Showing 1-10 of 36 Results
Professor of Computer Science and, by courtesy, of Electrical Engineering
BioFedkiw's research is focused on the design of new computational algorithms for a variety of applications including computational fluid dynamics, computer graphics, and biomechanics.
Assistant Professor of Biology
Current Research and Scholarly InterestsWe are interested in understanding design principles within cells that contribute to the diversification of cellular form and function. Using a combination of genetic, biochemical, and live imaging approaches, we are investigating how the microtubule cytoskeleton is spatially organized and the mechanisms underlying organizational changes during development.
Assistant Professor of Genetics and of Bioengineering
Current Research and Scholarly InterestsThe Fordyce Lab is focused on developing new instrumentation and assays for making quantitative, systems-scale biophysical measurements of molecular interactions. Current research in the lab is focused on two main areas: using microfluidic tools we have already developed to build ground-up quantitative models of how gene expression is regulated, and developing new tools to explore protein-protein interactions.
Alice C. Fan
Assistant Professor of Medicine (Oncology) at the Stanford University Medical Center
Current Research and Scholarly InterestsDr. Fan is a physician scientist who studies how turning off oncogenes (cancer genes) can cause tumor regression in preclinical and clinical translational studies. Based on her findings, she has initiated clinical trials studying how targeted therapies affect cancer signals in kidney cancer and low grade lymphoma. In the laboratory, she uses new nanotechnology strategies for tumor diagnosis and treatment to define biomarkers for personalized therapy.
Assistant Professor of Electrical Engineering
Current Research and Scholarly InterestsWe are interested in designing and engineering new nanoplasmonic platforms, including those fabricated by top-down and bottom-up processes, for the purposes of developing new sensors, beam steering platforms, active on-chip optical components, and modulators. We are also interested in exploring new material platforms, utilizing stretchable and thin-film materials, that integrate optical and electronic functionality for the purposes of realizing new body-worn and bio-medical devices.
C. Garrison Fathman
Professor of Medicine (Immunology and Rheumatology), Emeritus
Current Research and Scholarly InterestsMy lab of molecular and cellular immunology is interested in research in the general field of T cell activation and autoimmunity. We have identified and characterized a gene (GRAIL) that seems to control regulatory T cell (Treg) responsiveness by inhibiting the Treg IL-2 receptor desensitization. We have characterized a gene (Deaf1) that plays a major role in peripheral tolerance in T1D. Using PBC gene expression, we have provisionally identified a signature of risk and progression in T1D.
David Mulvane Ehrsam and Edward Curtis Franklin Professor in Chemistry
BioMy research group studies complex molecular systems by using ultrafast multi-dimensional infrared and non-linear UV/Vis methods. A basic theme is to understand the role of mesoscopic structure on the properties of molecular systems. Many systems have structure on length scales large compare to molecules but small compared to macroscopic dimensions. The mesoscopic structures occur on distance scales of a few nanometers to a few tens of nanometers. The properties of systems, such as water in nanoscopic environments, room temperature ionic liquids, functionalized surfaces, liquid crystals, metal organic frameworks, water and other liquids in nanoporous silica, polyelectrolyte fuel cell membranes, vesicles, and micelles depend on molecular level dynamics and intermolecular interactions. Our ultrafast measurements provide direct observables for understanding the relationships among dynamics, structure, and intermolecular interactions.
Bulk properties are frequently a very poor guide to understanding the molecular level details that determine the nature of a chemical process and its dynamics. Because molecules are small, molecular motions are inherently very fast. Recent advances in methodology developed in our labs make it possible for us to observe important processes as they occur. These measurements act like stop-action photography. To focus on a particular aspect of a time evolving system, we employ sequences of ultrashort pulses of light as the basis for non-linear methods such as ultrafast infrared two dimensional vibrational echoes, optical Kerr effect methods, and ultrafast IR transient absorption experiments.
We are using ultrafast 2D IR vibrational echo spectroscopy and other multi-dimensional IR methods, which we have pioneered, to study dynamics of molecular complexes, water confined on nm lengths scales with a variety of topographies, molecules bound to surfaces, ionic liquids, and materials such as metal organic frameworks and porous silica. We can probe the dynamic structures these systems. The methods are somewhat akin to multidimensional NMR, but they probe molecular structural evolution in real time on the relevant fast time scales, eight to ten orders of magnitude faster than NMR. We are obtaining direct information on how nanoscopic confinement of water changes its properties, a topic of great importance in chemistry, biology, geology, and materials. For the first time, we are observing the motions of molecular bound to surfaces. In biological membranes, we are using the vibrational echo methods to study dynamics and the relationship among dynamics, structure, and function. We are also developing and applying theory to these problems frequently in collaboration with top theoreticians.
We are studying dynamics in complex liquids, in particular room temperature ionic liquids, liquid crystals, supercooled liquids, as well as in influence of small quantities of water on liquid dynamics. Using ultrafast optical heterodyne detected optical Kerr effect methods, we can follow processes from tens of femtoseconds to ten microseconds. Our ability to look over such a wide range of time scales is unprecedented. The change in molecular dynamics when a system undergoes a phase change is of fundamental and practical importance. We are developing detailed theory as the companion to the experiments.
We are studying photo-induced proton transfer in nanoscopic water environments such as polyelectrolyte fuel cell membranes, using ultrafast UV/Vis fluorescence and multidimensional IR measurements to understand the proton transfer and other processes and how they are influenced by nanoscopic confinement. We want to understand the role of the solvent and the systems topology on proton transfer dynamics.
Professor of Psychiatry and Behavioral Sciences at the Stanford University Medical Center, Emeritus
Current Research and Scholarly InterestsAutism and Asperger's Disorder.
Genetically-based neurodevelopmental disorder, including Velocardiofacial Syndrome, Smith-Magenis Syndrome, Williams Syndrome, and Fragile X Syndrome.
Intellectual Disability (mental retardation) and psychiatric disorders.
Developmental Language Disorder and Learning Disabilities.
Sensory impairment in children, including visual and hearing impairment.
Psychiatric aspects of medical illness and disability in children.