School of Humanities and Sciences
Showing 201-250 of 377 Results
-
Raghu Mahajan
Senior Research Scientist
Current Research and Scholarly InterestsMy research interests are wide-ranging:
1) In the context of gravity, how does spacetime emerge from its dual quantum system? How does the dual quantum system encode the answers to questions that involve local physics in semi-classical gravity? How do you avoid the "firewall" paradox in the context of black-hole evaporation?
2) How do you calculate electrical and heat currents in strongly-coupled many-body systems? How do you explain the linear-in-temperature resistivity in high-temperature cuprates?
3) Use tensor network methods to study electrical and heat transport and also the real-time dynamics of systems out of thermal equilibrium. -
Agostino Marinelli
Assistant Professor of Photon Science, of Particle Physics and Astrophysics and, by courtesy, of Applied Physics
Current Research and Scholarly InterestsX-ray free-electron lasers and applications.
Advanced particle accelerators. -
Thomas Markland
Associate Professor of Chemistry
Current Research and Scholarly InterestsOur research centers on problems at the interface of quantum and statistical mechanics. Particular themes that occur frequently in our research are hydrogen bonding, the interplay between structure and dynamics, systems with multiple time and length-scales and quantum mechanical effects. The applications of our methods are diverse, ranging from chemistry to biology to geology and materials science. Particular current interests include proton and electron transfer in fuel cells and enzymatic systems, atmospheric isotope separation and the control of catalytic chemical reactivity using electric fields.
Treatment of these problems requires a range of analytic techniques as well as molecular mechanics and ab initio simulations. We are particularly interested in developing and applying methods based on the path integral formulation of quantum mechanics to include quantum fluctuations such as zero-point energy and tunneling in the dynamics of liquids and glasses. This formalism, in which a quantum mechanical particle is mapped onto a classical "ring polymer," provides an accurate and physically insightful way to calculate reaction rates, diffusion coefficients and spectra in systems containing light atoms. Our work has already provided intriguing insights in systems ranging from diffusion controlled reactions in liquids to the quantum liquid-glass transition as well as introducing methods to perform path integral calculations at near classical computational cost, expanding our ability to treat large-scale condensed phase systems. -
Todd Martinez
David Mulvane Ehrsam and Edward Curtis Franklin Professor of Chemistry and Professor of Photon Science
Current Research and Scholarly InterestsAb initio molecular dynamics, photochemistry, molecular design, mechanochemistry, graphical processing unit acceleration of electronic structure and molecular dynamics, automated reaction discovery, ultrafast (femtosecond and attosecond) chemical phenomena
-
Susan K. McConnell
Susan B. Ford Professor, Emerita
Current Research and Scholarly InterestsSusan McConnell has studied the cellular and molecular mechanisms that underlie the development of the mammalian cerebral cortex. Her work focused on the earliest events that pattern the developing forebrain, enable neural progenitors to divide asymmetrically to generate young neurons, propel the migration of postmitotic neurons outward into their final positions, and sculpt the fates and phenotypes of the neurons as they differentiate.
-
Fiorenza Micheli
David and Lucile Packard Professor of Marine Science, Professor of Oceans, Senior Fellow at the Woods Institute for the Environment and Professor, by courtesy, of Biology
Current Research and Scholarly InterestsDr Fiorenza Micheli is a marine ecologist and conservation biologist conducting research and teaching at the Hopkins Marine Station of Stanford University. Micheli’s research focuses on the processes shaping marine communities and incorporating this understanding in the management and conservation of marine ecosystems. She is a Pew Fellow, a fellow of the California Academy of Science and the Aldo Leopold Leadership Program, and past president of the Western Society of Naturalists.
-
David Miller
W.M. Keck Foundation Professor of Electrical Engineering and Professor, by courtesy, of Applied Physics
Current Research and Scholarly InterestsDavid Miller’s research interests include the use of optics in switching, interconnection, communications, computing, and sensing systems, physics and applications of quantum well optics and optoelectronics, and fundamental features and limits for optics and nanophotonics in communications and information processing.
-
W. E. Moerner
Harry S. Mosher Professor
Current Research and Scholarly InterestsLaser spectroscopy and microscopy of single molecules to probe biological systems, one biomolecule at a time. Primary thrusts: fluorescence microscopy far beyond the optical diffraction limit (PALM/STORM/STED), methods for 3D optical microscopy in cells, and trapping of single biomolecules in solution for extended study. We explore protein localization patterns in bacteria, structures of amyloid aggregates in cells, signaling proteins in the primary cilium, and dynamics of DNA and RNA.
-
Andrea Montanari
John D. and Sigrid Banks Professor and Professor of Mathematics
BioI am interested in developing efficient algorithms to make sense of large amounts of noisy data, extract information from observations, estimate signals from measurements. This effort spans several disciplines including statistics, computer science, information theory, machine learning.
I am also working on applications of these techniques to healthcare data analytics. -
Harold Mooney
Paul S. and Billie Achilles Professor in Environmental Biology, Emeritus
BioStanford ecologist Harold “Hal” Mooney is the Paul S. Achilles Professor of Environmental Biology, emeritus, in the School of Humanities and Science’s Department of Biology and senior fellow, emeritus, with the Stanford Woods Institute as well as the Freeman Spogli Institute for International Studies. Mooney helped pioneer the field of physiological ecology and is an internationally recognized expert on environmental sciences. Through his six-decade academic career, Mooney has demonstrated how plant species and groups of species respond to their environments and developed research methodologies for assessing how plants interact with their biotic environments. To date he has authored more than 400 scientific books, papers and articles.
Mooney's recent research focuses on assessing the impacts of global environmental change on terrestrial ecosystems, especially on ecosystem function, productivity and biodiversity. Recent research includes studying the environmental and social consequences of industrialized animal production systems and examining factors that promote the invasion of non-indigenous plant species.
Mooney has played an international leadership role in numerous research settings, especially with problems related to biodiversity, invasive species, global warming and Mediterranean climates. In addition, he has been active in building up worldwide communities and networks of ecologists and scientists in other disciplines and arranging international conferences on the environment. He played a central role in the International Geosphere-Biosphere Program (IGBP), building up an international organization of scientists and having an influential part in setting the guidelines for the formulation of environmental policies. He also has advanced numerous international research programs as Secretary General and Vice-President of the International Council for Science (ICSU).
Mooney earned his Ph.D. from Duke University in 1960 and started as an assistant professor at UCLA that same year. In 1968 he was recruited to Stanford University, where he was later appointed the Paul S. Achilles Professor of Environmental Biology in the School of Humanities and Science’s Department of Biology. A senior fellow with the Stanford Woods Institute as well as the Freeman Spogli Institute for International Studies, Mooney has led a wide range of national and international scientific activities related to environment and conservation.
Notable roles included coordinating the 1995 Global Biodiversity Assessment, co-chairing the Assessment Panel of the 2005 Millennium Ecosystem Assessment, establishing and leading the Global Invasive Species Program and serving as lead review editor for the ongoing global assessment of the Intergovernmental Platform on Biodiversity and Ecosystem Services. His many accolades and awards include the 1990 ECI Prize in terrestrial ecology, the 1992 Max Planck Research Award in biosciences, the 1996 Eminent Ecologist Award from the Ecological Society of America, the 2000 Nevada Medal, the 2002 Blue Planet Prize, the 2007 Ramon Margalef Prize in Ecology, the 2008 Tyler Prize, the 2008 BBVA Foundation Award for Biodiversity Conservation, and the 2010 Volvo Environment Prize. -
Erin Mordecai
Associate Professor of Biology and Senior Fellow at the Woods Institute for the Environment
Current Research and Scholarly InterestsOur research focuses on the ecology of infectious disease. We are interested in how climate, species interactions, and global change drive infectious disease dynamics in humans and natural ecosystems. This research combines mathematical modeling and empirical work. Our main study systems include vector-borne diseases in humans and fungal pathogens in California grasses.
-
Ashby Morrison
Associate Professor of Biology
Current Research and Scholarly InterestsOur research interests are to elucidate the contribution of chromatin to mechanisms that promote genomic integrity.
-
Mary Beth Mudgett
Senior Associate Dean for the Natural Sciences and Susan B. Ford Professor
Current Research and Scholarly InterestsMy laboratory investigates how bacterial pathogens employ proteins secreted by the type III secretion system (TTSS) to manipulate eukaryotic signaling to promote disease. We study TTSS effectors in the plant pathogen Xanthomonas euvesicatoria, the causal agent of bacterial spot disease of pepper and tomato. For these studies, we apply biochemical, cell biological, and genetic approaches using the natural hosts and model pathosystems.
-
William Nelson
Rudy J. and Daphne Donohue Munzer Professor in the School of Medicine, Emeritus
Current Research and Scholarly InterestsOur research objectives are to understand the cellular mechanisms involved in the development and maintenance of epithelial cell polarity. Polarized epithelial cells play fundamental roles in the ontogeny and function of a variety of tissues and organs.
-
Lauren O'Connell
Assistant Professor of Biology
Current Research and Scholarly InterestsThe O'Connell lab studies how genetic and environmental factors contribute to biological diversity and adaptation. We are particularly interested in understanding (1) how behavior evolves through changes in brain function and (2) how animal physiology evolves through repurposing existing cellular components.
-
Art Owen
Max H. Stein Professor
Current Research and Scholarly InterestsStatistical methods to analyze large data matrices in bioinformatics
-
Julia Palacios
Associate Professor of Statistics, of Biomedical Data Science and, by courtesy, of Biology
BioDr. Palacios seek to provide statistically rigorous answers to concrete, data driven questions in evolutionary genetics and public health . My research involves probabilistic modeling of evolutionary forces and the development of computationally tractable methods that are applicable to big data problems. Past and current research relies heavily on the theory of stochastic processes, Bayesian nonparametrics and recent developments in machine learning and statistical theory for big data.
-
Stephen Palumbi
Jane and Marshall Steel Jr. Professor of Marine Sciences, Professor of Oceans and of Biology
Current Research and Scholarly InterestsWe're interested in ecological, evolutionary, and conservation questions related to marine (and sometimes terrestrial) organisms and ecosystems. We use evolutionary genetics and molecular ecology techniques, and our fieldwork takes us all around the world. Currently, we're studying coral diversity, the adaptive potential of corals in response to climate change, the movement of organisms between marine reserves, genetic changes in abalone in response to environmental.
-
Chenjie Pan
Basic Life Res Scientist
BioI obtained my PhD from Dr. Xiaodong Wang's lab, National Institute of Biological Sciences, Beijing/Tsinghua University. My major work during PhD is on the biochemical mechanism of myelin breakdown. I have expertise in in-tissue immunoprecipitation and pain behavior. Now I am working on axon guidance, degeneration, and plasticity in Dr. Marc Tessier-Lavigne's lab in Department of Biology.
-
Jonathan Payne
Dorrell William Kirby Professor, Senior Associate Dean for Faculty Affairs, Senior Fellow at the Woods Institute for the Environment and Professor, by courtesy, of Biology,
Current Research and Scholarly InterestsMy goal in research is to understand the interaction between environmental change and biological evolution using fossils and the sedimentary rock record. How does environmental change influence evolutionary and ecological processes? And conversely, how do evolutionary and ecological changes affect the physical environment? I work primarily on the marine fossil record over the past 550 million years.
-
Kabir Peay
Director of the Earth Systems Program, Associate Professor of Biology, of Earth System Science and Senior Fellow at the Woods Institute for the Environment
Current Research and Scholarly InterestsOur lab studies the ecological processes that structure natural communities and the links between community structure and the cycling of nutrients and energy through ecosystems. We focus primarily on fungi, as these organisms are incredibly diverse and are the primary agents of carbon and nutrient cycling in terrestrial ecosystems. By working across multiple scales we hope to build a 'roots-to-biomes' understanding of plant-microbe symbiosis.
-
Robert Pecora
Professor of Chemistry, Emeritus
Current Research and Scholarly InterestsThe development of the basic principles behind the dynamic light scattering (DLS) technique and its application to a wide variety of liquid systems is one of Pecora's outstanding contributions to physical chemistry. DLS is now an indispensable tool in the repertoire of polymer, colloid and biophysical chemists. It is generally accepted to be one of the best methods for measuring the mutual diffusion coefficients and, in dilute systems, the hydrodynamic sizes of polymers and particulates in solution or suspension. It is widely used, among other things, for studying size distributions of polymer and colloid dispersions; for testing theories of polymer dynamics in dilute and concentrated systems; and for studying interactions between macromolecules and colloidal particles in liquid dispersions. The basic work that established the foundation of this technique was done in the 1960s. Pecora has revisited this area over the years-formulating theories, for instance, of scattering from hollow spheres, large cylindrically symmetric molecules and wormlike chains.
An experimental program began in the early seventies resulted in a now classic series of studies on the rotational dynamics of small molecules in liquids. This work, utilizing mainly depolarized DLS and carbon 13 nuclear magnetic relaxation, has had a wide impact in the area of liquid state dynamics.
It was also during this period that the theoretical foundation for the fluorescence correlation spectroscopy technique (FCS) was formulated. Because of recent advances in equipment and materials, this technique has recently been revived and is now a powerful tool in biophysics.
The experimental and theoretical techniques developed for the study of the dynamics of relatively simple small molecule liquids have been used to investigate more complex systems such as the rotation of small molecule solvents in glassy and amorphous polymers. The resonance- enhanced depolarized light scattering technique was also developed in this period.
Extensive studies using depolarized dynamic light scattering (using the Fabry-Perot interferometer) as well as photon correlation spectroscopy, NMR, FCS and small angle X-ray scattering to the dynamics of oligonucleotides have determined the hydrodynamic diameter of DNA and the internal bending angles of the bases. They also provided support for relations relating hydrodynamic parameters to molecular dimensions for short rodlike molecules and “polyelectrolyte effects” on the translational and rotational motions of these highly charged molecules.
A major area of experimental and theoretical study has been the study of the dynamics of rigid and semirigid rodlike polymers in both dilute and semidilute dispersions. The work on translation and rotation of poly (-benzyl-L-glutamate) in semidilute solution is a foremost early work in this area.
The Pecora group has synthesized and studied the dynamics of model
rigid rod/sphere composite liquids. Studies of the translation of dilute spheres through solutions of the rods as functions of the rod and sphere sizes and the rod concentrations have provided the stimulus for more experiment and theoretical work in this area. Transient electric birefringence decay studies of the rotation of dilute rigid rod polymers in suspensions of comparably sized spherical particles have revealed scaling laws for the rod rotation.
A unique feature of part of this work on rigid and semirigid rodlike polymers is the utilization of genetic engineering techniques to construct a monodisperse, homologous series of DNA restriction fragments. These biologically-produced fragments have served as well-characterized model macromolecules for solution studies of the dynamics of semirigid rodlike polymers.
The well-regarded book of Pecora and Berne on dynamic light scattering, first published in 1976, has become a major reference work. It is now a Dover paperback. -
Vahe Petrosian
Professor of Physics and of Applied Physics
BioHow do things evolve in the universe? How are particles accelerated in the universe?
Professor Petrosian’s research covers many topics in the broad area of theoretical astrophysics and cosmology, with a strong focus on high-energy astrophysical processes.
Cosmological studies deal with global properties of the universe, where the main focus is the understanding of the evolution of the universe at high redshifts, through studies of the evolutions of population of sources such as galaxies and quasars or active galactic nuclei, gamma-ray bursts, using new statistical techniques developed in collaboration with Prof. B. Efron of the Department of Statistics. Another area of research is the use of gravitational lensing in measuring mass in the universe.
High-energy astrophysics research involves interpretation of non-thermal astronomical sources where particles are accelerated to very high energies and emit various kinds of radiation. These processes occur on many scales and in all sorts of objects: in the magnetosphere of planets, in the interplanetary space, during solar and stellar flares, in the accretion disks and jets around stellar-size and super-massive black holes, at centers of galaxies, in gamma-ray bursts, in supernovae, and in the intra-cluster medium of clusters of galaxies. Plasma physics processes common in all these sources for acceleration of particles and their radiative signature is the main focus of the research here. -
Dmitri Petrov
Michelle and Kevin Douglas Professor in the School of Humanities and Sciences
Current Research and Scholarly InterestsEvolution of genomes and population genomics of adaptation and variation
-
Eric Pop
Pease-Ye Professor, Professor of Electrical Engineering, Senior Fellow at the Precourt Institute for Energy and Professor, by courtesy, of Materials Science and Engineering and of Applied Physics
Current Research and Scholarly InterestsThe Pop Lab explores problems at the intersection of nanoelectronics and nanoscale energy conversion. These include fundamental limits of current and heat flow, energy-efficient transistors and memory, and energy harvesting via thermoelectrics. The Pop Lab also works with novel nanomaterials like carbon nanotubes, graphene, BN, MoS2, and their device applications, through an approach that is experimental, computational and highly collaborative.
-
Manu Prakash
Associate Professor of Bioengineering, Senior Fellow at the Woods Institute for the Environment and Associate Professor, by courtesy, of Oceans and of Biology
BioWe use interdisciplinary approaches including theory and experiments to understand how computation is embodied in biological matter. Examples include cognition in single cell protists and morphological computing in animals with no neurons and origins of complex behavior in multi-cellular systems. Broadly, we invent new tools for studying non-model organisms with significant focus on life in the ocean - addressing fundamental questions such as how do cells sense pressure or gravity? Finally, we are dedicated towards inventing and distributing “frugal science” tools to democratize access to science (previous inventions used worldwide: Foldscope, Abuzz), diagnostics of deadly diseases like malaria and convening global citizen science communities to tackle planetary scale environmental challenges such as mosquito surveillance or plankton surveillance by citizen sailors mapping the ocean in the age of Anthropocene.
-
Jonathan Pritchard
Bing Professor of Population Studies, Professor of Genetics and Biology
Current Research and Scholarly InterestsWe are interested in a broad range of problems at the interface of genomics and evolutionary biology. One current focus of the lab is in understanding how genetic variation impacts gene regulation and complex traits. We also have long-term interests in using genetic data to learn about population structure, history and adaptation, especially in humans.
FOR UP-TO-DATE DETAILS ON MY LAB AND RESEARCH, PLEASE SEE: http://pritchardlab.stanford.edu -
Xiaoliang Qi
Professor of Physics
BioMy current research interest is the interplay of quantum entanglement, quantum gravity and quantum chaos. The characterization of quantum information and quantum entanglement has provided novel understanding to space-time geometry, and relate the dynamics of chaotic many-body systems to the dynamics of space-time, i.e. quantum gravity theory. Based on recent progress in holographic duality (also known as AdS/CFT), my goal is to use tools such as tensor networks and solvable models to provide more microscopic understanding to the emergent space-time geometry from quantum states and quantum dynamics.
I am also interested in topological states and topological phenomena in condensed matter systems.
You can find my recent research topics in some talks online:
http://online.kitp.ucsb.edu/online/chord18/opgrowth/
https://www.youtube.com/watch?v=__9VBaLfC6Y&t=42s
http://online.kitp.ucsb.edu/online/qinfo_c17/qi/
