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Raquel Pruna
University of Barcelona
ElectrodeInorganic chemistryPotentiostatIndium tin oxideDielectric spectroscopy
12Publications
4H-index
36Citations
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Publications 11
Newest
#1Raquel Pruna (University of Barcelona)H-Index: 4
#2Manel López (University of Barcelona)H-Index: 14
Last. Francesc Teixidor (ICMAB: Institute of Cost and Management Accountants of Bangladesh)H-Index: 23
view all 3 authors...
Nanostructured indium tin oxide (ITO) surfaces present an interesting yet unusual combination of properties (high electrical conductivity and optical transparency) at a high surface-to-volume ratio. Thus, previous studies presented nanostructured ITO electrodes as potentially suitable platforms for electrochemical biosensors, but still there is a lack of research on the optimization of preparation methods for such electrodes. We present a systematic study on the properties of nanostructured ITO ...
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#1Raquel PrunaH-Index: 4
#2Francisco PalacioH-Index: 5
Last. Manuel LopezH-Index: 16
view all 6 authors...
A novel transparent and nanostructured ion-sensitive electrode based on indium tin oxide (ITO) coated with cobaltbis(dicarbollide)-doped poly(pyrrole) (PPy) is presented in this work. This metallacarborane-doped PPy was used as conducting polymer due to its high stability and chemical resistance. The ion-sensitive electrode was coupled to a miniaturized and low-cost potentiostat, in a final autonomous kit for potentiometric determination of pH. Qualitative calibration of the system revealed Nern...
Source
#1Raquel Pruna (University of Barcelona)H-Index: 4
#2Abdoullatif Baraket (University of Lyon)H-Index: 9
Last. Manel López (University of Barcelona)H-Index: 14
view all 6 authors...
Abstract The need for new and innovative point of care (POC) systems providing a feasible alternative to costly and time consuming standard laboratory techniques is becoming more evident every day, particularly in the case of cardiovascular diseases. Coupling optical and electrochemical principles for highly specific and sensitive detection of biomarkers could boost the successful implementation of POC systems in biomedical environments. We suggest indium tin oxide (ITO) as a promising material ...
5 CitationsSource
#1Alvaro Garcia-Cruz (UCBL: Claude Bernard University Lyon 1)H-Index: 2
#2Faiza Nessark (Université de Sétif)H-Index: 1
Last. Abdelhamid Errachid (UCBL: Claude Bernard University Lyon 1)H-Index: 29
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Abstract Poly(pyrrole)-nanowires (PPy-NWs) were efficiently printed by using nano printing on flexible thermoplastics, and then used to device an impedimetric immunosensor. The present pioneering technology allow to create high sensitive and disponsable immunosensor devised using a low cost and simple fabrication. The innovative nanocontact printing uses a PDMS stamp replicated from a CD mold. The PPyNW printing uses controlled chemical polymerization to print PPy-NWs on poly (ethylene terephtha...
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#1Raquel Pruna (University of Barcelona)H-Index: 4
#2Francisco Palacio (University of Barcelona)H-Index: 5
Last. Manel López (University of Barcelona)H-Index: 14
view all 8 authors...
Abstract Miniaturizing potentiostats, keeping their cost low and yet preserving full measurement characteristics (e.g. bandwidth, determination of capacitive/inductive contribution to sensor's impedance and parallel screening) is still an unresolved challenge in bioelectronics. In this work, the combination of simple analogue circuitry together with powerful microcontrollers and a digital filter implementation is presented as an alternative to complex and incomplete architectures reported in the...
14 CitationsSource
#1Raquel PrunaH-Index: 4
#2Francisco PalacioH-Index: 5
Last. Manel LópezH-Index: 14
view all 6 authors...
The development of miniaturized potentiostats capable of measuring in a wide range of conditions and with full characteristics (e.g., wide bandwidth and capacitive/inductive contribution to sensor’s impedance) is still an unresolved challenge in bioelectronics. We present a simple analogue design coupled to a digital filter based on a lock-in amplifier as an alternative to complex architectures reported hitherto. A low-cost, miniaturized and fully integrated acquisition electronic system was dev...
1 CitationsSource
#1Raquel PrunaH-Index: 4
#2Francisco PalacioH-Index: 5
Last. Manel LópezH-Index: 14
view all 3 authors...
The need for miniaturized, low-cost and ultrasensitive electrochemical sensors has motivated the search and study of new nanostructured materials. We propose nanostructured indium tin oxide (ITO) electrodes as a promising platform due to their good electrical conductivity, transparency to visible wavelengths and high surface-to-volume ratio. The nanostructured electrodes were fabricated by electron beam evaporation, and electrochemical techniques were used to quantify more than a 40% increase in...
2 CitationsSource
#1Francisco PalacioH-Index: 5
Last. Santiago MarcoH-Index: 28
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Most of the battery powered systems with integrated sensors need low power consumption modes to enlarge the operation time. In the case of the fruit logistic chain, the fruit quality may be controlled by the detection of some gases as ethylene, acetaldehyde and ammonia, that are related to maturation, oxygen stress and refrigeration leakage. We report the integration of an ultra-low power (ULP) metal oxide (MOX) sensor array inside a Radio Frequency IDentification (RFID) 13.56 MHz ISO/IEC 15693 ...
Source
#1Raquel Pruna (University of Barcelona)H-Index: 4
#2Francisco Palacio (University of Barcelona)H-Index: 5
Last. Manel López (University of Barcelona)H-Index: 14
view all 7 authors...
Fabrication and organosilane-functionalization and characterization of nanostructured ITO electrodes are reported. Nanostructured ITO electrodes were obtained by electron beam evaporation, and a subsequent annealing treatment was selectively performed to modify their crystalline state. An increase in geometrical surface area in comparison with thin-film electrodes area was observed by atomic force microscopy, implying higher electroactive surface area for nanostructured ITO electrodes and thus h...
8 CitationsSource
#1Raquel PrunaH-Index: 4
#2Francisco PalacioH-Index: 5
Last. Manel LópezH-Index: 14
view all 7 authors...
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