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Carlos R. Villa October 24, 2008 FAST Conference. NHMFL Overview. One Of Three National Labs In The Southeast U.S. One Of Nine High Magnetic Field Labs In The World Only One In Western Hemisphere Largest And Highest Powered In The World. NHMFL Overview. User Laboratory

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Carlos r villa october 24 2008 fast conference

Carlos R. Villa

October 24, 2008

FAST Conference


Nhmfl overview
NHMFL Overview

  • One Of Three National Labs In The Southeast U.S.

  • One Of Nine High Magnetic Field Labs In The World

    • Only One In Western Hemisphere

    • Largest And Highest Powered In The World


Nhmfl overview1
NHMFL Overview

  • User Laboratory

    • Over 800 User Visits (2005)

    • NSF Funded

    • Research Free To Scientist

  • Research In Many Fields (Not Just Magnets!!)

    • Biology, Chemistry, Biomedical, Geology, Engineering, Geochemistry, Materials Science, Physics, Microscopy…


  • Gauss

    • Measurement Of Magnetic Field

    • Named For Carl Friedrich Gauss

  • Tesla

    • Measurement Of Larger Magnetic Fields

    • Named For Nikola Tesla

    • 10,000 Gauss = 1 Tesla


  • Refrigerator Magnet: .03 T

  • Earth’s Magnetic Field: .000045 T

  • Person’s Magnetic Field: 3 x10-13 T

  • Junkyard Magnet: 1 T

  • MRI Magnet: 2-3 T


  • NHMFL ICR Magnet: 9.4 T

    • Ionic Cyclotron Resonance

  • NHMFL 900 Mhz: 21 T

    • Nuclear Magnetic Resonance

  • NHMFL Resistive Magnet: 20-35 T

  • NHMFL Hybrid Magnet: 45 T

    • Resistive And Superconducting

  • NHMFL Pulse Magnet: 65 T

    • Not Continuous Field



  • Fe(II)Fe(III)2O4

  • Naturally Magnetic

    Igneous Rock

  • Usually found in

    marine sands and deserts

  • Largest US deposit in NY (Adirondacks)

  • Lodestone Found In Arkansas

    • Different Crystalline Structure


  • Electron Configuration

    • Normally Scattered

  • Magnetic Domains

    • In Magnets: Lined Up

  • Whenever You Get Electrons All Pointing The Same Direction, A Magnetic Field Is Produced Around That Item



  • Electrons Are Temporarily Aligned

  • Will Keep Magnetic Field Until Tampered

    • Examples:

      • Paperclips, Scissors, Staples, Thumb Tacks, Push Pins, Screwdrivers, Refrigerator, Car Doors, etc…

      • Anything that is magnetic, but will not keep its field


  • Field Viewers

    • Box Photo Frames

  • Iron Filings

    • Use With Paper

    • Clean-up Can Be A Mess




  • Magnetize An Item

  • Allow It To Float

    • Must Turn Freely

    • Needle

    • Petri Dish

    • Coffee Stirrer

    • Water

    • Permanent Magnet



  • Electricity Is The Movement Of Electrons

  • Electrons Flow In One Direction

  • This Alignment Of Electrons Creates A Magnetic Field

    • Similar To Electrons Lining Up In A Permanent Magnet

    • So Every Wire Carrying Electricity Has A Weak Magnetic Field Around It (Try It)

  • Coiling The Wire Concentrates The Magnetic Field Inside The Coil


  • Materials

    • Copper Wire

    • Iron Rod

    • Battery

  • Extensions:

    • 2 Batteries

      • In Line?

    • Aluminum, Wooden Rod

      • Will They Work?


  • Right Hand Rule

    • Direction Of Field

  • Poles (Winding Direction)

    • Use Magnaprobe

  • Variables:

    • Neatness

    • Number Of Winds

    • Wire Gauge

    • Battery Strength

    • Temperature






Ferrofluids

A Special Solution Of Magnetic Particles In A Colloidal Suspension Whose Flow Can Be Controlled By Magnets Or Magnetic Fields.

Ferrofluids


Ferrofluids1
Ferrofluids Suspension Whose Flow Can Be Controlled By Magnets Or Magnetic Fields.

  • Make Your Own:

  • Oil, Petri Dish, Magnet

    • Please Be Careful

  • Iron Filings:

    • Education Innovations

    • Post Apple Scientific

  • Actual Ferrofluids Available:

    • Carolina Biological

    • Educational Innovations


  • When an Suspension Whose Flow Can Be Controlled By Magnets Or Magnetic Fields. emf is generated by a change in magnetic flux according to Faraday's Law, the polarity of the induced emf is such that it produces a current whose magnetic field opposes the change which produces it.





  • Diamagnetic Behavior Is Limited Suspension Whose Flow Can Be Controlled By Magnets Or Magnetic Fields.

    • YBCO Works Well

      • Kit Available From Colorado Superconductor Inc.


Additional resources
Additional Resources Suspension Whose Flow Can Be Controlled By Magnets Or Magnetic Fields.

  • Driving Force

    • The Natural Magic of Magnets

    • James D. Livingston

  • NSTA Press: Stop Faking It

    • Electricity and Magnetism


Additional resources1
Additional Resources Suspension Whose Flow Can Be Controlled By Magnets Or Magnetic Fields.

  • http://education.magnet.fsu.edu

    • MagLab Alpha Download

  • K-12 Programs

  • RET Program


  • Business Cards Suspension Whose Flow Can Be Controlled By Magnets Or Magnetic Fields.

    • Please Do Not Hesitate To Contact Me With Questions, Ideas, Suggestions…

  • Free Pencils In The Back

  • Free Magnets Too!


Carlos R. Villa Suspension Whose Flow Can Be Controlled By Magnets Or Magnetic Fields.

K-12 Education Outreach Coordinator

National High Magnetic Field Laboratory

[email protected] 850-644-7191


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