Cover Page August-2019-Advanced Materials Letters

Advanced Materials Letters

Volume 10, Issue 8, Pages 533-538, August 2019
About Cover

3D printing as the state-of-the-art emerging technology offers a platform for the new industrial horizons. The manufacturing process for creating 3D physical objects done via successive layer-by-layer deposition of materials such as metal, plastic, ceramics, or even living cells. The 3D printing concept was first proposed in the 1980s using stereolithography to make polymer objects. 3D technology could transform manufacturing, global product consumption and supply chains. The cover photo of July 2019 issue describes the structure of a 3D printed objects and to celebrate the 39th anniversary of its innovation.


Innovative Graphene-PDMS sensors for aerospace applications 

Filomena Piscitelli1,*, Gennaro Rollo2, Fabio Scherillo3, Marino Lavorgna2

1CIRA - Italian Aerospace Research Centre, via Maiorise, Capua, 81043, Italy

2Institute for Polymers, Composites and Biomaterials, National Research Council, Portici, 80055, Italy

3Department of Chemical, Materials and Production Engineering of the University of Naples Federico II, 8012, Naples, Italy

Adv. Mater. Lett., 2019, 10 (8), pp 533-538

DOI: 10.5185/amlett.2019.9903

Publication Date (Web): Feb 15, 2019

E-mail: f.piscitelli@cira.it

Abstract

For aerospace morphing and deployable applications, the use of PDMS-based sensors is crucial because they are characterized by easy application on large surfaces, light design, very large deformations, and durability in harsh environmental conditions. In this contest, the goal of the present work is to manufacture innovative, highly deformable, piezoresistive sensors, manufactured by using a simplified and scalable method for the applications on large-area, such as the airplane wings. To this end, an ad-hoc polymeric matrix was designed by crosslinking Polydimethylsiloxane (PDMS) oligomers OH terminated with siloxane domains, obtained from hydrolysis and condensation of tetraethyl orthosilicate (TEOS). In particular, the solution of siloxanes domains precursors contributes to lower the viscosity without any solvents and to create, after curing, a fine crosslinked system which could withstand high deformation. Nanocomposites with graphene (6 - 15 wt%) were prepared by dispersing the filler into the polymeric precursor by adopting both magnetic stirring and sonication. Regardless the dispersion method and the filler concentration, few-layers of graphene coexists with large aggregations, and the electrical conductivity and the Gauge Factor increase as the graphene content increases. It was found that the graphene filler tends to hinder the evaporation of solvents developed during the crosslinking reactions, generating porosity and enhancing conductivity. A better filler dispersion obtained through sonication reduces the conductivity. All nanocomposites show a good linear relationship between the strain and the relative electrical resistance change, since the non-linearity remains below the 5%, and quite no-drift can be observed in a wide operative range.  © VBRI Press.

Keywords

Graphene, PDMS, piezoresistive sensors, stretchable electronics.

Current Issue

Current Global Scenario of Electric Vehicles


Review on Detection of Phenol in Water 


Investigating the Machinability of Metallic Matrix Composites Reinforced by Carbon Nanotubes: A Review


Photocatalytic ZnO based PES Membranes for AOP Water Treatments under UV and Sunlight


Plasma Activated Water as a Source of Nitrogen for Algae Growth


Digital Light Processing (DLP) 3D Printing of Polyethylene Glycol (PEG) Biopolymer, Commercially available Ultra-High and Tough (UHT) Resin and Maghemite (γ-Fe2O3) Nanoparticles Mixture for Tissue Engineering Scaffold Application


Fabrication of Nanoparticle Embedded Polymeric Microbeads as an Efficient Drug Delivery System


Micro/Nanostructured Papers from Bagasse Pulp Reinforced by Nanofibrillated Cellulose from different Agro-Waste Sources


Structural, Optical and Magnetic Properties of Pristine, (Mn, Al) co-doped ZnO Nanocrystallites Synthesized via co-Precipitation Method


Nanosecond Laser Surface Patterning of Ti6Al4V Bio-alloy for Improved Biological Performance


Synthesis of Cu2O/Ag Composite Nanocubes with Promising Photoluminescence and Photodegradation Activity over Methylene Blue Dye


Locally available Clays of Bangladesh as a Replacement of imported Clays for Ceramic Industries 


Green Synthesis and Characterization of Silver Nanoparticles using Cassia auriculata Leaves Extract and Its Efficacy as A Potential Antibacterial and Cytotoxic Effect


Previous issues

Wearable Healthcare Devices

Nano-Graphene and Its Derivatives for Fabrication of Flexible Electronic Devices: A Quick Review

Natural Fibers as Viable Sources for the Development of Structural, Semi-Structural, and Technological Materials – A Review

Geometrical Characterization of Wire-and-Arc Additive Manufactured Steel Element

Plasma Activated Water Generation and its Application in Agriculture

Development of Advanced Electrode Materials on Porous Silicon for Micropower Formic Acid-Oxygen Fuel Cells 

Water Management within Tragacanth gum-g-polyitaconic Acid Hydrogels

Synthesis and Characterization of Humic Acid-coated Fe3O4 Nanoparticles for Methylene Blue Adsorption Activity

Synthesis and characterization of thermally stable flame retardant thermoplastic polyphosphazenes

Synthesis of Rod-coil Molecules bearing Oligo-Phenylene Vinylene Motifs: Effect of PEO Chain Lengths on the Evolution of Nanostructures Morphology and their Photophysical Properties

Dielectric Properties of Cu based Polymeric Composites in X-band of Microwave Frequency

Critical Association Concentration of Dansyl-Poly (acrylic acid) Synthetized by Redox Polymerization Followed by an Esterification in Aqueous Solution: Spectrophotometric and Tensiometric Studies

Influence of Iron Doping on Structural and Optical Properties of Nickel Oxide Nanoparticles

Upcoming Congress

Knowledge Experience at Sea TM