HTCMC 9 – GFMAT 2016 Plenary Speakers
Shunpei Yamazaki, founder and president, Semiconductor Energy Laboratory Co., Ltd.
Title：Discovery of Indium Gallium Zinc Oxide (CAAC/CAC-OS) and Application to Next Generation Information Display Devices
Abstract: IGZO having layered crystal morphology of c-axis aligned crystalline indium gallium zinc oxide (CAAC-IGZO) was discovered in 2009. CAAC-IGZO has features that crystals are highly c-axis-aligned with no clear grain boundaries while crystals are not aligned in the a-b plane direction.
Field-effect transistors (FETs) with an active layer of CAAC-IGZO exhibit high field-effect mobilities of 30-40 cm2V-1s-1. They also show extremely low off-state current of 10yA/μm at 85℃ and on-off ratio of 1020 digits. CAAC-IGZO products have already mass-produced successfully, and its application to extreme-low-power-consumption LSIs and computers is further expected.
Combined analyses were performed using TEM observations and computer simulations and found that CAAC-IGZO have new crystal morphology. Based on the results, we propose a deposition model of CAAC-IGZO that minute crystal nuclei laterally grow and connected to each other at the initial stage of the deposition so that they form characteristic layered crystal morphology.
Biography：Shunpei Yamazaki received his Ph.D., ME, BE and honorary degrees from Doshisha University, Japan, in 1971, 1967, 1965, and 2011 respectively, and is the founder and president of Semiconductor Energy Laboratory Co., Ltd. Yamazaki invented a non-volatile memory known as “flash memory” in 1970 while in his Ph.D. program. Yamazaki is a life fellow of the IEEE, distinguished foreign member of the Royal Swedish Academy of Engineering Sciences, and a member of the Board of Trustees of Ceramic and Glass Industry Foundation (CGIF) of the American Ceramic Society. He was awarded Medal with Purple Ribbon by the Japanese Prime Minister’s Office for the innovation of MOS LSI element technology in 1997, and was the winner of the Okochi Memorial Technology Award in 2010. Yamazaki has published or co-published over 400 papers or conference presentation and is the inventor or co-inventor of over 6,314 patents (Guinness World Record in 2011). He received the 2015 SID Special Recognition Award for discovering CAAC-IGZO semiconductors, leading its practical application, and paving the way to next-generation displays by developing new information-display devices such as foldable or 8K×4K displays.
A.N. Sreeram, Sr. Vice President Research & Development and Chief Technology Officer, Dow Chemical Company
Title：The Science of Materials: Impactful Solutions to Big Global Challenges
Abstract: Humanity faces a number of big challenges. Providing energy that is safe and clean. Providing water to a thirsty planet. Feeding a growing global population. Protecting and preserving nature and the modern infrastructure. Dow Chemical is a world leader in the application of chemistry and material science, uniquely positioned to address big global challenges. Technologies that reduce energy use, provide clean water, make cars safer and more efficient, protect and preserve crops, and protect and preserve food are some of the examples of the impactful technologies made possible by mastery of material science.
Biography: A.N. Sreeram holds more than 20 U.S.-issued patents, earned his doctorate degree from the Department of Materials Science & Engineering at Massachusetts Institute of Technology, and his master’s degree in Glass Science from Alfred University in New York. He is also a graduate of the ceramics engineering program from the Indian Institute of Technology – BHU in Varanasi, India. He serves on the Advisory Board for the University of California (Berkeley) College of Engineering and on the Dow Corning Board of Directors as a member of the Dow Corning Corporate Responsibility Committee.
Sreeram has served as the Global Technology Director and Chief Technology Officer for DuPont Electronic Technologies, and as Vice President of Worldwide Technology for Cookson Electronics and led the Electronic and Flat Display Program for Sarnoff Corporation.
Sreeram joined Dow in June 2006 as Vice President of Core R&D, where he sparked innovation in applying advanced materials to a number of key market segments, including automotive, infrastructure and health. He’s credited with driving the adoption of high-throughput technologies at Dow to significantly speed up the R&D process while lowering costs and dramatically increasing the probability of product success. The resulting R&D transformation has given Dow a distinct market advantage by allowing the company to more quickly develop products that address in-demand customer needs.
Sreeram served as Vice President of R&D for Dow Advanced Materials, where he drove innovation across the organization’s portfolio. Under his leadership, Dow Advanced Materials launched highly successful products addressing global trends including energy, infrastructure and transportation, health, and consumerism. Several of these products — including SILVADUR™ Antimicrobial technology for fabrics, EVOQUE™ pre-composite polymer for paints, and the low-energy FILMTEC™ ECO Reverse Osmosis Elements for water purification — have recently gained top industry accolades through the prestigious R&D 100 Awards program. In 2014, Dow as a whole earned five additional R&D 100 Awards for its breakthrough products.
In his current role, Sreeram focuses on accelerating new product and technology commercialization through strategic collaboration with Dow’s customers, combining R&D effectiveness with market-focused discipline, while extending his positive influence to the entire company. He empowers those throughout Dow’s R&D organization to execute against an innovation pipeline that’s closely aligned to strategic growth areas, while also generating new solutions to global challenges.
Katherine A. Stevens, general manager, materials and process engineering, GE Aviation
Title: SiC/SiC Ceramic Matrix Composites for Jet Engines
Abstract: Aircraft engines operate more efficiently at higher temperatures and pressures, but the industry is running into the temperature limits of even the most advanced metal superalloys. SiC/SiC Ceramic Matrix Composites (CMCs) provide greater temperature capability, weigh about a third as much, and survive better in a variety of environments around the world – all of which significantly expand their potential usage. SiC/SiC CMCs have now moved beyond development programs and into certified engines for commercial aircraft. Currently, over 10,000 jet engines incorporating CMCs in the “hot section” are on order, with the first entering airline service later this year. This talk will cover the state-of-the art in SiC/SiC materials, design, and verification, including the large amount of testing underway from material coupons to engine components in flight tests. It will also describe the associated manufacturing supply chain that has been created and will conclude by summarizing requirements for the next generation of CMC systems.
Biography: Katherine A. Stevens leads the materials and process engineering department for GE Aviation, where she has cradle-to-grave responsibilities for the materials used in the turbine engines GE builds and services for powering commercial and military aircraft. Prior to joining GE as a senior executive, Stevens spent 34 years working for the U.S. Air Force and Navy as a technologist, ending with an appointment to the government’s senior executive service. Her last assignment was as director of the materials and manufacturing directorate in the Air Force research laboratory, where she was responsible for planning and executing all of the Air Force’s advanced materials, processes, and manufacturing technology developments needed to support all elements of the Air Force mission. Stevens holds a PhD degree in materials engineering from The Ohio State University and an M.S. in business from Stanford University.
Jörg Esslinger, Director Materials Engineering, MTU Aero Engines, AG
Title: Ceramic Matrix Composites (CMCs): Enabling Materials for Competitive Aero-Engines
Abstract: Today, we witness the first steps of a trend towards an extended use of novel, non-metallic materials in the hot section of aero engines. These materials will be a substantial enabler to realize the tremendous technical demands to be competitive at the future engine market: Increase in materials’ temperatures of more than hundred Kelvin and parts’ weight reduction well above twenty percent.
Promising, in some cases competing, candidates are intermetallics and fiber reinforced composites. In this group, the CMCs involve the maximum potential as a high-temperature-and-low-weight material, however, simultaneously the highest challenges to come up with an economical competitive, stable production and a reliable design for the application in aviation.
Whereas CMCs have a long history in research and other industrial applications, aero engines’ requirements for materials’ quality result in the need of substantial additional efforts to enable a broad application. The successful implementation of titanium aluminides, the first “non-metallic game changer” to load-bearing hot-section components, revealed some basic key factors of success: highly integrated development teams of research, suppliers, and engine manufacturer; upper management attention and willingness of all parties to invest in a future technology; strategies to enable delivered quantities sufficient to justify invests and to reduce production costs.
Further, there are CMC-specific tasks that still challenge developers: materials and coatings withstanding extended aero engines’ life requirements; automatization of production processes for a stable and economic production; maturity of material-and-production-appropriate designing and qualification; quality inspection and repair procedures.
If and only if all of these targets are achieved consistently, CMCs will win the competition with other materials’ solutions in aero engines sustainably.
Biography: Jörg Esslinger is director of materials engineering at MTU Aero Engines AG, Munich, Germany. MTU is actively involved in the development, manufacture and support of commercial and military aircraft engines in all thrust and power categories and stationary gas turbines. He studied physics at the Technical University of Munich and at the University of Stuttgart. He obtained his PhD at the Stuttgart Max Planck Institute for Metals Research / Department of Physics. He started his career at MTU Munich in 1990. He worked in structural mechanics and later in the materials sector. Under his aegis, MTU participates in research projects of federal states, the federal government and the EU in the field of Materials Science and Engineering. Moreover, Esslinger holds lectures at TU Munich. He is a board member of the DGM and the VDI Society Materials Engineering and supports the Materials Science Forum of the BDLI and the initiative “Bayern Innovativ“.