Other projects included a method for detecting toxins in water using glowing bacteria and studying the effect of nano particles on other bulk particles.

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By coating their fabric with nano particles made from this new N-TiO2, the researchers have created a fabric that self-cleans in the presence of a very broad spectrum of light.

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The filter feeder fish at the bottom of the food chain then ingest these nano-particles of plastic.

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Nor is it an attempt to win newcomers over to a particular world view - the guests are not being forcibly injected with Blairite nano-particles.

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Nano bar codes are the molecular versions of traditional bar codes--metal nano-particles that have specific, recognizable chemical fingerprints that can be read by a machine, perhaps a UV lamp or optical microscope.

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The electronic nose is an array of nano-scale gas sensors--the maximized surface area of the nano-particles allows the most gas to pass over them--along with pattern recognition technology that can create a digital fingerprint (or noseprint, as the case may be) of specific smells.

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If Huang or others can successfully use nanotechnology to create junk food that tastes as good as ever but has fat and sugar replacements, or perhaps employs nano-particles that prevent fat or calories from being absorbed and stored by the body, then they've got the holy grail of food.

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The Swach's cartridge, a key component of the system, resembles Edison's electric bulb and is made up of a composite of rice-husk ash (a highly porous material derived out of paddy husk) and fine particles of nano-silver, which inhibits bacteria growth.

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Also, scientists at the Hong Kong Polytechnic University have been able to build a nano-thin layer of particles of titanium dioxide, a substance that reacts with sunlight to break down dirt and other organic material.

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