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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 (81-100 of 340)

  1. Fun in the Sand: Some Experiments in Granular Physics

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    25 Oct 2010 | Online Presentations | Contributor(s): Peter E. Schiffer

    In the last two decades, condensed matter physicists have begun an intense study of the dynamic and static properties of granular media (materials made from individual acroscopic solid grains). These …

    https://nanohub.org/resources/8491

  2. ME 597 Lecture 18: Stiffness Callibration and Amplitude Modulated Scanning

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

    The raw recording for this lecture is all that is available.

    https://nanohub.org/resources/7983

  3. Nanotechnology Activities in Colombia: A Perspective From the Excellence Center for Novel Materials

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    11 Oct 2010 | Online Presentations | Contributor(s): Pedro Antonio Prieto

    I will present the current state of R & D in the fields of condensed matter, novel materials, and nanotechnology in Colombia. I will initially consider Latin America and the Caribbean (LAC) to then …

    https://nanohub.org/resources/9837

  4. ME 597 Lecture 11: Three Important Callibrations

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

    https://nanohub.org/resources/9848

  5. ME 597 Lecture 10: Force Distance Curves II

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

    https://nanohub.org/resources/9847

  6. ME 597 Lecture 7: Interaction Forces III

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    05 Oct 2010 | Online Presentations

    https://nanohub.org/resources/9731

  7. ME 597 Lecture 8: Introduction to Contact Mechanics

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    05 Oct 2010 | Online Presentations | Contributor(s): Ron Reifenberger

    https://nanohub.org/resources/9818

  8. Transformative Power Semiconductor Technologies to Impact 21st Century Energy Economy, and Space and Defense Electronics

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    22 Sep 2010 | Online Presentations | Contributor(s): Krishna Shenai

    This talk will focus on advanced power semiconductor materials, devices, circuits and systems that are needed in order to address this daunting challenge. Specifically we will discuss emerging …

    https://nanohub.org/resources/9343

  9. ME 597 Lecture 9: Force Distance Curves I

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

    https://nanohub.org/resources/9732

  10. ME 597 Lecture 6: Interaction Forces II

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    16 Sep 2010 | Online Presentations

    https://nanohub.org/resources/9715

  11. Tutorial 3b: Materials Simulation by First-Principles Density Functional Theory II

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    14 Sep 2010 | Online Presentations | Contributor(s): Umesh V. Waghmare

    This lecture is part of the 2010 NCN@Purdue Summer School: Electronics from the Bottom Up. “Electronics from the Bottom Up” is an educational initiative designed to bring a new perspective to …

    https://nanohub.org/resources/9684

  12. Tutorial 3a: Materials Simulation by First-Principles Density Functional Theory I

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    14 Sep 2010 | Online Presentations | Contributor(s): Umesh V. Waghmare

    This lecture provides an introduction to first-principles density functional theory based methods for simulation of materials, with a focus on determination of interatomic force constants and …

    https://nanohub.org/resources/9683

  13. ME 597 Lecture 5: Interaction Forces I

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    14 Sep 2010 | Online Presentations | Contributor(s): Ron Reifenberger

    See reading references below. Related Reading: J. Israelachvilli, “Intermolecular and surface forces,” Elsevier Science, 2010, 3rd ed. H. J.Butt,B. Cappella, M. Kappl, “Force measurements …

    https://nanohub.org/resources/9713

  14. ME 597 Lecture 4: The Transition from STM to AFM

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    09 Sep 2010 | Online Presentations | Contributor(s): Ron Reifenberger

    Recommended Reading: See References below. G. Binnig, C. Quate and Ch. Gerber, Atomic Force Microscope,

    https://nanohub.org/resources/9685

  15. ME 597 Lecture 3: Advanced Topics in STM

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    09 Sep 2010 | Online Presentations | Contributor(s): Ron Reifenberger

    Topics: Scanning Tunneling Spectroscopy (STS) Current Imaging Tunneling Spectroscopy (CITS) Apparent barrier height Force on the tip Atomic Corrugation Quantum Corrals Quantum Corrals …

    https://nanohub.org/resources/9602

  16. ME 597 Lecture 2: STM Experimental Considerations

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    01 Sep 2010 | Online Presentations | Contributor(s): Ron Reifenberger

    Topics: Early Successes How to Make an STM Recommended Reading: See References below. G. Binning, H. Rohrer, Ch. Gerber, E. Weibel, “7x7 Reconstruction of Si(111) Resolved in Real …

    https://nanohub.org/resources/9601

  17. ME 597 Lecture 1: Review of Quantum Tunneling/Introduction to STM

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    01 Sep 2010 | Online Presentations | Contributor(s): Ron Reifenberger

    Topics: Quantum Tunneling The STM – basic idea Recommended Reading: See References below. G. Binnig, H. Rohrer, Ch. Gerber, E. Weibel, “Tunneling through a controllable vacuum …

    https://nanohub.org/resources/9600

  18. ME 597 Course Overview

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    01 Sep 2010 | Online Presentations | Contributor(s): Ron Reifenberger

    https://nanohub.org/resources/9599

  19. Superficial Science – Polymer Surface Science at Purdue

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    26 Aug 2010 | Online Presentations | Contributor(s): Jeffery Youngblood

    In this presentation, Professor Youngblood describes his current research projects and the theme that ties them together - surface science.

    https://nanohub.org/resources/9587

  20. Illinois iOptics Lecture 4: Advance applications in Nanomaterials, Photovoltaics, Organic/Inorganic Sensors, Materials Science, and Alternative Energies, etc. using Raman and Photoluminescence Technologies

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    10 Aug 2010 | Online Presentations | Contributor(s): Emmanuel Leroy, Michael Oweimrin

    Emmanuel Leroy originally began his career at the Horiba Jobin Yvon facility in France (formerly Dilor) and moved to the USA as a Service Engineer to support the Raman products in North and South …

    https://nanohub.org/resources/8961

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