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The Solar Cell That Turns 1 Photon into 2 Electrons
Solar cells are picky. If an incoming photon has too little energy, the cell won’t absorb it. If a photon has too much, the excess is wasted as heat. No matter what, a silicon solar cell can never generate more than one electron from a single photon. Such harsh quantum realities severely limit the conversion efficiency of photovoltaic cells, and scientists have spent decades looking for work-arounds. [More] (Source: Scientific American Topic - Nanotechnology)
Source: Scientific American Topic - Nanotechnology - April 18, 2013 Category: Nanotechnology Tags: Energy & Sustainability,Technology,Alternative Energy Technology,Energy Sustainability,Alternative Energy Technology,Physics Source Type: news

Doughnuts Dusted with Nanopowder? Blech!
There are nanosize particles in your food. Does this make you nervous?Food companies have been interested in using nanotechnology to intensify flavors and make products creamier without added fat. But that has nothing to do with the titanium dioxide nanoparticles, less than 10 nanometers across, that were found recently in the powdered-sugar coating on doughnuts from Dunkin' Donuts and the now defunct Hostess. The microscopic flakes may have ended up there by happenstance--a result of the milling process used on the powdered-sugar mixture. We may have been ingesting them for years. [More] (Source: Scientific American ...
Source: Scientific American Topic - Nanotechnology - April 15, 2013 Category: Nanotechnology Tags: More Science Source Type: news

Hard Up: Nanomaterial Rivals Hardness of Diamond
A nanostructured and transparent form of boron nitride is harder than some forms of diamond -- Read more on ScientificAmerican.com (Source: Scientific American Topic - Nanotechnology)
Source: Scientific American Topic - Nanotechnology - January 17, 2013 Category: Nanotechnology Tags: More Science Chemistry Physics Source Type: news

Hard Up: Nanomaterial Rivals Hardness of Diamond
It’s only a matter of time before a movie villain pulling off the crime of the century needs a cutting tool that is harder than anything else on Earth. Perhaps it’s a burglary that... -- Read more on ScientificAmerican.com (Source: Scientific American Topic - Nanotechnology)
Source: Scientific American Topic - Nanotechnology - January 17, 2013 Category: Nanotechnology Tags: More Science,Chemistry,Physics Source Type: news

Hard Up: Nanomaterial Rivals Hardness of Diamond
It’s only a matter of time before a movie villain pulling off the crime of the century needs a cutting tool that is harder than anything else on Earth. Perhaps it’s a burglary that involves cutting into a case made of diamond--which, as we have all learned from countless heist films, is itself hard enough to cut glass. Or maybe it’s a devious scheme predicated on boring a hole into the depths of the planet with the world’s hardest drill bit. [More] (Source: Scientific American Topic - Nanotechnology)
Source: Scientific American Topic - Nanotechnology - January 17, 2013 Category: Nanotechnology Tags: More Science,Chemistry,Physics Source Type: news

How Artificial Arms Could Connect to the Nervous System (preview)
In one of the most iconic scenes in science-fiction films, Luke Skywalker casually examines his new synthetic forearm and hand. The Star Wars hero is able to move the fingers by extending and... -- Read more on ScientificAmerican.com (Source: Scientific American Topic - Nanotechnology)
Source: Scientific American Topic - Nanotechnology - January 14, 2013 Category: Nanotechnology Tags: Health,Health,Mind & Brain,Technology,Medical Technology,More Science,Neuroscience,Thought Cognition,Biotechnology,Biotechnology,Biology,Everyday Science Source Type: news

How Artificial Arms Could Connect to the Nervous System (preview)
In one of the most iconic scenes in science-fiction films, Luke Skywalker casually examines his new synthetic forearm and hand. The Star Wars hero is able to move the fingers by extending and contracting pistons shown through an open flap along the wrist. Then he senses the robotic surgeon's pinprick of one of the fingers. Not only can the prosthesis be moved with Skywalker's thoughts, it feels to him like his own hand. [More] (Source: Scientific American Topic - Nanotechnology)
Source: Scientific American Topic - Nanotechnology - January 14, 2013 Category: Nanotechnology Tags: Health,Health,Mind & Brain,Technology,Medical Technology,More Science,Neuroscience,Thought Cognition,Biotechnology,Biotechnology,Biology,Everyday Science Source Type: news

Computing in 2165 (preview)
The Science Of The Next 150 Years: 150 Years in the Future [More] -- Read more on ScientificAmerican.com (Source: Scientific American Topic - Nanotechnology)
Source: Scientific American Topic - Nanotechnology - December 31, 2012 Category: Nanotechnology Tags: Technology Source Type: news

Computing in 2165 (preview)
The Science Of The Next 150 Years: 150 Years in the Future [More] (Source: Scientific American Topic - Nanotechnology)
Source: Scientific American Topic - Nanotechnology - December 31, 2012 Category: Nanotechnology Tags: Technology Source Type: news

Environmental Regulator Launches New Effort to Monitor Hormonelike Chemicals
Spurred by mounting scientific evidence, the U.S. Environmental Protection Agency is initiating a new effort to examine whether low doses of hormone-mimicking chemicals are harming human health and... -- Read more on ScientificAmerican.com (Source: Scientific American Topic - Nanotechnology)
Source: Scientific American Topic - Nanotechnology - December 13, 2012 Category: Nanotechnology Tags: Energy & Sustainability,Health,Ethics,Energy Sustainability,Environment,Society Policy Source Type: news

Environmental Regulator Launches New Effort to Monitor Hormonelike Chemicals
Spurred by mounting scientific evidence, the U.S. Environmental Protection Agency is initiating a new effort to examine whether low doses of hormone-mimicking chemicals are harming human health and whether chemical testing should be overhauled. [More] (Source: Scientific American Topic - Nanotechnology)
Source: Scientific American Topic - Nanotechnology - December 13, 2012 Category: Nanotechnology Tags: Energy & Sustainability,Health,Ethics,Energy Sustainability,Environment,Society Policy Source Type: news

Graphene Towers Promise "Flexi-Electronics"
It can support 50,000 times its own weight, springs back into shape after being compressed by up to 80% and has a density much lower than most comparable metal-based materials. A new superelastic,... -- Read more on ScientificAmerican.com (Source: Scientific American Topic - Nanotechnology)
Source: Scientific American Topic - Nanotechnology - December 4, 2012 Category: Nanotechnology Tags: Technology,More Science,Physics,Technology Source Type: news

Waxing Innovative: Researchers Pump Up Artificial Muscles Using Paraffin
Artificial muscles have mostly been flaccid as a replacement for motors. Could carbon nanotube yarns soaked in paraffin wax change this? -- Read more on ScientificAmerican.com (Source: Scientific American Topic - Nanotechnology)
Source: Scientific American Topic - Nanotechnology - November 16, 2012 Category: Nanotechnology Tags: More Science Chemistry Physics Energy & Sustainability Health Biotechnology Communications Consumer Electronics Source Type: news

Waxing Innovative: Researchers Pump Up Artificial Muscles Using Paraffin
When Scientific American heard from chemist Ray Baughman a year ago, he and his international team of nanotechnologists had taken artificial-muscle technology to the next level . Their... -- Read more on ScientificAmerican.com (Source: Scientific American Topic - Nanotechnology)
Source: Scientific American Topic - Nanotechnology - November 16, 2012 Category: Nanotechnology Tags: Technology,Health,Physics,Consumer Electronics,Energy & Sustainability,Biotechnology,Biotechnology,Communications,Chemistry,More Science Source Type: news