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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.
Boron Nitride Nanotube Structure
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07 Oct 2011 | Publications | Contributor(s): Brian Demczyk
We have used high-resolution transmission electron microscopy to resolve the basal plane structure and chirality relationships in boron nitride nanotubes.
Comparison of strain relaxation in epitaxial Si0.3Ge0.7 films grown on Si(001) and Ge(001)
Surface and interfacial strain have been computed for SiGe thin films grown by UHVCVD,based on measurements via transmission electron microscopy and Raman spectroscopy.
Device Physics and Simulation of Silicon Nanowire Transistors
20 May 2006 | Publications | Contributor(s): Jing Wang
As the conventional silicon metal-oxide-semiconductor field-effect transistor (MOSFET) approaches its scaling limits, many novel device structures are being extensively explored. Among them, the …
Direct mechanical measurement of the tensile strength and elastic modulus of multiwalled carbon nanotubes
This work represents the first in-situ measurenment of the tensile strength of a carbon nanotuube.
Exploring New Channel Materials for Nanoscale CMOS
21 May 2006 | Publications | Contributor(s): Anisur Rahman
The improved transport properties of new channel materials, such as Ge and III-V semiconductors, along with new device designs, such as dual gate, tri gate or FinFETs, are expected to enhance the …
Growth of Cu films on hydrogen terminated Si(lQ0) and Si(lll) surf&es
We have employed reflection high energy electron diffraction (RHEED) and high resolution transmission electron microscopy (HREM) to study Cu films grown on hydrogen terminated Si( 100) and Si( 111) …
Interface structure and surface morphology of (Co, Fe, Ni)/Cu/Si(100) thin films
We have examined bilayer Co/Cu, Fe/Cu, and Ni/Cu films deposited by molecular-beam epitaxy on hydrogen-terminated @100# silicon substrates. Coauthors: V.M. Naik, A. Lukaszew, R. Naik, G. W. Auner
Lubrication Effects on Head-Disk Spacing Loss
The effects of lubrication thickness on the magnetic recording head-media tribology were investigated in this study.
Magnetic properties of magnetron sputtered Co-Cr thin films
The magnetic properties 01 magnetron sputtered CO-22 at.% Cr films of various thickness deposited on glass have been examined, with particular attention to the various contributions to the film …
Origin of the orientation ratio in sputtered longitudinal media
The surface morphology, thin film microstructure, and crystallography of sputtered longitudinal media were examined by atomic force and transmission electron microscopy. Coauthors: J. N. Zhou, G. …
Oxidation Behavior of CoCr Thin Films
In this work, elemental redistribution of annealed CoCr thin films has been investigated by X-ray photoelectron spectroscopy.
Self-Consistent Properties of Carbon Nanotubes and Hexagonal Arrays as Composite Reinforcements
05 May 2010 | Publications | Contributor(s): R. Byron Pipes
A self-consistent set of relationships is developed for the physical properties of single walled carbon nanotubes (SWCN) and their hexagonal arrays as a function of the chiral vector integer pair, …
Theoretical studies of rolled-up and wrinkled nanomembranes
29 Jul 2011 | Publications | Contributor(s): Peter Cendula
PhD thesis along with additional movie files.
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