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Highlights

Highlights

Mar 5, 2015
Northwestern University

Extracting Electronic Structure in Amorphous Oxide Semiconductors from Photoresponse

Jiajun Luo, D. Bruce Buchholz, Robert P. H. Chang, Alexander U. Adler, Thomas O. Mason, Jeremy Smith, Xinge Yu, Tobin J. Marks, and Matthew Grayson  Northwestern University Materials Research Science & Engineering Center 
• Amorphous oxide semiconductors (AOS) provide superior performance and lower cost for next generation displays. However, instability under illumination remains a critical issue. • In this work, the photoconductivity decay was investigated to deduce deep trap density.
Mar 5, 2015
Northwestern University

The Structure and Properties of Amorphous Indium Oxide

D. Bruce Buchholz1, Qing Ma2, Diego Alducin3, Arturo Ponce3, Miguel José-Yacamán3, Rabi Khanal4, Julia Medvedeva4, Robert P.H. Chang1. 1 - Northwestern University Materials Research Science & Engineering Center2 - DND-CAT, Northwestern Synchrotron Research Center , APS, Argonne National Laboratory3 - Department of Physics and Astronomy, University of Texas at San Antonio4 - Department of Physics, Missouri University of Science & Technology.
Mar 5, 2015
Northwestern University

Influence of Stoichiometry on the Optical and Electrical Properties of Chemical Vapor Deposition Derived MoS2

In Soo Kim1, Vinod K. Sangwan1, Deep Jariwala1, Joshua D. Wood1, Spencer Park1, Kan-Sheng Chen1, Fengyuan Shi1, Francisco Ruiz-Zepeda2, Arturo Ponce2, Miguel Jose-Yacaman2, Vinayak P. Dravid1, Tobin J. Marks1, Mark C. Hersam1, and Lincoln J. Lauhon1. 1 - Northwestern University Materials Research Science & Engineering Center. 2 - Department of Physics and Astronomy, University of Texas at San Antonio, San Antonio, TX 78249
Mar 4, 2015
Northwestern University

Wafer-Scale Anti-Ambipolar Heterojunctions

Deep Jariwala, Vinod K. Sangwan, Jung-Woo Ted Seo, Weichao Xu, Jeremy Smith, Chris H. Kim, Lincoln J. Lauhon, Tobin J. Marks, and Mark C. Hersam  Northwestern University Materials Research Science and Engineering Center
Jan 30, 2015
Yale University

Public Lecture: “How Things Work: The Nano of Computers”

In September 2014, CRISP hosted a public lecture to school children and their parents entitled “How Things Work: The Nano of Computers” by Prof. Sohrab Ismail-Beigi, which described how common electronic devices such as computers and cell phones work. The event also featured hands-on demonstrations for participants that included electronic storage, light emitting devices, deconstructed computer processors, and memory devices.
Jan 30, 2015
Yale University

Using a single atomic layer to turn an insulator into a metal

Kumah, Malashevich, Disa, Arena, Walker, Ismail-Beigi, & Ahn, Phys. Rev. Appl. 2 054004 (2014
By precisely controlling the surface composition of thin oxide films, films can be switched from a metal to an insulator. Atomic-scale control of the surface is achieved using molecular beams of atoms (the molecular beam epitaxy growth method). To understand why the thin film changes from a metal to an insulator, the surface is imaged using x-rays scattered from the film (see 3D image of film on left).
Jan 22, 2015
Cornell University

New property of electrons may lead to novel electronic devices

K. F. Mak, K. L. McGill, J. Park, P. L. McEuen, Science 344, 1489-1492 (2014).
New property of electrons may lead to novel electronic devices How electrons conduct electricity depends on their valley  
Jan 22, 2015
Cornell University

New state of matter may lead to novel computer memory and logic

A. R. Mellnik, J. S. Lee, A. Richardella, J. L. Grab, P. J. Mintun, M. H. Fischer, A. Vaezi, A. Manchon, E.-A. Kim, N. Samarth, and D. C. Ralph, Nature, 511, 449–451 (2014).
New state of matter may lead to novel computer memory and logic Esoteric property of topological insulators leads to efficient switching  
Dec 9, 2014
Massachusetts Institute of Technology

Conducting Highways are Created on the Surface of Magnetic Topological Insulators

Wei, P., Katmis, F., Assaf, B.A., Steinberg, H., Jarillo-Herrero, P., Heiman, D., and Moodera, J.S.
Topological insulators (TIs) are a novel class of quantum materials characterized by an insulating bulk and metallic conducting states at the surface. This metallic behavior however, can be changed by applying a magnetic field or, equivalently, by coupling the TI to a ferromagnetic material. In this work, for the first time, MRSEC researchers have succeeded in turning the TI surface states into an insulating state by coupling the TI to a ferromagnetic insulator.
Dec 9, 2014
Massachusetts Institute of Technology

Topological Insulators Show Promising Results as the Active Element of Electronic Devices

Liu, J., Hsieh, T.H., Wei, P., Duan, W., Moodera, J.S., and Fu, L.

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