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...