School of Humanities and Sciences

Showing 1-10 of 64 Results

  • Dick┬áZare

    Dick Zare

    Marguerite Blake Wilbur Professor in Natural Science and Professor, by courtesy, of Physics

    Current Research and Scholarly InterestsMy research group is exploring a variety of topics that range from the basic understanding of chemical reaction dynamics to the nature of the chemical contents of single cells.

    Under thermal conditions nature seems to hide the details of how elementary reactions occur through a series of averages over reagent velocity, internal energy, impact parameter, and orientation. To discover the effects of these variables on reactivity, it is necessary to carry out studies of chemical reactions far from equilibrium in which the states of the reactants are more sharply restricted and can be varied in a controlled manner. My research group is attempting to meet this tough experimental challenge through a number of laser techniques that prepare reactants in specific quantum states and probe the quantum state distributions of the resulting products. It is our belief that such state-to-state information gives the deepest insight into the forces that operate in the breaking of old bonds and the making of new ones.

    Space does not permit a full description of these projects, and I earnestly invite correspondence. The following examples are representative:

    The simplest of all neutral bimolecular reactions is the exchange reaction H H2 -> H2 H. We are studying this system and various isotopic cousins using a tunable UV laser pulse to photodissociate HBr (DBr) and hence create fast H (D) atoms of known translational energy in the presence of H2 and/or D2 and using a laser multiphoton ionization time-of-flight mass spectrometer to detect the nascent molecular products in a quantum-state-specific manner by means of an imaging technique. It is expected that these product state distributions will provide a key test of the adequacy of various advanced theoretical schemes for modeling this reaction.

    Analytical efforts involve the use of capillary zone electrophoresis, two-step laser desorption laser multiphoton ionization mass spectrometry, cavity ring-down spectroscopy, and Hadamard transform time-of-flight mass spectrometry. We believe these methods can revolutionize trace analysis, particularly of biomolecules in cells.

  • Shoucheng Zhang

    Shoucheng Zhang

    J. G. Jackson and C. J. Wood Professor of Physics and Professor, by courtesy, of Applied Physics

    BioCan states of matter take other forms besides the three familiar ones, namely gas, liquid, and solid?

    Indeed, laws of quantum mechanics predict many other interesting states of matter; for example, states displaying superconductivity and the quantum Hall effect. Professor Zhang's group investigates the quantum physics of many interacting electrons. Recently, his group predicted a new electronic state that displays the quantum spin Hall effect without any external magnetic fields.

    This effect has been subsequently observed experimentally. Beyond the fundamental importance of new states of matter, electronic circuits operating on these new principles could also offer alternatives to the current semiconductor chips, and extend the reach of Moore's law.

    Current areas of Focus:
    - High temperature superconductivity
    - Quantum Spintronics
    - Quantum spin Hall effect
    - Magnetism

  • Irina Zhuravleva

    Irina Zhuravleva

    Postdoctoral Research Fellow, Physics

    Current Research and Scholarly InterestsHigh-energy astrophysics, physics of intracluster medium, AGN feedback, turbulence, transport processes, high-resolution X-ray spectroscopy, radiative transfer

  • Zeyu Zheng

    Zeyu Zheng

    Ph.D. Student in Management Science and Engineering, admitted Autumn 2012
    Ph.D. Minor, Statistics

    BioI am a Ph.D. student in the Department of Management Science & Engineering at Stanford University. My research interests include data-oriented stochastic modeling and decision making, simulation, applied probability, statistical learning, and mathematical finance. I am on the job market in the 2017-2018 academic year.

    Please visit my personal website for more information.

  • Xueguang Zhou

    Xueguang Zhou

    Kwoh-Ting Li Professor in Economic Development and Senior Fellow at the Freeman Spogli Institute for International Studies

    Current Research and Scholarly InterestsInstitutional changes in contemporary Chinese society.

  • Evgeny Zatulovskiy

    Evgeny Zatulovskiy

    Postdoctoral Research Fellow, Biology

    Current Research and Scholarly InterestsCell cycle control

  • Jamil Zaki

    Jamil Zaki

    Assistant Professor of Psychology

    Current Research and Scholarly InterestsMy research focuses on the cognitive and neural bases of social behavior, and in particular on how people respond to each other's emotions (empathy), why they conform to each other (social influence), and why they choose to help each other (prosociality).

  • Yanshuo Zhang

    Yanshuo Zhang

    Ph.D. Student in Chinese, admitted Autumn 2010

    BioI am a PhD candidate in Chinese literature and culture with sub-fields and interests in history, art history, and anthropology. My broader research Interests lie in how cultural heritage and collective cultural past can be remade in the era of globalization. Well-versed in both classical and modern Chinese literature, English and French literature, and rich research experience in the fields of urbanization, ethnic theory and cultural modernity, I am currently working on a dissertation that investigates the issue of reform-era China (1980-present)'s social transformation and its impact on the traditionally coherent communities in the nation, exploring how these communities redefine their cultural identities for both representational and developmental purposes under China's neoliberal framework and the forces of globalization.