Long aspect ratio

Bacteriophage M13 has been used extensively to evolve peptides for the hinding of various biological targets. As mentioned above, these techniques will not he descrihed in this chapter. One other hiomedical area in which M13 has found use, however, is as a scaffold for cell immohUization and proliferation. As descrihed in Section 9.14.2, the long aspect ratio of the capsid allows the virus to be oriented in liquid films and... 

Although these particles are nanometers in dimension, they retain the biocompatibility, nontoxicity and stability of cellulose. As a result of their size (Figures 15.4 and 15.5), they possess unique optical and mechanical properties. For example, their long aspect ratio makes them ideal for use as strengthening agents in gels, foams and plastics. 

This approximation is justified if the concentration of the polymers is low enough. Systematic improvement of this approximation can be done by the virial expansion of the free energy. " However, for polymers of long aspect ratio L/b 1), the higher order terms are not needed because the transition is shown to occur at very low concentration. 

CNTs are not available as individual tubes (independently of the number of walls), but as tangled webs indeed, they tend to form rope-like bundles due to their long aspect ratios ( 1000) and the strong anisotropic interactions between them. TEM and high-resolution TEM (HRTEM) are the most useful techniques for the investigation of CNT dispersion before incorporation into the polymer matrix. " ... 

Historically, kenaf fibre was first used as cordage. Industry is now exploring the use of kenaf in papermaking and non-woven textiles. Like jute, most kenaf composite products exploit the long aspect ratio of kenaf fibres and fibre bundles. One way to do this is to form the kenaf into a non-woven textile mat that can be used for erosion control, seedling mulches or oil spill absorbents. After a resin is added to the kenaf mats, they can be pressed into flat panels or moulded into shapes. 

Qi, G.Q., Nathan, G.J., Kelso, R.M. 2011. Aerodynamics of Long Aspect Ratio Fibrous Particles Under Settling. Paper AJTEC2011-44061 presented at the ASME/JSME 8th Thermal Engineering Joint Conference, Honolulu, Hawaii, USA, 13-17 March. Rajabian, M., Dubois, C., Grmela, M. 2005. Suspensions of Semiflexible Fibers in Polymeric Fluids Rheology and Thermodynamics. Rheologica Acta 44 (5) 521-535. 

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