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A current evolution of nanobiosensors stresses the interest of multi-material nanopatterned surfaces, for enhancing sensing performances. Besides, titanium tungsten (TiW) is a material routinely implemented in nanoelectronic devices, in a reproducible way and at industrial production scales. Such material may be envisioned for being used in (bio)chemical nanoelectronic sensors, but the surface functionalization of such material has still to be studied. In the present article, orthogonal chemical functionalization of patterned Au on titanium tungsten (TiW) substrates have been explored for the first time to our knowledge. Surface functionalizations were assessed by X-ray photoelectron spectroscopy (XPS), polarization modulation infrared reflection-absorption spectroscopy (PMIRRAS) and time-of-flight secondary ion mass spectrometry (ToF-SIMS) imaging. Au/TiW patterned substrates were functionalized with mercapto-undecamine. Thanks to the orthogonality of thiol/Au versus phosphonic acid/TiW reactions, only Au features were modified leading to the amine derivatized surface. It allowed localizing carboxy-functionalized nanoparticles by electrostatic interaction on Au with a selectivity above 10 compared to TiW.
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A base-mediated protocol that allows for the site-selective sp2 C-H silylation of azines is described. This method is distinguished by its mild conditions, simplicity and excel-lent site-selective mod...
Chemical functionalization of graphene is one method pursued to engineer new properties into a graphene sheet. Graphene oxide is the most commonly used chemical derivative of graphene. Here we present...
This paper describes a photochemical approach for independently patterning multiple proteins to an inert substrate, particularly for studies of cell adhesion. A photoactivatable chloropyrimidine ligan...
Direct functionalization of CH bond is rapidly becoming an indispensible tool in chemical synthesis. However, due to the ubiquity of CH bonds, achieving site-selective functionalization remains an ard...
The controlled assembly of metal nanoparticles into ordered structures interacting with biological molecules is an emerging concept in surface science. Here, bare magnetite nanoparticles (Fe3O4-NPs) w...
Silver nanoparticles are one of most nanoparticles use nowadays in the research area because it has specific physical and chemical properties, in medical fields silver nanoparticles can in...
The present study will investigate the impact of altered substrate availability on muscle atrophy, insulin sensitivity and muscle protein synthesis following short-term forearm immobilizat...
The purpose of this study is to determine whether oral topic silver nanoparticles are effective to reduce potential pathogen microbial loads in mechanical ventilation patients.
The purpose of the study is to investigate the benefits of the Patterned Neuromuscular Electrical Stimulation (PENS) for the treatment of osteoarthritis. The rationale for this investigat...
Improved management of giant congenital diaphragmatic hernias (CDH) in neonates : decreased risk of morbidity and mortality due to prosthesis release. CDH is a rare disease with a still ve...
Proteins that are chemically bound to a substrate material which renders their location fixed. The immobilization of proteins allows their use in chemical reactions without being diluted by solvent.
Nanometer-sized particles that are nanoscale in three dimensions. They include nanocrystaline materials; NANOCAPSULES; METAL NANOPARTICLES; DENDRIMERS, and QUANTUM DOTS. The uses of nanoparticles include DRUG DELIVERY SYSTEMS and cancer targeting and imaging.
Nanoparticles produced from metals whose uses include biosensors, optics, and catalysts. In biomedical applications the particles frequently involve the noble metals, especially gold and silver.
A layer of protein coating adsorbed by NANOPARTICLES upon entry into PLASMA or other protein-containing biological fluids, which affects how nanoparticles are internalized by cells and cleared from the body.
A set of opposing, nonequilibrium reactions catalyzed by different enzymes which act simultaneously, with at least one of the reactions driven by ATP hydrolysis. The results of the cycle are that ATP energy is depleted, heat is produced and no net substrate-to-product conversion is achieved. Examples of substrate cycling are cycling of gluconeogenesis and glycolysis pathways and cycling of the triglycerides and fatty acid pathways. Rates of substrate cycling may be increased many-fold in association with hypermetabolic states resulting from severe burns, cold exposure, hyperthyroidism, or acute exercise.
Radiology is the branch of medicine that studies imaging of the body; X-ray (basic, angiography, barium swallows), ultrasound, MRI, CT and PET. These imaging techniques can be used to diagnose, but also to treat a range of conditions, by allowing visuali...