liu.seSök publikationer i DiVA
Ändra sökning
Länk till posten
Permanent länk

Direktlänk
Publikationer (10 of 52) Visa alla publikationer
Domènech-Gil, G., Nguyen, T. D., Wikner, J. J., Eriksson, J., Puglisi, D. & Bastviken, D. (2024). Efficient Methane Monitoring with Low-Cost Chemical Sensorsand Machine Learning. In: : . Paper presented at EUROSENSORS XXXV, Lecce, Italy, 10–13 September, 2023 (pp. 79-81). MDPI, 97
Öppna denna publikation i ny flik eller fönster >>Efficient Methane Monitoring with Low-Cost Chemical Sensorsand Machine Learning
Visa övriga...
2024 (Engelska)Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

We present a method to monitor methane at atmospheric concentrations with errors inthe order of tens of parts per billion. We use machine learning techniques and periodic calibrationswith reference equipment to quantify methane from the readings of an electronic nose. The resultsobtained demonstrate versatile and robust solution that outputs adequate concentrations in a varietyof different cases studied, including indoor and outdoor environments with emissions arising fromnatural or anthropogenic sources. Our strategy opens the path to a wide-spread use of low-costsensor system networks for greenhouse gas monitoring.

Ort, förlag, år, upplaga, sidor
MDPI, 2024
Nationell ämneskategori
Fjärranalysteknik
Identifikatorer
urn:nbn:se:liu:diva-202213 (URN)10.3390/proceedings2024097079 (DOI)
Konferens
EUROSENSORS XXXV, Lecce, Italy, 10–13 September, 2023
Tillgänglig från: 2024-04-07 Skapad: 2024-04-07 Senast uppdaterad: 2024-04-18Bibliografiskt granskad
Eriksson, J., Puglisi, D. & Borgfeldt, C. (2024). Electronic Nose for Early Diagnosis of Ovarian Cancer. In: : . Paper presented at EUROSENSORS XXXV, Lecce, Italy, 10–13 September 2023 (pp. 145-147). MDPI, 97
Öppna denna publikation i ny flik eller fönster >>Electronic Nose for Early Diagnosis of Ovarian Cancer
2024 (Engelska)Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

We present an electronic nose that detects ovarian cancer based on gas emissions from blood plasma. There is currently no test available for screening or diagnostic testing of this disease, whichis therefore often detected at aa late stage, resulting in a poor prognosis. Our approach correctly detected 85 out of 87 ovarian cancers, ranging from borderline to stage IV.

Ort, förlag, år, upplaga, sidor
MDPI, 2024
Nationell ämneskategori
Cancer och onkologi Teknik och teknologier
Identifikatorer
urn:nbn:se:liu:diva-202215 (URN)10.3390/proceedings2024097145 (DOI)
Konferens
EUROSENSORS XXXV, Lecce, Italy, 10–13 September 2023
Tillgänglig från: 2024-04-07 Skapad: 2024-04-07 Senast uppdaterad: 2024-04-18Bibliografiskt granskad
Domènech-Gil, G., Nguyen, T. D., Wikner, J., Eriksson, J., Nilsson Påledal, S., Puglisi, D. & Bastviken, D. (2024). Electronic Nose for Improved Environmental Methane Monitoring. Environmental Science and Technology, 58, 352-361
Öppna denna publikation i ny flik eller fönster >>Electronic Nose for Improved Environmental Methane Monitoring
Visa övriga...
2024 (Engelska)Ingår i: Environmental Science and Technology, ISSN 0013-936X, E-ISSN 1520-5851, Vol. 58, s. 352-361Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Reducing emissions of the key greenhouse gas methane (CH4) is increasingly highlighted as being important to mitigate climate change. Effective emission reductions require cost-effective ways to measure CH4 to detect sources and verify that mitigation efforts work. We present here a novel approach to measure methane at atmospheric concentrations by means of a low-cost electronic nose strategy where the readings of a few sensors are combined, leading to errors down to 33 ppb and coefficients of determination, R-2, up to 0.91 for in situ measurements. Data from methane, temperature, humidity, and atmospheric pressure sensors were used in customized machine learning models to account for environmental cross-effects and quantify methane in the ppm-ppb range both in indoor and outdoor conditions. The electronic nose strategy was confirmed to be versatile with improved accuracy when more reference data were supplied to the quantification model. Our results pave the way toward the use of networks of low-cost sensor systems for the monitoring of greenhouse gases.

Ort, förlag, år, upplaga, sidor
AMER CHEMICAL SOC, 2024
Nyckelord
greenhouse gas; machine learning; gas sensors; low-cost
Nationell ämneskategori
Naturresursteknik Geovetenskap och miljövetenskap Signalbehandling
Identifikatorer
urn:nbn:se:liu:diva-200180 (URN)10.1021/acs.est.3c06945 (DOI)001139523100001 ()38126254 (PubMedID)
Anmärkning

Funding: Swedish Research Council FORMAS [2018-01794]; Swedish Research Council (Vetenskapsradet) [2016-04829, 2022-03841, 2021-0016, 725546]; European Research Council under the European Union [2017-00635]; Swedish Infrastructure for Ecosystem Science (SITES); Program SITES Water

Tillgänglig från: 2024-01-12 Skapad: 2024-01-12 Senast uppdaterad: 2024-01-24
Domènech-Gil, G. & Puglisi, D. (2024). Machine Learning for Enhanced Operation of UnderperformingSensors in Humid Conditions. In: : . Paper presented at EUROSENSORS XXXV, Lecce, Italy, 10–13 September, 2023 (pp. 87-89). MDPI, 97
Öppna denna publikation i ny flik eller fönster >>Machine Learning for Enhanced Operation of UnderperformingSensors in Humid Conditions
2024 (Engelska)Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

Using a single sensor as a virtual electronic nose, we demonstrate the possibility of obtaininggood results with underperforming sensors that, at first glance, would be discarded. For this aim, wecharacterized chemical gas sensors with low repeatability and random drift towards both dangerousand innocuous volatile organic compounds (VOCs) under different levels of relative humidity. Ourresults show classification accuracies higher than 90% when differentiating harmful from harmlessVOCs and coefficients of determination, R2, higher than 80% when determining their concentrationin the parts per billion to parts per million range.

Ort, förlag, år, upplaga, sidor
MDPI, 2024
Nationell ämneskategori
Teknik och teknologier Naturvetenskap
Identifikatorer
urn:nbn:se:liu:diva-202214 (URN)10.3390/proceedings2024097087 (DOI)
Konferens
EUROSENSORS XXXV, Lecce, Italy, 10–13 September, 2023
Tillgänglig från: 2024-04-07 Skapad: 2024-04-07 Senast uppdaterad: 2024-04-18Bibliografiskt granskad
Casalinuovo, S., Buzzin, A., Mastrandrea, A., Barbirotta, M., Puglisi, D., de Cesare, G. & Caputo, D. (2024). Questioning Breath: A Digital Dive into CO2 Levels. In: : . Paper presented at EUROSENSORS XXXV, Lecce, Italy, 10–13 September, 2023 (pp. 157-159). MDPI, 97
Öppna denna publikation i ny flik eller fönster >>Questioning Breath: A Digital Dive into CO2 Levels
Visa övriga...
2024 (Engelska)Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

This work presents a smart mask for real-time monitoring of carbon dioxide (CO2) levels asa reference tool for diagnosis, sports training and mental health status. A printed circuit board wasprojected and fabricated to gain data with real-time visualization and storage on a database, enablingremote monitoring as a needed skill for telemedicine purposes. The electronics were inserted in awearable device—shaped like a mask—and 3D-printed with biocompatible materials. The wholedevice was used for analyzing CO2 on a breath volunteer in three kinds of measurement.

Ort, förlag, år, upplaga, sidor
MDPI, 2024
Nationell ämneskategori
Hälsovetenskaper Teknik och teknologier
Identifikatorer
urn:nbn:se:liu:diva-202212 (URN)10.3390/proceedings2024097157 (DOI)
Konferens
EUROSENSORS XXXV, Lecce, Italy, 10–13 September, 2023
Tillgänglig från: 2024-04-07 Skapad: 2024-04-07 Senast uppdaterad: 2024-04-18Bibliografiskt granskad
Casalinuovo, S., Buzzin, A., Mastrandrea, A., Mazzetta, I., Barbirotta, M., Iannascoli, L., . . . Caputo, D. (2023). 3D-Printed Face Mask with Integrated Sensors as Protective and Monitoring Tool. In: Girolamo Di Francia, Corrado Di Natale (Ed.), Sensors and Microsystems: Proceedings of AISEM 2022. Paper presented at AISEM 2022 - Italian Association of Sensors and Microsystems. , 999
Öppna denna publikation i ny flik eller fönster >>3D-Printed Face Mask with Integrated Sensors as Protective and Monitoring Tool
Visa övriga...
2023 (Engelska)Ingår i: Sensors and Microsystems: Proceedings of AISEM 2022 / [ed] Girolamo Di Francia, Corrado Di Natale, 2023, Vol. 999Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

The outbreak of the recent Covid-19 pandemic changed many aspects of our daily life, such as the constant wearing of face masks as protection from virus transmission risks. Furthermore, it exposed the healthcare system’s fragilities, showing the urgent need to design a more inclusive model that takes into account possible future emergencies, together with population’s aging and new severe pathologies. In this framework, face masks can be both a physical barrier against viruses and, at the same time, a telemedical diagnostic tool. In this paper, we propose a low-cost, 3D-printed face mask able to protect the wearer from virus transmission, thanks to internal FFP2 filters, and to monitor the air quality (temperature, humidity, CO2) inside the mask. Acquired data are automatically transmitted to a web terminal, thanks to sensors and electronics embedded in the mask. Our preliminary results encourage more efforts in these regards, towards rapid, inexpensive and smart ways to integrate more sensors into the mask’s breathing zone in order to use the patient’s breath as a fingerprint for various diseases.

Serie
Lecture Notes in Electrical Engineering, ISSN 1876-1100, E-ISSN 1876-1119 ; 999
Nyckelord
Breathing zone Face mask, 3D-printing, Wearable sensors, CO2, Humidity, Temperature, Telemedicine
Nationell ämneskategori
Medicinteknik
Identifikatorer
urn:nbn:se:liu:diva-188955 (URN)10.1007/978-3-031-25706-3_7 (DOI)978-3-031-25708-7 (ISBN)978-3-031-25706-3 (ISBN)
Konferens
AISEM 2022 - Italian Association of Sensors and Microsystems
Tillgänglig från: 2022-10-04 Skapad: 2022-10-04 Senast uppdaterad: 2023-03-07Bibliografiskt granskad
Casalinuovo, S., Buzzin, A., Caschera, D., Quaranta, S., Federici, F., Zortea, L., . . . Caputo, D. (2023). AuNP-coated cotton as VOC sensor for disease detection from breath. In: Cocorullo, G., Crupi, F., Limiti, E (Ed.), Proceedings of SIE 2022: 53rd Annual Meeting of the Italian Electronics Society. Paper presented at SIE 2022 - Società Italiana di Ematologia. , 1005
Öppna denna publikation i ny flik eller fönster >>AuNP-coated cotton as VOC sensor for disease detection from breath
Visa övriga...
2023 (Engelska)Ingår i: Proceedings of SIE 2022: 53rd Annual Meeting of the Italian Electronics Society / [ed] Cocorullo, G., Crupi, F., Limiti, E, 2023, Vol. 1005Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

The COVID-19 pandemic outbreak, declared in March 2020, has led to several behavioral changes in the general population, such as social distancing and mask usage among others. Furthermore, the sanitary emergency has stressed health system weaknesses in terms of disease prevention, diagnosis, and cure. Thus, smart technologies allowing for early and quick detection of diseases are called for. In this framework, the development of point-of-care devices can provide new solutions for sanitary emergencies management. This work focuses on the development of useful tools for early disease diagnosis based on nanomaterials on cotton substrates, to obtain a low-cost and easy-to-use detector of breath volatiles as disease markers. Specifically, we report encouraging experimental results concerning acetone detection through impedance measurements. Such findings can pave the way to the implementation of VOCs (Volatile Organic Compounds) sensors into smart and user friendly diagnostic devices.

Serie
Lecture Notes in Electrical Engineering, ISSN 1876-1100, E-ISSN 1876-1119 ; 1005
Nyckelord
Gold nanoparticle (AuNP), Acetone, Volatile, Organic Compound (VOC), Cotton, Impedance sensor
Nationell ämneskategori
Medicinteknik
Identifikatorer
urn:nbn:se:liu:diva-188954 (URN)10.1007/978-3-031-26066-7_17 (DOI)978-3-031-26066-7 (ISBN)978-3-031-26065-0 (ISBN)
Konferens
SIE 2022 - Società Italiana di Ematologia
Tillgänglig från: 2022-10-04 Skapad: 2022-10-04 Senast uppdaterad: 2023-03-07Bibliografiskt granskad
Casalinuovo, S., Caschera, D., Quaranta, S., Genova, V., Buzzin, A., Federici, F., . . . Caputo, D. (2023). Cotone funzionalizzato con nanoparticelle d'oro come promettente substrato flessibile ed ecologico per il rilevamento impedometrico di COV [Gold Nanoparticles-Functionalized Cotton as Promising Flexible and Green Substrate for Impedometric VOC Detection]. Materials, 16, Article ID 5826.
Öppna denna publikation i ny flik eller fönster >>Cotone funzionalizzato con nanoparticelle d'oro come promettente substrato flessibile ed ecologico per il rilevamento impedometrico di COV [Gold Nanoparticles-Functionalized Cotton as Promising Flexible and Green Substrate for Impedometric VOC Detection]
Visa övriga...
2023 (Italienska)Ingår i: Materials, E-ISSN 1996-1944, Vol. 16, artikel-id 5826Artikel i tidskrift (Refereegranskat) Published
Abstract [it]

Questo lavoro si concentra sulla possibile applicazione di nanoparticelle d'oro su tessuti di cotone flessibili come substrati sensibili all'acetone e all'etanolo mediante misurazioni di impedenza. Nello specifico, nanoparticelle d'oro (NP Au) funzionalizzate con citrato e polivinilpirrolidone (PVP) sono state sintetizzate utilizzando procedure verdi e consolidate e depositate su tessuto di cotone. Una caratterizzazione strutturale e morfologica completa è stata condotta utilizzando la spettroscopia UV-VIS e infrarossa a trasformata di Fourier (FT-IR), la microscopia a forza atomica (AFM) e la microscopia elettronica a scansione (SEM). Una caratterizzazione dielettrica dettagliata del substrato vuoto ha rivelato effetti di polarizzazione interfacciale legati sia alle NP Au che alla loro specifica funzionalizzazione superficiale. Ad esempio, rivestendo interamente il tessuto di cotone (ovvero creando una matrice più isolante), è stato riscontrato che il PVP aumenta la resistenza del campione, ovvero diminuisce l'interconnessione elettrica delle NP Au rispetto al campione funzionalizzato con citrato. Tuttavia, è stato osservato che la funzionalizzazione del citrato ha fornito una distribuzione uniforme delle NP Au, che ha ridotto la loro spaziatura e, quindi, facilitato il trasporto degli elettroni. Per quanto riguarda il rilevamento dei composti organici volatili (COV), le misurazioni della spettroscopia di impedenza elettrochimica (EIS) hanno mostrato che il legame idrogeno e la risultante impedenza di migrazione protonica sono fondamentali per distinguere l'etanolo dall'acetone. 

Abstract [en]

This work focuses on the possible application of gold nanoparticles on flexible cotton fabric as acetone- and ethanol-sensitive substrates by means of impedance measurements. Specifically, citrate- and polyvinylpyrrolidone (PVP)-functionalized gold nanoparticles (Au NPs) were synthesized using green and well-established procedures and deposited on cotton fabric. A complete structural and morphological characterization was conducted using UV-VIS and Fourier transform infrared (FT-IR) spectroscopy, atomic force microscopy (AFM), and scanning electron microscopy (SEM). A detailed dielectric characterization of the blank substrate revealed interfacial polarization effects related to both Au NPs and their specific surface functionalization. For instance, by entirely coating the cotton fabric (i.e., by creating a more insulating matrix), PVP was found to increase the sample resistance, i.e., to decrease the electrical interconnection of Au NPs with respect to citrate functionalized sample. However, it was observed that citrate functionalization provided a uniform distribution of Au NPs, which reduced their spacing and, therefore, facilitated electron transport. Regarding the detection of volatile organic compounds (VOCs), electrochemical impedance spectroscopy (EIS) measurements showed that hydrogen bonding and the resulting proton migration impedance are instrumental in distinguishing ethanol and acetone. Such findings can pave the way for the development of VOC sensors integrated into personal protective equipment and wearable telemedicine devices. This approach may be crucial for early disease diagnosis based on nanomaterials to attain low-cost/low-end and easy-to-use detectors of breath volatiles as disease markers.

Ort, förlag, år, upplaga, sidor
MDPI, 2023
Nyckelord
gold nanoparticle (AuNP); volatile organic compound (VOC); cotton; impedance measurements; citrate; PVP
Nationell ämneskategori
Materialkemi
Identifikatorer
urn:nbn:se:liu:diva-197203 (URN)10.3390/ma16175826 (DOI)001062090900001 ()37687519 (PubMedID)
Anmärkning

Funding: The authors thanks T. De Caro, A. Brotzu, L. Zortea, and L. Cerri for their technical support in Raman, SEM, and AFM measurements.

Tillgänglig från: 2023-08-25 Skapad: 2023-08-25 Senast uppdaterad: 2024-01-17
Puglisi, D. & Domènech-Gil, G. (2023). Enabling Lifelong Learning by Using Multiple Engagement Tools. In: Proceedings of the 19th International CDIO Conference: . Paper presented at CDIO Conference 2023, Trondheim (Norway), 26-29 June 2023 (pp. 633-643).
Öppna denna publikation i ny flik eller fönster >>Enabling Lifelong Learning by Using Multiple Engagement Tools
2023 (Engelska)Ingår i: Proceedings of the 19th International CDIO Conference, 2023, s. 633-643Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

This study aims to identify effective engagement tools and strategies that may strengthen student learning processes with a long-term impact. The context of learning plays an active role in student performance and needs to be carefully considered when designing collaborative learning environments. In the framework of a CDIO course entitled Project Course in Applied Physics (12 ECTS), master’s students in applied physics, electrical engineering, biomedical engineering, material science and nanotechnology work in groups of four to seven people for realizing their own project idea given three broad requirements: (i) use gas sensors, (ii) manage a certain maximum budget to purchase components, and (iii) build a working prototypefor any indoor air quality monitoring application of interest for them and their customer. Groupsare generally multicultural and multidisciplinary. Qualified supervision and skills training activities are adapted to facilitate the students’ progress and guarantee the success of their project work. Based on observations, feedback, and results over a five-year period, this approach appears more engaging and inspiring for both students and teachers compared to more defined projects. Encouraging the students to conceive their own original ideas, involving them in the co-creation of the learning process, and building knowledge, understanding, and skills through a variety of engaging experiences, helps their motivation, interest, active participation, and creativity with a direct impact on the quality of their learning. As an example of successful project work, here we report on two groups of students at Linköping University, Sweden, who have recently designed, developed, and tested an innovative sensor system prototype for smart monitoring of gas and particle emissions from cooking activities. The project course has received 5.0/5.0 as an overall students’ evaluation.

Nyckelord
Lifelong learning, Experiential learning, Active learning, Skills training, Multicultural environment, Engagement, CDIO Standards
Nationell ämneskategori
Lärande
Identifikatorer
urn:nbn:se:liu:diva-198444 (URN)9788230361863 (ISBN)
Konferens
CDIO Conference 2023, Trondheim (Norway), 26-29 June 2023
Tillgänglig från: 2023-10-12 Skapad: 2023-10-12 Senast uppdaterad: 2023-10-18Bibliografiskt granskad
Domènech-Gil, G. & Puglisi, D. (2023). Machine Learning for Enhanced Operation of Underperforming Sensors in Humid Conditions. In: : . Paper presented at EUROSENSORS XXXV, Lecce, Italy, 10-13 September, 2023.. MDPI
Öppna denna publikation i ny flik eller fönster >>Machine Learning for Enhanced Operation of Underperforming Sensors in Humid Conditions
2023 (Engelska)Konferensbidrag, Muntlig presentation med publicerat abstract (Övrigt vetenskapligt)
Abstract [en]

By using a single sensor as a virtual electronic nose, we demonstrate the possibility of obtaining good results with underperforming sensors that, at first glance, would be discarded. For this aim, we characterized chemical gas sensors with low repeatability and random drift towards both dangerous and innocuous volatile organic compounds (VOCs) under different levels of relative humidity. Our results show classification accuracies higher than 90% when differentiating harmful from harmless VOCs and coefficients of determination, R2, higher than 80% when determining their concentrationin the parts per billion to parts per million range.

Ort, förlag, år, upplaga, sidor
MDPI, 2023
Nyckelord
air quality monitoring; indoor; electronic nose; virtual sensor; machine learning
Nationell ämneskategori
Teknik och teknologier
Identifikatorer
urn:nbn:se:liu:diva-201880 (URN)
Konferens
EUROSENSORS XXXV, Lecce, Italy, 10-13 September, 2023.
Forskningsfinansiär
EU, Horisont 2020, 814596EU, Horisont 2020, 101015825Vinnova, 2019-02095
Tillgänglig från: 2024-03-25 Skapad: 2024-03-25 Senast uppdaterad: 2024-04-17Bibliografiskt granskad
Organisationer
Identifikatorer
ORCID-id: ORCID iD iconorcid.org/0000-0003-0646-5266

Sök vidare i DiVA

Visa alla publikationer