Surface modification of dental implants is a key process in the production these medical devices, and especially titanium used practice are commonly subjected to surface processes before their clinical use. A wide range treatments, such as sand blasting, acid etching, plasma spray deposition, sputtering deposition cathodic arc have been studied over years order improve performance implants. Improving or accelerating osseointegration usually main goal processes, but improvement...

A hybrid aerogel, composed of MoS2 sheets 1T (distorted octahedral) and 2H (trigonal prismatic) phases, finely mixed with few layers reduced graphene oxide (rGO) obtained by means a facile environment-friendly hydrothermal cosynthesis, is proposed as electrode material for supercapacitors. By electrochemical characterizations in three- two-electrode configurations symmetric planar devices, unique results have been obtained, specific capacitance values up to 416 F g-1 highly stable behavior...

Herein the concomitant synthesis of a MoS2- and Cu7S4-decorated graphene aerogel is reported. The material fully characterized used as an active to coat carbon fiber electrodes for fabrication fiber-shaped supercapacitor. device provides excellent capacitance values warranting stable performance even under high bending angle conditions. Moreover, photocurable resin selected smart packaging overcome stability problems usually affecting this class devices. It noteworthy that superior...

Metal-dielectric nanostructures consisting of Ag nanoparticles synthesized within a mesoporous silicon matrix are exploited for single molecule detection by surface-enhanced resonance Raman scattering (SERRS). The morphology is controlled yielding plasmonic resonances in the visible-near-infrared range. Enhanced activity substrates tested using Cy3 and R6G dyes as probe molecules. Tuning particle close to electronic resonance, we demonstrate enhancements larger than 1010. Time resolved...

Silver-coated porous silicon and polydimethylsiloxane (PDMS) are systematically analyzed as substrates for surface-enhanced Raman scattering (SERS). They were selected representative metal–dielectric nanostructures characterized by different morphology substrate dielectric constant which is reflected in the electromagnetic near-field intensity spectra. The study conducted using 4-mercaptobenzoic acid probe molecule with aim to compare efficiency homogeneity of signal on substrates. A larger...

An alternative route to plasmon-controlled fluorescence for improving the detection of is proposed. In place a metallic layer, suitable silicon-based one-dimensional photonic crystal used generate Bloch surface waves-coupled emission from thin polymeric layer decorated with fluorescent dye. Fluorescent radiation coupled waves strongly polarized and directional, an angular divergence 0.3° corresponding spectral bandwidth 3 nm. Within this range, overall signal enhancement factor larger than...

Ag nanoparticles synthesized on porous silicon samples were studied and applied as substrates for surface‐enhanced Raman scattering (SERS). The metallic nanostructures prepared by immersion plating characterized UV–Vis reflectance spectroscopy scanning electron microscopy. SERS activity of the was tested using Cyanine dye 1,3,3,1′,3′,3′‐esamethyl‐5,5′‐dimethoxyindodicarbocyanine iodide (Cy5‐OCH 3 ) a probe molecule. spectra obtained different excitation wavelengths indicate amplifications...

The surface of PDMS composites containing copper spiky particles was treated using atmospheric pressure plasma to optimize tension for PEDOT:PSS inkjet printed electrodes. Quantitative comparison based on image analysis done.

A novel SERS optofluidic sensor based on Ag-decorated TiO₂nanotubes has been developed for repeatable detection of organic molecules and biological assays.

A one-dimensional photonic crystal (1DPC) based on a planar stack of dielectric layers is used as an optical transducer for biosensing, upon the coupling TE-polarized Bloch Surface Waves (BSW). The structure tailored with polymeric layer providing chemical functionality facilitating covalent binding orienting proteins needed subsequent grafting antibodies in immunoassay detection scheme. impregnated Cy3 dye, such way that can exhibit emissive behavior. BSW-coupled fluorescence shift means...

The amount of hydrogen present in porous silicon (PS) nanostructures is analyzed detail. Concentration atomic chemically bound to the specific surface PS quantitatively evaluated by means attenuated total reflection infrared (ATR-IR) spectroscopy and temperature-programmed desorption (TPD) spectroscopy. concentration values are correlated nanoscale morphology. In particular, influence porosity, nanocrystallite dimension, shape on described. Hydrogen concentrations fresh, aged, as well...

We have developed a method for obtaining direct pattern of silver nanoparticles (NPs) on porous silicon (p-Si) by means inkjet printing (IjP) salt. Silver NPs were obtained p-Si mediated in-situ reduction Ag+ cations using solutions based AgNO3 which directly printed according to specific geometries and process parameters. The main difference with respect existing literature is that normally, applied (metal) NP suspensions, while in our experiment the are formed after jetting solution...

Inkjet printing technique is exploited for the synthesis of Ag nanoparticles (NPs) patterned on electrochemically etched silicon-based substrates. The nanostructure morphology, here analyzed by scanning electron microscopy, dictated ink composition and parameters. Under suitable excitation conditions, resonant surface-enhanced Raman scattering (SERS) performed such metal-dielectric nanostructures can approach single-molecule detection as recently demonstrated silvered porous silicon...

In this work, SERS-based microfluidic PDMS chips integrating silver-coated porous silicon membranes were used for the detection and quantitation of microRNAs (miRNAs), which consist short regulatory non-coding RNA sequences typically over- or under-expressed in connection with several diseases such as oncogenesis. detail, metal–dielectric nanostructures provide noticeable Raman enhancements functionalized according to a biological protocol, adapted optimized from an enzyme-linked...

A ZnO nanowires memristor switching between multiple resistance states. The conductivity of is tuned by changes in surface states that are induced at ZnO/polymer interfaces redox reactions guided an external bias.

The development of nanostructured metal-dielectric materials, suitable for biodetection based on surface plasmon resonance and enhanced Raman scattering (SERS), requires the refinement proper biological protocols their effective exploitation. In this work, immobilization DNA probes metal-dielectric/semiconductor substrates has been optimized, to develop a bioassay detection miRNA. To ensure broad relevance, proposed protocol was applied different silver-decorated functional supports: porous...

Emerging technologies, such as portable electronics, have had a huge impact on societal norms, access to real time information. To perform these tasks, electronic devices need more and accessories for the processing dispensation of data, resulting in higher demand energy power. overcome this problem, low cost high-performing flexible fiber shaped asymmetric supercapacitor was fabricated, exploiting 3D-spinel manganese oxide Mn3O4 cathode 2D molybdenum disulfide MoS2 anode. These...

An elastomeric microfluidic chip integrating SERS active silver-coated porous silicon membranes is developed, which performs label free and calibrated analysis in a multi-analyte configuration.