A5009302433- Advanced Sensor and Energy Harvesting Materials
- Conducting polymers and applications
- Electrocatalysts for Energy Conversion
- Biosensors and Analytical Detection
- Advanced battery technologies research
- Advanced biosensing and bioanalysis techniques
- Tactile and Sensory Interactions
- Nanocluster Synthesis and Applications
- Electrochemical Analysis and Applications
- Supercapacitor Materials and Fabrication
- Electrochemical sensors and biosensors
- Catalytic Processes in Materials Science
- Microfluidic and Capillary Electrophoresis Applications
- Fuel Cells and Related Materials
- Nanomaterials for catalytic reactions
- Innovative Microfluidic and Catalytic Techniques Innovation
- Advanced Photocatalysis Techniques
- Electrospun Nanofibers in Biomedical Applications
- Copper-based nanomaterials and applications
- Intelligent Tutoring Systems and Adaptive Learning
- DNA and Nucleic Acid Chemistry
- Robotics and Automated Systems
- Molecular Junctions and Nanostructures
- Tissue Engineering and Regenerative Medicine
- Neuroscience and Neural Engineering
University of Connecticut
2015-2023
Tanta University
2015-2022
London Rebuilding Society
2015-2018
Material (Belgium)
2018
A unique approach for the synthesis of nonstoichiometric, mesoporous molybdenum oxide (MoO 3– x ) with nanosized crystalline walls by using a soft template (PEO‐ b ‐PS) method is introduced. The as‐synthesized MoO very active and stable (durability > 12 h) electrochemical hydrogen evolution reaction (HER) under both acidic alkaline conditions. intrinsic 3 serves as an HER electrocatalyst without assistance carbon materials, noble metals, or MoS 2 materials. results from transmission...
Controlling active sites of metal‐free catalysts is an important strategy to enhance activity the oxygen evolution reaction (OER). Many attempts have been made develop catalysts, but lack understanding active‐sites at atomic‐level has slowed design highly and stable catalysts. A sequential two‐step dope sulfur into carbon nanotube–graphene nanolobes developed. This bidoping introduces sulfur–carbon active‐sites. Fluorescence emission K‐edge by X‐ray absorption near edge spectroscopy (XANES)...
We report a robust, universal "soft" nitriding method to grow in situ ligand-free ultrasmall noble metal nanocatalysts (UNMN; e.g., Au, Pd, and Pt) onto carbon. Using low-temperature urea pretreatment at 300 °C, soft enriches nitrogen-containing species on the surface of carbon supports enhances affinity precursors these supports. demonstrated sub-2-nm, UNMNs grown seven different types nitrided carbons with no organic ligands via chemical reduction or thermolysis. Ligand-free supported...
Inspired by the natural oxygen evolution reaction of Photosystem II, earth-abundant and inexpensive manganese oxides (MnOx) have been recognized for their great potential as highly efficient robust materials water oxidation (WORs). To date, most heterogeneous, synthesized MnOx catalysts still exhibit lower activities WORs, in comparison to RuO2 IrO2. Herein, we report a single-step scalable synthesis method mesoporous that is developed through soft-templated method. This allowed precise...
Abstract Advances in implantable bioelectronics for the nervous system are reinventing stimulation, inhibition, and sensing of neuronal activity. These efforts promise not just breakthrough treatments several neurological psychiatric conditions but also signal beginning a new era computer‐controlled human therapeutics. Batteries remain major power source all implanted electrical neuromodulation devices, which impairs miniaturization necessitates replacement surgery when battery is drained....
Understanding the origin of manganese oxide activity for oxygen reduction reaction (ORR) and evolution (OER) is a key step towards rationally designing highly active catalysts capable competing with widely used, state-of-art noble metal catalysts.
Nearly all implantable bioelectronics are powered by bulky batteries which limit device miniaturization and lifespan. Moreover, contain toxic materials electrolytes that can be dangerous if leakage occurs. Herein, an approach to fabricate protein‐based bioelectrochemical capacitors (bECs) employing new nanocomposite heterostructures in 2D reduced graphene oxide sheets interlayered with chemically modified mammalian proteins, while utilizing biological fluids as is described. This...
The MnO(100) facets with higher adsorption energy of O species can largely promote the electrocatalytic activity.
We report here the fabrication and validation of a novel 3D-printed, automated immunoarray to detect multiple proteins with ultralow detection limits. This low cost, miniature employs electrochemiluminescent (ECL) measured CCD camera touch-screen control micropump facilitate use. The miniaturized array features prefilled reservoirs deliver sample reagents paper-thin pyrolytic graphite microwell chip complete sandwich immunoassays. achieves high sensitivity by using single-wall carbon...
Abstract The development of wearable, all‐in‐one sensors that can simultaneously monitor several hazard conditions in a real‐time fashion imposes the emergent requirement for smart and stretchable avoidance sensing platform is skin‐like. Multifunctional with these features are problematic challenging to accomplish. In this context, multimodal ferrofluid‐based triboelectric nanogenerator (FO‐TENG), featuring capabilities variety stimulus such as strong magnetic field, noise level, falling or...
A facile approach to growing two-dimensional MnO<sub>2</sub> nanosheets on gold nanoparticles is reported.
Reactive oxygen species (ROS) oxidize guanosines in DNA to form 8-oxo-7,8-dihydro-2-deoxyguanosine (8-oxodG), a biomarker for oxidative stress. Herein we describe novel 64-microwell electrochemiluminescent (ECL) array enabling sensitive multiplexed detection of 8-oxodG ds-DNA without hydrolysis. Films Nafion and reduced graphene oxide containing ECL dye [Os(bpy)2(phen-benz-COOH)]2+ (OsNG, {bpy= 2,2'-bipyridine phen-benz-COOH = (4-(1,10-phenanthrolin-6-yl) benzoic acid)}) were assembled into...
Brain-implanted stimulators are revolutionizing treatment of many neurological and psychiatric diseases, but still rely on temporary batteries for power, which require periodic replacements. Battery-free, self-sustainable deep brain stimulation (DBS) devices remain an unsolved challenge. Herein, we report a self-sustainable, battery-free, intermittent DBS system. This device is enabled by interfacing high-performance bio-triboelectric nanogenerator (Bio-TENG) as energy harvester with...
A 3D-printed microfluidic array detects 2 proteins in 4 samples at very low cost with downloadable plans
Electrocatalytic properties of ligand-free gold nanoclusters (AuNCs, <2 nm) grown on nitrided carbon supports (denoted as AuNCs@N-C) were evaluated for the oxidation representative organic molecules including alcohols, an amine, and deoxyguanosine in oligonucleotides. AuNCs@N-C catalysts incorporated into films architecture {PDDA/AuNCs@N-C} n by using layer-by-layer assembly with oppositely charged poly(diallyldimethylammonium) (PDDA) pyrolytic graphite (PG) electrodes. Cyclic voltammetry...
A microfluidic electrochemical sensor array detects DNA oxidation and adduct formation for a fast genotoxicity chemistry screen test compounds.
A sequential two-step strategy is developed by Steven L. Suib and co-workers, in article number 1501966, to dope sulfur into carbon nanotube–graphene nanolobes (S,S'-CNT1000°C) control the active-sites of metal-free catalysts. This enhanced oxygen evolution reaction better than state-of-art allows S,S'-CNT1000°C be a potential-candidate for next-generation regenerative-fuel cells. Workers cover image are doping carbon-nanotubes with that creates (raw materials) factory.
Inexpensive disposable sensor platforms have the ability to revolutionize personalized cancer diagnostics. Monitoring levels of specific biomarker proteins in serum can provide further insight into a patient’s disease status enabling for physicians diagnose and treat patients on spot. Electrochemical sensors are among most popular point –of-care use due ease detection, low instrumentation cost, be miniaturized automated. A typical electrochemical cell consists counter, working, reference...