. Results show...
Article
This work shows a comparison between electrical resistance and capacitance responses of ethanol and five different fragrances using an electronic nose based on conducting polymers. Gas chromatography—mass spectrometry (GC-MS) measurements were performed to evaluate the main differences between the analytes. It is shown that although the fragrances...
Article
This work deals with the electrical and optical response of poly (o-methoxyaniline) (POMA) thin films exposed to nitrogen and nitrogen with methanol. A low cost apparatus was developed for the optical assessment of the presence of methanol in an ambient. It is shown that thick POMA films exhibits a wide optical absorption variation when in presence...
Article
The influence of deposition parameters, namely polymer concentration and pH of the deposition solution, cleaning, and drying steps on the morphology and electrical characteristics of polyaniline and sulfonated polystyrene (PANI/PSS) nanostructured films deposited by the self-assembly technique is evaluated by UV–Vis spectroscopy, optical and atomic...
Article
Artificial neural networks (ANN) were used to simulate the absorption spectra of PANI/PVS films deposited by the layer-bylayer (LBL) technique with different number of bilayers and doping levels. The PAni/PVS films are used to enhance electrical and optical performance of polymeric electroluminescent devices. In this work one hidden-layer Multilaye...
Article
We have developed a novel programmable, low cost, spin coater to be used for applications where flat substrates are coated with an uniform thin layer of a desirable material. The equipment is built with dc brushless motor present in most of the hard disk drivers (HDDs). The system offers manual control, wide speed range (from 0 to 10,000 rpm), spin...
Article
Morphological study of conducting polymer thin films obtained by spin coating is reported. Poly(o-methoxyaniline) films were deposited onto glass substrates and analyzed by profilometry and atomic force microscopy (AFM). It is shown that final thickness is correlated by a power law with spin speed with a solution concentration varying coefficient a...

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