Flexible screen-printed electrodes (SPE) were modified in a simple manner with different composite nanomaterials based on carbon allotropes, polymers, and metallic nanoparticles, for amperometric detection of nitrites soil. Multiwalled nanotubes (MWCNT), chitosan (CS), silver nanoparticles (AgNPs), 1,8-diaminonaphthalene (1,8-DAN), sol-gel (SG) matrix used modification the paste working electro...

Abstract. Structural health monitoring has proven to be a dependable source for ensuring the integrity of structure. It also aids in detecting and estimating progression cracks loss structural performance. The most compelling components system are sensing material sensor technology. In systems, fiber optic sensors, strain gauges, temperature shape memory alloys, other types sensors commonly use...

A non-contact and low-cost nanomaterial based fiber-optic sensor is developed for measuring large values of electric currents. The magnetic field, generated by the electric current, changes the refractive index of a liquid in which nanomaterial particles are suspended. The change of refractive index is converted to a change in the intensity of light transmitted in an evanescent field based fibe...

Graphene, whose discovery won the 2010 Nobel Prize in physics, has been a shining star in the material science in the past few years. Graphene is a nanomaterial comprising of single atomic layer of sp2-bonded carbon atoms tightly packed in a two dimensional (2D) honeycomb lattice. Owing to its interesting electrical, optical, mechanical and chemical properties, graphene has found potential appl...

Recent progress in an emerging area of designing aptamer and nanomaterial conjugates as molecular diagnostic and drug delivery agents in biomedical applications is summarized. Aptamers specific for a wide range of targets are first introduced and compared to antibodies. Methods of integrating these aptamers with a variety of nanomaterials, such as gold nanoparticles, quantum dots, carbon nanotu...

The mechanism of carbon nanomaterial formation at moderate temperatures while processing fresh-reduced iron by products of air conversion of natural gas is considered. It is shown that under given conditions, the size and the shape of the resulting carbon are dependent on the temperature and the size of microscopic iron grains formed during reduction. These iron grains are the catalyzer of the ...