21-09-2010, 11:59 PM
hey can u please provide me seminar report on nanotechnology.. it will be very helpfull... thanking you..
21-09-2010, 11:59 PM
hey can u please provide me seminar report on nanotechnology.. it will be very helpfull... thanking you..
23-09-2010, 09:57 AM
hi
you can read more on 'nano technology' from the below given thread. https://seminarproject.net/Thread-nanote...nar-report https://seminarproject.net/Thread-nanote...ode=linear Regards.
13-09-2012, 05:29 PM
NANO TECHNOLOGY
NANO TECHNOLOGY.pdf (Size: 172.87 KB / Downloads: 119) ABSTRACT: Nanoelectronics is potentially one of the branches of Nanotechnology with the most significant commercial impact and covers a very wide range of interdisciplinary areas of research and development such as telecommunications, automotive, multimedia, consumer goods and medical systems. The emergence of new research directions such as Hybrid molecular electronics, One dimensional structures such as nanowires, Nano– electromechanical–systems (NEMS) or Carbon Nanotubes (CNT) will strategically impact on future developments in the nanoelectronics domain and their long-term applications. These opportunities for alternative nanodevices (molecularbased technologies, nanomechanics, etc.), required by miniaturization, still required a number of technological challenges to be tackled such as interconnections. Nanotubes, Nanocapsules, Nanotextiles, Stretchable silicon, Nanoelectronic displays and difficult problems in nanotechnology are discussed in this paper. WHAT IS NANO TECHNOLOGY? The “nano” in nanotechnology comes from the Greek word nanos, which means dwarf. Scientists use this prefix to indicate 10-9 or one-billionth. Thus a nanosecond is onebillionth of one second; a nanometer is one-billionth of one meter, etc. Objects that can be classified as having something to do with nanotechnology are larger than atoms but much smaller than we can perceive directly with our senses. One way to look at this size scale is that one nanometer (nm) is about 100,000 times smaller than the diameter of a single human hair. NANO CAPSULES Conceptually, the ideal case for optimal activity would be to entrap the ODNs within the internal core of polymeric nanocapsules in order to mask them and to prevent them from any interaction with proteins. In the state of the art, all the methodologies available to prepare nanocapsules involve the preparation of emulsions, either O/W emulsions which lead to nanocapsules with an oily core suspended in water (Al Khouri process) or W/O emulsions which lead to nanocapsules with an aqueous core suspended in oil (Vranckx). Oily nanocapsules are unable to encapsulate the water soluble ODNs and aqueous nanocapsules in an oily phase are not compatible with the conditions for i.v. administration. This is the reason why, in this study, we have developed a new process of preparation of aqueous nanocapsules containing ODNs which were successfully suspended in a water medium. We have localized the ODNs in the core of these nanocapsules which explains why this carrier is providing a high protection of ODNs against enzymatic degradation. |
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