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Record High Frequency Achieved
eldavojohn writes "Researchers at UCLA Henry Samueli School of Engineering and Applied Science managed to push our control of frequencies to another level when they hit a submillimeter 324 gigahertz frequency. As any signal geek out there might tell you, this is a non-trivial task. 'With traditional 90-nanometer CMOS circuit approaches, it is virtually impossible to generate usable submillimeter signals with a frequency higher than about 190 GHz. That's because conventional oscillator circuits are nonlinear systems in which increases in frequency are accompanied by a corresponding loss in gain or efficiency and an increase in noise, making them unsuitable for practical applications.' The article also talks about the surprising applications this new technology may evolve into."
The article also talks about the surprising applications this new technology may evolve into
Like making your dog's head explode.
Think of the bees :p
New weapons for the military-industrial-Congressional complex.
War mongeringly yours,
George W. Bush
No folly is more costly than the folly of intolerant idealism. - Winston Churchill
Precision phase coherent control of lasers has become possible in the last ten years- Laser beams at frequencies exceeding 1 PHz (10^15 Hz) have been precisely controlled, phase locked, and tuned to have frequencies that are *exact multiples* of our best microwave frequency standards (e.g, cesium). It works the other way too-- our most precise microwave-frequency signals come from divided-down optical frequency references now! See also: 2005 nobel in physics.
More than 15 years ago, quite a few of the students at the physics lab I was teaching had their oscillating circuits reach 483 terahertz and more pretty easily. For a short amount of time that is.
... how they are able to visualize such high frequencies. How do they know they succeeded?
The more you regulate a company, the worse its products become.
They found frequencies... they didn't even know existed?!
+1 funny
-8 bad movie
-9000 overrated
-- 'The' Lord and Master Bitman On High, Master Of All
Check out http://www.arrl.org/qst/worldabove/dxrecords.html for the Amateur Radio DX records. This was achieved long ago and at higher frequencies. Highest RF frequency used for a confirmed two-way communication was 403 GHz between WA1ZMS/4 (FM07ji) and W4WWQ/4 (FM07ji) on 21-Dec-2004 over a distance of 1.42 kilometers. Achieving a frequency is one thing but being able to use it is another.
Did they use computers, the internet or any other geek method to kill? No? Freakin' lasers on their heads?
Custom electronics and digital signage for your business: www.evcircuits.com
This technology is another step along to road to widespread technology exploiting Terahertz radiation, which is the region of the EM-spectrum between IR and microwaves. Near the end of the article, they mention the possibility of creating imaging systems that can, for example, see through clothes. These applications of so-called T-rays have in fact already been demonstrated. For example, the image in this article shows a man concealing a knife, which is easily visible in the T-ray image. (See also some other pictures here.) T-rays reflect strongly off of metals but can penetrate to varying extents through things like clothing and tissue. The military and security applications are obvious. However it would also bring up new kinds of medical imaging, and has been investigated for quality control, too (for example, scanning the inside of foods in assembly lines, etc.). In the previous link I put, there is an example of scanning through a Hershey bar, where you can see the positions of the nuts.
Suffice it to say this is an area of active research that may have many, many applications.
If aliens are calling then they'd probably be using frequencies along those lines. The logic would be that if they found using such frequencies to be technologically challenging to use why would they bother to communicate with an abundance of lesser civilizations when they could potentially benefit from communicating with equal or superior civilizations across the cosmos?
- John
http://www.jabcreations.com/
Red/orange LEDs typically have a lifetime measured in the 10,000+ hour range, when reasonably driven. A $1 blue LED will provide a reliable 600+ THz.
"National Security is the chief cause of national insecurity." - Celine's First Law
pearls before swine
1. Every news channel is reporting it right now.
2. Slashdot has a 24 hour story submission turn around time (I submitted a Garry Kasparov storry and they didn't post another submitted one on same topic til the next day)
3. It is a tragedy and saddening, but again more people will die in Iraq today (and tomorrow) and in the scope of things it isn't the end of the world as we know it and may not be on topic with Slashdot at this point. Too much speculation of what happened as it is...
"I am the king of the Romans, and am superior to rules of grammar!"
-Sigismund, Holy Roman Emperor (1368-1437)
My flashlight achieves orders of magnitude higher frequencies in a snap!
What were their majors? May affect the job market. If they were going into Law or Marketing, we already have enough of those.
0xB315AA8D852DCD3F3DCA578FD2E0BF88
My device runs at 500+ THz for several hours on one set of batteries, fits on a keyring, and I bought it at Fry's.
Give a man a fish and you have fed him for today. Teach a man to fish, and he'll say "WHERE'S MY FISH, YOU IDIOT?"
Didn't they create and usefully apply terahertz frequencies four years ago? Terahertz > 190 gigahertz, right? What's the big deal?
4 7
http://slashdot.org/article.pl?sid=03/02/11/18482
Well, my young fella-me-lad, with your 800K+ uid you may not remember this, but there once was a Slashdot contributor named Jon Katz who would have found a way to make this about geeks, no matter what contortions were necessary. Katz was a master of modern journalism: if a story wouldn't cooperate, he just keep pounding at it until he made it his bitch -- or vice versa, didn't really matter.
People across the nation began shitting themselves for no apparent reason. Victims recall feeling an unusual vibration in their bowels before immediately discharging feces. Some believe an evil genius may have finally discovered the "brown note". For Action 11 news I'm....oh god.....>PPHHBBBBHHTTHHHHH!!!!!
Take that Mythbusters!!!
Where can I download the MP3
*buys a lot of red tape*
it keeps them out you know
-judging another only defines yourself
My late dog, Rover (may he rest in peace), had his head explode when my sister put on a Mariah Carey CD.
I had thought the article would be about a breakthrough in Slashdotter's wanking techniques...
Sincer "submillimeter" implies a frequency greater than 300GHz, it makes no sense to talk about "usable submillimeter signals with a frequency higher than about 190 GHz".
Another menacing blow to the psyche of cutoff-loving never-nudes everywhere. Time to buy plastic underwear.
Oh man, I haven't thought of Katz for ages. Because of that cartoon back then (when Foxtv was cool), I always viewed his posts through squiggle vision.
I drank what? -- Socrates
While conventional oscillator circuits may be nonlinear systems, submicron research has been performed at the National Institute for Standards and Technology (NIST) and has focused on hemi-quazmatron acceleration under free radical assignment projection. While this sounds like a lot of bunk terminology, it is actually where the future lies for this field. The UCLA HSSEAS has often proven a valuable partner in this research, and has taken a slightly different approach this to research.
Regardless, pushing sub-millimeter frequency into the audio sphincter is always difficult because it runs counter to the way it should be. Simply put, things should be emitted FROM the sphincter, and not entered into it. However, when using sub-millimeter waves, the sphincter cannot contract. The scientific name for this is an 'audio rim jobe' -- after Dr. Heigh Liek ScrimJobes from the Netherlands.
Furthermore, research has shown that massaging the audio sphincter often causes it to relax. The only problem is that Dr ScrimJobes discovered the audio sphincter is in his pants, and that only women can massage it.
I am open source, and Linux baby!
I am familiar with all of the words in the summary, yet I am unable to comprehend it.
The size of the circuits and ability to penetrate materials makes this technology part of a future Tricoder type device.
This post was clearly planted by the U.S. government.
"When the atomic bomb goes off there's devastation...but when the atomic bong goes off there's celebraaaaation!"
What they did sounds like an extension of the technique used in push-push oscillators to "double" the oscillation frequency.
The basic principle behind a push-push oscillator is that two out-of-phase signals of fundamental frequency f_o are combined such that the fundamental signal and the odd harmonics cancel, while the second harmonic at 2*f_o add constructively. In the case of a push-push oscillator, you only need two signals 180 degrees out of phase. This could be generated with a differential VCO.
Using a push-push oscillator is a well known technique for increasing the frequency of oscillation of a VCO beyond the fMAX of a transistors at a given process node.
The only disadvantage with push-push oscillators is that you end up losing a lot of power as the second harmonics's power will always be much smaller than the power in the fundamental frequency of the VCO.
These higher frequencies are pissing off all the stealth flying saucers in the area. They use the frequencies that humans don't use, but their range gets smaller and smaller as we move up the spectrum. They will retaliate with more ubductions and anal probes. You've been warned.
Table-ized A.I.
From TFA: "The researchers first generated a voltage-controlled CMOS oscillator, or CMOS VCO, operating at a fundamental frequency of 81GHz with phase-shifted outputs at 0, 90, 180 and 270 degrees, respectively. By linearly superimposing these four (or quadruple) rectified phase-shifted outputs in real time, they ultimately generated a waveform with a resultant oscillation frequency that is four times the fundamental frequency, or 324 GHz."
That's cheating!
It is a tragedy and saddening, but again more people will die in Iraq today (and tomorrow)
The latter is, sadly, not news. The former is. Honestly, the original poster's comment was the first I'd heard of it.
Buy some now.
--- Grow a pair, liberals... stop letting the Republicans bully you!
So will we now start seeing tinfoil underwear to go with the hats?
... as it will finally allow a PC processor to run at the speeds necessary to have fluent Vista GUI ... now if someone would invent the 16TB ram chip, so that the also necessary 64TB of main memory could be added to said machine ...
more people will die in Iraq today
And the US! Even if you only count accidental deaths, there are about three times as many automobile-related fatalities in a single day than what happened there. The national murder rate per day is about equivalent to the number of deaths in this shooting. In the grand scheme of things, it hardly makes a bump.
This is going to be a problem for quarter-wave diapole fabrication.
Heard any good sigs lately?
Damn you! I thought I'd never have to hear about JonKatz again! Curse you for soiling my mind!
The road to hell is paved with good intentions.
Just send your kid to school with tinfoil underwear.
I can create an even higher frequency for a fraction of the cost.
(Turns on flashlight)
I can even send information.
(Blinks flashlight)
I admit the data capactity needs work, though.
No one over 40 will be able to hear it anyway.
I guess it could be a new Ring Tone.
When Fascism comes to America, it will call itself Anti-Fascism, and tell you to give up your guns.
Light? Sound? Processor cycles? Faps?
If it's Faps then that must have been some mighty bad chaps they had at the end... Either that or they were able to invent some extremely low friction lube...
I think pot usage must be on the rise.
The higher the technology, the sharper that two-edged sword.
Imagine this, Your whole squad have this "special" goggles. And in battle you see hundreds... nea~ THOUSAND of naked man running around with thier dick swinging around likes its a pendulum or something and balls jumping up and down uncontrollable. I tell you man... someone going to fall down and broke into laughter and get shoot for it. And laughter spreads like virus too...
"Not exactly what the /. headline implies, though."
;)
Ahh Grasshopper, naw, really? With a UID of (872511) your not exactly new here. So I guess you must actually have a life. But just so you know, wink, wink, such is pretty common here,and getting more so every day. Remember this in a few weeks when the same topic is submitted again.
Wabi-Sabi
matthew
Will this 324 GhZ Pentium be enough to run VISTA ?