Department of Applied Physics and Materials Science - Applied Physics

News & Events


Engineered Metasurfaces Replace Adhesive Tape in Specialized Microscope


The latest advance in a new type of optics aimed at improving microscopy started with a game of tennis three years ago between Mooseok Jang a graduate of Professor Changhuei Yang's lab and Yu Horie working with Professor Andrei Faraon. "The hope is that our work will prompt further interest in this area of optics and make this type of microscopy and its advantages feasible for practical, everyday use—not just as a proof of concept," says Josh Brake, a graduate student in Yang's lab who continues to work on the project with Faraon and Yang. [Caltech story]

Tags: EE research highlights Changhuei Yang MedE alumni Andrei Faraon Mooseok Jang APh Yu Horie Josh Brake

Professor Fultz Named TMS Fellow


Brent Fultz, Barbara and Stanley R. Rawn, Jr., Professor of Materials Science and Applied Physics, has been named a 2018 Fellow of the Minerals, Metals, and Materials Society (TMS). Professor Fultz received the award for leadership in establishing the importance of vibrational entropy to the phase stability of alloys and for transformational advances in measurement techniques. This is a pinnacle award for the society and it recognizes outstanding contributions to the practice of metallurgy, materials science, and technology. [List of TMS fellows]

Tags: APhMS honors Brent Fultz

Building Blocks to Create Metamaterials


Chiara Daraio, Professor of Mechanical Engineering and Applied Physics, and colleagues have created a method to systematically design metamaterials using principles of quantum mechanics. "Before our work, there was no single, systematic way to design metamaterials that control mechanical waves for different applications," Professor Daraio says. "Instead, people often optimized a design to fulfill a specific purpose, or tried out new designs based on something they saw in nature, and then studied what properties would arise from repeated patterns." [Caltech story]

Tags: research highlights Chiara Daraio MCE APh

Professor Bernardi Receives NSF CAREER Award


Marco Bernardi, Assistant Professor of Applied Physics and Materials Science, has been awarded the National Science Foundation's (NSF) Faculty Early Career Development (CAREER) Award for his 5-year project, “First-Principles Electron and Spin Dynamics in Materials with Spin-Orbit Coupling”. The CAREER program is NSF's most prestigious awards for junior faculty members. The level and 5-year duration of the awards are designed to enable awardees to develop careers as outstanding teacher-scholars. Awardees are chosen because they exemplify the role of teacher-scholars through outstanding research, excellent education and the integration of education and research within the context of the mission of their organizations. [Caltech story]

Tags: APhMS honors NSF CAREER NSF Marco Bernardi

Professors Recognized as Highly Cited Researchers


Professors Harry A. Atwater, Jr., Babak Hassibi, Oskar J. Painter, John Seinfeld, Joel A. Tropp, Kerry J. Vahala, and Paul Wennberg have been named by Clarivate Analytics and Web of Science as 2017 Highly Cited Researchers. Their research ranks among the top 1% most cited works in their fields and they are being recognizes for their dedication and focus to expanding the sphere of human knowledge.  [List of recipients]

Tags: APhMS honors Harry Atwater Paul Wennberg Oskar Painter John Seinfeld Joel Tropp Kerry Vahala Babak Hassibi

Two Holograms in One Surface


Andrei Faraon, Assistant Professor of Applied Physics and Materials Science, graduate student Seyedeh Mahsa Kamali, and colleagues have figured out a way to encode more than one holographic image in a single surface without any loss of resolution. The team developed silicon oxide and aluminum surfaces studded with tens of millions of tiny silicon posts, each just hundreds of nanometers tall. Each nanopost reflects light differently due to variations in its shape and size, and based on the angle of incoming light. [Caltech story]

Tags: research highlights Andrei Faraon APh Seyedeh Mahsa Kamali

The Microscopic Origin of Efficiency Droop in LEDs


Marco Bernardi, Assistant Professor of Applied Physics and Materials Science, and his colleagues’ semiconductor research has shown that the coupling between electrons and thermal vibrations may be sapping energy from Light-emitting diodes—or LEDs. "Our work shows for the first time that the ever-present interaction between electrons with lattice vibrations can, by itself, explain why excited electrons can leak out of the active layer and account for inefficiencies in GaN LEDs," Professor Bernardi says. [Caltech story]

Tags: APhMS research highlights Marco Bernardi

Professor Yariv Elected As Honorary Member of The Optical Society


Amnon Yariv, Martin and Eileen Summerfield Professor of Applied Physics and Electrical Engineering, has been elected as a 2017 Honorary Member of The Optical Society. He was elected for pioneering scientific and engineering contributions to photonics and quantum electronics that have profoundly impacted lightwave communications and the field of optics as a whole. Professor Yariv joins a very select and highly distinguished group of Honorary Members which include George E. Hale in 1916 and R.A. Millikan in 1950 from Caltech. [List of Honorary Members]

Tags: Amnon Yariv APhMS honors

Professor Fultz Elected APS Fellow


Brent Fultz, Barbara and Stanley R. Rawn, Jr., Professor of Materials Science and Applied Physics, has been elected as a 2017 Fellow of the American Physical Society (APS) “For seminal experiments demonstrating the importance of vibrational entropy to the phase stability of materials and transformational leadership in the development of neutron scattering techniques.” [APS Fellow Archive]

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Professor Bernardi Wins AFOSR Young Investigator Award


Marco Bernardi, Assistant Professor of Applied Physics and Materials Science, has won a 2017 Air Force Office of Scientific Research (AFOSR) Young Investigator Award. The objectives of this program are: to foster creative basic research in science and engineering, enhance early career development of outstanding young investigators, and increase opportunities for the young investigators to recognize the Air Force mission and the related challenges in science and engineering. Professor Bernardi received the award for his proposal entitled, “Ab Initio Electron-Defect and Electron-Phonon Scattering for Understanding and Designing High-Mobility Semiconductors and Oxides.” [AFOSR Press Release]

Tags: APhMS honors Marco Bernardi