Spring Meeting of the Chesapeake Section of the American Association of Physics Teachers
March 30, 31
Towson University
| Meeting Logistics | Workshop | Banquet | Presentations |
About Towson
Towson University, located in the heart of Towson, Md., welcomes visitors to campus. Each year more than 800,000 people come to Towson to participate in the university’s many educational, scholarly, cultural, recreational and athletic activities.
Towson is within easy easy driving distance of major East Coast cities. The campus is eight miles north of downtown Baltimore, about an hour north of Washington, D.C., and four hours south of New York City. Baltimore International Airport, located about 45 minutes south of Baltimore, handles air traffic from all major carriers. Train service is available via Amtrak in and out of Baltimore’s Penn Station, 20 minutes south of campus.
| Campus Map | Local Weather | Parking - Please park in the Union Parking Garage for all events. |
Directions
From I-95 (northbound and southbound): Take the Baltimore Beltway I-695 west (toward Towson). Take exit 25, Charles Street, south. Proceed approximately 1.7 miles. Turn left on Towsontown Boulevard and proceed to the first stoplight. Turn right on Osler Drive and make the first right to the Enrollment Services Center parking lot.
From I-83 (northbound and southbound): Take the Baltimore Beltway I-695 east (toward Towson). Take exit 25, Charles Street, south. Proceed approximately 1.7 miles. Turn left on Towsontown Boulevard and proceed to the first stoplight. Turn right on Osler Drive and make the first right to the Enrollment Services Center parking lot.
From I-70 (eastbound): Take the Baltimore Beltway I-695 north (toward Towson). Take exit 25, Charles Street, south. Proceed approximately 1.7 miles. Turn left on Towsontown Boulevard and proceed to the first stoplight. Turn right on Osler Drive and make the first right to the Enrollment Services Center parking lot.
Housing
There are many hotels located around the Towson Campus. Below is a list of possible housing locations with comments
| Hotel | Comment | Contact Information |
| Burkeshire Marriott | Pricey, but actually located on the TU Campus. You can walk to all events | 410-324-8100 |
| Sheraton Baltimore North | A bit pricey, just down the street from TU | 410-321-7400 |
| Holiday Inn - Towson | Less Expensive option, will need to drive to TU (about 5 - 10 minutes) | 410-823-4410 |
| Comfort Inn | Less Expensive option, will need to drive to TU (about 5 -10 minutes) | 410-882-0900 |
| Ramada Inn | Less Expensive option, will need to drive to TU (about 5 -10 minutes) | 410-823-8750 |
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Scanning Probe Microscopy: Applications in an
Undergraduate Environment |
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Smith Hall, Room 448, 5:00 - 7:00 pm, March 30, 2007 Have you seen images taken by a scanning tunneling microscope or atomic force microscope? Would you like to get hands on experience with these instruments? This workshop will give a theoretical description of how these microscopes work and provide you with hands on experience using the systems. Emphasis will be placed on how these instruments can be used in an undergraduate environment. Robert Kain, the East Coast Sales Manager for Nanoscience Instruments will be bringing a demo system for attendees to work on. |
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The workshop will take place in Room 448 of Smith Hall from 5:00 - 7:00 on Friday, March 30.
The banquet will be held on Friday, March 30 in Room 554 in Smith Hall at Towson University between 7:00 - 9:00. The speaker will be Dr. Jonah Erlebacher from Johns Hopkins University. Dinner will cost $22/person. The menu is as follows:
| Entree | Honey Orange BBQ Chicken |
| Starch | Garlic Mashed Potatoes |
| Vegetable | Mixed Stir Fry |
| Desert | Coffee and Cake |
If you have a specific meal restriction or request, please contact Dave Schaefer.
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Nanomaterials Inspiration from Ancient Materials
Jonah Erlebacher
Department of Materials Science and Engineering
Sometimes, modern technology really is influenced by historical craft! In this presentation, we will examine a new material – nanoporous gold (NPG). NPG is an ultraporous form of gold in which the pores are only tens of atoms wide. The material is formed by a chemical process called dealloying in which one element of a silver/gold alloy is selectively etched away, a technique related to the ancient surface finishing method known as depletion gilding. NPG is beginning to find applications in a wide variety of fields, from biosensors to fuel cells and the hydrogen economy.
One reason that nanoporous gold is beginning to be accepted as a viable “nanotechnology” is that a new form for this material has been developed in the form of inexpensive free-standing membranes made from artists’ silver/gold leaf. Leaf is metal in the form of a thin sheet made by hammering a metal into a foil only a few thousand atoms thick, and we like to believe that ours is one of the first new, non-decorative, applications for this traditional fabrication method to appear in quite some time (millennia?!).
By using nanoporous gold as a case study, we will introduce modern trends in nanotechnology and materials science, examine cutting-edge applications for old materials, and forge links between modern technology and ancient craft.
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If you are interested in presenting at this year's meeting, please contact David Schaefer (dschaefer@towson.edu 410 - 704 - 3007) or Rhett Herman (rherman@RADFORD.EDU). Presentations can take the form of a 20 minute oral presentation or a short demonstration.
Presentations will begin on Saturday, March 31 at 9:00 am in Smith Hall, Room 420. Registration and refreshments will begin at 8:30 in Room 554 of Smith Hall. (Please note that the list below does not indicate the exact order of the presentations.)
| Title/Presenter | Abstract |
| Orbits on a Concave Frictionless Surface
by Midshipman Sean A. Genis, U.S. Naval Academy, Annapolis, MD* *Project Advisor: Prof. Carl E. Mungan |
The equations of motion of a puck sliding frictionlessly on a parabolic dish can be straightforwardly deduced using the conservation laws of mechanical energy and angular momentum. But the solution of these equations requires that they be recast into the form of Newton's second law. I illustrate why this is necessary and how it can be done with a simpler example. A rich variety of orbital patterns of the puck is found by numerically solving the resulting nonlinear equations. |
| A Portrait of Physics and Bureaucracy
Harold Geller , George Mason University |
I will give an overview of my adventures as the new associate chair of the physics department at George Mason University. I will discuss dealing with faculty and scheduling courses, organizing a state science fair, establishing a new observatory, dealing with a new college organization, responding to state requests for new higher education standards of learning, and how it all effects teaching. |
| Space-time Invariance and Quantum Gravity
Dr. Harold Alden Williams, Planetarium coordinator and physics & geology lab coordinator, adjunct professor, and vice president of Montgomery College staff union, AFSCME local 2380 |
Or how Max Planck in 1899 wrote a paper which still on the cutting edge today, and how we can share this via dimensional analysis with undergraduates in the first or second physics or astronomy course. This is a focused part of a larger talk that I give yearly in the planetarium as a public program, but for the CSAAPT it will be done briefer and at a higher level than the general public talk. |
| Faraday,
Maxwell, and Lines of Force
James O'Connell, Frederick Community College, Frederick, Maryland, 21702, jsoconnell@aol.com |
One hundred and fifty years ago, the physical chemist, Michael Faraday, first met the mathematical physicist, Clerk Maxwell, newly arrived in London. In this historical essay I want to trace the thought process that led them to the development of electromagnetic theory using analogy, symmetry, and the new applications of vector calculus. Faraday's experimental work on magnetically induced electric currents led him to picture all electric and magnetic interactions as through lines of force. Maxwell quantified this field theory applying vector calculus. Two of the resulting equations produced the conclusion that visible light is an electromagnetic wave, whose velocity is given by the product of electric and magnetic static-force constants.
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Mathematica Examples from the LC Undergraduate Physics Curriculum John Eric Goff, Lynchburg College, Lynchburg, VA 24501 |
I will present examples of how the symbolic software Mathematica is used at all levels of the Lynchburg College physics curriculum. We have imbued computational techniques to various degrees in all of our physics courses, both for pedagogical visualization and for student skill development. I will show how an intermediary between “no computation” and “full code writing,” such as Mathematica, can be used with first-year students all the way up to seniors participating in research projects. |
| Helping the Blind See the Stars
Brian Eney and members of Westminster Astronomical Society |
Teaching astronomy to a group of children
that have never seen planet Earth with their eyes, the universe that
surrounds them is a very challenging task. Only four percent of matter in
the known universe is “visible”. So, the Sighted only have a four
percent advantage over the Blind to understand the
Universe around all of us. This project explores tools, techniques,
and ideas to convey the vastness for of the universe to the Blind adapted
from standard educational tool kits and materials from NASA, and other
sources. Using telescopes with a camera attached and plugged into a
special printer, adapting current teaching methods to accommodate the
Blind, and teaching difficult concepts such as how do you find a black
hole if you can not see it are just some the topics this project will
cover.
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Thickness Dependent Properties of CMR Manganite thin films on Lattice Mismatched Substrates: Distinguishing Strain and Interface Effects Anthony Davidson III, Rajeswari Kolagani, Ellisaveta Bacharova, Grace Yong, Vera Smolyaninova, David Scheafer, Rajeh Mundle, Towson University |
Epitaxial thin films of CMR manganite materials have been known to show thickness dependent electrical and magnetic properties on lattice mismatched subtrates. Below a critical thickness, insulator - metal transition is suppressed. These effects have been largely attributed to the role of biaxial lattice mismatch strain. Our recent results of epitaxial thin films of LCMO on two substrates with varying degrees of compressive lattice mismatch indicate that, in addition to the effect of lattice mismatch strain, the thickness dependence of the properties are influenced by other factors possibly related to the nature of the film substrate interface and defects such as twin boundaries. We will present results correlating the electrical and magneto transport properties with the structure and morphology of the films. |
| The Revolution in Particle Physics
Dr. Jonathon Bagger, Johns Hopkins University |
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