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Nanotechnology bears the promise of engineering at an atomic scale--of assembling atoms in arrangements that are completely unnatural, thereby creating materials with properties that have never been seen before. This may sound like science fiction, but it has been going on for more than 30 years, since the invention of Molecular Beam Epitaxy (MBE). MBE provides a way of growing a block of material one sheet of atoms at a time. By mixing different types of atoms in various combinations, it is possible to "tune" the properties of the resulting material. For example, the laser diode in your CD player is probably made from silicon. It shines a particular wavelength of light based on the energy gap between the conduction and valence bands in silicon. That same laser diode could be "tuned" to emit a different wavelength by building it with a new material engineered to have a different band gap.

MBE is just one technique for building materials on an atomic scale. Many other techniques are also under investigation, including dragging atoms via a Scanning Tunneling Microscope (STM) tip, and Self-Assembled Monolayers (SAM).

Learn more about material science from the resources available on this site, listed below.

More information on Material science can be found here.

Online Presentations (61-80 of 340)

  1. ME 597 Lecture 16: Dynamic Approach Curves in AM-AFM (VEDA Demo)

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    24 Jan 2011 | Online Presentations | Contributor(s): John Melcher

    Guest lecturer: John Melcher. VEDA demonstration.

    https://nanohub.org/resources/9960

  2. Levitated Spinning Graphene

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    18 Jan 2011 | Online Presentations | Contributor(s): Bruce E. Kane

    I will describe a method for levitating micron-sized few layer graphene flakes in a quadrupole ion trap. Starting from a liquid suspension containing graphene, charged flakes are injected into the …

    https://nanohub.org/resources/10003

  3. ME 597 Lecture 20: Scanning Controls (VEDA Demo)

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    13 Jan 2011 | Online Presentations | Contributor(s): Daniel Kiracofe

    Guest lecturer: Daniel Kiracofe. VEDA demonstration.

    https://nanohub.org/resources/10060

  4. ME 597 Lecture 17: Cantilever Eigenmodes, Equivalent Point Mass Oscillator, Analytical Approaches

    This resource has a 10.0 Ranking

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    29 Dec 2010 | Online Presentations | Contributor(s): Arvind Raman

    https://nanohub.org/resources/9961

  5. ME 597 Lecture 25: AFM in Liquids I

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    20 Dec 2010 | Online Presentations | Contributor(s): Arvind Raman

    https://nanohub.org/resources/10149

  6. ME 597 Lecture 26: AFM in Liquids II

    This resource has a 5.3 Ranking

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    20 Dec 2010 | Online Presentations | Contributor(s): Arvind Raman

    https://nanohub.org/resources/10150

  7. ME 597 Lecture 27: Other Emerging dAFM Techniques

    This resource has a 5.3 Ranking

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    20 Dec 2010 | Online Presentations | Contributor(s): Arvind Raman

    https://nanohub.org/resources/10151

  8. Uncertainty Quantification in Experiments

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    16 Dec 2010 | Online Presentations | Contributor(s): Arvind Raman

    An overview is provided of how experimental data should be reported with true uncertainties. Examples from experiments on gas damping measurements in RF switches and for estimation of nanoparticles …

    https://nanohub.org/resources/10035

  9. ME 597 Lecture 24: Using AFM to Measure Electrostatic Forces

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    07 Dec 2010 | Online Presentations | Contributor(s): Ron Reifenberger

    https://nanohub.org/resources/10064

  10. ME 597 Lecture 23: FM-AFM Selected Results and Achieving Atomic Resolution with AFM

    This resource has a 5.6 Ranking

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    07 Dec 2010 | Online Presentations | Contributor(s): Ron Reifenberger

    https://nanohub.org/resources/10063

  11. ME 597 Lecture 21: Frequency Modulated AFM

    This resource has a 5.7 Ranking

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    22 Nov 2010 | Online Presentations | Contributor(s): Ron Reifenberger

    https://nanohub.org/resources/10061

  12. Translational Research in Nano and Bio Mechanics

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    18 Nov 2010 | Online Presentations | Contributor(s): Ken P. Chong

    One of the most challenging problems is the integration and interface between wet (biological) and dry (structural) materials. Nano and bio science and engineering is one of the frontiers in …

    https://nanohub.org/resources/10029

  13. ME 597 Lecture 18b: Analytical Approaches - Peak Interaction Forces

    This resource has a 5.8 Ranking

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    17 Nov 2010 | Online Presentations | Contributor(s): Arvind Raman

    Peak Force During Tapping - not directly observable.

    https://nanohub.org/resources/10013

  14. ME 597 Lecture 18a: Analytical Approaches

    This resource has a 5.8 Ranking

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    17 Nov 2010 | Online Presentations | Contributor(s): Arvind Raman

    https://nanohub.org/resources/9962

  15. ME 597 Lecture 19: VEDA - Scanning Controls

    This resource has a 5.8 Ranking

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    11 Nov 2010 | Online Presentations | Contributor(s): Arvind Raman

    https://nanohub.org/resources/9993

  16. Chemically Enhanced Carbon-Based Nanomaterials and Devices

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    09 Nov 2010 | Online Presentations | Contributor(s): Mark Hersam

    Carbon-based nanomaterials have attracted significant attention due to their potential to enable and/or improve applications such as transistors, transparent conductors, solar cells, batteries, and …

    https://nanohub.org/resources/9929

  17. ME 597 Lecture 15: Dynamic Approach Curves

    This resource has a 6.0 Ranking

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    09 Nov 2010 | Online Presentations | Contributor(s): Arvind Raman

    https://nanohub.org/resources/9959

  18. ME 597 Lecture 14: Introduction to Dynamic AFM

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    Users: 542
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    04 Nov 2010 | Online Presentations | Contributor(s): Arvind Raman

    https://nanohub.org/resources/9955

  19. ME 597 Lecture 12: Experimental Uncertainties in Extracting Material Properties from F-Z Curves

    This resource has a 5.8 Ranking

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    29 Oct 2010 | Online Presentations | Contributor(s): Ryan Wagner, Arvind Raman

    Guest lecturer: Ryan Wagner.

    https://nanohub.org/resources/9849

  20. Limits of Thermal Processes and their Implications on Efficient Energy Utilization

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    27 Oct 2010 | Online Presentations | Contributor(s): Arunava Majumdar

    About 90 percent of the world’s energy use involves thermal processes – thermal engines to generate mechanical power; heating and cooling in buildings; heating involved in manufacturing of steel, …

    https://nanohub.org/resources/9898

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