Konstantinos M. Paraskevopoulos

ORCID: 0000-0003-3189-9154
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Bone Tissue Engineering Materials
  • Dental Implant Techniques and Outcomes
  • Dental materials and restorations
  • Advanced Thermoelectric Materials and Devices
  • Chalcogenide Semiconductor Thin Films
  • Building materials and conservation
  • Cultural Heritage Materials Analysis
  • Conservation Techniques and Studies
  • Semiconductor materials and interfaces
  • Phase-change materials and chalcogenides
  • Thermal properties of materials
  • Solid-state spectroscopy and crystallography
  • Thermal and Kinetic Analysis
  • biodegradable polymer synthesis and properties
  • Facial Trauma and Fracture Management
  • Glass properties and applications
  • Thermal Expansion and Ionic Conductivity
  • Optical properties and cooling technologies in crystalline materials
  • Advanced Thermodynamics and Statistical Mechanics
  • Dental Erosion and Treatment
  • Polymer crystallization and properties
  • Mineralogy and Gemology Studies
  • Optical and Acousto-Optic Technologies
  • Gas Sensing Nanomaterials and Sensors
  • Polymer Nanocomposites and Properties

Aristotle University of Thessaloniki
2013-2023

Spark Therapeutics (United States)
2013

Powder Metallurgy Institute
2013

Telio (Norway)
2006-2012

University of Cyprus
2010

University of Pardubice
2010

Foundation for Research and Technology Hellas
2010

Hellenic Agency for Local Development and Local Government
2006-2010

Sofia University "St. Kliment Ohridski"
2010

Michigan State University
2004-2009

Abstract Various bionanocomposites were prepared by dispersing fumed silica (SiO 2 ) nanoparticles in biocompatible polymers like poly(vinyl pyrrolidone) (PVP), chitosan (Chi), or alcohol) (PVA). For the preparation, a solvent evaporation method was followed. SEM micrographs verified fine dispersion of all used polymer matrices composites with low content. Sufficient interactions between functional groups and surface hydroxyl SiO revealed FTIR measurements. These favored silica. Mechanical...

10.1002/app.28818 article EN Journal of Applied Polymer Science 2008-07-28

Recent advances in the field of thermoelectrics have shown embedding appropriate nanostructures can significantly suppress lattice thermal conductivity and therefore enhance ZT. Here we report a new class thermoelectric composites PbTe–PbSnS2. PbSnS2 is naturally layered material (space group Pnma) comprised Sn–Pb bilayers approximately 0.6 nm thickness. High resolution transmission electron microscopy reveals segregates into coherent lamellar structures 50–100 thickness that extend 100 to...

10.1039/c2ee22495j article EN Energy & Environmental Science 2012-01-01

We present a detailed study of the charge transport, optical reflectivity, and thermal transport properties n-type PbSe crystals. A strong scattering, mobility-limiting mechanism was revealed to be at play temperatures above 500 K. The is indicative complex electron-phonon interactions that cannot explained by conventional acoustical phonon scattering alone. applied first order non-parabolicity approximation extract density states effective mass as function doping both room temperature 700...

10.1103/physrevb.84.155207 article EN publisher-specific-oa Physical Review B 2011-10-18

Abstract Phase immiscibility in PbTe–based thermoelectric materials is an effective means of top‐down synthesis nanostructured composites exhibiting low lattice thermal conductivities. PbTe 1‐ x S can be synthesized as metastable solid solution alloys through rapid quenching. Subsequent post‐annealing induces phase separation at the nanometer scale, producing nanostructures that increase phonon scattering and reduce conductivity. However, there has yet to any study investigating detail local...

10.1002/adfm.201201944 article EN Advanced Functional Materials 2012-09-20

Natural K-feldspars from igneous rocks have been examined by means of X-ray powder diffraction(XRPD) and Fourier transform infrared (FTIR) spectroscopy in the spectral range 400-1400 cm-1,where Si-Al-O bonds exhibit dominant vibrations. From XRPD analysis three specieshave distinguished, i.e. microclines (3 samples), orthoclases (4 samples) sanidines samples);their unit cell parameters were calculated. The FTIR transmittance spectra all sampleshave common bands at 426, 463, 584, 604, 726 772...

10.12681/bgsg.11681 article EN Bulletin of the Geological Society of Greece 2017-07-31

Engineered electrospun membranes have emerged as promising materials in guided tissue regeneration, they provide an appropriate framework for the formation of new functional periodontal tissues. The development multifunctional local drug delivery systems with sustained release drugs prolonged infection control can be used surgical interventions to simultaneously prohibit epithelium downgrowth and ensure proper healing regeneration damaged aim present study was fabrication novel composite...

10.3390/nano12050850 article EN cc-by Nanomaterials 2022-03-02

The thermoelectric properties of materials with nominal compositions NaPb18−xSnxMTe20 (M = Sb, Bi) were investigated in the temperature range 300−650 K. All members have a cubic rock-salt (NaCl) type structure and exhibit p-type charge transport behavior between relative fraction Sn strongly affects physical, structural, materials. Independent nature pnicogen atom (M), electrical conductivity increases decreasing Pb:Sn ratio, whereas thermopower decreases. Hall effect data for selected...

10.1021/cm803519p article EN Chemistry of Materials 2009-03-24

The thermoelectric properties of PbSe have significantly improved in recent years reaching figures merit $ZT\ensuremath{\sim}1.6$. transport the hole-doped high temperature material are particularly interesting and play a key role this. Here, they were analyzed over wide hole concentration ranges. special features observed variation experimental Seebeck coefficient Hall can be accounted for within framework two-band model. Two valence bands separated by dependent energy offset considered....

10.1103/physrevb.91.085207 article EN publisher-specific-oa Physical Review B 2015-02-27

Ion doping has rendered mesoporous structures important materials in the field of tissue engineering, as apart from drug carriers, they can additionally serve regenerative materials. The purpose present study was synthesis, characterization and evaluation effect artemisinin (ART)-loaded cerium-doped calcium silicate nanopowders (NPs) on hemocompatibility cell proliferation human periodontal ligament fibroblasts (hPDLFs). Mesoporous NPs were synthesized a basic environment via surfactant...

10.3390/nano11092189 article EN cc-by Nanomaterials 2021-08-26
Coming Soon ...