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Experiments Settle Long-Standing Debate about Mysterious Array Formations in Nanofilms

05-19-11

Sandra M. Troian, Professor of Applied Physics, Aeronautics, and Mechanical Engineering, and colleagues' experiments have confirmed which of three possible mechanisms is responsible for the spontaneous formation of three-dimensional (3-D) pillar arrays in nanofilms (polymer films that are billionths of a meter thick). "My ultimate goal is to develop a suite of 3-D lithographic techniques based on remote, digital modulation of thermal, electrical, and magnetic surface forces," Troian says. Confirmation of the correct mechanism has allowed her to deduce the maximum resolution or minimum feature size ultimately possible with these patterning techniques. [Caltech Press Release]

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Professor Greer Receives DOE Early Career Research Award

05-06-11

Julia R. Greer, Assistant Professor of Materials Science and Mechanics, has received a five-year award from the Department of Energy Office of Science's Early Career Research Program for her proposal entitled “Investigation of radiation damage tolerance in interface‐containing metallic nano structures”. These research awards provide incentives for exceptional researchers, during the crucial early career years, to focus on research areas that are a high priority for the Department of Energy and the Nation. [Caltech Feature]

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Professor Greer Receives 2010 World Technology Award in Materials

12-08-10

Julia R. Greer, Assistant Professor of Materials Science and Mechanics, is the winner of The 2010 World Technology Award in Materials.
Congratulations Professor Greer!

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Caltech's Approach to Graduate Education Validated

10-15-10

All of the 24 ranked graduate programs at Caltech have placed exceptionally high in the National Research Council (NRC) study of more than 5000 graduate research programs, validating the Caltech approach to graduate education. With respect to the EAS Division: Aeronautics, Bioengineering, Civil Engineering, Electrical Engineering, Environmental Science and Engineering, and Materials Science were ranked in the top five nationally irrespective of size. [Caltech NAS Rankings]

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Julia Greer's Paper is Highest Cited in Acta Materialia in the Past Five Years

08-18-10

Congratulations to Julia R. Greer, Assistant Professor of Materials Science and Mechanical Engineering, whose paper entitled Size dependence of mechanical properties of gold at the micron scale in the absence of strain gradients is the highest cited original research paper, in the past five years, in Acta Materialia.
[Find and read the paper by clicking the "Top 10 Cited" link]

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55th Annual Staff Service Awards

06-04-10

The 55th Annual Staff Service Awards recognized 242 staff members for their 4,080 collective years of service to Caltech. The staff recognized for their service to the EAS division were: Ann Harvey and Eleonora Vorobieff for 10 years of service; Sylvie Gertmenian and Christine Silva for 15 years of service; Marionne Epalle, and Bahram Valiferdowsi for 20 years of service; Janet Couch, Daniel Lang, and Ya Yun Liu for 25 years of service; and Calvin Jackson, Jr. and Sheila Shull for 30 years of service. Congratulations and thank you! [Listen and learn more about the staff honored]

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Nanoscale Structures with Superior Mechanical Properties

02-09-10

Julia Greer, Assistant Professor of Materials Science and Mechanical Engineering, and Dongchan Jang, Postdoctoral Scholar, have developed a way to make some notoriously brittle materials ductile—yet stronger than ever—simply by reducing their size. Professor Greer describes, "We are entering a new era in materials science, where structural materials can be created not only by utilizing monolith structures, like ceramics and metals, but also by introducing 'architectural' features into them." [Caltech Press Release]

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Julia Greer Selected to Participate in the DARPA Young Faculty Award Program

11-04-09

Congratulation to Julia R. Greer, Assistant Professor of Materials Science and Mechanical Engineering, for been selected to participate in the DARPA Young Faculty Award program. She is among 33 "rising stars" from 24 U.S. universities who each will receive grants of approximately $300,000. Greer's project is aimed at understanding and subsequently mimicking the superior mechanical robustness and strength of naturally occurring protective layers—such as nacre, or mother of pearl, a composite produced by some mollusks to line their inner shell—to create strong, ductile, damage-tolerant materials that maintain a relatively low density. [Caltech Press Release]

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Sandra Troian and Mathias Dietzel Solve Decade-Long Mystery of Nanopillar Formations

10-23-09

Sandra Troian, Professor of Applied Physics, Aeronautics, and Mechanical Engineering, and Dr. Mathias Dietzel have uncovered the physical mechanism by which arrays of nanoscale pillars can be grown on polymer films with very high precision, in potentially limitless patterns. "This is an example of how basic understanding of the principles of physics and mechanics can lead to unexpected discoveries which may have far-reaching, practical implications," said Ares Rosakis, Division Chair and Theodore von Kármán Professor of Aeronautics and Mechanical Engineering at Caltech. "This is the real strength of the EAS division." [Caltech Press Release] [video] [Download real player]

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Julia Greer Recognized as a Rising Star by Advanced Functional Materials

10-01-09

Julia R. Greer, Assistant Professor of Materials Science and Mechanical Engineering, has been recognized as a rising star by Advanced Functional Materials. Her latest publication is entitled Emergence of New Mechanical Functionality in Materials via Size Reduction. [Read Julia Greer's interview]

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