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Female Entrepreneurship and the New Venture Creation
Women represent the fastest growing group of entrepreneurs today. Tracing women's journey along the venture creation process, Kariv's book highlights the creatively different ways in which women approach the entrepreneurial enterprise.
Nanotube Superfiber Materials
Nanotube Superfiber Materials refers to different forms of macroscale materials with unique properties constructed from carbon nanotubes. These materials include nanotube arrays, ribbons, scrolls, yarn, braid, and sheets. Nanotube materials are in the early stage of development and this is the first dedicated book on the subject. Transitioning from molecules to materials is a breakthrough that will positively impact almost all industries and areas of society. Key properties of superfiber materials are high flexibility and fatigue resistance, high energy absorption, high strength, good electrical conductivity, high maximum current density, reduced skin and proximity effects, high thermal cond...
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Advanced Processing and Manufacturing Technologies for Nanostructured and Multifunctional Materials II, Volume 36, Issue 6
The Ceramic Engineering and Science Proceeding has been published by The American Ceramic Society since 1980. This series contains a collection of papers dealing with issues in both traditional ceramics (i.e., glass, whitewares, refractories, and porcelain enamel) and advanced ceramics. Topics covered in the area of advanced ceramic include bioceramics, nanomaterials, composites, solid oxide fuel cells, mechanical properties and structural design, advanced ceramic coatings, ceramic armor, porous ceramics, and more.
Nanotube Superfiber Materials
Medical change is coming. Robots and tiny machines built using nanoscale materials are going to fundamentally change engineering at the microscale and medicine will be the first area to benefit. In tiny machine design, copper and iron are replaced with carbon nanotube superfiber wire and magnetic nanocomposite materials. Because of the small size of tiny machines, high magnetic fields can be generated and high-force, high-speed devices can be built. Tiny machines are still in the early stages of being built and this chapter describes their engineering design and the work underway to build them. The tiny machines will operate inside the body and detect disease at an early stage, then provide ...
Nanotube Superfiber Materials
Ultralong carbon nanotubes (CNTs) are ideal building blocks for nanodevices and superstrong fibers. Due to their high-aspect-ratio structure formed from sp2 hybrid C–C bonds, they have extraordinary mechanical, electrical and thermal properties. It is of great importance to synthesize ultralong CNTs with controlled structures as well as optimized properties for their applications. This chapter discusses the synthesis methods, growth mechanisms, structures, electrical and mechanical properties, as well as the applications of ultralong CNTs. We show that the controlled synthesis of ultralong CNTs with certain structures and properties is of fundamental importance for their applications. Finally, we also show that the mechanical properties of ultralong CNTs are near the theoretical value, showing great potential for their applications in superstrong fibers.
The Sixth International Symposium on Neural Networks (ISNN 2009)
This volume of Advances in Soft Computing and Lecture Notes in Computer th Science vols. 5551, 5552 and 5553, constitute the Proceedings of the 6 Inter- tional Symposium of Neural Networks (ISNN 2009) held in Wuhan, China during May 26–29, 2009. ISNN is a prestigious annual symposium on neural networks with past events held in Dalian (2004), Chongqing (2005), Chengdu (2006), N- jing (2007) and Beijing (2008). Over the past few years, ISNN has matured into a well-established series of international conference on neural networks and their applications to other fields. Following this tradition, ISNN 2009 provided an a- demic forum for the participants to disseminate their new research finding...
Nanotube Superfiber Materials
Nanotubes are a unique class of materials because their properties depend not only on their composition but also on their geometry. The diameter, number of walls, length, chirality, van der Waals forces, and quality all affect the properties and performance of nanotubes. This dependence on geometry is what makes scaling-up nanotubes to form bulk material so challenging. Nanotubes are also unusual because they stick together to form bundles or strands. Nanotube superfiber materials are fibrous assemblages of nanotubes and strands. The hope and dream of researchers around the world is that nanotube superfiber materials will have broad applications and change engineering design. This chapter gives a perspective on nanotube superfiber development. This chapter discusses new applications—where we think we can go with the material properties and what applications will be enabled—and new techniques for developing superfiber material.
Nanotube Superfiber Materials
Carbon nanotube (CNT) yarn represents one of the most remarkable macrostructures of CNT with its excellent performance in terms of mechanical and electrical properties. Various synthesis methods have been developed and an increasing number of applications have been reported to date, making yarn production one of the most active fields in current research on nanomaterials. In this chapter, we focus on the direct synthesis of long CNT yarns by chemical vapor deposition, including some discussions of the growth parameters and key characteristics of as-grown yarns. A general introduction to the potential applications of CNT yarns/fibers is given to outline its broad prospects in different fields.
Nanotube Superfiber Materials
Ultralong multiwalled carbon nanotube arrays (forests) were grown by chloride-mediated chemical vapor deposition, in which iron chloride was used as a catalyst precursor. Highly spinnable millimeter-long arrays were grown with a very rapid growth rate of 100 μm/min. By stacking long-lasting carbon nanotube (CNT) webs, unidirectionally aligned CNT sheets were fabricated. The sheet was highly anisotropic in electrical and thermal properties and due to high alignment of the CNTs in the sheets. CNT yarns were fabricated using the millimeter-long CNTs and a detailed analysis of various postspin processes, including postspin twisting and multiply twisting, and their effect on CNT yarns were studi...
