Location: Bowdoin / Dale Syphers

Physics

Dale A. Syphers

Professor of Physics
Chair of Physics Department

Contact Information

dsyphers@bowdoin.edu
207-725-3606
Physics And Astronomy

Searles Science Building - 321


Teaching this semester

PHYS 1140. Introductory Physics II, B

An introduction to the interactions of matter and radiation. Topics include the classical and quantum physics of electromagnetic radiation and its interaction with matter, quantum properties of atoms, and atomic and nuclear spectra. Laboratory work (three hours per week) includes an introduction to the use of electronic instrumentation.

PHYS 2900. Topics in Contemporary Physics

Seminar exploring recent results from research in all fields of physics. Focuses on discussion of papers in the scientific literature. Grading is Credit/D/Fail. One-half credit.

Teaching next semester

PHYS 1130. Introductory Physics I

An introduction to the conservation laws, forces, and interactions that govern the dynamics of particles and systems. Shows how a small set of fundamental principles and interactions allow us to model a wide variety of physical situations, using both classical and modern concepts. A prime goal of the course is to have the participants learn to actively connect the concepts with the modeling process. Three hours of laboratory work per week. To ensure proper placement, students are expected to have taken the physics placement examination prior to registering for Physics 1130.

PHYS 1510. Introductory Astronomy

A quantitative introduction to astronomy with emphasis on stars and the structures they form, from binaries to galaxies. Topics include the night sky, the solar system, stellar structure and evolution, white dwarfs, neutron stars, black holes, and the expansion of the universe. Several nighttime observing sessions required. Does not satisfy pre-med or other science departments’ requirements for a second course in physics.

PHYS 2410. Accident Reconstruction: Physics, The Common Good, and Justice

Introduces the applications of physics pertinent to accident reconstruction and analyzes three complex cases that were criminal prosecutions. Instructor analyzes the first case to show how the physics is applied, the second is done in tandem with students, and the third is mostly analyzed by the students,using what they have learned. The report on this third case serves as the final project for the course. While Physics 1130 is the only prerequisite for the course, familiarity with vectors and matrices, or a desire to learn how to use them, is necessary.

PHYS 2510. Astrophysics

A quantitative discussion that introduces the principal topics of astrophysics, including stellar structure and evolution, planetary physics, and cosmology.



Dale Syphers: Bowdoin College: Physics

Education

Ph.D. in experimental Solid State Physics from Brown University.
M.Sc. in Physics from University of Massachusetts, Amherst.
B.S. in Physics from University of Massachusetts, Amherst.

Field of Research

High magnetic field effects and low temperature phenomena associated with electronic systems of restricted dimensionalities, including magneto-transport, Integer and Fractional Quantum Hall Effect, resonant tunneling structures, and properties of novel semiconductor systems.




Quantum Lifetime of Two-Dimensional Holes, J. P. Eisenstein, D. Syphers, L.N. Pfeiffer and K.W. West, Solid State Communications 143, pp. 365-368 (2007).

Inhomogeneous Strain Relaxation in Triple‑Barrier p‑Si/SiGe Nanostructures, C. D. Akyüz, H. T. Johnson, A. Zaslavsky, L. B. Freund, and D. A. Syphers , Physical Review B 60, 16597 (1999).

Inhomogeneous Strain in Individual Quantum Dots Probed by Transport Measurements, C. D. Akyüz, A. Zaslavsky, L. B. Freund, D. A. Syphers, and T. O. Sedgwick, Applied Physics Letters, 72,  1739, (1998) .

In-Plane Valence Band Nonparabolicity and Anisotropy in Strained SiGe Quantum Wells, A. Zaslavsky, T. P. Smith III, D. A. Grutzmacher, S. Y. Lin, T. O. Sedgwick, and D. A. Syphers, Phys. Rev. B 48, 15112 (1993).

Similarities between the Landau Spectra and Dispersion Relations in Si/Si1-xGex Quantum Wells Investigated by Magnetotunneling Spectroscopy, U. Gensser, V. P. Kesan, D. A. Syphers, T. P. Smith III, S. S. Iyer, and E. S. Yang, Appl. Phys. Lett. 63, 545 (1993).

Probing Band Structure Anisotropy using Angle-Resolved Magnetotunneling Spectroscopy, U. Gensser, V.P. Kesan, D.A. Syphers, T.P. Smith III, S.S. Iyer, and E. S. Yang, Physical Review Letters 67, 3828 (1991).

Comparisons of Edge State vs. Bulk Conduction in the Quantum Hall Regime, D. A. Syphers, J. H. Killoran, H. E. Brakewood and F. Reis, Surface Science 229, 37 (1990).                

The High Temperature Behavior of the Fractional Quantum Hall Effect,  J. E. Furneaux, D. A. Syphers, J. Poulin and B. F. Mason, Surface Science 229, 7 (1990).

Fractional Quantum Hall Effect with an Added Parallel Magnetic Field,  J. E. Furneaux, D. A. Syphers and A. G. Swanson, Physical Review Letters 63, 1098 (1989).

The Fractional Quantum Hall Effect in a Tilted Magnetic Field,  D. A.  Syphers and J. E. Furneaux, Solid State Commun. 65, 1513 (1988).