a comparison of buckling analysis of the nanoplate and nanocomposite plate with central square hole embedded in winkler foundation is presented in this article. in order to enhance mechanical properties of nanoplate with central cut out, carbon nano tubes (cnts) are applied as uniform distribution (ud) through thickness direction. in order to define the shape function of plate with square cut o...

Controlled silicon structures on the micron to nanometer order have received much attention owing to their potential applications in various fields such as electrochemical, optoelectrical, and biological sciences. Although the techniques commonly used in fabricating nano-/microstructured silicon are conventional lithographic techniques using a resist mask with an optical, electron, or X-ray bea...

In the manufacturing of hypotubes for coronary applications, austenitic steels types 304, or 316 L are being used. The process involves bending steel strips into tubes and continuous longitudinal welding tubes. Manufacturing also includes heat treatments stretching operations to achieve an external/internal diameter 0.35/0.23 mm, with a tolerance +/? 0.01 mm. Austenitic sensitive localized corr...

We report the self-assembly of single crystals of single-walled carbon nanotubes (SWCNTs) using thermolysis of nano-patterned precursors. The synthesis of these perfectly ordered, single crystals of SWCNTs results in extended structures with dimension on the micrometer scale. Each crystal is composed of an ordered array of tubes with identical diameters and chirality, although these properties ...

In this study, nano- and microscale fibrillar and tubular structures formed by mixing two aromatic peptides known to self-assemble separately, (diphenylalanine and di-D-2-napthylalanine) have been investigated. The morphology, mechanical strength and thermal stability of the tubular structures formed have been studied. The tubes are shown to consist of both peptides with some degree of nanoscal...

Carbon Nano Tubes (CNT’s) as field-emitters have been investigated for more than two decades and can produce relatively low emittance electron beams for a given cathode size. Unlike thermionic cathodes, CNT cathodes are able to produce electrons at room temperature and relatively low electric field (a few MV/m). In collaboration with FermiLab, we have recently tested CNT cathodes both with DC a...

Submitted by drupal on Wed, 10/23/2013 18:04 Firm: Applied Material Systems Engineering, Inc. (AMSENG) [2] Award Solicitation: NASA SBIR 2010 Phase I Solicitation [3] Award ID: SBIR_10_P1_104053 Award Topic: Power Management and Storage [4] Award Dollars: 100 000.00 Award Lead Center: Glenn Research Center [5] Proposal Number: S3.05-9947 Proposal Title: Evaluation of Synthesis & Processing Rout...

The excitement of nano-test-tube chemistry in a single-walled carbon nanotube is exemplified in our study on electron doping in carbon nanotubes. Electron doping through the 1D van Hove singularity of single-walled carbon nanotubes is realized via a chemical reaction of an encapsulated organocerium compound, CeCp3. The decomposition of CeCp3 inside the carbon nanotubes increases the doping leve...