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susanbelly

How Fiber Optics Work？ - 2 views

To understand how fiber optic cables work, imagine an infinitely long drinking straw or flexible plastic tube. For example, imagine a pipeline that is several kilometers long. Now, suppose the inne...

Science research TECHNOLOGY

started by susanbelly on 10 Mar 22 no follow-up yet
Walid Damouny

Making an optical switch by drawing lines in gold - 0 views

arstechnica.com/...golden-optical-switching.ars

Ars Technica optics Optical Computing switching optical switching plasmonic surfaces

shared by Walid Damouny on 18 Feb 10 - Cached
  • Walid Damouny on 18 Feb 10
     
    "Basically, any computing device (or switch, or router) that is based on light requires a nonlinear interaction between different light beams, but light doesn't like to do nonlinear stuff. With current technology, you can get efficient nonlinear optical interactions, but the hardware is kind of bulky or very delicate. Not the sort of thing you want to put in a billion devices. What my friends in Barcelona have demonstrated is that it's possible to create a relatively efficient optical nonlinear interaction in a nano-structured metallic surface. "
Janos Haits

Max Planck Institute of Quantum Optics - 0 views

www.mpq.mpg.de/...index.html

quantum optics institute science research technology education

shared by Janos Haits on 16 Apr 12 - No Cached
  • Janos Haits on 16 Apr 12
     
    Max Planck Institute of Quantum Optics
thinkahol *

Breakthrough chip technology lights path to exascale computing: Optical signals connect... - 0 views

www.sciencedaily.com/...101201212401.htm

Breakthrough chip technology lights path to exascale computing: Optical signals connect chips together faster and with lower power

shared by thinkahol * on 04 Dec 10 - No Cached
  • thinkahol * on 04 Dec 10
     
    ScienceDaily (Dec. 3, 2010) - IBM scientists have unveiled a new chip technology that integrates electrical and optical devices on the same piece of silicon, enabling computer chips to communicate using pulses of light (instead of electrical signals), resulting in smaller, faster and more power-efficient chips than is possible with conventional technologies.
thinkahol *

Toward optical computing in handheld electronics: Graphene optical modulators could lea... - 1 views

www.sciencedaily.com/...110508134927.htm

Toward optical computing in handheld electronics: Graphene modulators could lead to ultrafast communications

shared by thinkahol * on 09 May 11 - No Cached
  • thinkahol * on 09 May 11
     
    Graphene-based modulators could soon allow consumers to stream full-length, high-definition, 3-D movies onto a smartphone in a matter of seconds, the researchers said.
Erich Feldmeier

Google+, Great inventions and innovations overlapping edges of 2 or more disciplines - 0 views

plus.google.com/stream

science blog research interdisciplinarity innovation querdenker lateralthinking excellent

shared by Erich Feldmeier on 06 Jul 12 - No Cached
  • Erich Feldmeier on 06 Jul 12
     
    "Great inventions and innovations were nearly always @ the overlapping edges of 2 or more disciplines, e.g. optics / microscope: http://ed.iiQii.de/gallery/VictimsOfGroupThink/PersistenceOfMemory_wikipedia_org But think to IT 1) human genome project / Craig Venter and to socialmedia 2) http://coturnix.org/ 3) http://scientopia.org/blogs/scicurious/ 4) http://michaelnielsen.org/blog/reinventing-discovery/ 5 ) „Science is an assault on ignorance, Its legacies are concepts,technologies and databases. As with many walks in life, the most glamorous legacies tend to get the most attention and the least are neglected" http://socrates.berkeley.edu/~scotch/maureretal_nature.pdf"
Charles Daney

Farthest Galaxy Cluster Ever Detected | Wired.com - 0 views

www.wired.com/...t-galaxy-cluster-ever-detected

galaxies astrophysics

shared by Charles Daney on 09 Nov 09 - Cached
  • Charles Daney on 09 Nov 09
     
    Captured by NASA's Chandra X-ray Observatory and combined with data from infrared and optical telescopes, this image shows the farthest galaxy cluster ever detected. Designated JKCS041, the cluster is located 10.2 billion light-years from Earth, beating the previous distance record by a billion light-years. Astronomers think JKCS041 formed just about as early as was feasible.
thinkahol *

Quantum trickery could lead to stealth radar - tech - 31 March 2011 - New Scientist - 1 views

www.newscientist.com/...uld-lead-to-stealth-radar.html

Quantum trickery could lead to stealth radar - tech 31 March 2011 New Scientist

shared by thinkahol * on 06 Apr 11 - No Cached
  • thinkahol * on 06 Apr 11
     
    Traditional methods of transmitting data, such as fibre optics or laser-based radar, require roughly 100 photons to transmit a single bit of data. Now a team led by Saikat Guha at Raytheon BBN Technologies in Cambridge, Massachusetts, say they can transmit 10 bits on a single photon - a 1000-fold improvement.
thinkahol *

Quantum magic trick shows reality is what you make it - physics-math - 22 June 2011 - N... - 2 views

www.newscientist.com/...ality-is-what-you-make-it.html

Quantum magic trick shows reality is what you make it - physics-math 22 June 2011 New Scientist

shared by thinkahol * on 28 Jun 11 - No Cached
  • thinkahol * on 28 Jun 11
     
    In 1967, Simon Kochen and Ernst Specker proved mathematically that even for a single quantum object, where entanglement is not possible, the values that you obtain when you measure its properties depend on the context. So the value of property A, say, depends on whether you chose to measure it with property B, or with property C. In other words, there is no reality independent of the choice of measurement. It wasn't until 2008, however, that Alexander Klyachko of Bilkent University in Ankara, Turkey, and colleagues devised a feasible test for this prediction. They calculated that if you repeatedly measured five different pairs of properties of a quantum particle that was in a superposition of three states, the results would differ for the quantum system compared with a classical system with hidden variables. That's because quantum properties are not fixed, but vary depending on the choice of measurements, which skews the statistics. "This was a very clever idea," says Anton Zeilinger of the Institute for Quantum Optics, Quantum Nanophysics and Quantum Information in Vienna, Austria. "The question was how to realise this in an experiment." Now he, Radek Lapkiewicz and colleagues have realised the idea experimentally. They used photons, each in a superposition in which they simultaneously took three paths. Then they repeated a sequence of five pairs of measurements on various properties of the photons, such as their polarisations, tens of thousands of times. A beautiful experiment They found that the resulting statistics could only be explained if the combination of properties that was tested was affecting the value of the property being measured. "There is no sense in assuming that what we do not measure about a system has [an independent] reality," Zeilinger concludes.
thinkahol *

Light propagation controlled in photonic chips: Major breakthrough in telecommunication... - 2 views

www.sciencedaily.com/...110710132825.htm

Light propagation controlled in photonic chips: Major breakthrough telecommunications field

shared by thinkahol * on 12 Jul 11 - No Cached
  • thinkahol * on 12 Jul 11
     
    ScienceDaily (July 11, 2011) - Researchers at Columbia Engineering School have built optical nanostructures that enable them to engineer the index of refraction and fully control light dispersion.
thinkahol *

YouTube - Controlling the Brain with Light (Karl Deisseroth, Stanford University) - 0 views

www.youtube.com/watch

science technology neuroscience medicine psychiatry bioengineering brain chemical imbalance optical light bacteria depression Karl Deisseroth optogenetics Stanford

shared by thinkahol * on 21 Jun 10 - Cached
Beatriz Arias liked it
  • thinkahol * on 21 Jun 10
     
    Free Download - StanfordUniversity - January 22, 2009 - Karl Deisseroth is pioneering bold new treatments for depression and other psychiatric diseases. By sending pulses of light into the brain, Deisseroth can control neural activity with remarkable precision. In this short talk, Deisseroth gives an thoughtful and awe-inspiring overview of his Stanford University lab's groundbreaking research in "optogenetics".
Walid Damouny

What scientists know about jewel beetle shimmer - 0 views

www.physorg.com/news167585862.html

PhysOrg.com beetles insects pigment polymer colour light optics imaging

shared by Walid Damouny on 24 Jul 09 - Cached
  • Walid Damouny on 24 Jul 09
     
    "Jewel beetles" are widely known for their glossy external skeletons that appear to change colors as the angle of view changes. Now they may be known for something else--providing a blueprint for materials that reflect light rather than absorbing it to produce colors.
Skeptical Debunker

A mini-laboratory for all cases - Research News 03-2010-Topic 5 - Fraunhofer-Gesellschaft - 0 views

www.fraunhofer.de/...mini-laboratory.jsp

mini-laboratory diagnosis disease

shared by Skeptical Debunker on 02 Mar 10 - Cached
  •  »We’ll just have to wait for the results of the laboratory tests.« These words are familiar to many patients. It then usually takes several days for specimens to be sent to the laboratory and analyzed and for the doctor to receive the results. For many illnesses, however, a speedy diagnosis is crucial if the treatment is to be successful. In future, the patient might only have to sit in the waiting room for a few minutes until the results are ready. In a joint project, researchers from seven Fraunhofer institutes have developed a modular platform for in vitro diagnosis which enables various types of bioanalysis – of blood and saliva for example – to be conducted in the doctor’s surgery. »Thanks to its modular design our IVD platform is so flexible that it can be used for all possible bioanalytical tasks,« states Dr. Eva Ehrentreich-Förster from the Fraunhofer Institute for Biomedical Engineering (IBMT) in Potsdam-Golm.The core element of the mini-laboratory is a disposable cartridge made of plastic which can be fitted with various types of sensor. For an analysis the doctor fills the cartridge with reagents – binding agents which indicate the presence of certain substances such as antigens in the specimen material. Various tests or assays are available for different types of analysis. To perform an assay, the doctor only has to place the relevant substances in the cartridge and the test then takes place automatically. »We have optimized the assays so that up to 500 assay reactions can be conducted in parallel in a single analysis step,« explains Dr. Ehrentreich-Förster. Even in the case of complex analyses the doctor obtains a result within about 30 minutes. A new module on the reverse side of the cartridge also makes it possible to analyze the specimen material at DNA level.Once the cartridge has been prepared, the doctor places it in the measurement system. The results can be read out with either optical or electrochemical biosensors. The researchers have installed a readout window for both methods in the measurement system, which features a bypass through which the specimen is pumped.
  • Skeptical Debunker on 02 Mar 10
     
    Many illnesses can be reliably diagnosed through laboratory tests, but these in vitro analyses often use up valuable time. A system developed by Fraunhofer research scientists, which can carry out complex analyses on the spot, will soon be ready for the market.
futuristspeaker

10 Unanswerable Questions that Neither Science nor Religion can Answer - Futurist Speaker - 2 views

futuristspeaker.com/...cience-nor-religion-can-answer

questions that cannot be answered unanswerable questions my future self future of technology future of education future of business questions without answers impossible questions to answer

shared by futuristspeaker on 21 Nov 18 - No Cached
  • futuristspeaker on 21 Nov 18
     
    A few years ago I was taking a tour of a dome shaped house, and the architect explained to me that domes are an optical illusion. Whenever someone enters a room, their eyes inadvertently glance up at the corners of the room to give them the contextual dimensions of the space they're in.
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