Subject: ~ 7 title(s) found
Modern X-ray Scattering Methods for Nanoscale Materials Analysis
Added on 19-SEP-08
Contributed by Richard Matyi
Abstract PDF | Presentation PDF | Presentation with audio (SWF)
Since its discovery by von Laue in 1912, X-ray diffraction has become an indispensable tool for structure determinations in the physical and biological sciences. X-rays are characterized by high energies and by wavelengths that are commensurate with nanometer-sized structures - unlike optical probes, whose wavelengths are several orders of magnitude larger. Additionally, X-rays couple only weakly with matter, and the refractive indices of X-rays differ only slightly from unity. The interactions ...
Interactive NanoVisualizationfor Science and Engineering Education
Added on 04-DEC-07
Contributed by B Ramakrishna
Abstract PDF | Presentation PDF
The relationship between the structure of materials, especially at the atomic/molecular level, and their properties as well as the changes they undergo, is one of the central in science. It is well known that students have difficulty with both the application of atomic/molecular models to the explanation/prediction of the behavior of materials as well in the prediction of properties and phenomena at the macroscale based on the icro/nanostructure. There is also a paucity of appropriate resources ...
Nanomaterials Inspiration from Ancient Materials
Added on 23-JAN-07
Contributed by Howard Katz, Jonah Erlebacher, Peter Searson
Abstract PDF | Presentation PDF | Windows Media Movie | Presentation with audio (SWF)
The current revolution in materials technologies is being driven by the ability to observe and control nanometer-scale features, and even to anipulate objects the size of single molecules. Research being conducted at the Johns Hopkins Department of Materials Science and Engineering has a powerful nanoscience focus encompassing energy, devices, and biotechnology. This presentation will illustrate......
Metal Oxide Nanowires: Synthesis, Characterization and Device Applications
Added on 09-MAY-06
Contributed by Jia Lu
Abstract PDF | Presentation PDF | Windows Media Movie | Presentation with audio (SWF)
Various metal oxide nanowires, such as ZnO, SnO2, Fe2O3, In2O3 and Ga2O3, have been synthesized by chemical vapor deposition method. Their structures and properties are characterized by TEM, SEM, XRD, AFM, photoluminescence, photoconductance, scanning surface potential microscopy, and electrical transport measurement. By integrating bottom-up technique with top-down lithographic technique, these nanostructures are used to fabricate a range of electronic and chemical sensing devices......
Developing Nanotechnology Modules for Existing Secondary School Curriculum
Added on 09-MAY-06
Contributed by Linda Schadler, Chang Ryu
Abstract PDF | Presentation PDF | Windows Media Movie
The education and outreach program at Rensselaer's NSF Center for Directed Assembly of Nanostructures has been focusing on K-12 science education. Through a partnership with a local High School and General Electric, 5 high school teachers developed new teaching modules on nanotechnology and supplementary teaching materials. These modules were incorporated into existing courses and make us of nanoscale analysis tools, such as scanning electron microscopy (SEM) and atomic force microscopy (AFM)......
Introduction to Nanometer Scale Science and Technology
Added on 06-MAY-06
Contributed by Mark Hersam
Abstract PDF | Presentation PDF | Windows Media Movie | Presentation with audio (SWF)
This seminar will provide an introductory overview for non-experts of the
emerging field of nanometer scale science and technology. The following topics will be emphasized: (1) Historical background and motivation for the study of nanometer scale phenomena; (2) Strategies for controlling the structure of matter with nanometer scale precision; (3) Size-dependent properties (e.g., electrical, optical, and magnetic) that emerge at the nanometer scale; (4) Real-world applications that utilize nanom...
Nanomagnetism
Added on 04-MAY-06
Contributed by Kristen Buchanan
Abstract PDF | Presentation PDF | Windows Media PDF
Magnets play an important role in our everyday life in a variety of ways beyond
holding photos on the refrigerator door. Computer hard drives, MP3 players, iPods, credit cards, electric motors, audio speakers, and magnetic resonance imaging (MRI) machines used in hospitals, are all examples of devices that rely on magnetism. When the size of a magnet is reduced to the nanoscale, its properties can be drastically different and often improved due to confinement effects. Nanomagnets have great pot...
