TE
科技回声
首页24小时热榜最新最佳问答展示工作
GitHubTwitter
首页

科技回声

基于 Next.js 构建的科技新闻平台,提供全球科技新闻和讨论内容。

GitHubTwitter

首页

首页最新最佳问答展示工作

资源链接

HackerNews API原版 HackerNewsNext.js

© 2025 科技回声. 版权所有。

Surprising effect of light could change solar power generation

63 点作者 merijn481大约 14 年前

4 条评论

dhs大约 14 年前
Source paper: “Optically-induced charge separation and terahertz emission in unbiased dielectrics” <a href="http://www.google.com/url?sa=t&#38;source=web&#38;cd=2&#38;ved=0CCkQFjAB&#38;url=http%3A%2F%2Fwww.eecs.umich.edu%2F~scr%2FFisherJAP2011.pdf&#38;rct=j&#38;q=%E2%80%9COptically-induced%20charge%20separation%20and%20terahertz%20emission%20in%20unbiased%20dielectrics%E2%80%9D&#38;ei=g6vTTeiFG8_Tsga3mv3dAg&#38;usg=AFQjCNHhDNA0v13PZ-bzYTGjzH_ksOUicA&#38;cad=rja" rel="nofollow">http://www.google.com/url?sa=t&#38;source=web&#38;cd=2&#38;v...</a>
jerf大约 14 年前
This doesn't actually sound promising at all to me for solar power generation. In the original press release [1] they <i>speculate</i> that they may <i>eventually</i> reach 10% efficiency, which we <i>already have</i>. Given that the effect requires stupefyingly absurd amounts of light and that they're going to have to improve by <i>several</i> orders of magnitude to harness this effect to do real work without causing the medium to explode due to a sudden influx of a huge amount of light, all to obtain an efficiency we already can, I do not see this as likely to be useful for solar power generation.<p>I criticize the need to try to attach every bit of research to the buzzword <i>de jour</i>. This is legitimately interesting on its own and the odds of it having some further use either scientifically or for some other engineering purpose is quite good. They've established a new boundary condition on some very venerable equations, which can't hardly help but be useful at some point. Tenuous connections to an application that it probably won't be useful for weaken the point, not strengthen it.<p>[1]: <a href="http://ns.umich.edu/htdocs/releases/story.php?id=8368" rel="nofollow">http://ns.umich.edu/htdocs/releases/story.php?id=8368</a>
dhimes大约 14 年前
The authors argue that, in a dielectric medium, light can induce an electric dipole moment <i>in the direction of the light propagation</i> by shifting the average location of atomic electrons in that direction. This moment becomes a means of storing energy, and they expect that heat loss would be much less than in traditional semiconductor solar cells.
dylanrw大约 14 年前
Is it just me or does the Smart Energy Show logo look like: <a href="http://i9.photobucket.com/albums/a56/Billy2600/512px-Aperture_Sciencesvg.png" rel="nofollow">http://i9.photobucket.com/albums/a56/Billy2600/512px-Apertur...</a> :D