LIVIVO - Search results -

Search results

Result 1 - 10 of total 39

Search options

Article ; Online: Surface modification of halide perovskite using EDTA-complexed SnO

Marques, Nuno / Jana, Santanu / Mendes, Manuel J / Águas, Hugo / Martins, Rodrigo / Panigrahi, Shrabani

RSC advances

2024 Volume 14, Issue 18, Page(s) 12397–12406

Abstract: The long-term performance of metal halide perovskite solar cells (PSCs) can be significantly improved by tuning the surface characteristics of the perovskite layers. Herein, low-temperature-processed ethylenediaminetetraacetic acid (EDTA)-complexed ... ...

Abstract	The long-term performance of metal halide perovskite solar cells (PSCs) can be significantly improved by tuning the surface characteristics of the perovskite layers. Herein, low-temperature-processed ethylenediaminetetraacetic acid (EDTA)-complexed SnO
Language	English
Publishing date	2024-04-17
Publishing country	England
Document type	Journal Article
ISSN	2046-2069
ISSN (online)	2046-2069
DOI	10.1039/d3ra08900b
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Article ; Online: Hybrid Digital-Droplet Microfluidic Chip for Applications in Droplet Digital Nucleic Acid Amplification: Design, Fabrication and Characterization.

Coelho, Beatriz J / Neto, Joana P / Sieira, Bárbara / Moura, André T / Fortunato, Elvira / Martins, Rodrigo / Baptista, Pedro V / Igreja, Rui / Águas, Hugo

Sensors (Basel, Switzerland)

2023 Volume 23, Issue 10

Abstract: Microfluidic-based platforms have become a hallmark for chemical and biological assays, empowering micro- and nano-reaction vessels. The fusion of microfluidic technologies (digital microfluidics, continuous-flow microfluidics, and droplet microfluidics, ...

Abstract	Microfluidic-based platforms have become a hallmark for chemical and biological assays, empowering micro- and nano-reaction vessels. The fusion of microfluidic technologies (digital microfluidics, continuous-flow microfluidics, and droplet microfluidics, just to name a few) presents great potential for overcoming the inherent limitations of each approach, while also elevating their respective strengths. This work exploits the combination of digital microfluidics (DMF) and droplet microfluidics (DrMF) on a single substrate, where DMF enables droplet mixing and further acts as a controlled liquid supplier for a high-throughput nano-liter droplet generator. Droplet generation is performed at a flow-focusing region, operating on dual pressure: negative pressure applied to the aqueous phase and positive pressure applied to the oil phase. We evaluate the droplets produced with our hybrid DMF-DrMF devices in terms of droplet volume, speed, and production frequency and further compare them with standalone DrMF devices. Both types of devices enable customizable droplet production (various volumes and circulation speeds), yet hybrid DMF-DrMF devices yield more controlled droplet production while achieving throughputs that are similar to standalone DrMF devices. These hybrid devices enable the production of up to four droplets per second, which reach a maximum circulation speed close to 1540 µm/s and volumes as low as 0.5 nL.
MeSH term(s)	Microfluidics ; Biological Assay ; Lab-On-A-Chip Devices ; Technology ; Nucleic Acids
Chemical Substances	Nucleic Acids
Language	English
Publishing date	2023-05-20
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2052857-7
ISSN	1424-8220 ; 1424-8220
ISSN (online)	1424-8220
ISSN	1424-8220
DOI	10.3390/s23104927
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article ; Online: Isolation of acute myeloid leukemia blasts from blood using a microfluidic device.

Teixeira, Alexandra / Sousa-Silva, Maria / Chícharo, Alexandre / Oliveira, Kevin / Moura, André / Carneiro, Adriana / Piairo, Paulina / Águas, Hugo / Sampaio-Marques, Belém / Castro, Isabel / Mariz, José / Ludovico, Paula / Abalde-Cela, Sara / Diéguez, Lorena

The Analyst

2024 Volume 149, Issue 10, Page(s) 2812–2825

Abstract: Acute myeloid leukemia (AML) is the most common form of acute leukemia in adults and associated with poor prognosis. Unfortunately, most of the patients that achieve clinical complete remission after the treatment will ultimately relapse due to the ... ...

Abstract	Acute myeloid leukemia (AML) is the most common form of acute leukemia in adults and associated with poor prognosis. Unfortunately, most of the patients that achieve clinical complete remission after the treatment will ultimately relapse due to the persistence of minimal residual disease (MRD), that is not measurable using conventional technologies in the clinic. Microfluidics is a potential tool to improve the diagnosis by providing early detection of MRD. Herein, different designs of microfluidic devices were developed to promote lateral and vertical mixing of cells in microchannels to increase the contact area of the cells of interest with the inner surface of the device. Possible interactions between the cells and the surface were studied using fluid simulations. For the isolation of leukemic blasts, a positive selection strategy was used, targeting the cells of interest using a panel of specific biomarkers expressed in immature and aberrant blasts. Finally, once the optimisation was complete, the best conditions were used to process patient samples for downstream analysis and benchmarking, including phenotypic and genetic characterisation. The potential of these microfluidic devices to isolate and detect AML blasts may be exploited for the monitoring of AML patients at different stages of the disease.
MeSH term(s)	Humans ; Leukemia, Myeloid, Acute/pathology ; Leukemia, Myeloid, Acute/blood ; Cell Separation/methods ; Cell Separation/instrumentation ; Lab-On-A-Chip Devices ; Microfluidic Analytical Techniques/methods ; Microfluidic Analytical Techniques/instrumentation
Language	English
Publishing date	2024-05-13
Publishing country	England
Document type	Journal Article
ZDB-ID	210747-8
ISSN	1364-5528 ; 0003-2654
ISSN (online)	1364-5528
ISSN	0003-2654
DOI	10.1039/d4an00158c
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Zs.A 2423: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
Jg. 1995 - 2021: Lesesall (2.OG)
ab Jg. 2022: Lesesaal (EG)

Order via subito

Details ▾
- See ZB MED holdings
- Order with fees

Article: Copper-Arsenic-Sulfide Thin-Films from Local Raw Materials Deposited via RF Co-Sputtering for Photovoltaics.

Centeno, Pedro / Alexandre, Miguel / Neves, Filipe / Fortunato, Elvira / Martins, Rodrigo / Águas, Hugo / Mendes, Manuel J

Nanomaterials (Basel, Switzerland)

2022 Volume 12, Issue 19

Abstract: The inexorable increase of energy demand and the efficiency bottleneck of monocrystalline silicon solar cell technology is promoting the research and development of alternative photovoltaic materials. Copper-arsenic-sulfide (CAS) compounds are still ... ...

Abstract	The inexorable increase of energy demand and the efficiency bottleneck of monocrystalline silicon solar cell technology is promoting the research and development of alternative photovoltaic materials. Copper-arsenic-sulfide (CAS) compounds are still rather unexplored in the literature, yet they have been regarded as promising candidates for use as p-type absorber in solar cells, owing to their broad raw material availability, suitable bandgap and high absorption coefficient. Here, a comprehensive study is presented on the structural and optoelectronic properties of CAS thin-films deposited via radio-frequency magnetron co-sputtering, using a commercial Cu target together with a Cu-As-S target with material obtained from local resources, specifically from mines in the Portuguese region of the Iberian Pyrite Belt. Raman and X-ray diffraction analysis confirm that the use of two targets results in films with pronounced stoichiometry gradients, suggesting a transition from amorphous CAS compounds to crystalline djurleite (Cu
Language	English
Publishing date	2022-09-20
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2662255-5
ISSN	2079-4991
ISSN	2079-4991
DOI	10.3390/nano12193268
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article ; Online: Digital Microfluidics-Powered Real-Time Monitoring of Isothermal DNA Amplification of Cancer Biomarker.

Coelho, Beatriz Jorge / Veigas, Bruno / Bettencourt, Luís / Águas, Hugo / Fortunato, Elvira / Martins, Rodrigo / Baptista, Pedro V / Igreja, Rui

Biosensors

2022 Volume 12, Issue 4

Abstract: We introduce a digital microfluidics (DMF) platform specifically designed to perform a loop-mediated isothermal amplification (LAMP) of DNA and applied it to a real-time amplification to monitor a cancer biomarker, ...

Abstract	We introduce a digital microfluidics (DMF) platform specifically designed to perform a loop-mediated isothermal amplification (LAMP) of DNA and applied it to a real-time amplification to monitor a cancer biomarker,
MeSH term(s)	Biomarkers, Tumor ; DNA ; Fluorescent Dyes ; Humans ; Microfluidics/methods ; Neoplasms/diagnosis ; Nucleic Acid Amplification Techniques/methods ; Oligonucleotide Array Sequence Analysis
Chemical Substances	Biomarkers, Tumor ; Fluorescent Dyes ; DNA (9007-49-2)
Language	English
Publishing date	2022-03-28
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2662125-3
ISSN	2079-6374 ; 2079-6374
ISSN (online)	2079-6374
ISSN	2079-6374
DOI	10.3390/bios12040201
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article ; Online: Transduction Mechanisms, Micro-Structuring Techniques, and Applications of Electronic Skin Pressure Sensors: A Review of Recent Advances.

Dos Santos, Andreia / Fortunato, Elvira / Martins, Rodrigo / Águas, Hugo / Igreja, Rui

Sensors (Basel, Switzerland)

2020 Volume 20, Issue 16

Abstract: Electronic skin (e-skin), which is an electronic surrogate of human skin, aims to recreate the multifunctionality of skin by using sensing units to detect multiple stimuli, while keeping key features of skin such as low thickness, stretchability, ... ...

Abstract	Electronic skin (e-skin), which is an electronic surrogate of human skin, aims to recreate the multifunctionality of skin by using sensing units to detect multiple stimuli, while keeping key features of skin such as low thickness, stretchability, flexibility, and conformability. One of the most important stimuli to be detected is pressure due to its relevance in a plethora of applications, from health monitoring to functional prosthesis, robotics, and human-machine-interfaces (HMI). The performance of these e-skin pressure sensors is tailored, typically through micro-structuring techniques (such as photolithography, unconventional molds, incorporation of naturally micro-structured materials, laser engraving, amongst others) to achieve high sensitivities (commonly above 1 kPa
MeSH term(s)	Artificial Limbs ; Electronics ; Humans ; Pressure ; Robotics ; Wearable Electronic Devices
Language	English
Publishing date	2020-08-07
Publishing country	Switzerland
Document type	Journal Article ; Review
ZDB-ID	2052857-7
ISSN	1424-8220 ; 1424-8220
ISSN (online)	1424-8220
ISSN	1424-8220
DOI	10.3390/s20164407
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article ; Online: Open-source tool for real-time and automated analysis of droplet-based microfluidic.

Neto, Joana P / Mota, Ana / Lopes, Gonçalo / Coelho, Beatriz J / Frazão, João / Moura, André T / Oliveira, Beatriz / Sieira, Bárbara / Fernandes, José / Fortunato, Elvira / Martins, Rodrigo / Igreja, Rui / Baptista, Pedro V / Águas, Hugo

Lab on a chip

2023 Volume 23, Issue 14, Page(s) 3238–3244

Abstract: Droplet-based microfluidic technology is a powerful tool for generating large numbers of monodispersed nanoliter-sized droplets for ultra-high throughput screening of molecules or single cells. Yet further progress in the development of methods for the ... ...

Abstract	Droplet-based microfluidic technology is a powerful tool for generating large numbers of monodispersed nanoliter-sized droplets for ultra-high throughput screening of molecules or single cells. Yet further progress in the development of methods for the real-time detection and measurement of passing droplets is needed for achieving fully automated systems and ultimately scalability. Existing droplet monitoring technologies are either difficult to implement by non-experts or require complex experimentation setups. Moreover, commercially available monitoring equipment is expensive and therefore limited to a few laboratories worldwide. In this work, we validated for the first time an easy-to-use, open-source Bonsai visual programming language to accurately measure in real-time droplets generated in a microfluidic device. With this method, droplets are found and characterized from bright-field images with high processing speed. We used off-the-shelf components to achieve an optical system that allows sensitive image-based, label-free, and cost-effective monitoring. As a test of its use we present the results, in terms of droplet radius, circulation speed and production frequency, of our method and compared its performance with that of the widely-used ImageJ software. Moreover, we show that similar results are obtained regardless of the degree of expertise. Finally, our goal is to provide a robust, simple to integrate, and user-friendly tool for monitoring droplets, capable of helping researchers to get started in the laboratory immediately, even without programming experience, enabling analysis and reporting of droplet data in real-time and closed-loop experiments.
Language	English
Publishing date	2023-07-12
Publishing country	England
Document type	Journal Article
ZDB-ID	2056646-3
ISSN	1473-0189 ; 1473-0197
ISSN (online)	1473-0189
ISSN	1473-0197
DOI	10.1039/d3lc00327b
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article ; Online: A simple polystyrene microfluidic device for sensitive and accurate SERS-based detection of infection by malaria parasites.

Oliveira, Maria João / Caetano, Soraia / Dalot, Ana / Sabino, Filipe / Calmeiro, Tomás R / Fortunato, Elvira / Martins, Rodrigo / Pereira, Eulália / Prudêncio, Miguel / Byrne, Hugh J / Franco, Ricardo / Águas, Hugo

The Analyst

2023 Volume 148, Issue 17, Page(s) 4053–4063

Abstract: Early and accurate detection of infection by pathogenic microorganisms, such as Plasmodium, the causative agent of malaria, is critical for clinical diagnosis and ultimately determines the patient's outcome. We have combined a polystyrene-based ... ...

Abstract	Early and accurate detection of infection by pathogenic microorganisms, such as Plasmodium, the causative agent of malaria, is critical for clinical diagnosis and ultimately determines the patient's outcome. We have combined a polystyrene-based microfluidic device with an immunoassay which utilises Surface-Enhanced Raman Spectroscopy (SERS) to detect malaria. The method can be easily translated to a point-of-care testing format and shows excellent sensitivity and specificity, when compared to the gold standard for laboratorial detection of Plasmodium infections. The device can be fabricated in less than 30 min by direct patterning on shrinkable polystyrene sheets of adaptable three-dimensional microfluidic chips. To validate the microfluidic system, samples of
MeSH term(s)	Humans ; Animals ; Parasites ; Polystyrenes ; Plasmodium falciparum ; Reproducibility of Results ; Malaria/diagnosis ; Malaria, Falciparum/diagnosis ; Plasmodium ; Sensitivity and Specificity ; Lab-On-A-Chip Devices
Chemical Substances	Polystyrenes
Language	English
Publishing date	2023-08-21
Publishing country	England
Document type	Journal Article
ZDB-ID	210747-8
ISSN	1364-5528 ; 0003-2654
ISSN (online)	1364-5528
ISSN	0003-2654
DOI	10.1039/d3an00971h
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Zs.A 2423: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
Jg. 1995 - 2021: Lesesall (2.OG)
ab Jg. 2022: Lesesaal (EG)

Order via subito

Details ▾
- See ZB MED holdings
- Order with fees

Article: High UV and Sunlight Photocatalytic Performance of Porous ZnO Nanostructures Synthesized by a Facile and Fast Microwave Hydrothermal Method.

Ferreira, Sofia Henriques / Morais, Maria / Nunes, Daniela / Oliveira, Maria João / Rovisco, Ana / Pimentel, Ana / Águas, Hugo / Fortunato, Elvira / Martins, Rodrigo

Materials (Basel, Switzerland)

2021 Volume 14, Issue 9

Abstract: The degradation of organic pollutants in wastewaters assisted by oxide semiconductor nanostructures has been the focus of many research groups over the last decades, along with the synthesis of these nanomaterials by simple, eco-friendly, fast, and cost- ... ...

Abstract	The degradation of organic pollutants in wastewaters assisted by oxide semiconductor nanostructures has been the focus of many research groups over the last decades, along with the synthesis of these nanomaterials by simple, eco-friendly, fast, and cost-effective processes. In this work, porous zinc oxide (ZnO) nanostructures were successfully synthesized via a microwave hydrothermal process. A layered zinc hydroxide carbonate (LZHC) precursor was obtained after 15 min of synthesis and submitted to different calcination temperatures to convert it into porous ZnO nanostructures. The influence of the calcination temperature (300, 500, and 700 °C) on the morphological, structural, and optical properties of the ZnO nanostructureswas investigated. All ZnO samples were tested as photocatalysts in the degradation of rhodamine B (RhB) under UV irradiation and natural sunlight. All samples showed enhanced photocatalytic activity under both light sources, with RhB being practically degraded within 60 min in both situations. The porous ZnO obtained at 700 °C showed the greatest photocatalytic activity due to its high crystallinity, with a degradation rate of 0.091 and 0.084 min
Language	English
Publishing date	2021-05-04
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2487261-1
ISSN	1996-1944
ISSN	1996-1944
DOI	10.3390/ma14092385
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article: Colloidal Lithography for Photovoltaics: An Attractive Route for Light Management.

Oliveira, Rui D / Mouquinho, Ana / Centeno, Pedro / Alexandre, Miguel / Haque, Sirazul / Martins, Rodrigo / Fortunato, Elvira / Águas, Hugo / Mendes, Manuel J

Nanomaterials (Basel, Switzerland)

2021 Volume 11, Issue 7

Abstract: The pursuit of ever-more efficient, reliable, and affordable solar cells has pushed the development of nano/micro-technological solutions capable of boosting photovoltaic (PV) performance without significantly increasing costs. One of the most relevant ... ...

Abstract	The pursuit of ever-more efficient, reliable, and affordable solar cells has pushed the development of nano/micro-technological solutions capable of boosting photovoltaic (PV) performance without significantly increasing costs. One of the most relevant solutions is based on light management via photonic wavelength-sized structures, as these enable pronounced efficiency improvements by reducing reflection and by trapping the light inside the devices. Furthermore, optimized microstructured coatings allow self-cleaning functionality via effective water repulsion, which reduces the accumulation of dust and particles that cause shading. Nevertheless, when it comes to market deployment, nano/micro-patterning strategies can only find application in the PV industry if their integration does not require high additional costs or delays in high-throughput solar cell manufacturing. As such, colloidal lithography (CL) is considered the preferential structuring method for PV, as it is an inexpensive and highly scalable soft-patterning technique allowing nanoscopic precision over indefinitely large areas. Tuning specific parameters, such as the size of colloids, shape, monodispersity, and final arrangement, CL enables the production of various templates/masks for different purposes and applications. This review intends to compile several recent high-profile works on this subject and how they can influence the future of solar electricity.
Language	English
Publishing date	2021-06-24
Publishing country	Switzerland
Document type	Journal Article ; Review
ZDB-ID	2662255-5
ISSN	2079-4991
ISSN	2079-4991
DOI	10.3390/nano11071665
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

To top

More links

Kategorien

Order via subito

Inter-library loan at ZB MED

More links

Kategorien

Order via subito

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

More links

Kategorien

Order via subito

More links

Kategorien

Order via subito

More links

Kategorien

Order via subito

More links

Kategorien

Order via subito

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

More links

Kategorien

Order via subito

More links

Kategorien

Order via subito