carbon nanotubes
STRESS DISTRIBUTION IN NANOTUBES
(All my simulations and research is conducted under guidance of respected Dr. Henry Tan, Uni. of Manchester)
STRESS DISTRIBUTION IN NANOTUBES
Measurements of near-ultimate strength for multiwalled carbon nanotubes and irradiation-induced crosslinking improvements
For more than 15 years, carbon nanotubes (CNTs) have been the flagship material of nanotechnology. Researchers have conceived applications for nanotubes ranging from microelectronic devices to cancer therapy. Their atomic structure should, in theory, give them mechanical and electrical properties far superior to most common materials.
The Industry's First Commercially Available Off-The-Shelf MEMS Microhotplate For Chemical Sensors Applications
Laguna Beach, CA June 23, 2008 -- Kebaili Corporation a leading California based high-tech company in MEMS and nanotechnology, announced today the release of the KMHP-100 Series, the industry’s first commercially available off-the-shelf MEMS microhotplates for researchers and scientists in innovative chemical sensor research and development applications.
Large deformation elasticity and damping of individual carbon nanotubes in radial direction
Carbon nanotubes as strong fibers in CNT-composites are subjected to large deformations in radial direction. They provide strength as well as structural damping in the composite. Despite being strong in the axial direction, CNTs are rather soft in the radial direction.
Multiwalled carbon nanotubes: the thicker, the softer
I. Arias and M. Arroyo, Size-Dependent Nonlinear Elastic Scaling of Multiwalled Carbon Nanotubes, Phys. Rev. Lett. 100, 085503 (2008).
Watching buckyballs shrink
PRL 99, 175503 (2007); Jianyu Huang, Feng Ding, Kun Jiao, Boris I Yakobson
Youtube Movie: http://www.youtube.com/watch?v=NSNlE8AreeM http://www.nature.com/nnano/reshigh/2007/1107/full/nnano.2007.404.html
Any open source code to generate carbon nanotube cap?
Generation of open ends carbon nanotubes coordinates (atomic positions) is easy and the generation of cap for these carbon nanotubes is extremely difficult. Some of the half-fullerenes (C60, C240, C540…) fit as a cap for the armchair and zigzag nanotubes. NanotubeModeler (http://www.jcrystal.com/products/wincnt/index.htm) software generates the carbon nanotubes with cap but they are limited to few armchair and zigzag configurations.
Carbon nanotube quasimelting diamond
Huang, Nano Lett. 7, 2335 (2007); Philip Ball, Nature 448, 396 (2007)
Watch movies at: http://pubs3.acs.org/acs/journals/supporting_information.page?in_manusc…
Super stretchy carbon nanotubes
Huang et al., PRL 98, 185501 (2007)
Watch movies at: http://netserver.aip.org/cgi-bin/epaps?ID=E-PRLTAO-98-002719
We report exceptional ductile behavior in individual double-walled and triple-walled carbon nanotubes at temperatures above 2000 C, with tensile elongation of 190% and diameter reduction of 90%, during in situ tensile-loading experiments conducted inside a high-resolution transmission electron microscope. Concurrent atomic-scale microstructure observations reveal that the superelongation is attributed to a high temperature creep deformation mechanism mediated by atom or vacancy diffusion, dislocation climb, and kink motion at high temperatures. The superelongation in double-walled and triple-walled carbon nanotubes, the creep deformation mechanism, and dislocation climb in carbon nanotubes are reported here for the first time.