/ Keynotes

KEYNOTE SPEAKERS

 
Sabu Thomas Dominique Baillis Mahi R. Singh Javid Safarov Vlastimil Boháč Alpaslan Turgut
Mahatma Gandhi University INSA de Lyon Western University University of Rostock Institute of Physics, Slovak Academy of Sciences Dokuz Eylül University
INDIA FRANCE CANADA GERMANY SLOVAKIA TURKEY



Name Dominique Baillis
Affiliation INSA de Lyon
Homepage http://lamcos.insa-lyon.fr/front/fiche_pers.php?L=2&Numpers=852
Title Thermal properties of cellular materials
Abstract
Biographical Sketch


Name Mahi R. Singh
Affiliation Western University
Homepage http://physics.uwo.ca/~msingh/
Title Thermal and pressure sensing mechanism in graphene nanocomposite deposited on polar crystals.
Abstract In recent times there has been a focus to develop sensors using nano-hybrid system [1-3]. This paper presents a light matter interaction in a hybrid system composed of quantum dots (QD), metallic graphene flake (MGF) and a polar material (PM), such as SiO2. Such systems are fabricated by depositing QDs and MGF on a PM substrate, which are denoted as QD-MGF-PM. These systems have the luxury of having both phonon plasmon polaritons (PPPs) and surface plasmon polaritons (SPPs). Optical phonons in the PM couple with surface plasmons of the MGF which in turn produces PPPs and similarly photons couple with surface plasmons of MGF to form SPPs. We consider that the excitons in the QD interact with the PPPs and the SPPs of the hybrid system. The interaction between excitons and SPPs is called dipole-dipole interaction. Using Maxwell’s equations in the quasi-static approximation the polarizability of the MGF is calculated. From the polarizability SPPs are determined. In the presence of exciton-PPPs and exciton-SPPs couplings we are able to calculate the absorption and emission peaks of the QD using the density matrix method [4]. For this hybrid system we performed numerical simulations. We have found that when PPP and SPP energies are not in resonant with the first and second exciton energies of the QD, respectively, the absorption two peaks lie in the THZ range. With both exciton-PPPs and exciton-SPPs couplings a suppression of the energy transfer between the two systems is seen, which is indicated by a decrease in the two peaks. The suppression is due to the transfer of exciton energy from the QD to the SPP and PPP energies in the MGF. The energy transfer can be controlled by applying temperature and premature gradients. These findings can lead to the fabrication of temperature and pressure sensors in the THz range.
Biographical Sketch


Name Sabu Thomas
Affiliation Mahatma Gandhi University
Homepage
Title Engineering at the Nanoscale: A Strategy for Developing High Performance Functional Materials
Abstract The talk will concentrate on various approaches being used to engineer materials at the nanoscale for various applications in future technologies. In particular, the case of clay, carbon nanostructures (e.g. nanotubes, graphene), metal oxides, bionanomaterials (cellulose, starch and chitin) will be used to highlight the challenges and progress. Several polymer systems will be considered such as rubbers, thermoplastics, thermoetts and their blends for the fabrication of functional polymer nanocomposites. The interfacial activity of nanomaterials in compatibilising binary polymer blends will also be discussed. Various self assembled architectures of hybrid nanostructures can be made using relatively simple processes. Some of these structures offer excellent opportunity to probe novel nanoscale behavior and can impart unusual macroscopic end properties. I will talk about various applications of these materials, taking into account their multifunctional properties. Some of the promising applications of clay, metal oxides, nano cellulose, chitin, carbon nanomaterials and their hybrids will be reviewed. Finally the effect of dewetting up on solvent rinsing on nano scale thin films will also be discussed.
Biographical Sketch


 

Name Javid Safarov
Affiliation University of Rostock
Homepage http://www.ltt.uni-rostock.de/en/staff/dr-ing-javid-safarov/
Title Thermophysical properties of ionic liquid + methanol solutions
Abstract
Biographical Sketch Dr. Javid Safarov was born on 10 December 1965 in Urkmezli village of Qazax region of Azerbaijan. He graduated from the Azerbaijan Technical University with honours and began to work at the department of “Heat and Refrigeration Techniques” of this university. He worked on 2005-2006 years as research co-worker at the University of Erlangen-Nürnberg of Germany. He is research co-worker at the department “Technical Thermodynamics” of University of Rostock from 2006 and has permanent position in this University from year 2011. Javid Safarov is member of the German group of the International Association for the Properties of Water and Steam (IAPWS). He has honoured the DAAD (2002 and 2006), Alexander von Humboldt (2003-2004, 2007) and JSPS-Japan (2004) fellowships. Dr. Javid Safarov is the co-author of 1 book, 1 monograph, 4 lecture book and more than 250 publications in the journals and conferences. He is leader of the research group of “Thermophysical properties of fluids” at the department “Technical Thermodynamics” of University of Rostock. Research field: Thermophysical properties of substances. He is one of leading person in the research field of investigations of the Thermophysical properties of fluids in the world. Married, has 3 daughters.


Name Vlastimil Boháč
Affiliation Institute of Physics, Slovak Academy of Sciences
Homepage https://www.sav.sk/?lang=en&doc=user-org-user&user_no=370
Title The use of transient methods for the investigation of the thermal properties of materials correlated with the changes of the structure caused by effects of different origin.
Abstract The talk will be concentrated on the use of the transient methods in material research. The list of transient techniques available at the thermophysical laboratory at the department of metals at the IP SAS will give a picture about thermal properties research possibilities of this class of techniques. The most papers published within our laboratory were on the Pulse Transient Method based on ideal model with some simple correction factors introduced to eliminate possible disturbing effects. Recent work is continuing with development of new models for this method. The new models for PTM were extended for different sample geometries as well as for various initial and boundary conditions, as well as for different disturbance effects. The new method published recently is the Planar Disc Transient Method where the heat source as well as the thermal probe is united in a form of full disc made of metallic sheet. Some experimental results given in the talk will illustrate the wide scale of use in practice and the sensitivity on various effects connected with the material structure changes of various kind. The correlation of the structure change due to sintering process with measured values of the thermophysical parameters will be illustrated on three types of electro-technical ceramics. The next effect is the release of the mechanical stress during the relaxation of the compacted powder. The influence of rising composite filler content will show the correlation with the increase of thermal transport properties. Some of the transient methods were modified for the use as the secondary sensor for the monitoring of thermal transport in porous media in the presence of moisture in pores. Here the effect of thermal transport increase when increasing the moisture content in pores of the material is used. A brief information on calibration of the transient sensors as the secondary sensors for monitoring of the moisture content will show the application of secondary techniques in long time monitoring of the temperature-moisture regime in the field conditions.
Biographical Sketch Recently he is active in the field of transient techniques. He was the leader of the several projects concentrated on the development of transient methods and investigation of material properties by them. He was a project leader of several projects. The last ones were: “Study of rock properties and investigation of structural and textural characteristics in correlation with thermophysical and physico-mechanical properties”, “Development and testing of physical models for the pulse transient method”, “Study of thermal-insulation properties of low thermal conductive materials”. He was the chairmen of the THERMOPHYS conference in the years 2012, 2013 and 2014. He is editorial board member of the International Journal of Engineering and Allied Sciences (IJEAS) He is a member of the scientific committee of the MEASUREMENT and THERMOPHYS conferences. He makes revision reports on scientific projects for academic grant agency. He reviewed manuscripts for 11 scientific journals and 3 conferences. He is the author of 40 articles in refereed in Web of Science. Research fields: Transient methods – uncertainty analysis of models, methodology of experiment optimization. Thermal characterization of materials – measurement of basic thermophysical parameters, the structure change effects, influence of atomic rearrangement, stress relaxations. Technology – optimization of technological processes, ceramic sintering, polymer curing, concrete stiffening. Influence of the moisture content on transport properties in porous materials – monitoring of the moisture-temperature regime in porous media, combined transport.