Skip to main content

Home/ Advanced Concepts Team/ Group items tagged cascade

Rss Feed Group items tagged

Filter: All | Bookmarks | Topics Simple Middle
LeopoldS

High power terahertz quantum cascade lasers with symmetric wafer bonded active regions - 2 views

scitation.aip.org/...1.4826943.pdf

PHY laser terahertz quantum cascade

shared by LeopoldS on 03 Nov 13 - No Cached
  • LeopoldS on 03 Nov 13
     
    this gets into into interesting power ranges
jcunha

Interference of thermal waves - Can heat be controlled as waves? - 1 views

phys.org/...can-heat-be-controlled-as.html

technology PHY solid state thermal management science

shared by jcunha on 26 Jun 15 - No Cached
  • jcunha on 26 Jun 15
     
    Imagine a material that only admits thermal conduction for certain temperatures. Martin Maldovan from Georgia Tech holds a tiny thermoelectric device that turns cold on one side when current is applied. Recent research has focused on the possibility of using interference effects in phonon waves to control heat transport in materials. These are exciting news (see Nature Materials paper here http://www.nature.com/nmat/journal/v14/n7/full/nmat4308.html). Heterostructure research lead to outstanding new possibilities when applied to electronic transport (e.g. in quantum well and quantum dots) and to photonics (e.g. Quantum Cascade Laser tunnable lasers). Apparently the time has come to see selective thermal control in this way! Truly exciting!!
jcunha

Portable ultra-broadband lasers could be key to next-generation sensors - 0 views

phys.org/...asers-key-next-generation.html

technology lasers science sensing

shared by jcunha on 11 Aug 15 - No Cached
  • jcunha on 11 Aug 15
     
    Quantum Cascade Lasers are rising in the mid-infrared region, the so-called fingerprint zone of the electromagnetic spectrum for a whole bunch of chemical species that we are most of times interested in sensing. One more sign of the underlying importance of this technology comes just by seeing NSF, USHS, Naval Air Command and NASA as the main monetary contributors to this research.
Juxi Leitner

Networked Networks Are Prone to Epic Failure | Wired Science | Wired.com - 1 views

www.wired.com/...networked-networks

tech networks failure

shared by Juxi Leitner on 27 Apr 10 - Cached
  • The interconnections fueled a cascading effect, with the failures coursing back and forth. A damaged node in the first network would pull down nodes in the second, which crashed nodes in the first, which brought down more in the second, and so on. And when they looked at data from a 2003 Italian power blackout, in which the electrical grid was linked to the computer network that controlled it, the patterns matched their models’ math.
  • Juxi Leitner on 27 Apr 10
     
    that would be an interesting "Systems of Systems" study for once ...
Luís F. Simões

Stepping Away From the Trees For a Look at the Forest | Science/AAAS - 1 views

www.sciencemag.org/...1612.full

science technology cosmology astronomy exoplanets mars metamaterials climate_change BIO dna microbes cell

shared by Luís F. Simões on 22 Dec 10 - No Cached
  • An ingenious new tool triggers a cascade of new insights. In this special section, Science's news reporters and editors mark the end of the current decade by stepping back from weekly reporting to take a broader look at 10 insights that have changed science since the dawn of the new millennium.
  • Luís F. Simões on 22 Dec 10
     
    For a direct link to the 10 articles, showing their abstracts, go here.
1 - 5 of 5
Showing 20▼ items per page