1 / 14

Biomimetic Wave Pool

Biomimetic Wave Pool Using Mechanical Waves to Visualize Electromagnetic Signals Transmitted to Biomimetic Antenna. Katie Leary, Edgewood Campus School UW-Madison MRSEC RET Summer 2013. Problem Statement.

demetrius-price
Download Presentation

Biomimetic Wave Pool

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Biomimetic Wave Pool Using Mechanical Waves to Visualize Electromagnetic Signals Transmitted to Biomimetic Antenna Katie Leary, Edgewood Campus School UW-Madison MRSEC RET Summer 2013

  2. Problem Statement Antennas transmit electromagnetic waves at frequencies that are notvisible. Comprehension of how signals are transmitted requires conceptual thinking – difficult for middle and high school students. Modeling with mechanical waves can help students visualize how antennas transmit information.

  3. Lab/Research: Antennas • Working with Dr. Nader Behdadand PhD student, Amir Masoumi • Current engineering trend: Small, acute systems found in nature • Biomimicry

  4. Inspiration? Biomimicry • Ormia fly paper on acute hearing abilities • Helped improve hearing aids • Interest in the two antenna w/ acute directional capabilities • Antenna are very close together • Phase difference = small • Ormia fly has an organ thatamplifies sound phase differences

  5. Biomimetic antenna (BMMA) • Antenna was built to mimic Ormia fly • Two monopole antennas • Individually cannot determine origin of wave (omnidirectional) • Coupling system was added to mimic the 'amplification' process (in Ormia's ears) • Results for engineered antenna similar to process in Ormia fly

  6. The Activity: Visualizing EM Waves • To 'see' how EM waves travel • To understand how the BMMA determines wave direction • Class discussion on alternatives to model transmissionsNote: Elicit using water Transmitting Antenna Receiving Monopole Antennas

  7. The Activity: Biomimetic Wave Pool Look at 'Biomimetic Analogy Chart' • Mirror boats and magnets represent antennas • Lasers amplify the wave contact (for more accurate time taking) • Measure time difference of water wave reaching 'antenna' boats • Generate wave at different angles to compare time difference The wave generator 1 'timer' per laser 90° 0° 45° WATCH VIDEO: http://chemistry.beloit.edu/edetc/cineplex/biomimetic_wave/

  8. Biomimetic Analogy Chart

  9. Objectives & Standards • Objectives: • Observe how waves travel in a medium • Determine the direction of a wave • Collaborate, brainstorm, and engineer a model • Science Standards: • MS-PS4-1. Use mathematical representations to describe a simple model for waves that includes how the amplitude of a wave is related to the energy in a wave. • MS-PS4-2. Develop and use a model to describe that waves are reflected, absorbed, or transmitted through various materials. • MS-ETS1-4. Develop a model to generate data for iterative testing and modification of a proposed object, tool, or process such that an optimal design can be achieved. • HS-PS4-5. Communicate technical information about about how some technological devices use the principles of wave behavior and wave interactions with matter to transmit and capture information and energy.

  10. First Activity: Velocity • Task: Calculate the velocity of water waves (v = d/t) • Establish a constant velocity in meters/second (m/s) for followingbiomimetic wave pool lab activity • Materials: • Tape measurer • Stopwatch timer • Wave generator (spool) • Mirror 'antenna' boats w/ magnet anchors • Container filled with water • Antenna Handout #1 In your group, decide on a fixed distance from where you generate the wave and observe it reaching the antennaboat. Keep in mind that the more distance you have the longer the 'timer' has to react to the wave reaching the boat.

  11. Today's Activity: Origin of Waves • Task: Calculate the Δt for waves reachingtwo mirror 'antenna' boats • Complete lead-up activity worksheet • Compare change in time at differentangles (demo one angle only) • Materials: • Calculator • Protractor and string • Stopwatch timers (2) • Pool setup (1) • Antenna Handout #2 • Coins (penny, nickel, dime, and quarter) • For later investigations For effective time keeping, stopwatches should be started together and synchronized. Both timers should decide upon when they will stop. For example, both timers stop stopwatches at first movement of each laser, rather than largest movement.

  12. Project Summary • Problem: How to visualize and determine the direction of antenna transmissions for a biomimetic antenna • Project: Using mechanical waves (water) to model radio waves, in a kiddie pool, with mirrored boats as receivers, and lasers as wave amplifiers • Implementation Plan: After chemistry, three week unit on antennas, with lessons on waves and the electromagnetic spectrum

  13. Remaining Concerns • Teaching trigonometry functions to determine angle for direction of wave • Having quality discussions about how engineers handle problems, collaborate and troubleshoot • Explaining how EM waves are contained as guided waves and transmitted as free waves • Integrating conductivity, current, and energy vocabulary and understanding

  14. Acknowledgements • Dr. Nader Behdad • Amir Masoumi • Prof. George Lisensky • Ben Taylor • AnneLynn Gillian-Daniel • Nelson Cardona Martinez, Samirah Mercado Feliciano, and PR RETs • 2013 RET Teachers: Ashley Adams, Jennifer Wroblewski, Noah Edelstein, Ben Shrago, Barbara Westfall, Evelyn Montalvo, and Linda Vargas • University of Wisconsin, Wisconsin Institute of Discovery and University of Puerto Rico - Mayaguez

More Related