Keynote Speakers

 

Keynote Speaker I

 

 

Assoc. Prof. Tim Pasang

Auckland University of Technology, Auckland

 

Brief Biography: Tim Pasang is an Associate Professor at Auckland University of Technology, New Zealand. He received his B.E in metallurgical engineering from Bandung, Indonesia in 1991, and PhD in Materials Engineering of Monash University, Australia in 2001. He spent a number of years as Research Engineer at the Indonesian Aircraft Industry. In 2001-2004 he worked as Senior Consultant at the PSB Corp, Singapore before moving to New Zealand in 2004. He is now the Head of Department of Mechanical Engineering at Auckland University of Technology (AUT), New Zealand. His research is mainly on welding, machining, metal forming and more recently on metal additive manufacturing.

Speech Title: Welding of Titanium Alloys and Recent Improvements

Abstract: A fairly systematic and comprehensive fusion welding investigation on titanium alloys have been conducted. The alloys used represented three major areas. They are (1): CP Ti and alpha alloys, (2): near alpha and alpha+beta alloys, and (3): rich alpha+beta and beta alloys. From our preliminary results, we can summarised that the structure of fusion zone (FZ) and heat affected zone (HAZ) of alloys from area (1) changed but their hardness remained the same as the as-received material or slightly increased, if any. Alloys from area (2) had its microstructure changed and significant increase in hardness in the FZ and HAZ, while alloys from area (3) experienced reduction in hardness associated with retained beta in the FZ. Recently, we managed to, possibly, overcome these “shortcomings” by employing a proper interlayer, where hardness across the base metal and weld zone was comparable, particularly for alloys from areas (2) and (3). Such results will eliminate the use of post welding heat treatment (PWHT), which will lead to cost reduction and process efficiency.


 

 

Keynote Speaker II

 

 

Prof. Kwang Leong Choy

University College London, UK

 

Brief Biography: Kwang Leong Choy [D.Phil (oxon)., DSc, FIMMM, FRSC] is the Professor of Materials Discovery and the Director of the UCL Institute for Materials Discovery at University College London (UCL) since 2014. She obtained her Doctor of Philosophy (D.Phil.) in Materials Science from the University of Oxford and Doctor of Science (D.Sc.) in Materials from the University of Nottingham. She has been employed at University of Oxford, Imperial College London and University of Nottingham before joining UCL. She has extensive experience in in materials creation, discovery and exploitation of eco-friendly, cost-effective and sustainable high performance thin films and nanomaterials processing technologies, especially for clean energy and engineering applications. She has authored over 230 peer-reviewed publications, including 5 books and 20 patents in nanomaterials, thin films and coatings for structural, functional and biomedical applications. She is the recipient of Grunfeld Medal Prize and has given over 150 keynote papers/invited lectures and conference session Chairman. She is leading a multidisciplinary research team ranging from material scientists, chemists, physics, coating specialists, bioengineering, nanobiotechnology, and engineers. Her team is conducting cutting edge research and technology exploitation of high performance, eco-friendly and cost-effective processing of new nanostructured materials, nanocomposites and superthin/thin/thick films coated products for thin film solar cells, clean energy, energy storage, electrical, optoelectronics, environment, health care, and biomedical applications. She has been elected to several prestigious fellowships such as Fellow of the Institute of Materials (2007-present), Royal Society of Chemistry (2010 - present), European Science Foundation NANO network (2008-2014), Chartered of Science, CSi (2007- present), as well as on editorials boards (Editorial Board of Nano-Micro Letters, Journal of Nanomaterials, and Guest Editor of “Surface Engineering” and “Chemical Vapour Deposition”). She has been the Founder, Inventor and Director of Innovative Materials Processing Technologies Ltd and Co-Founder of Southside Thermal Sensing (spin-out companies from Imperial College London). She was awarded a Visiting Professorship (2001/03) by the Swedish Engineering Research Council at the University of Uppsala, Visiting Professorship for Senior International Scientist at Ningbo Institute of Materials Technology and Engineering (NIMTE, 2010/2012), and Chinese Academy of Sciences (2011/2013). She has secured and managed numerous multimillion pounds national and European flagship research programmes with extensive collaboration with academia and industry. She has also established multi-million pound state-of-the art nanomaterials, innovative thin/thick films processing and characterisation facilities.

Speech Title: CVD: Advances, Technologies and Applications

Abstract: This contribution presents an overview on the recent advances in the use of chemical vapour deposition for the fabrication of nanomaterials, thin/thick films, nanocomposite coatings, and composites to address grand challenges in energy, engineering, and biomedical applications. Special emphasis on the innovation in high performance nanofilms and nanocomposite coatings using innovative, scalable, sustainable non-vacuum based chemical vapour deposition methods will be presented. The use of such emerging CVD variants to develop nanomaterials and thin/ thick films with unique structures and optimised properties, as well as for the creation of new types of highly functional systems and efficient devices will be highlighted.


 

Keynote Speaker III

 

 

Prof. Maria Tomoaia-Cotisel
Babes-Bolyai University of Cluj-Napoca, Romania

 

Brief Biography: University professor Maria Tomoaia-Cotisel completed PhD at Babes-Bolyai University (BBU, 1979) of Cluj-Napoca, Romania, and postdoctoral studies from London University, King’s College (1981, 1986, 1989), UK. She was the visiting scientist at Philipps University of Marburg, (1989/1990), Germany, State University of New York at Buffalo (1990/1991), US, National Institutes of Health, (1991-1993) and Molecular/Structural Biotech., Inc., (1994-1997), Bethesda, MD, USA. She is the founder and director of Research Center in Physical Chemistry (2007- ) at BBU. She published over 250 original research papers, 5 patents, and 10 books in physical chemistry, including thermodynamics, chemical structure, biophysics, bionanomaterials, colloids and interfaces. She got awards, e.g., Gheorghe Spacu Award (1983, from the Academy of Sciences in Romania), Alexander von Humboldt Award (1986, Germany), Japan Society for Promotion of Science and Technology Award (1986, Japan) and Fogarty Award (1991, USA) for science and technology. Research Interests: Nanomaterials, advanced nanotechnology for biomedical applications, nanostructured advanced biomaterials, multi-substituted hydroxyapatite based bioceramics for osteoporotic bone remodeling and regeneration, nanomaterials for tissue engineering, nanomicrobials, biocomposites, biomimetic self-assembled scaffolds, porous bioresorbable scaffolds, regenerative medicine, cancer cellular therapy, nanoparticles of gold and silver for cancer therapy, nanoscale materials for drug delivery, Biomolecular immobilization and surface modification strategies.

Speech Title: Advanced Engineering Materials for Bone Regeneration

Abstract: The development of smart engineering materials having composition, structure and biological features that mimic natural bone is a major goal to be pursued for bone regeneration. Amongst the multi-functional ceramics, like nano hydroxyapatites containing Mg, Zn, Sr and Si within hydroxyapatite (HAP) lattice, noted HAP-Mg-Zn-Sr-Si, are of a major interest for hard tissue engineering, bone regeneration and biomedical applications, particularly due to their similarity with biological HAP from bone structure. As innovative engineering strategy, the ionic substitution presents an intelligent tool to improve the biological efficiency of nanostructured biomaterials based on HAP, as a new generation of advanced ceramics based on multi-substituted hydroxyapatites, ms-HAPs. Series of these materials were synthesized in our Physical Chemistry Center by innovative strategies, using eco-friendly and cost-effective material processing technologies, including wet chemical precipitation methods, without surfactants or template molecules, by thermal processing and lyophilisation, leading to high performance materials for biomedical applications. The nano ms-HAPs, containing divalent cations of Mg, Zn and Sr, as well as with Si as orthosilicate, were synthesized and thoroughly characterized. Particle size, crystallinity, morphology, specific surface area of obtained advanced multi-functional ceramics were investigated by XRD, ICP-OES, SEM-EDX, FT-IR and FT-Raman spectra, HR-TEM, AFM and BET measurements. The obtained data confirmed a unique nanostructured phase of the highest compositional purity for all synthesized biomaterials. Results also showed a distinct change in shape and size of nanoparticles, and in crystallinity of lyophilized powders. The substitution effect on biological performance of these materials was investigated in vitro on primary human osteoblasts in culture media. Therefore, innovative scaffolds were fabricated by supramolecular engineering approach from advanced HAP-Mg-Zn-Si and HAP-Mg-Zn-Sr-Si bioceramics self-assembled alone or with collagen type 1, COL, by adsorption at solid/liquid interface. Human osteoblasts response on doped HAPs was assessed by viability tests, like MTT assay, adhesion and proliferation, and protein expression for osteoblast markers, such as collagen type 1, osteopontin, osteonectin and osteocalcin. Moreover, the investigation of alkaline phosphatase activity and F-actin stress fibers indicated the highest biological performance for advanced multi-functional bioceramics compared with pure HAP scaffolds, particularly in promoting the formation of mineralized bone matrix. The enhanced biological performance of these advanced nanomaterials recommends them for medical applications, as bioactive coatings for smart orthopaedic and dental implants and as bone substitute for bone repair and regeneration. Consequently, multi-substituted hydroxyapatites can be a promising ceramic platform for nanomedicine applications.

 

 

Keynote Speaker IV

 

 

Prof. Jordi Arbiol

ICREA & Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Spain

 

Brief Biography: Prof. Jordi Arbiol was born in Molins de Rei (Catalonia) in 1975. Having graduated in Physics from the Universitat de Barcelona (UB) in 1997, he went on to obtain his PhD (European Doctorate and PhD Extraordinary Award) in 2001 from this same institution in the field of transmission electron microscopy (TEM) applied to nanostructured materials. He was assistant professor at the UB. From 2009 to 2015 he was a group leader at the Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), as well as the scientific supervisor of its electron microscopy facilities. He is President of the Spanish Microscopy Society (SME) since 2017 and held the position of vice-president from 2013 to 2017, having been a member of its Executive Board since 2009. In 2018 he was elected as Member of the Executive Board of the International Federation of Societies for Microscopy (IFSM) (2019-2026). Since 2015 he has been the leader of the ICN2 Advanced Electron Nanoscopy Group. He was awarded the 2014 EU40 Materials Prize by the E-MRS, the 2014 EMS Outstanding Paper Award and was listed in the Top 40 under 40 Power List (2014) by The Analytical Scientist. He has more than 320 peer-reviewed publications and more than 12200 citations with h-index: 63 WoS (72 GoS).  

Speech Title: 2D Semiconductor nanostructures at atomic scale

Abstract: Technology at the nanoscale has become one of the main challenges in science as new physical effects appear and can be modulated at will. Materials for spintronics, electronics, optoelectronics, chemical sensing, and new generations of functionalized materials are taking advantage of the low dimensionality, improving their properties and opening a new range of applications. As developments in materials science are pushing to the size limits of physics and chemistry, there is a critical need for understanding the origin of these unique physical properties (optical and electronic) and relate them to the changes originated at the atomic scale, e.g.: linked to changes in (electronic) structure of the material.
During the talk, I will show how atomic resolution high angle annular dark field (HAADF) scanning transmission electron microscopy (STEM) can help to understand the growth mechanisms of complex 2D nanostructures such as nanomembranes, nanoflakes or nanobelts.
The presentation will combine the visualization of 3D atomic models recreating the growth of these 2D nanostructures, as well as a direct correlation between their structure and chemical composition at the atomic scale, with their local properties at the nanoscale, electronic and photonic and how they can be arranged as perfect templates for quantum nanowire networks. In addition, I will show the in-situ dynamic reconstruction processes of monolayer grain boundaries in MoS2 at atomic scale under the electron beam as well as the sulfurization evolution that drive the transformation of a MoO2 nanomembrane to a MoS2 nanoflake.

 

Keynote Speaker V

 

 

Prof. Masahiro Tsukamoto

Osaka University, Japan

 

Brief Biography: Masahiro Tsukamoto got PhD from the Osaka University Graduate School of Engineering in 1994. His research field was nonlinear scattering of high intensity laser in expanding plasmas from fuel shell of laser nuclear fusion. Assistant professor of Joining and Welding Research Institute, Osaka University from 1994. From 1996 to 1998, he stayed in Lawrence Livermore National Laboratory, USA as a visiting scientist and was also postdoctral fellowship for research abroad of Japan Society for the Promotion of Science. Associate professor of Osaka University from 2006. Professor of Osaka University from 2017. Project leader of “Research and development of the laser coating technology to realize high value-added design and fabrication” in “Innovative Design/Manufacturing Technologies" of Cross-ministerial Strategic Innovation Promotion Program (2014-2018). Research and development manager of “Development of high intensity blue diode laser for next-generation additive manufacturing” in new energy and industrial technology development organization (NEDO) project “Research and development of next generation laser processing technology (2016-2020)”.

Speech Title: Development of laser additive manufacturing technology with IR and blue diode lasers

Abstract: We developed a multi-beam processing head with six high intensity infrared diode lasers in order to realize a high quality cladding layer having a dense, fine and purity. Total laser power on the base plate was 300 W since six laser beams were overlapped. We also designed a multi-beam processing head with high intensity blue diode lasers for cladding of copper powder. We have developed a high intensity blue diode laser with the power of 100 W. The three blue diode lasers could be installed to the processing head to obtain the power of 300 W on the base plate.