Department of Applied Physics and Materials Science - Applied Physics

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Highlights

Professor Dimotakis Elected to the National Academy of Engineering

02-09-16

Paul E. Dimotakis, John K. Northrop Professor of Aeronautics and Professor of Applied Physics, has been elected to the National Academy of Engineering (NAE). Professor Dimotakis was elected for his contributions to the fluid mechanics of jet propulsion and other processes involving turbulence, mixing, and transport. [Caltech story]

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Tags: APhMS honors GALCIT Paul Dimotakis National Academy of Engineering Adam Steltzner

Tiny Diatoms Boast Enormous Strength

02-08-16

Researchers in the lab of Julia R. Greer, Professor of Materials Science and Mechanics, have recently found that diatom shells have the highest specific strength—the strength at which a structure breaks with respect to its density—of any known biological material, including bone, antlers, and teeth. [Caltech story]

Tags: APhMS research highlights MedE MCE Julia Greer

Moriah Bischann Wins SURF Speaking Competition

02-04-16

Material science undergraduate student Moriah Bischann, mentored by aerospace postdoctoral scholar, Dr. Owen Kingstedt, is the winner of the Doris S. Perpall Summer Undergraduate Research Fellowships (SURF) Speaking Competition. She was recognized as the best speakers-out of the 200 students who presented their SURF research. Her summer research focused on exploring the next generation of structural materials. During her ten week SURF project she studied the effects of alloying and processing on the dynamic behavior of magnesium (Mg). This work was done to address the larger question of whether Mg is a useful material for the automotive, aerospace, energy, and defense industries where a material is needed that has low density, but also the strength to withstand high impact forces.

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Tags: APhMS honors GALCIT research highlight Moriah Bischann Owen Kingstedt

Novel Calibration Tool Will Help Astronomers

01-27-16

Kerry Vahala, Ted and Ginger Jenkins Professor of Information Science and Technology and Applied Physics; Executive Officer for Applied Physics and Materials Science, and colleagues have developed a novel calibration tool, called a laser frequency comb, which could allow astronomers to take a major step in discovering and characterizing earthlike planets around other stars. The comb produces easily resolvable lines, without any need for filtering and is built from off-the-shelf components developed by the telecommunications industry. "We have demonstrated an alternative approach that is simple, reliable, and relatively inexpensive," says Professor Vahala. [Caltech story]

Tags: APhMS research highlights Kerry Vahala

Microscopic Materials

01-14-16

Marco Bernardi, Assistant Professor of Applied Physics and Materials Science, is fascinated by the interactions of quasiparticles and how they give rise to the world around us. He explains, “I'm most excited about the emphasis on fundamental science here. People can be really tempted by "flashy" science or experiments on hot topics. But to compute what I'm trying to look at, we have to first build our understanding on simple experiments and materials—boring things—before we are able to tackle materials at the frontier of condensed matter research.” [Interview with Prof. Bernardi]

Tags: APhMS research highlight Marco Bernardi

Professor Atwater Elected to National Academy of Inventors

12-16-15

Harry A. Atwater, Jr., Howard Hughes Professor of Applied Physics and Materials Science; Director, Joint Center for Artificial Photosynthesis, has been named fellow of the National Academy of Inventors (NAI). His research focuses on photovoltaics and solar energy—he helped develop an artificial leaf as part of his work with JCAP—as well as plasmonics (oscillations of electrons on the surface of materials) and optical metamaterials (materials comprised of nanostructures). Election as an NAI fellow is an honor bestowed upon academic innovators and inventors who have "demonstrated a prolific spirit of innovation in creating or facilitating outstanding inventions and innovations that have made a tangible impact on quality of life, economic development, and the welfare of society." [Caltech story] [NAI release]

Tags: APhMS honors Harry Atwater

Full Circle Physics

10-20-15

Dive into the thinking of several Institute for Quantum Information and Matter (IQIM) researchers including Oskar J. Painter, John G Braun Professor of Applied Physics and Fletcher Jones Foundation Co-Director of the Kavli Nanoscience Institute, to learn more about the frontiers of quantum science, the role IQIM plays in exploring that frontier, and the question oft thought but rarely spoken: Why should we care? [E&S article]

Tags: APhMS research highlights Oskar Painter

Professor Atwater Receives David Adler Lectureship Award

10-05-15

Harry A. Atwater, Jr., Howard Hughes Professor of Applied Physics and Materials Science as well as the Director of the Joint Center for Artificial Photosynthesis, has been awarded the 2016 David Adler Lectureship Award in the Field of Materials Physics by the American Physical Society. The Award recognizes “an outstanding contributor to the field of materials physics, who is noted for the quality of his research, review articles, and lecturing.” [Learn more]

Tags: APhMS honors Harry Atwater

Inaugural Centers Announced for the Materials Genome Initiative

10-05-15

William A. Goddard III, Charles and Mary Ferkel Professor of Chemistry, Materials Science, and Applied Physics, will be the Caltech Principle Investigator for one of U.S. Department of Energy’s inaugural centers for the Materials Genome Initiative (MGI). The initiative was launched by the White House to “help businesses discover, develop, and deploy new materials twice as fast.” The three inaugural centers are receiving $8 million to “integrate theory and computation with experiment and provide the materials community with advanced tools and techniques in support of the MGI.” Professor Goddard and colleagues will be working on the Computational Synthesis of Materials Software Project with the goal of developing the next-generation of methods and software to predict and control materials processes at the level of electrons. [Learn more]

Tags: APhMS research highlights William Goddard

Atomic Fractals in Metallic Glasses

09-18-15

Julia R. Greer, Professor of Materials Science and Mechanics, and colleagues including graduate student David Chen have shown that metallic glasses has an atomic-level structure although it differs from the periodic lattices that characterize crystalline metals. "Our group has solved this paradox by showing that atoms are only arranged fractally up to a certain scale," Greer says. "Larger than that scale, clusters of atoms are packed randomly and tightly, making a fully dense material, just like a regular metal. So we can have something that is both fractal and fully dense." [Caltech story]

Tags: APhMS research highlights MedE MCE Julia Greer David Chen