Panagiotis Karagiannidis

ORCID: 0000-0002-2709-4161
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Research Areas
  • Conducting polymers and applications
  • Organic Electronics and Photovoltaics
  • Additive Manufacturing and 3D Printing Technologies
  • Advanced Sensor and Energy Harvesting Materials
  • Force Microscopy Techniques and Applications
  • Polymer Nanocomposites and Properties
  • Synthesis and properties of polymers
  • Polymer Nanocomposite Synthesis and Irradiation
  • Epoxy Resin Curing Processes
  • Graphene research and applications
  • Thin-Film Transistor Technologies
  • Semiconductor materials and interfaces
  • Electrospun Nanofibers in Biomedical Applications
  • Tribology and Wear Analysis
  • Nanowire Synthesis and Applications
  • Carbon Nanotubes in Composites
  • Bone Tissue Engineering Materials
  • Fiber-reinforced polymer composites
  • Sustainable Supply Chain Management
  • Analytical Chemistry and Sensors
  • Polymer Surface Interaction Studies
  • Photopolymerization techniques and applications
  • Nanofabrication and Lithography Techniques
  • Molecular Junctions and Nanostructures
  • biodegradable polymer synthesis and properties

University of Sunderland
2019-2025

Srinakharinwirot University
2022

Chulalongkorn University
2022

University of Cambridge
2016-2020

London Metropolitan University
2017

Aristotle University of Thessaloniki
2008-2016

Hellenic Agency for Local Development and Local Government
2014

We report the exfoliation of graphite in aqueous solutions under high shear rate [$\sim10^8s^{-1}$] turbulent flow conditions, with a 100\% yield. The material is stabilized without centrifugation at concentrations up to 100 g/L using carboxymethylcellulose sodium salt formulate conductive printable inks. sheet resistance blade coated films below$\sim2Ω/\square$. This simple and scalable production route for graphene-based inks large area printing flexible electronics.

10.1021/acsnano.6b07735 article EN cc-by ACS Nano 2017-01-20

Abstract Saturable absorbers (SA) operating at terahertz (THz) frequencies can open new frontiers in the development of passively mode-locked THz micro-sources. Here we report fabrication SAs by transfer coating and inkjet printing single few-layer graphene films prepared liquid phase exfoliation graphite. Open-aperture z -scan measurements with a 3.5 quantum cascade laser show transparency modulation ∼80%, almost one order magnitude larger than that reported to date frequencies....

10.1038/ncomms15763 article EN cc-by Nature Communications 2017-06-15

The composite coating can effectively inhibit bacterial proliferation and promote the expression of bone-building genes in-vitro. Therefore, a novel production was used to produce poly-ether-ether-ketone, reduced graphene oxide (PEEK-rGO) scaffolds with ratios 1-3%, combining different lattice for bone implant. An inexpensive method developed prepare new coatings on PEEK scaffold (rGO). Mechanical testing, data analysis cell culture tests in-vitro biocompatibility characterisation were...

10.1016/j.colsurfb.2022.112583 article EN cc-by Colloids and Surfaces B Biointerfaces 2022-05-17

The study describes a homogenisation technique of developing Polyether ether ketone (PEEK) and calcium hydroxyapatite (cHAp) composite with periodic pattern lattice structures. continuum depiction the discrete structures was evaluated to retain PEEK cellulose properties cell applied dental implants. Design approaches were considered, using different software modelling optimise orthotropic material by establishing an optimal variable density distribution in geometric model implant. A...

10.1016/j.matchemphys.2022.126454 article EN cc-by Materials Chemistry and Physics 2022-06-30

The objective of this research is to develop a high tear strength suture pads from polydimethylsiloxane (PDMS) composite reinforced with degummed silk fibers (DSFs) as artificial hand skin for suturing practice. influences fiber diameters, lengths, and contents DSFs on mechanical properties the prepared PDMS/DSFs composites were systematically investigated. In preparation, PDMS resin silicone oil mixed, followed by gradual addition continuous stirring. uncured mixture was then cast in molds...

10.1177/07316844251326961 article EN Journal of Reinforced Plastics and Composites 2025-03-13

The performance of polymer–fullerene bulk heterojunction (BHJ) solar cells is strongly dependent on the vertical distribution donor and acceptor regions within BHJ layer. In this work, we investigate in detail effect hole transport layer (HTL) physical properties thermal annealing morphology cell performance. For purpose, have prepared with four distinct formulations poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS) buffer layers. samples were subjected to annealing,...

10.1039/c2jm31277h article EN Journal of Materials Chemistry 2012-01-01

Objective and methods: In this study, novel nanomaterials made of amorphous carbon, CNTs, titanium diboride, TiBN were grown by vacuum deposition techniques to assess their role as potential stent coatings. Platelet response towards the nanostructured surfaces samples was analyzed in line with physicochemical properties. As skeleton is formed mainly stainless steel, material used reference material. adhesion studies carried out atomic force microscopy scanning electron observations. A cell...

10.2147/ijn.s34320 article EN cc-by-nc International Journal of Nanomedicine 2012-12-01

In this work, different graphene-related materials (GRMs) and polyamide-6 (PA6) were melt compounded by twin screw extrusion. The GRMs prepared graphene nanoplatelets (GNPs), oxide (GO), reduced (rGO) silane functionalised (f-rGO). had comparable lateral size (20–30 ​μm), but thickness surface chemistry which resulted in behaviour processing of flow, maximum loading the PA6 matrix (15%wt for GNPs, 10%wt GO, 2%wt rGO 2.5%wt f-rGO) as well mechanical properties. A second extrusion phase...

10.1016/j.rinma.2020.100105 article EN cc-by-nc-nd Results in Materials 2020-05-25

Graft copolymers, deproteinized natural rubber-graft-polystyrene (DPNR-g-PS) and rubber-graft-polyacrylonitrile (DPNR-g-PAN), were prepared by the grafting of styrene (St) or acrylonitrile (AN) monomers onto DPNR latex via emulsion copolymerization. Then, ultrafine fully vulcanized powdered rubbers (UFPNRs) produced electron beam irradiation graft copolymers in presence di-trimethylolpropane tetra-acrylate (DTMPTA) as a crosslinking agent and, subsequently, fast spray drying process. The...

10.3390/polym13193447 article EN Polymers 2021-10-08

Non-isotropic solvent evaporation method is herein introduced for the formation of uniaxially-oriented crystalline TIPS-Pentacene films, towards realization high performance field-effect transistors.

10.1039/c4ra02300e article EN cc-by-nc RSC Advances 2014-01-01

In this work, shape memory polymers (SMPs) were developed from a combination of bio-based benzoxazine (BZ) monomer and polyurethane prepolymer (PU-prepolymer), both derived raw materials. The BZ (V-fa monomer) was synthesized through Mannich condensation reaction using vanillin, paraformaldehyde, furfurylamine. PU-prepolymer obtained by reacting palm oil polyol (MW = 1400 Da) toluene diisocyanate (TDI). To investigate the curing behavior poly(V-fa/urethane), with mass ratio 50/50,...

10.1039/d3na00647f article EN cc-by-nc Nanoscale Advances 2023-12-18
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