Papers – Page 44 – TechConnect Briefs

Fabrication of Suspended C-NEMS Structures by EB Writer and Pyrolysis Method

Malladi K., Wang C., Madou M., University of California Irvine, US

Recently suspended C-MEMS structures were fabricated by accurately controlling the processing parameter. However how to fabricate various suspended C-NEMS structures is still a big challenge. Here we successfully fabricated C-NEMS by UV/EB lithography and pyrolysis [...]

Inelastic Light Scattering and Light Emission of Individual and Suspended Carbon Nanotubes

Yin Y., Cronin S., Walsh A., Stolyarov A., Tinkham M., Vamivakas A., Bacsa R.R., Bacsa W., Ünlü S., Goldberg B., Swan A., Bacsa R.R., Bacsa W., Boston University, US

Carbon nanotubes represent an important model system in nanoscience and nanotechnology. The tubes are essentially one-dimensional, typically 1-2 nm in diameter and up to 1 mm long and combine nanoscale and macroscopic physics. Besides their [...]

Fabrication of Nanometer-Sized Structures by C-NEMS Technology

Ma K-S, Madou M., Jia G-Y, Xu Q., Zhou H., Wang C-L, Zoval J., Madou M., University of California Irvine, US

We have demonstrated a technique to fabricate carbon nano wires of controllable dimension and location using a top-down methodology. The width and thickness of the wires are in the tens of nanometer range. Additionally, the [...]

Cutting Fluorinated/Ozonated Single-Walled Carbon Nanotubes by Pyrolysis

Chen Z., Gu Z., Ziegler K., Chan C.K., Shaver J., Hauge R.H., Smalley R.E., Rice University, US

Fluorinated/ozonated Single-Walled Carbon Nanotubes (SWNTs) was found to have been cut to short length by Pyrolysis and/or piranha treatment. Large scale cutting of SWNTs would lead to novel applications of nanotubes in microelectronics, biological imaging [...]

Improvements in High Specific Strength Epoxy-Based Composites using High Magnetic Fields

Mahfuz H., Zainuddin S., Rangari V.K., Jeelani S., Tuskegee University, US

Numerous studies have been carried out, over a period of several years, on the detection of changes in physical characteristics of polymers subjected to high magnetic fields during the curing stages. Extremely large increases in [...]

The Role of Different Parameters in the Properties of Carbon Nanotube Polymer Nanocomposites

Velasco-Santos C., Castaño V.M., CFATA-UNAM /ITQ, MX

This work presents diverse results which depend on different parameters that play an important role in the distribution, interaction and synergetic effect in composites developed with the incorporation of multiwalled nanotubes in different polymeric matrix. [...]

Evaluation of the Degree of Exfoliation in Poly(epsilon-caprolactone) Nanocomposites Using by the Dynamic Mechanical Analysis

Chung J.W., Jeon J-D, Kwak S-Y, Seoul National University, KR

Nanocomposites composed of poly(epsilon-caprolactone) (PCL) and the organoclays which were layered silicate with the organic modifiers, i.e., nonpolar (OC25A) and polar (OC30B), were prepared by melt mixing. After mixing, we imposed additional heat to PCL/organoclay [...]

Platinum Nanowire Actuator: Metallic Artificial Muscles

Lu S., Sivakumar K., Panchapakesan B., University of Delaware, US

In this paper, we have fabricated platinum nanowires by using carbon nanotube as templates and have shown its applications for nanoactuation using electro-chemical actuation techniques.The strain response of the nanowire is measured and a total [...]

Organic, Cluster Assembled and Nano-Hybrid Materials Produced by Supersonic Beams: Growth and Applications to Prototype Device Development

Iannotta S., Aversa L., Boschetti A., Chiarani S., Coppedè N., Nardi M., Pallaoro A., Siviero F., Toccoli T., Verucchi R., Institute for Photonics and Nanotechnology - Trento Division, IT

Organic materials (oligothiophenes, pentacene and phthalocyanines), cluster assembled nano-oxides and nanohybrid materials are produced by supersonic free jets in UHV (characterized by surface methods UPS, XPS, LEED, Auger). We demonstrate the role of precursors initial [...]

Structure and Rheology of Supercritical Carbon Dioxide Exfoliated Polymer Nanocomposites

Serhatkulu G.K., Horsch S.E., Kannan R., Gulari E., Wayne State University, US

A major technological barrier to achieving superior properties of nano-structured composite materials is the difficulty of dispersing fillers uniformly in a host matrix. The existing nanocomposite manufacturing processes achieve property improvements through chemical modifications of [...]