Melisa del Barrio
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View article: Micrometer-sized integrated plasmonic–electroacoustic hybrid transducer for biosensing applications
Micrometer-sized integrated plasmonic–electroacoustic hybrid transducer for biosensing applications Open
This paper presents the development of an on-chip, micrometer-sized, dual-mode transducing device for biosensing applications. The device integrates two distinct transducing mechanisms: plasmonic transduction based on Au nanoparticles and …
View article: High-Surface-Sensitive Self-Referenced Plasmonic Sensor Based on Au Nanoislands
High-Surface-Sensitive Self-Referenced Plasmonic Sensor Based on Au Nanoislands Open
We present a self-referenced plasmonic sensor with a high surface sensitivity based on Au nanoislands synthesized by thermal dewetting on a planar SiO 2 /metal bilayer deposited on a Si chip. The optical device displays two spectral featur…
View article: Electroenzymatic N2 reduction to ammonia by nitrogenase from Azotobacter vinelandii immobilized on low density graphite electrodes under direct electron transfer regime
Electroenzymatic N2 reduction to ammonia by nitrogenase from Azotobacter vinelandii immobilized on low density graphite electrodes under direct electron transfer regime Open
View article: Free PCR virus detection via few-layer bismuthene and tetrahedral DNA nanostructured assemblies
Free PCR virus detection via few-layer bismuthene and tetrahedral DNA nanostructured assemblies Open
View article: A Chimeric NiFe Hydrogenase Heterodimer to Assess the Role of the Electron Transfer Chain in Tuning the Enzyme’s Catalytic Bias and Oxygen Tolerance
A Chimeric NiFe Hydrogenase Heterodimer to Assess the Role of the Electron Transfer Chain in Tuning the Enzyme’s Catalytic Bias and Oxygen Tolerance Open
International audience
View article: Photobio-electrocatalytic production of H2 using fluorine-doped tin oxide (FTO) electrodes covered with a NiO-In2S3 p-n junction and NiFeSe hydrogenase
Photobio-electrocatalytic production of H2 using fluorine-doped tin oxide (FTO) electrodes covered with a NiO-In2S3 p-n junction and NiFeSe hydrogenase Open
Clean energy vectors are needed towards a fossil fuel-free society, diminishing both greenhouse effect and pollution. Electrochemical water splitting is a clean route to obtain green hydrogen, the cleanest fuel; although efficient electroc…
View article: Carbon nanodots modified-electrode for peroxide-free cholesterol biosensing and biofuel cell design
Carbon nanodots modified-electrode for peroxide-free cholesterol biosensing and biofuel cell design Open
View article: Carbon Nanodots Modified-Electrode for Peroxide-Free Cholesterol Biosensing and Biofuel Cell Design
Carbon Nanodots Modified-Electrode for Peroxide-Free Cholesterol Biosensing and Biofuel Cell Design Open
View article: Photoelectrocatalytic detection of NADH on n-type silicon semiconductors facilitated by carbon nanotube fibers
Photoelectrocatalytic detection of NADH on n-type silicon semiconductors facilitated by carbon nanotube fibers Open
NADH is a key biomolecule involved in many biocatalytic processes as cofactor\nand its quantification can be correlated to specific enzymatic activity. Many\nefforts have been taken to obtain clean electrochemical signals related to NADH\n…
View article: Enhancement of Biosensors by Implementing Photoelectrochemical Processes
Enhancement of Biosensors by Implementing Photoelectrochemical Processes Open
Research on biosensors is growing in relevance, taking benefit from groundbreaking knowledge that allows for new biosensing strategies. Electrochemical biosensors can benefit from research on semiconducting materials for energy application…
View article: A Hydrophilic Channel Is Involved in Oxidative Inactivation of a [NiFeSe] Hydrogenase
A Hydrophilic Channel Is Involved in Oxidative Inactivation of a [NiFeSe] Hydrogenase Open
Hydrogenases are metalloenzymes that catalyze the redox conversion between H2 and protons. The so-called [NiFeSe] hydrogenases are highly active for both H2 production and oxidation, but like all hydrogenases, they are inhibited by O2. In …
View article: Redox (In)activations of Metalloenzymes: A Protein Film Voltammetry Approach
Redox (In)activations of Metalloenzymes: A Protein Film Voltammetry Approach Open
Redox metalloenzymes are omnipresent in living organisms where they catalyze key cellular reactions with great efficiency. These enzymes can often be reversibly placed into inactive states following changes in redox conditions. This is a h…
View article: Valine-to-Cysteine Mutation Further Increases the Oxygen Tolerance of <i>Escherichia coli</i> NiFe Hydrogenase Hyd-1
Valine-to-Cysteine Mutation Further Increases the Oxygen Tolerance of <i>Escherichia coli</i> NiFe Hydrogenase Hyd-1 Open
International audience
View article: Ascorbate Oxidation by Cu(Amyloid-β) Complexes: Determination of the Intrinsic Rate as a Function of Alterations in the Peptide Sequence Revealing Key Residues for Reactive Oxygen Species Production
Ascorbate Oxidation by Cu(Amyloid-β) Complexes: Determination of the Intrinsic Rate as a Function of Alterations in the Peptide Sequence Revealing Key Residues for Reactive Oxygen Species Production Open
Along with aggregation of the amyloid-β (Aβ) peptide and subsequent deposit of amyloid plaques, oxidative stress is an important feature in Alzheimer's disease. Cu bound to Aβ is able to produce reactive oxygen species (ROS) by the success…
View article: Engineering an [FeFe]-Hydrogenase: Do Accessory Clusters Influence O<sub>2</sub> Resistance and Catalytic Bias?
Engineering an [FeFe]-Hydrogenase: Do Accessory Clusters Influence O<sub>2</sub> Resistance and Catalytic Bias? Open
[FeFe]-hydrogenases, HydAs, are unique biocatalysts for proton reduction to H2. However, they suffer from a number of drawbacks for biotechnological applications: size, number and diversity of metal cofactors, oxygen sensitivity…
View article: Interaction of the H-Cluster of FeFe Hydrogenase with Halides
Interaction of the H-Cluster of FeFe Hydrogenase with Halides Open
FeFe hydrogenases catalyze H2 oxidation and production using an "H-cluster", where two Fe ions are bound by an aza-dithiolate (adt) ligand. Various hypotheses have been proposed (by us and others) to explain that the enzyme reve…
View article: Electrochemical Investigations of Hydrogenases and Other Enzymes That Produce and Use Solar Fuels
Electrochemical Investigations of Hydrogenases and Other Enzymes That Produce and Use Solar Fuels Open
Many enzymes that produce or transform small molecules such as O2, H2, and CO2 embed inorganic cofactors based on transition metals. Their active site, where the chemical reaction occurs, is buried in and p…
View article: New perspectives in hydrogenase direct electrochemistry
New perspectives in hydrogenase direct electrochemistry Open
View article: Metal-binding to Amyloid-β Peptide: Coordination, Aggregation and Reactive Oxygen Species Production
Metal-binding to Amyloid-β Peptide: Coordination, Aggregation and Reactive Oxygen Species Production Open
View article: A reagentless enzymatic fluorescent biosensor for glucose based on upconverting glasses, as excitation source, and chemically modified glucose oxidase
A reagentless enzymatic fluorescent biosensor for glucose based on upconverting glasses, as excitation source, and chemically modified glucose oxidase Open