2013-14 Catalog

This course is an introduction to the application of engineering principles from solid and fluid mechanics to the study of biological systems. The course emphasizes the organismal, rather than the molecular, level of complexity. It draws on a wide array of biological phenomena from animals and plants, and is not intended as a technical introduction to medically related biomechanics. Topics include scaling and heuristic modeling of biological systems; fundamental properties of biological solids and fluids; viscoelasticity; drag and locomotion; biological pumps; and biology-inspired engineering. Textbook: Life's Devices: The Physical World of Animals and Plants by Steven Vogel. Given in alternate years; not offered 2013-14.

Introduction to the basic concepts of applying engineering principles of solid and fluid mechanics to the study of biological systems. The course emphasizes the organismal, rather than the molecular, level of complexity. It draws on a wide array of biological phenomena from plants and animals, and is not intended as a technical introduction to medically related biomechanics. Topics may include fundamental properties of solids and fluids, viscoelasticity, drag, biological pumps, locomotion, and muscle mechanics. Not offered 2013-14.

Lectures and experiments demonstrating the bulk and surface properties of materials; review of the major classes of materials-metals, ceramics, polymers-with a view to their relevance to the biomedical field. Special materials and processes of relevance will also be discussed, e.g., hydrogels, fabrics, thin films, bioresorbable and bioerodible materials, cardiac jelly, etc. Proteins, cells, tissues and their interactions with materials; key concepts in reactions between host materials and implants, including inflammation, coagulation, and tumorigenesis. Testing and degradation of biomaterials, material applications in medicine and dentistry, especially orthopedic, cardiovascular, ophthalmologic, oral and maxillofacial implants, and artificial organs. Not offered 2013-14.

This course will explore our current knowledge based on the fundamental properties of nerves and synapses, and present the bioengineering principles and developments that drive new avenues of research in cell physiology. We will present the tools used for making current research measurements, dissect the protocols, equipment, and physics that enable the approaches, and discuss the current limitations that limit performance. Students will be expected to engage in one of the technologies and develop a greater understanding in both written and oral presentations to the class. Areas to be investigated will be drawn from electrophysiology, single channel recording, imaging with indicator dyes, and screening technologies. Not offered 2013-14.

This course describes how to use statistical mechanics and nonlinear dynamics to model self-organized spatiotemporal pattern formation and transition kinetics in complex biological systems. These phenomena include Turing patterns in morphogenesis, oscillations by excitation-relaxation dynamics in cell signaling networks, and the propagation of traveling waves observed in action potentials and collective cell migration. This course emphasizes the construction of phenomenological models for stochastic nonlinear behavior in biological systems, including derivation of the corresponding Turing analysis, Langevin equation, Fokker-Planck equation, and Kramer theory. Not offered 2013-14.

This laboratory course accompanies BE/APh 161 and is built around experiments that amplify material covered in that course. Particular topics include background on techniques from molecular biology, mechanics of lipid bilayer vesicles, DNA packing in viruses, fluorescence microscopy of cells, experiments on cell motility, and the construction of genetic networks. Not offered 2013-14.

Topics include Fourier optics, scattering theories, shot noise limit, energy transitions associated with fluorescence, phosphorescence, and Raman emissions. Study of coherent anti-Stokes Raman spectroscopy (CARS), second harmonic generation and near-field excitation. Scattering, absorption, fluorescence, and other optical properties of biological tissues and the changes in these properties during cancer progression, burn injury, etc. Specific optical technologies employed for biomedical research and clinical applications: optical coherence tomography, Raman spectroscopy, photon migration, acousto-optics (and opto-acoustics) imaging, two photon fluorescence microscopy, and second- and third-harmonic microscopy. Given in alternate years; not offered 2013-14.

Participants will read, discuss, and critique papers on diverse topics within the bioengineering literature. Enrollment limited to 10 students; undergraduates with instructor's permission. Offered in alternate years; not offered 2013-14.

Lectures and discussions on the underlying principles behind digital, video, differential interference contrast, phase contrast, confocal, and two-photon microscopy. The course will begin with basic geometric optics, characteristics of lenses and microscopes, and principles of accurate imaging. Specific attention will be given to how different imaging elements such as filters, detectors, and objective lenses contribute to the final image. Course work will include critical evaluation of published images and design strategies for simple optical systems. Emphasis in the second half of the course will be placed on the analysis and presentation of two- and three-dimensional images. No prior knowledge of microscopy will be assumed. Not offered 2013-14.

Micro-electro-mechanical systems (MEMS) have been broadly used for biochemical, medical, RF, and lab-on-a-chip applications. This course will cover both MEMS technologies (e.g., micro- and nanofabrication) and devices. For example, MEMS technologies include anisotropic wet etching, RIE, deep RIE, micro/nano molding and advanced packaging. This course will also cover various MEMS devices used in microsensors and actuators. Examples will include pressure sensors, accelerometers, gyros, FR filters, digital mirrors, microfluidics, micro total-analysis system, biomedical implants, etc. Not offered 2013-14.

Discussion and laboratory-based course covering the practical use of the confocal microscope, with special attention to the dynamic analysis of living cells and embryos. Course will begin with basic optics, microscope design, Koehler illumination, and the principles of confocal microscopy. After introductory period, the course will consist of semi-independent weeklong modules organized around different imaging challenges. Early modules will focus on three-dimensional reconstruction of fixed cells and tissues, with particular attention being paid to accurately imaging very dim samples. Later modules will include time-lapse confocal analysis of living cells and embryos, including Drosophila, zebra fish, chicken, and s embryos. Dynamic analysis will emphasize the use of fluorescent proteins. No prior experience with confocal microscopy will be assumed; however, a basic working knowledge of microscopes is highly recommended. Preference is given to graduate students who will be using confocal microscopy in their research. Not offered 2013-14.

The class covers the theoretical and practical aspects of optogenetic control and complementary readout methods in molecular, cellular, and systems neuroscience. Topics include opsin design (including natural and artificial sources), delivery (genetic targeting, viral transduction), light activation requirements (power requirements, wavelength, fiberoptics, LEDs), compatible readout modalities (electrophysiology, imaging) and applications to neuronal circuits (case studies based on recent literature). The class offers hands-on lab exposure for opsin delivery to the mammalian brain and recording of brain activity modulated by light. Not offered 2013-14.

Physical principles of unsteady fluid momentum transport: equations of motion, dimensional analysis, conservation laws. Unsteady vortex dynamics: vorticity generation and dynamics, vortex dipoles/rings, wake structure in unsteady flows. Life in moving fluids: unsteady drag, added-mass effects, virtual buoyancy, bounding and schooling, wake capture. Thrust generation by flapping, undulating, rowing, jetting. Low Reynolds number propulsion. Bioinspired design of propulsion devices. Not offered 2013-14.

This course provides an intensive research introduction to current projects in physical and synthetic biology. Projects are based on current research directions in participating labs, including those of visiting biologists invited for the course. Representative classes of experiments include quantitative fluorescent microscopy of cell and organelle dynamics, single-cell measurement of genetic expression levels during development, and design and construction of biological circuits in microbes. Graded pass/fail. Not offered 2013-14.