Remote Access to Hi-tech Equipment

Transcription

1 Remote Access to Hi-tech Equipment From Your Classroom to Ours Sebastien Maeder

2 Outline What is Remote Access? The Method vs. the Goal The role within NACK Why should we try? Confines of Classroom Characterization Remote Access as a Resource What can we use it for? What tools are available? How do we get started? How does it work? Instructional Videos Requirements Remote Ready Labs Video Learning Modules Request Form Sending Samples Running the Tools Feedback Conclusion

3 What is Remote Access? Bringing nano-scale characterization into your classroom by using audio, video, and expertise to collaborate with students Teaching and learning the fundamentals Background, tools, and processes Performing relevant hands-on lab activities with instant qualitative outcomes and connecting them with remote, quantitative observations

4 The Method vs. the Goal Offering remote control of expensive, otherwise inaccessible instrumentation, is merely the method The goal is to stimulate student interest and increase understanding in the technological sciences Sharing our enthusiasm and knowledge Making the experience relevant and engaging Providing an immersive experience Letting students become involved scientists instead of spectators

5 The Role Within NACK The mission of NACK is to enable nanotechnology education Partnership/Cooperative model Remote Access can play a role Secondary Schools 2 Year Community and Technical Colleges NACK Remote Access 4 Year Colleges and Universities

6 Why Should We Try? Confines of Classroom Characterization Tools Maintenance Service Contracts Warranties Cost $30,000 to $600,000 per instrument Time Develop labs Become an Expert Teach Background and Operation Bottlenecks....

7 Why Should We Try? A Teachers Resource Labs and learning objectives are already developed Efficient use of very expensive resources No overhead or maintenance REMOTE ACCESS Reduced preparation time Increased student motivation to learn Links teachers to university research facilities and personnel Provides multiple learning motifs

8 Why Should We Try? A Student Resource Hands-On Experience Exposure to otherwise inaccessible equipment Provides relevance, background, and principles Shows that scientists are real people REMOTE ACCESS Increased student motivation to learn Links students to university research facilities and university personnel Engaging, holistic approach

9 What Can We Use It For? REMOTE ACCESS Verify/Demonstrate learned concepts Supplementing your own equipment Hands-On access by your laboratory students Classroom demonstration s Enhancing scientific interest and knowledge ANYTHING

10 What Tools Are Available? Optical Microscope Scanning Probe Microscope UV-Vis Spectrophotometer FESEM with EDS Profilometer

11 Optical Microscope

12 Viewing field Viewing field Light reflecting off of entire surface Light reflecting off surface irregularities Light source Lens Lens Light source Substrate Substrate

13 Optical Microscopy Glass lenses and visible light magnify image Due to wavelength of light, only magnifies up to 1000X Connected to camera and monitor for quick measurements and data capture

14 Field Emission Scanning Electron Microscope

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16 Field Emission Scanning Electron Microscope Nano-scale resolution (2nm) Multiple Detectors Everhart Thornley SE 2 InLens SE 2 InLens EsB Annular AsB X-Ray / EDS Multitude of Information Surface topography Crystalline orientation Compositional contrast Element analysis Element mapping

17 Low vs. High Accelerating Voltage Silicon Carbide

18 Everhart-Thornley SE2

19 InLens SE2 200 nm 200 nm

20 InLens EsB

21 InLens SE 2 vs. EsB

22 Energy Dispersive Spectroscopy (EDS) Quantitative and Qualitative Analysis Element Spatial Distribution Mapping

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24 Scanning Probe Microscope Veeco Innova SPM

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26 Scanning Probe Microscopy Angstrom-scale resolution (<.1 nm) Multiple Techniques Atomic Force Microscopy Magnetic Force Microscopy Scanning Tunneling Microscopy Multitude of Information Topography Frictional coefficients Roughness Compositional contrast Magnetic variance Conductive variance

27 3D Rendered Features

28 Rapid Comparison CD (5 µm) DVD (5 µm)

29 Line Profiles.etc.

30 UV/VIS Spectrophotometer

31 The interaction of light with matter can result in Reflection Scattering Diffraction Absorption Transmission Scattered Depends upon wavelength of light and properties of the sample I 0 I

32 UV-Vis Spectrophotometry Measures light absorption as a function of wavelength Identifies Transition metals Organic compounds Nanoparticles Example Transmission spectra of various thicknesses of sputtered gold

33 Profilometer Penn Sate Center for Nanotechnology Education and Utilization

34 diamond tipped probe physically contacts the surface to determine surface topography Used to measure: Film thickness Surface topography Step heights

35 How Do We Get Started? Go the the WEB! Educators Remote Access

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37 Educators Tab

38 Remote Access Tab

39 Scroll down Watch the video vignette Or not Get started!

40 How Does It Work? Instructional Video Provide Feedback Requirements Run the Tool Remote Access Remote Ready Labs Send Samples (or not) Video Learning Modules Perform Lab Remote Session Request Form

41 Conclusion Remote Access to high tech tools is available to classrooms across the country Over 30 sessions reaching over 400 students Results are extremely positive learning experience was interesting. Immersive. had great impact integrative welldesigned holistic

42 Follow - Up We want you to participate Don t miss out on this tremendous free opportunity The portal into Remote Access and all of the NACK educational resources is

43 Final thoughts and/or questions

44 Logging In

45 Requirements Computer with access to install plugins and software High speed internet access Speakers Microphone Projector connected to same computer (for multiple viewers) Web browser: Mozilla Firefox preferred Voice Over Internet Protocol software with username and password (Skype preferred)

46 Remote Ready Labs Integrated characterization tools into the lab structure We help students visualize Students qualitatively analyze We quantitatively analyze together

47 Remote Ready Labs

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52 Introduction to SEM

53 Remote Request Form Number of students participating Instruments of interest Institution type Mathematics background level Samples of interest Request available date and time Primary goal for participating in this remote access session

54 7/22/10 Gold Nanoparticle Synthesis

55 Background The gold we know: Material properties don t change with size Resistivity melting point optical absorption The gold we are discovering: Material do change with the size of the gold nanoparticle.

56 Materials Flinn Scientific Ruby-Red Colloidal Gold Nanotechnology Demonstration Kit 100mL Beaker Hotplate Safety Glasses Tweezers Silicon Wafer or Glass Microscope Slides 100mL (or larger) Storage/Waste Bottle

57 Objectives Learn about property differences in bulk and nanoscale materials Understand theory and operation of AFM, FESEM, and UV-Vis Spectroscopy Use direct qualitative observation and remote quantitative instruments to characterize your samples

58 Procedure 50 ml DI water 5 ml HAuCl4 Boil 0.5 ml 1% sodium citrate Boil Clear, violet, red Ionic solution (Au3+) (aq) Reduction to (Au) (s) Capping via sodium citrate (next slide) click 7/22/10

59 Feedback

60 Send the Samples Remote Characterization Samples c/o Sebastien Maeder 101 Innovation Blvd Lubert Building, Suite 112 University Park, PA 16801

61 Run the Tool

62 7/22/10 Run the Tool: AFM

63 Run the Tool: FESEM 100 nm

64 Run the Tool: UV-Vis