A5085830773- Electrochemical sensors and biosensors
- Electrochemical Analysis and Applications
- Advanced biosensing and bioanalysis techniques
- Micro and Nano Robotics
- Electrocatalysts for Energy Conversion
- Molecular Communication and Nanonetworks
- Conducting polymers and applications
- Nanoparticle-Based Drug Delivery
- Mineral Processing and Grinding
- Graphene and Nanomaterials Applications
- Nanoplatforms for cancer theranostics
- Graphene research and applications
- Second Language Learning and Teaching
- Mechanical and Optical Resonators
- Fuel Cells and Related Materials
- Nanopore and Nanochannel Transport Studies
- Nanoparticles: synthesis and applications
- International Student and Expatriate Challenges
- Orbital Angular Momentum in Optics
- Microfluidic and Bio-sensing Technologies
- Social Issues and Policies in Latin America
- Arsenic contamination and mitigation
- Manufacturing Process and Optimization
- Mercury impact and mitigation studies
- Selenium in Biological Systems
University of Talca
2023-2025
University of Chile
2015-2024
Advanced Center for Chronic Diseases
2017-2024
Redox (Norway)
2021
University of California, San Diego
2016
Universidad de Santiago de Chile
2012
Universidad Bernardo O'Higgins
2012
An effective intracellular gene silencing strategy based on acoustically propelled nanowires modified with an interfering RNA's (siRNA) payload is described. The gold (AuNW) are wrapped a Rolling Circle Amplification (RCA) DNA strand, which serves to anchor the siRNA therapy. ultrasound (US)-powered propulsion of AuNW leads fast internalization and rapid movement hence accelerated delivery response. To optimize micromotor procedure, influence motion, time, dosage was investigated, leading up...
An aptamer-based catalytic micromotor sensing strategy for "Off-On" real-time fluorescent detection of the ricin B toxin is described. This approach relies on self-propelled reduced graphene-oxide (rGO)/platinum (Pt) micromotors, modified with a specific aptamer tagged fluorescein-amidine (FAM) dye, whose fluorescence quenched due to π–π interactions rGO surface. The continuous movement motor in sample accelerates binding aptamer–dye conjugate and leads "On" detection. Coupling switching...
For the first time a critical analysis of influence that four different graphene oxide reduction methods have on electrochemical properties resulting reduced oxides (RGOs) is reported. Starting from same oxide, chemical (CRGO), hydrothermal (hTRGO), (ERGO), and thermal (TRGO) were produced. The materials fully characterized topography electroactivity glassy carbon modified electrodes also evaluated. An oligonucleotide molecule was used as model DNA biosensing. results allow for conclusion...
In this paper we compare the catalytic activitites of untouched metal macrocyclic and pyrolyzed catalysts for ORR in acid versusthe formal potential catalyst find general that reported literature exhibiting more positive formalpotentials are active ORR. These trends observed could serve as a hint development non-precious metalcatalysts fuel cells.©2012 The Electrochemical Society. [DOI: 10.1149/2.032206esl] All rights reserved.Manuscript submitted January 16, 2012; revised manuscript received...
The electrooxidation in a pH 11 carbonate/hydrogen carbonate buffer of an aromatic (benzyl alcohol (BA)) and several aliphatic alcohols on massive gold gold/quartz electrodes has been studied by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) quartz crystal microbalance (EQCM). activity is high for BA, lower ethylene glycol (EG), very low propanol butanol. Based the fact that double-layer capacity with BA about one third alcohols, which points to expulsion water from Au...
Core–shell micro/nanomotors have garnered significant interest in biomedicine owing to their versatile task-performing capabilities. However, effectiveness for photothermal therapy (PTT) still faces challenges because of poor tumor accumulation, lower light-to-heat conversion, and due the limited penetration near-infrared (NIR) light. In this study, we present a novel core–shell micromotor that combines magnetic properties. It is synthesized via template-assisted electrodeposition iron (Fe)...
The electrooxidation in a pH 11 carbonate/hydrogen carbonate buffer electrolyte of benzyl alcohol (BA) and several primary secondary aliphatic alcohols on polyNiTSPc- Ni(OH)2-modified glassy-carbon (GC) gold electrodes was studied by cyclic voltammetry (CV) with an electrochemical quartz crystal microbalance (EQCM). films were formed repetitive Ni(II)tetrasulphophthalocyanine (NiTSPc) nickel(II) nitrate solutions, respectively. Although previous XPS results indicated very similar environment...
Abstract A novel and useful method to catalyze the electro‐oxidation of nicotinamide adenine dinucleotide (NADH) over a glassy carbon electrode (GCE) modified with graphene oxide (GO) is presented. Based on presence oxygen moieties in GO, which can be easily reduced, an situ electrochemical generation reduced (denoted as erGO) applying sufficient negative potential. potential −1.000 V was selected generate erGO/GCE pretreatment before detection NADH. The generated system produces decrease...