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| Siddhartha S. Mukhopadhyay. |
| The ever-growing application of clays in nanotechnology rests on fundamental principles of colloid chemistry. They make soils as nature’s great electrostatic chemical reactor. Highly anisotropic and often irregular particle shape, broad particle size distribution, different types of charges within the unit cells, heterogeneity of layer charges, pronounced CEC, dis-articulation and flexibility of layers, and different modes of aggregation make clays different from other colloidal materials. Their inseparable association with the genesis of life on Earth and evolutionary diversification of Neoproterozoic life is a safety-belt of nanotechnology. 

Nanotechnology promises to be the greatest technological... |
| Tipo: Presentation |
Palavras-chave: Chemistry; Ecology; Earth & Environment. |
| Ano: 2011 |
URL: http://precedings.nature.com/documents/5807/version/1 |
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| Siddhartha S. Mukhopadhyay. |
| Nanotechnology promises to be the greatest technological breakthrough in history, doing for our control of matter what computers did for our control of information. The origins of nanoscience can be traced to clay mineralogy and crystallography when it was discovered that clay minerals were crystalline and of micrometer size. The unit cell dimensions of clay minerals are in nanometer scale in all three axes (x, y, and z). The advantages of clays are: (i) their ordered arrangements, (ii) their large adsorption capacity, (iii) their shielding against sunlight (ultraviolet radiation), (iv) their ability to concentrate organic chemicals, and (v) their ability to serve as polymerization templates. Clay minerals in nanoforms played a catalytic role in the... |
| Tipo: Presentation |
Palavras-chave: Chemistry; Ecology; Earth & Environment. |
| Ano: 2011 |
URL: http://precedings.nature.com/documents/5809/version/1 |
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| Siddhartha S. Mukhopadhyay; Vir Rajinder Parshad; Inderpreet S. Gill. |
| Nano-science coupled with nano-technology has emerged as possible cost-cutting measure to prodigal farming and environmental clean-up operations. It has ushered as a new interdisciplinary field by converging various science disciplines, and is highly relevant to agricultural and food systems. Environmental Protection Agency of USA defined nanotechnology as the understanding and control of matter at dimensions of roughly 1-100 nm, where unique physical properties make novel applications possible. By this definition all soil-clays, many chemicals derived from soil organic matter (SOM), several soil microorganisms fall into this category. Apart from native soil-materials, many new nanotech products are entering into soil system, some of which are used for... |
| Tipo: Manuscript |
Palavras-chave: Chemistry; Ecology; Earth & Environment. |
| Ano: 2009 |
URL: http://precedings.nature.com/documents/3203/version/1 |
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| Siddhartha S. Mukhopadhyay. |
| Natural agricultural production is an open system, both energy and matters are exchanged freely in this system involving interactions of geosphere (especially pedosphere), biosphere, and atmosphere. Agriculture provides crops for food and industry, fiber, fuel, auto-fuel and drugs. On one hand it faces ever escalating food prices and farmer’s suicides, and on the other hand input use efficiency is low. Present agricultural practices have made harvests toxic, mother’s milk a poison, and breathing-air venom. In this background, nanotechnology brings new hope. Nanotechnology is an interdisciplinary venture-field that converge science, engineering, and agriculture and food systems into one. The Environmental Protection Agency of the US... |
| Tipo: Presentation |
Palavras-chave: Chemistry; Ecology; Earth & Environment. |
| Ano: 2011 |
URL: http://precedings.nature.com/documents/5808/version/1 |
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