New method for harvesting energy from light

“Harvesting energy from light” has an exotic sci-fi vibe – it’s about better methods for extracting solar energy to generate electricity, and improved fiber optic technology for communications – applications we’re familiar with — this isn’t the Bellero Shield.

The new work centers on plasmonic nanostructures, specifically, materials fabricated from gold particles and light-sensitive molecules of porphyin, of precise sizes and arranged in specific patterns. Plasmons, or a collective oscillation of electrons, can be excited in these systems by optical radiation and induce an electrical current that can move in a pattern determined by the size and layout of the gold particles, as well as the electrical properties of the surrounding environment. Because these materials can enhance the scattering of light, they have the potential to be used to advantage in a range of technological applications, such as increasing absorption in solar cells.

Link to University of Pennsylvania press release.

Lessig Blog, v2: On the emptiness in the concept of “neutrality”

Lessig Blog, v2: On the emptiness in the concept of “neutrality”

Consider the Lobster: 2000s Archive : gourmet.com

Consider the Lobster: 2000s Archive : gourmet.com

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Grad Students

Its the darkest of ironies that at precisely the historical moment that the human race need as many people as possible to parse complex problems –climate change, energy crises, lock-jawed governing bodies, and brand new forms of systemic poverty– being a grad student has become something akin to a feudal apprenticeship. You are at a severe disadvantage if you do not have some source of external income and/or a profound gift for writing grants and selling yourself as a professional scholar. It means that the young scions of families that have benefited the most from corporate welfare and oligarchy are the ones that will graduate into the positions of power charged with nothing less than saving our planetary civilization. It means that the large corporate and nonprofit entities that have amassed enormous war chests will be funding and directing the research of those few graduate students that don’t have a personal stake in maintaining an unsustainable status quo.

http://thesocietypages.org/cyborgology/2013/07/23/grad-students-are-ruining-everything/