The Truth About Terahertz

That low efficiency combined with the devices’ small size leads to another problem: extremely high power densities (the amount of power the devices must handle per unit area) and current densities (the amount of current they must handle per unit area). For the vacuum and solid-state devices, the power densities were in the range of several megawatts per square centimeter. Suppose you want to use a conventional vacuum traveling-wave tube, or TWT, that’s been scaled up to operate at 1 THz. Such an apparatus would require you to focus an electron beam with a power density of multiple megawatts per square centimeter through an evacuated circuit having an inner diameter of 40 µm—about half the diameter of a human hair. (The solar radiation at the surface of the sun, by contrast, has a power density of only about 6 kilowatts per square centimeter.) A terahertz transistor, with i...

Full article: http://spectrum.ieee.org/aerospace/military/the-truth-abo...

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@TandMTom » 14 Sep '12, 4pm
FYI Friday Fundamentals- The Truth about Terahertz [link]
@HendrikHaerter » 13 Sep '12, 5pm
RT @synopsys: The Truth About #Terahertz... very interesting article for the geek within me :) [link] #wireless #elect ...
@synopsys » 13 Sep '12, 5pm
The Truth About #Terahertz... very interesting article for the geek within me :) [link] #wireless #electron... - @shemmady
@shemmady » 13 Sep '12, 5pm
The Truth About #Terahertz... very interesting article for the geek within me :) [link] #snps #wireless #electronic #design
@bit_man » 13 Sep '12, 5pm
The Truth About Terahertz - IEEE Spectrum - [link] https://t.co/ZrbvjlB1
@w0uhu » 05 Sep '12, 1am
The daunting physics of Terahertz electromagnetics. @hamr [link]
@SanminaCorp » 01 Sep '12, 2pm
Do you know the truth about terahertz? [link] #Engineers @IEEE
@Sicurezzaonline » 21 Aug '12, 2pm
RT @IEEEorg: The truth about terahertz in the electromagnetic #spectrum [link] via @IEEESpectrum #science
@wikishareideas » 20 Aug '12, 9pm
RT @MHengineering: RT ‏@IEEESpectrum: The Truth About Terahertz [link] Confronting the very daunting physics of terahertz technology #engineering
@MHengineering » 20 Aug '12, 4pm
RT ‏@IEEESpectrum: The Truth About Terahertz [link] Confronting the very daunting physics of terahertz technology #engineering
@Aveniture » 20 Aug '12, 12pm
What's behind terahertz technology? Here's background information to puncture the hype and assess the real potential: [link]
@eepublishers » 20 Aug '12, 8am
RT @IEEESpectrum: : Anyone hoping to exploit theTerahertz region of the electromagnetic spectrum must be aware. [link]
@erikgregersen » 20 Aug '12, 12am
Cold water thrown on THz (or as they called it in my day, sub-mm) tech, or why you're not going to see through walls [link]
@selynca » 19 Aug '12, 2am
RT @electrosoftinc: The Truth About Terahertz [link]
@leecairnsy » 18 Aug '12, 7pm
The Truth About #Terahertz #THz [link]
@markomanka » 18 Aug '12, 2pm
The Truth About Terahertz. Daunting physics faces researchers working to exploit submillimeter EM waves [link] #futuremed
@StevenJCrowley » 18 Aug '12, 2pm
Terahertz skeptic [link]
@gmusser » 18 Aug '12, 2pm
RT @steveashleyplus: The Truth About Terahertz. Daunting physics faces researchers working to exploit submillimeter EM waves. (Spectrum): [link]
@steveashleyplus » 18 Aug '12, 10am
The Truth About Terahertz. Daunting physics faces researchers working to exploit submillimeter EM waves. (Spectrum): [link]
@GetGlobalEdge » 18 Aug '12, 6am
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@Techhrzn » 18 Aug '12, 2am
The Truth About Terahertz [link] via @zite
@leo_programer » 18 Aug '12, 2am
terahertz... posible realidad?? [link]
@bdpatoday » 18 Aug '12, 12am
RT @IEEE_TA: #IEEE #Aerospace The Truth About Terahertz - Anyone hoping to exploit this promising region of the electromagnetic s... [link]
@IEEE_TA » 18 Aug '12, 12am
#IEEE #Aerospace The Truth About Terahertz - Anyone hoping to exploit this promising region of the electromagnetic s... [link]
@HackerYolk » 17 Aug '12, 9pm
The Truth About Terahertz - [link] /HN
@scimichael » 17 Aug '12, 8pm
[link] The truth about Terahertz electromagnetic spectrum applications. Obstacles in physics are still present.
@Theophany1 » 17 Aug '12, 6pm
The Truth About Terahertz [link] #atmospheric
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@IEEEGreen » 17 Aug '12, 6pm
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@ogduartev » 17 Aug '12, 6pm
RT @IEEESpectrum: The Truth About Terahertz: Anyone hoping to exploit this promising region of the electromagnetic spectrum must c... [link]
@anhn_cs » 17 Aug '12, 6pm
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@IEEESpectrum » 17 Aug '12, 6pm
The Truth About Terahertz: Anyone hoping to exploit this promising region of the electromagnetic spectrum must c... [link]
@NeoTechScience » 18 Aug '12, 6am
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@GlobalFuturist1 » 18 Aug '12, 6am
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@freedomia » 18 Aug '12, 2am
The Truth About Terahertz [link]
@cinnamon_carter » 18 Aug '12, 1am
The Truth About Terahertz [link]
@microxius » 17 Aug '12, 9pm
The Truth About Terahertz [link]
@ieeespain » 17 Aug '12, 8pm
RT @IEEESpectrum: The Truth About Terahertz: Anyone hoping to exploit this promising region of the electromagnetic spectrum must c... [link]
@CientificaLtd » 17 Aug '12, 7pm
The Truth About Terahertz [link]
@nsashi » 17 Aug '12, 7pm
The Truth About Terahertz: Anyone hoping to exploit this promising region of the electromagnetic spectrum must c... [link]
@adriancheok » 17 Aug '12, 6pm
RT @IEEESpectrum: The Truth About Terahertz: Anyone hoping to exploit this promising region of the electromagnetic spectrum must c... [link]
@nick_amell » 17 Aug '12, 6pm
RT @IEEESpectrum: The Truth About Terahertz: Anyone hoping to exploit this promising region of the electromagnetic spectrum must c... [link]
@forteksmkn1cmi » 17 Aug '12, 6pm
RT @IEEESpectrum: The Truth About Terahertz: Anyone hoping to exploit this promising region of the electromagnetic spectrum must c... [link]
@HowonKim2 » 17 Aug '12, 6pm
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@TechClicker » 17 Aug '12, 6pm
The Truth About Terahertz [link]
@USNavyIPs » 17 Aug '12, 6pm
The Truth About Terahertz: Anyone hoping to exploit this promising region of the electromagnetic spectrum must c... [link]
@electrosoftinc » 17 Aug '12, 6pm
The Truth About Terahertz [link]
@wkenneth » 17 Aug '12, 6pm
The Truth About Terahertz: Anyone hoping to exploit this promising region of the electromagnetic spectrum must c... [link]