J Ravichandran, A G Manoj, J Liu, I Manna and D L Carroll2008 Nanotechnology 19 085712 (5pp)Abstract:Packaging of organic photovoltaic (OPV) devices is an important issuewhich has been rarely addressed in the past. With the recent reports of high efficiency organic photovoltaics (6%), the need to produce materials which can effectively protect the device fromdegradation due to exposure to oxygen, moisture and radiation is pressing. We report a novel Saran (a co-polymer of vinylidene chloride and acrylonitrile) based polymer nanotube composite, which shows high transparency in the visible region, good barrier properties and thermal stability, for use as an encapsulant for OPV devices. Different loadings of Saran and boron nitride nanotubes were taken and the composites were prepared to optimize the composition of the composite. UV-visible spectroscopy, infra-red spectroscopy and thermal analysis were used to characterize the composite. The barrier properties of the composite were tested on poly(3-hexylthiophene), which is used in high efficiency OPV devices.Full text PDF:http://www.iop.org/EJ/article/-alert=19995/0957-4484/19/8/085712/nano8_8_085712.pdf N.S. Xua, and S. Ejaz Huqb aState Key Lab of Optoelectronic Materials and Technologies, and Guangdong Province Key Laboratory of Display Material and Technology, Sun Yat-Sen University, Guangzhou 510275, PR ChinabCentral Microstructure Facility, Rutherford Appleton Laboratory, Didcot OX11 0QX, UKAvailable online 12 February 2005. AbstractField emission (FE) is based on the physical phenomenon of quantum tunneling, in which electrons are injected from the surface of materials into vacuum under the influence of an applied electric field. A variety of field emission cold cathode materials have been developed to date. In this review, we shall focus on several kinds of novel cold cathode materials that have been developed in the past decade. These include materials for microfabricated field-emitter arrays, diamond and related films, carbon nanotubes, other quasi one-dimensional nanomaterials and printable composite materials. In addition, cold cathode materials have a wide range of applications such as in flat panel displays, high-power vacuum electronic devices, microwave-generation devices, vacuum microelectronic devices and vacuum nanoelectronic devices. Applications are in consumer goods, military industries and also space technology. A comprehensive overview of the various applications is presented. Recently, recognizing the strong possibility that vacuum nanoelectronic devices using quasi one-dimensional nanomaterials, such as carbon nanotubes may emit electrons with driving voltages comparable to that of a solid-state device, there is a growing interest in novel applications of such devices. With such exciting opportunities, there is now a flurry of activities to explore applications far beyond those considered for the conventional hot cathodes that operate on thermionic emission. We shall discuss the details of a number of fascinating potential applications.Materials Science and Engineering: R: Reports : Novel cold cathode materials and applications tudo faz sentidonada faz sentidosentindosem ter tido! tenho dormido pouco...ha muito tempo nao ficava tanto tempo comigo,da ate uma certa "timidez"ouvir alguns pensamentos meus... Nao procure Deus na Palavra,ele esta nas entrelinhas. SE EXPLICANAO POETADISSERTA Um novo trabalho se desenha... Modelo : Lalinha Buenoveste Mery Corselet Maquiagem : TuttyCabelo : MaraLocacao : MARIAH AcessoriosDirecao de Arte & Concepcao: Wynia LopesFotografia & Tratamento : Beto Prestes Hoje a poesia me visitou...Adrian, o menino que rouba passarinhos, inventa historias e foge