Dinâmica Da Produção Silvicultural Em Municípios Da Microrregião De Três Lagoas, Mato Grosso Do Sul

Barros, João Henrique de Souza; Moraes, Paula Martin de; Carvalho, Cristiano Marcelo Espínola; Skowronski, Leandro; Marques, Heitor Romero; Constantino, Michel; Costa, Reginaldo Brito da

doi:10.29142/mosb5-9

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“…The selection of materials having desired functionalities can tune properties in LbL assemblies, such as superhydrophobicity [55], ionic permeability [56], electrical conductivity [57], etc. As an example, the incorporation of gold nanoparticles into LbL films composed by PANi and Na + MMT enabled the electrochemical detection of trace levels of cadmium, lead, and copper ions [9]. The inclusion of gold nanoparticles increased also the discrimination between skimmed, semiskimmed, and full-fat milk samples [58].…”

Section: Incorporation Of Nanoparticles By Physical Methodsmentioning

confidence: 99%

“…The inclusion of gold nanoparticles increased also the discrimination between skimmed, semiskimmed, and full-fat milk samples [58]. Although the deposition of nanoparticles between layers in LbL structures might increase both sensitivity and selectivity [9,58], it is not possible to control an adequate dispersion of them during the spontaneous adsorption process. Consequently, it precludes a better comprehension of the influence of nanoparticles on enhanced sensitivity and selectivity.…”

Section: Incorporation Of Nanoparticles By Physical Methodsmentioning

confidence: 99%

“…LbL films have also been employed in environmental monitoring, aiming the detection of water, air, or soil contamination. In 2017, Barros et al used Multilayered Nanostructures Integrated with Emerging Technologies DOI: http://dx.doi.org /10.5772/intechopen.89329 Square-Wave Anodic Stripping Voltammetry (SWASV) using indium tin oxide (ITO) electrodes functionalized with LbL films for the detection of trace levels of cadmium (Cd 2+ ), lead (Pb 2+ ), and copper (Cu 2+ ) [9]. The incorporation of AuNPs in LbL structures composed by emeraldine salt polyaniline (PANi-ES) and sodium montmorillonite clay mineral (Na + MMT) enhanced the electrocatalytic response of the sensors to heavy metal ions, achieving a lower detection limit (from mgL −1 to μgL −1 ).…”

Section: Introductionmentioning

confidence: 99%

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Multilayered Nanostructures Integrated with Emerging Technologies

Braunger¹,

Hensel²,

Gaál³

et al. 2020

Multilayer Thin Films - Versatile Applications for Materials Engineering

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Surface and interface functionalization are crucial steps to introduce new functionalities in numerous applications, as faster dynamics occur on surfaces rather than bulk. Within this context, the layer-by-layer (LbL) technique is a versatile methodology to controllably form organized nanostructures from the spontaneous adsorption of charged molecules. It enables the assembly of multilayered LbL films on virtually any surface using non-covalent molecular interactions, allowing the nanoengineering of interfaces and creation of multifunctional systems with distinct building blocks (polymers, clays, metal nanoparticles, enzymes, organic macromolecules, etc.). Several applications require thin films on electrodes for sensing/ biosensing, and here we explore LbL films deposited on interdigitated electrodes (IDEs) that were 3D-printed using the fusing deposition modeling (FDM) technique. IDEs covered with LbL films can be used to form multisensory systems employed in the analysis of complex liquids transforming raw data into specific patterns easily recognized by computational and statistical methods. We extend the FDM 3D-printing methodology to simplify the manufacturing of electrodes and microchannels, thus integrating an e-tongue system in a microfluidic device. Moreover, the continuous flow within microchannels contributes to faster and more accurate analysis, reducing the amount of sample, waste, and costs.

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