Theme: ~ 6 title(s) found
Nanopatterning: The science of making things small from the top-down
Submitted on 11-SEP-08
Contributed by Christina Sweeney, Teri Odom
We have developed two Nanopatterning activities, replica molding and microcontact printing and etching, which illustrate top-down fabrication methods. Replica molding uses stamps generated from the nano-sized features of an Au-CD to replicate relief structures in photo or thermally curable polymeric material. Microcontact printing and etching uses self-assembled monolayers of hydrophobic thiols as etch resist to fabricate square or diamond shaped pads on Au-CD substrates. Our methods use cheap...
Optical Tweezers for High School and College Students
Submitted on 25-JUN-08
Contributed by Weiqiang Mu, John Ketterson
The module explains the physics underlying laser tweezers and its applications to trap arrays and separate particles....
Nanopattern formation of two dimensional weakly charged telechelic gels by self-assembly
Submitted on 28-MAR-08
Contributed by Dongsheng Zhang, Monica Olvera de la Cruz
This project has shown the nanopattern formation of two dimensional weakly charged telechelic gels by self-assembly. We find that the gel will be swollen when the attraction between hydrophobic backbones in the gel are weak (such as the strength of attraction ε = 1.0 KBT), because the electrostatic repulsion dominates, As the Van der Waals attraction increases, the polymer gel will shrink and when it is balanced with the electrostatic repulsion, different sizes of nanopatterns...
Copper Nanowire Formation through Electrodeposition
Submitted on 11-JUN-07
Contributed by Limay Goh, Effendi Rusli, Mitsuko Fujiwara, Richard Braatz
Metal nanostructures with minimum dimensions in the tens of nanometers are used to transport electrons between components in nano- and microelectronic devices. This interactive software simulates the mechanism by which copper nanostructures are manufactured through electrodeposition, by using the kinetic Monte Carlo simulation method. The goal is for students to design a highly uniform copper nanostructure by varying parameters associated with transport of the copper ions to the solid-liquid int...
Nanoscale Patterning: Top-down meets Bottom-up
Submitted on 14-NOV-06
Contributed by Teri Odom
An introduction to nanoscale science and technology with an emphasis on nanofabrication, chemical synthesis, and simple devices. The lab component involves training on scanning probe and electron microscopes and bench-top nanoscale patterning experiments....
A Length Units Conversion Applet - version 1.0
Submitted on 14-NOV-06
Contributed by Umberto Ravaioli
The Length Conversion Calculator applet provides an interactive way to explore the numerical relationships between length units in the Metric system and in the British/USA system, and it is designed to provide an appreciation of orders of magnitude for the different units through a visual hands-on approach. This applet is written in JAVA 2.0 and it will run on any recent web browser with the appropriate Java plug-in installed....
