ICACC17 Award & Plenary Speakers
The award and plenary speakers program kicks off ICACC17 on Monday, January 23rd from 8:30 a.m. to 12:00 p.m. Make your plans to participate and hear these esteemed speakers.
James I. Mueller Award | 9:00 a.m.
Waltraud Kriven, professor, University of Illinois at Urbana-Champaign
Title: Geopolymers: Structural inorganic polymers
Abstract: Geopolymers are polysialates—charge-balanced, aluminosilicate, ceramic-like materials made from an aluminosilicate source such as metakaolin, dehydrated clays, fly ash, slag, or an alkali metasilicate “waterglass” solution. The stoichiometric chemical composition is M2O•Al2O3•4SiO2•11H2O where M may be Group I elements of Li, Na, K, Rb or Cs; the water content depends on particle size, specific surface area, and aluminosilicate source. The inorganic polymer is made by high shear mixing with the liquid suspension undergoing dissolution, polycondensation, or precipitation under ambient conditions. The resulting inorganic polymer has a microstructure which is impervious, nanoporous (diameter ~6.8 nm), of ~40 vol % nanoporosity, and is nanoparticulate (10-40 nm).
The ceramic-like, cross-linked product shares the brittle nature of ceramics, but can be reinforced with particulates, platelets, chopped fibers, uniaxial fibers, or fiber weaves yielding a strong and tough composite, which is fire and acid corrosion resistant. Geopolymers have refractory adhesive properties up to 1000°C whereupon they crystallize into ceramics of tailorable, crystallographic, thermal expansion. Under inert nitrogen or argon gases at 1400°C to 1600°C, geopolymers undergo carbothermal reduction or carbothermal nitridization, forming soft agglomerates of SiC, Si3N4, or SiAlON nanoparticles. Geopolymers are a potential partial solution to global warming.
Biography: Waltraud (Trudy) Kriven is a professor of materials science, and an affiliate professor of mechanical science and engineering at the University of Illinois at Urbana-Champaign where she been since 1984. Prior to that she was a research scientist at the Max Planck Institute in Stuttgart for four years, and before that a post-doctoral researcher and lecturer at the University of California at Berkeley for three years. She received her Ph.D. in physical and inorganic chemistry from the University of Adelaide in South Australia. Kriven has recognized expertise in the areas of geopolymers; in situ HT (to 2,000 °C in air) synchrotron studies of phase transformations and thermal expansions in oxide ceramics (including ZrO2 and HfO2); oxide composite design; ceramic powder syntheses; phase equilibria determination; and microstructure characterization by electron microscopy (TEM). Kriven is an academician in the World Academy of Ceramics and a Fellow of the American Ceramic Society, and of the Australian Ceramic Society.
Bridge Building Award | 9:40 a.m.
Pavol Sajgalik, president of the Slovak Academy of Sciences and department head, ceramic department, Institute of Inorganic Chemistry, Slovak Academy of Sciences, Bratislava, Slovakia
Title: Additive-free, hot-pressed silicon carbide ceramics—a material with exceptional properties
Abstract: Freeze-granulated and under infrared lamp, annealed silicon carbide powder was densified to the full density without any sintering aids by hot-pressing/ultra-rapid hot-pressing at 1850 °C. As presented, silicon carbide, hot-pressed ceramics has excellent properties. The Vickers hardness is 29 GPa, and indentation fracture toughness is 5.25 MPa.m1/2. Samples that were densified by ultra-rapid hot-pressing also have full density, a 27.4 GPa hardness, and 5.3 MPa.m1/2 fracture toughness. Creep rate of ultra-rapid, hot-pressed samples at 1450 °C and 100 MPa load is 3.8 x 10-9 s-1. At 1400 °C and the same load conditions, the creep rate is 9.9 x 10-10 s-1. Partial phase transformation β/α-SiC was observed in granulated and hot-pressed/ultra-rapid, hot-pressed samples.
Possible explanation of high density silicon carbide ceramics is based on formation of transient liquid phase. Transient liquid is possibly formed by aluminum, carbon, and silica. Aluminum is present as impurity in the starting powder. Increased concentration of aluminum can be explained by its segregation to triple-points at hot-pressing temperature. Carbon is present as residuum of organic agents used for granulation silicon carbide powder. Silica is present as the main impurity of starting silicon carbide powder.
Oxidation behaviour at 1350-1450°C/0-204h was investigated. This SiC ceramics has excellent oxidation resistance (4.91×10-5 mg2/cm4h at 1450°C).
Biography: Pavol Šajgalík is president of the Slovak Academy of Sciences (since 2015) and simultaneously head of the ceramic department at the Institute of Inorganic Chemistry, Slovak Academy of Sciences (since 1999). He is primarily focused on the research and development of non-oxide and oxide high performance ceramics. His main research focus is the relationship between microstructure and mechanical properties of these materials. In 1990, he obtained the Alexander von Humboldt fellowship and spent almost two years in The Max-Planck-Institute for Metal Research in Stuttgart. Subsequently, he stayed several times at the University of Karlsruhe, Germany; AIST Nagoya, Japan; and Rensselaer Polytechnic Institute, USA as a visiting scientist/professor. He served as an external lecturer at the Slovak University of Technology in Bratislava. He has organized many international conferences, and he regularly organizes engineering ceramics workshops. He has led many international projects. He is a president of the European Ceramic Society; a member of The American and Japanese Ceramic Societies; a president of the Slovak Silicate Society; a member elect of the World Academy of Ceramics; and a Fellow of The American Ceramic Society. In 2007, he was awarded as the Scientist of the Year in the Slovak Republic. In 2015, he was awarded the Slovak State decoration: Order of the Ľudovít Štúr of III. Class. He is the author of more than 170 papers, co-editor of 8 proceedings, guest editor of 4 special issues of the professional journals, and co-author of 2 monographs.
Plenary Speaker | 10:40 a.m.
Hiroshi Kishi, operating officer, research and development laboratory manager, Taiyo Yuden Co., Ltd., Japan
Title: MLCC/Inductor trends and technological evolution
Abstract: In this talk, device trends, such as smartphones, will be shown in comparison with those in the automotive industry. Through understanding such trends, the technological evolution of capacitor/inductor will be explained. For example, increased energy density for further capacitor miniaturization was realized through the material and process evolutions. Higher inductor capability was realized by changing the material from ferrite to metal. Material and process technological breakthroughs of capacitors and inductors were necessary to meet the changes in device trends and requirements.
Hiroshi Kishi received his B.S. and M.S. degrees in Physics from Tokyo University of Science in 1978 and 1980, respectively. Kishi joined Taiyo Yuden Co., Ltd., materials research and development division in 1980. He was responsible for the development of dielectric, piezoelectric, and magnetic materials. Kishi obtained a Doctor’s degree in materials science and engineering from Nagoya Institute of Technology in 2002 through works of dielectric material development for multilayer ceramic capacitors. He became an operating officer of R&D center in 2013. He was rewarded the Richard M. Fulrath Award from The American Ceramic Society in 1998, and also was rewarded the Ceramic Society of Japan award, and Japan Society of Powder, and Powder Metallurgy award in 2008.
Plenary Speaker | 11:20 a.m.
Thomas J. Webster, Chair and professor of chemical engineering, Northeastern University
Title: Fifteen years of commercializing ceramic medical devices using nanotechnology
Abstract: There is an acute shortage of organs due to disease, trauma, congenital defects, and most importantly, age related maladies. The synthetic materials used in tissue engineering applications today are typically composed of millimeter or micron sized particles and or fiber dimensions. Although human cells are on the micron scale, their individual components, e.g. proteins, are composed of nanometer features. By modifying only the nanofeatures on material surfaces without changing surface chemistry, it is possible to increase tissue growth of any human tissue by controlling the endogenous absorption of adhesive proteins onto the material surface. Our group has also shown that these same nanofeatures and nano-modifications can reduce bacterial growth without using antibiotics, which may further accelerate the growth of antibiotic resistant microbes. Nanomaterial usage can also decrease inflammation. Finally, nanomedicine has been shown to stimulate the growth and differentiation of stem cells, which may someday be used to treat incurable disorders, such as neural damage. This strategy accelerates FDA approval and commercialization efforts since new chemistries are not proposed, rather chemistries already approved by the FDA with altered nanoscale features. This invited talk highlights some of the advancements and emphasizes current ceramic nanomaterials approved by the FDA for human implantation.
Biography: Thomas J. Webster’s (H index: 74, Google Scholar) degrees are in chemical engineering from the University of Pittsburgh (B.S., 1995) and in biomedical engineering from Rensselaer Polytechnic Institute (M.S., 1997; Ph.D., 2000). Webster is the current director of the Nanomedicine Laboratories (currently at 35 members) and has completed extensive studies on the use of nanophase materials in medicine. He was appointed Department Chair of Chemical Engineering at Northeastern University in 2012. In his 16 years in academics, Webster has graduated/supervised over 109 visiting faculty, clinical fellows, post-doctoral students, and thesis completing B.S., M.S., and Ph.D. students. To date, his lab group has generated over 9 textbooks, 48 book chapters, 306 invited presentations, at least 403 peer-reviewed literature articles (222) and/or conference proceedings (181), at least 567 conference presentations, and 32 provisional or full patents. He is the founding editor-in-chief of the International Journal of Nanomedicine (the first international journal in nanomedicine which has an impact factor of 5.03). Webster has received numerous honors including: 2012, Fellow, American Institute for Medical and Biological Engineering (AIMBE, representing the top 2% of all medical and biological engineers); 2013, Fellow, Biomedical Engineering Society; and 2016, International College of Fellows, Biomaterials Science and Engineering. He was also recently elected President of the U.S. Society For Biomaterials. He has appeared on BBC, NBC, Fox News, the Weather Channel and many other news outlets talking about science.
The ECD Global Young Investigator Award | 1:30 p.m.
Gang Liu, Shenyang National Laboratory for Materials Science, China
Title: Multiscale designing of solar-driven photocatalysts
Abstract: Solar-driven water splitting or reduction of CO2 on semiconductor-based photocatalysts represent a promising technique to convert solar energy into storable chemical energy. The central task in realizing the practical application of photocatalysis is to develop highly efficient solar-driven photocatalysts. The efficiency of photocatalysis is determined by the synergistic effects of solar light absorption, charge separation, and catalytic process. In our study, we introduce these basic processes and focus on three aspects used to tailor the properties of photocatalysts—band engineering, together with exploring unknown photocatalysts; heterostructuring; and facet controlling, which supports the rational construction of high-efficiency photocatalysts.
Biography: Gang Liu received his Bachelor degree in materials physics from Jilin University in 2003. He obtained his Ph.D. degree in materials sciences at the Institute of Metal Research (IMR), Chinese Academy of Sciences (CAS) in 2009. During his Ph.D. study, he worked at The University of Queensland in Australia. He was the recipient of the T. S. Kê Research Fellowship founded by The Shenyang National Laboratory for Materials Science (SYNL), IMR CAS. Now he is a professor of SYNL, IMR CAS. His current main research interest is to develop semiconductor photocatalytic materials for solar fuels. He is an author of over 100 peer-reviewed papers in international journals. He has received several academic awards including China Youth Science and Technology Award (2016), Chinese Chemical Society Award for Outstanding Young Chemists (2014), Ten Thousand Talent Program for Young Top-notch Talent (2012), The National Excellent Doctoral Dissertation Award (2011), and the Lu Jiaxi Award for Junior Scientists of Chinese Academy of Sciences (2010). He is also the recipient of NSFC Excellent Young Scientists (2014) and The Royal Society-Newton Advanced Fellowship (2015).