A5013971872- Electrochemical sensors and biosensors
- Biosensors and Analytical Detection
- Conducting polymers and applications
- Advanced biosensing and bioanalysis techniques
- Analytical Chemistry and Sensors
- Electrochemical Analysis and Applications
- Advanced Sensor and Energy Harvesting Materials
- 2D Materials and Applications
- SARS-CoV-2 detection and testing
- Electrowetting and Microfluidic Technologies
- Advancements in Battery Materials
- Advanced Cellulose Research Studies
- MXene and MAX Phase Materials
- Advanced Chemical Sensor Technologies
- Advanced Materials and Mechanics
- Advanced Biosensing Techniques and Applications
- Polydiacetylene-based materials and applications
- Electrospun Nanofibers in Biomedical Applications
- Bamboo properties and applications
- Electrocatalysts for Energy Conversion
- Microfluidic and Capillary Electrophoresis Applications
- Analytical chemistry methods development
- Advanced battery technologies research
- Advanced Nanomaterials in Catalysis
- bioluminescence and chemiluminescence research
Brazilian Center for Research in Energy and Materials
2016-2024
Universidade Federal do ABC
2020-2024
Laboratório Nacional de Nanotecnologia
2016-2020
Pontifícia Universidade Católica de Campinas
2014-2020
Universidade Estadual de Campinas (UNICAMP)
2009-2016
National Institute of Standards and Technology
2012-2015
Laboratório Nacional de Ciência e Tecnologia do Bioetanol
2010-2015
Universidade Federal de Santa Catarina
2007-2008
In this work, we demonstrate the first example of fully printed carbon nanomaterials on paper with unique features, aiming fabrication functional electronic and electrochemical devices. Bare modified inks were prepared by combining black cellulose acetate to achieve high-performance conductive tracks low sheet resistance. The withstand extremely high folding cycles (>20 000 cycles), a new record-high response loss less than 10%. can also be used as 3D paper-based cells heterogeneous rate...
A simple and fast fabrication method to create high-performance pencil-drawn electrochemical sensors is reported for the first time. The sluggish electron transfer observed on bare surfaces was enhanced using two steps: oxidizing surface then reducing it in a subsequent step. heterogeneous rate constant found be 5.1 × 10-3 cm s-1, which highest value so far surfaces. We mapped origin of such performance by atomic force microscopy, X-ray photoelectron spectroscopy, Raman spectroscopy. Our...
Impedimetric wearable sensors are a promising strategy for determining the loss of water content (LWC) from leaves because they can afford on-site and nondestructive quantification cellular single measurement. Because is key marker leaf health, monitoring LWC lend insights into daily practice in precision agriculture, toxicity studies, development agricultural inputs. Ongoing challenges with this on-leaf adhesion, compatibility, scalability, reproducibility electrodes, especially when...
Abstract Multiplexing is a valuable strategy to boost throughput and improve clinical accuracy. Exploiting the vertical, meshed design of reproducible low‐cost ultra‐dense electrochemical chips, unprecedented single‐response multiplexing typical label‐free biosensors reported. Using cheap, handheld one‐channel workstation single redox probe, that is, ferro/ferricyanide, recognition events taking place on two spatially resolved locations same working electrode can be tracked along voltammetry...
This work presents a simple, low cost method for creating microelectrodes electrochemical paper-based analytical devices (ePADs). The were constructed by backfilling small holes made in polyester sheets using CO2 laser etching system. To make electrical connections, the working electrodes combined with silver screen-printed paper sandwich type two-electrode configuration. characterized linear sweep voltammetry, and results are good agreement theoretical predictions electrode size shape. As...
Limitations of the recognition elements in terms synthesis, cost, availability, and stability have impaired translation biosensors into practical use. Inspired by nature to mimic molecular anti-SARS-CoV-2 S protein antibody (AbS) binding site, we synthesized peptide sequence Asn-Asn-Ala-Thr-Asn-COOH (abbreviated as PEP2003) create COVID-19 screening label-free (LF) based on a carbon electrode, gold nanoparticles (AuNPs), electrochemical impedance spectroscopy. The PEP2003 is easily obtained...
<bold>Bamboo-based devices!</bold> A new method to fabricate silver conductive coatings into the inner walls of bamboo vascular bundles is disclosed. The hollow microchannels enabled development electrical and electrochemical devices.
We reported here for the first time that triboelectric charges on PET sheets can be used to seal and control flow rate in paper-based devices. The proposed method exhibits simplicity low cost, provides reversible sealing minimizes effect of sample evaporation.
The fabrication of three-dimensional (3D) polypyrrole conductive tracks through the porous structure paper is demonstrated by first time. We combined microfluidics and gas-phase pyrrole monomers to chemically synthesize polypyrrole-conducting channels embedded in-between cellulose fibers. By using this method, foldable structures can be created across whole structure, allowing electrical connection between both sides substrate. As a proof concept, top-channel-top (TCT) top-channel-bottom...
The sensing field has shed light on an urgent necessity for field-deployable, user-friendly, sensitive, and scalable platforms that are able to translate solutions into the real world. Here, we attempt meet these requests by addressing a simple, low-cost, fast electrochemical approach provide sensitive assays consist of dropping small volume (0.5 μL) off-the-shelf alcohols pyrolyzed paper-based electrodes before adding sample (150 μL). This method was applied in detection phosphate after...
Electrochemical detection in complex biofluids is a long-standing challenge as electrode biofouling hampers its sensing performance and commercial translation. To overcome this drawback, pyrolyzed paper porous coupled with the drop casting of an off-the-shelf polysorbate, that is, Tween 20 (T20), described here by taking advantage situ formation hydrophilic nanocoating (2 nm layer T20). The latter prevents while providing capillarity samples through pores, leveraging redox reactions across...
Supported and free-standing MoS 2 monolayers were patterned using a focused ion beam to tune their electrocatalytic activity toward H production. Defects can either be confined near the etched interfaces or spread depending on applied dose.
Abstract This work presents an in situ route to electrochemically prepare oxidized carbon surface from glassy electrodes (GCEs), which generates a material with similar electrochemical response as graphene oxide. The proposed is fast, simple, environmentally friendly and consists applying potential of +1.8 V vs. SCE GCE. electrode (GCE OS ) its subsequent reduction ERS can be accomplished easily efficiently by techniques. GCE were characterized electrochemical, spectroscopic microscopy...