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Mathematicians Tame Rogue Waves, Illuminating Future of LED Lighting
- FreakyT 9y agoIn the photo, that watch looks like a Pebble Time Round! Such a well-designed smartwatch, it's too bad they went out of business.
- lathiat 9y agoTruth in this most unrelated comment.
- jessaustin 9y agoSince just discovering the problem got Anderson a Nobel, actually solving it should get Mayboroda and Filoche one, shouldn't it?
- Sniffnoy 9y agoThe title here is confusing; as best I can tell, this article doesn't relate to what's usually meant by the term "rogue waves" (see: https://en.wikipedia.org/wiki/Rogue_wave https://en.wikipedia.org/wiki/Rogue_wave ).
- sand500 9y agoMaybe: https://en.m.wikipedia.org/wiki/Optical_rogue_waves https://en.m.wikipedia.org/wiki/Optical_rogue_waves
- cameronfr 9y agoI do think there might be some relation -- rogue (ocean) waves are the result of many waves interfering such that an (ocean) wave of exceptional amplitude is formed, just as localized regions are the result of many waves interfering such that a standing wave is formed at said regions. Then the idea of a rogue wave can be understood to mean a region of interference in which a wave of strange properties is formed -- such as a standing wave or a wave of exceptional amplitude.
- skybrian 9y agoIt would be interesting to know more about how this affects the design of current and future LED's.
- lightedman 9y agoNot very much. The real problem LEDs face is the Auger Effect.
- c517402 9y agoLEDs and photovoltaics are both PN junctions. I wonder why they don't mention making better photovoltaics, or why their landscape function can't be used to improve photovoltaics.
- lightedman 9y agoMost likely because this research seems to deal with materials that emit, and not absorb.
- jonssons 9y agotl;dr: you'll have to buy new led lights over 5 years.
- Zak 9y agoI suspect the difference in performance will be very incremental, not revolutionary. Sure, efficiency will improve, but the big story will probably be higher production yields and more consistency. LEDs are already efficient enough that I'd focus on color quality above all else when selecting them.
- adrianN 9y agoFinally we can design open plan offices where the noise stays localized at its producer :)
- have_faith 9y agoIf only materials existed with the power to block electromagnetic waves and sounds waves from propagating... one day perhaps.
- coldcode 9y agoLet's build a wall!
- danmaz74 9y ago> Engineers need to build LEDs that more efficiently convert electrons into light, if the devices are to become the future of artificial lighting, as many expect they will. I was under the impression that LEDs were already the present of artificial lighting...
- eecc 9y agoLater on it says we don't really know how to optimize the light emission process. This mathematical tool provided a means to develop better simulations and explore the parameters more efficiently
- slackingoff2017 9y agoLED's are nearing theoretical max efficiency, somewhere near 220lm/watt for pure white light. Essentially the perfect light source. The most efficient white LED's are actually blue ones with a white phospor but it's still pretty close. I wish we could do the same with sound and cameras, a place where our efficiency is still laughable theoretically and compared to the natural human sensors.
- Zak 9y agoMost commercially produced white LEDs are a phosphor over a blue or occasionally violet LED. The alternative is to mix the light from red, green and blue LEDs, which produces a very peaky spectrum that distorts colors badly. Regardless of efficiency, the phosphor approach is more popular because it produces white light that's tolerable to use. Even phosphor spectra have peaks and valleys though, and evening them out usually reduces efficiency. The most common representation of this is color rendering index (CRI), which measures color accuracy. I think that's usually the right tradeoff, as a little less light with a broad spectrum is usually more effective illumination, but the market is driven by the mighty lumen-per-watt.
- euyyn 9y ago> The alternative is to mix the light from red, green and blue LEDs, which produces a very peaky spectrum that distorts colors badly What does the phosphor emit? There's no "white" wavelength. So a more homogeneous spectrum?
- mdf 9y agoDoes anyone with a background in electrical engineering, material physics or something related know, if the same techniques described here could have any applications on mitigating electromagnetic side-channel attacks (and possibly lower the power consumption) of electric circuits?
- lightedman 9y agoLower consumption, possibly. Mitigate EM attacks? No.
- tankenmate 9y agoReading this article I struck me that you could use the same analysis to design FinFET junctions to have the localisations coincide with the dielectric boundary to reduce gate leak, and hence power consumption and heat.
- coldcode 9y agoA lot of math takes decades to become something practical, it must be gratifying to discover something that has immediate and widespread applicability.
- 24gttghh 9y agoAlso briefly mentioned in the article: http://www.ipam.ucla.edu/research-articles/fractal-acoustic-barrier/ http://www.ipam.ucla.edu/research-articles/fractal-acoustic-... This look's very promising. Imagine the public health benefits we could reap from eliminating 98% of highway noise! And that's from 2009.