Browsing by Subject "Sensors químics"
Now showing items 1-20 of 31
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A method to build unique calibration models for batches of chemical sensor arrays
(2016)
Conference report
Open Access -
A practical method to estimate the resolving power of a chemical sensor array: application to feature selection
(2018-06-12)
Article
Open AccessA methodology to calculate analytical figures of merit is not well established for detection systems that are based on sensor arrays with low sensor selectivity. In this work, we present a practical approach to estimate ... -
Acceleration and drift reduction of MOX gas sensors using active sigma-delta controls based on dielectric excitation
(2022-08-15)
Article
Open AccessThe objective of this paper is to apply a closed-loop control based on dielectric excitation to MOX gas sensors in order to improve their response time. The control implements a feedback loop in which temperature modulations ... -
Active control of the surface potential of nanostructured layers
(2016-01-21)
Article
Open AccessThe objective of this letter is to show the first results obtained with a control designed to keep the average surface potential of a nanostructured layerconstant. This condition is equivalent to keeping constant the ... -
Analysis of the dynamics of an active control of the surface potential in metal oxide gas sensors
(Pergamon Press, 2018-05-08)
Article
Open Access -
Application of an array of metal-oxide semiconductor gas sensors in an assistant personal robot for early gas leak detection
(Multidisciplinary Digital Publishing Institute (MDPI), 2019-04-26)
Article
Open Access -
Calibration transfer and drift counteraction in chemical sensor arrays using direct standardization
(2016-05-18)
Article
Open AccessInherent variability of chemical sensors makes it necessary to calibrate chemical detection systems individually. This shortcoming has traditionally limited usability of systems based on metal oxide gas sensor arrays and ... -
Data set from gas sensor array under flow modulation
(Elsevier, 2015-06-30)
Article
Open AccessRecent studies in neuroscience suggest that sniffing, namely sampling odors actively, plays an important role in olfactory system, especially in certain scenarios such as novel odorant detection. While the computational ... -
Data simulation in machine olfaction with the R package chemosensors
(2014-02)
Article
Open AccessIn machine olfaction, the design of applications based on gas sensor arrays is highly dependent on the robustness of the signal and data processing algorithms. While the practice of testing the algorithms on public benchmarks ... -
Data-driven soft sensor development for a dividing wall distillation column
(Universitat Politècnica de Catalunya, 2019-07-08)
Bachelor thesis
Restricted access - author's decisionSoft sensors have increasingly gained attention in the chemical industry in recent years. In this work, a data-based soft sensor for on-line continuous distillate composition prediction of a dividing wall column is developed. ... -
Desenvolupament d'un sensor ceràmic intel·ligent per a la detecció i eliminació de microplàstics.
(Universitat Politècnica de Catalunya, 2022-10-26)
Bachelor thesis
Restricted access - confidentiality agreementThe current socio-environmental and health problems that have arisen from the research of the presence of microplastics in the human body expose the need not only to reduce the use of plastics but to eliminate those that ... -
Drift in a popular metal oxide sensor dataset reveals limitations for gas classification benchmarks
(Elsevier, 2022-06)
Article
Open AccessMetal oxide (MOx) gas sensors are a popular choice for many applications, due to their tunable sensitivity, space efficiency and low cost. Publicly available sensor datasets are particularly valuable for the research ... -
Improving calibration of chemical gas sensors for fire detection using small scale setups
(Multidisciplinary Digital Publishing Institute (MDPI), 2017)
Conference report
Open AccessChemical sensing may be better suited than conventional smoke-based detectors for the detection of certain type of fires, in particular in fires where smoke appears after gas emissions. However, chemical-based systems also ... -
Machine learning methods in electronic nose analysis
(2016)
Conference report
Open AccessThe main existent tool to monitor chemical environ- ments in a continuous mode is gas sensor arrays, which have been popularized as electronic noses (enoses). To design and validate these monitoring systems, it ... -
Mesoporous ceramic oxides as humidity sensors: A case study for gadolinium-doped ceria
(2015-09-01)
Article
Restricted access - publisher's policyMesoporous materials have been studied as high performance sensing materials due to their singular microstructure and extremely high surface-to-volume ratio. However, the lack of stability of these nanostructures is assumed ... -
Microfluidics and electrochemical sensors for sweat monitoring: paper-based chemiresistor sensor for sweat volume monitoring
(2023-05-17)
Conference lecture
Open Access -
Multi-unit calibration rejects inherent device variability of chemical sensor arrays
(2018)
Article
Open Access -
Multilayer ISFET membranes for microsystems applications
(1996-09-01)
Article
Restricted access - publisher's policyThe fabrication of microsystems in which chemical measurements play a role make the on-chip combination of chemical sensors and signal processing circuitry highly desirable. Chemical sensors use sensitive layers which are ... -
Nano-structured vanadium oxide thin films for gas sensors
(Universitat Politècnica de Catalunya / École Nationale Supérieure de Mécanique et des Microtechniques de Besançon, 2013)
Bachelor thesis
Open AccessVanadium thin films are prepared by DC magnetron sputtering using the GLancing Angle Deposition (GLAD) method. This technique will allow the growth of porous nano-structures with inclined columns, as well as zig-zags and ... -
Novel routes for inter-matrix synthesis and characterization of polymer stabilized metal nanoparticles for molecular recognition devices
(2006-10-25)
Article
Restricted access - publisher's policyThis paper reports the results obtained by development of novel approaches for inter-matrix synthesis and characterization of polymer stabilized metal nanoparticle (PSMNP), which can be applied in molecular recognition ...