Efficiently solving Rubik Cubes of any size
Updated: 2011-06-30 18:34:55
skip to main skip to sidebar Pages Home Timeslide View Flipcard June 30, 2011 Efficiently solving Rubik Cubes of any size Erik Demaine , an associate professor of computer science and engineering at MIT his father , Martin , Demaine a visiting scientist at MIT’s Computer Science and Artificial Intelligence Laboratory graduate student Sarah Eisenstat Anna Lubiw , who was Demaine’s PhD thesis adviser at the University of Waterloo and Tufts graduate student Andrew Winslow showed that the maximum number of moves required to solve a Rubik’s cube with N squares per row is proportional to N2 log N . That that’s the answer , and not N2, is a surprising thing , 8221 Demaine . says The standard way to solve a Rubik’s cube , Demaine explains , is to find a square that’s out of position and move it
skip to main skip to sidebar Pages Home Timeslide View Flipcard June 30, 2011 Meeting all of the earth's energy needs with tethered platforms A tethered platform hovering at an altitude of 20 kilometers would operate in the stratosphere , above most clouds and weather . At that altitude , a platform covered with photovoltaic cells would be able to collect considerably more sunlight than a ground-based solar collector . A company called stratosolar has developed a proposal to use either concentrated solar collectors or straight photovoltaic cells to generate electricity . Such schemes could potentially bring the cost of solar power down to 1 cent per kilowatt-hour . In an interview with Sander Olson , StratoSolar President Edmund Kelly describes what will be needed to make this concept a .
Filed under: Energy News
Filed under: Energy News
Filed under: Energy News
Filed under: Energy News
Filed under: Energy News
Filed under: Energy News
Filed under: Energy News
Home Introduction Graphene can make the thinnest THz-spectrum invisibility cloak Tweet Graphene applications Technical Research According to researchers from the University of Texas at Austin , a single layer of graphene may be used to create a thin metamaterial cover to suppress the scattering from a passive object . Graphene's unique features of ultra-high mobility and largely tunable Fermi level may naturally provide the required reactive properties in a single atomic layer . Graphene's effective surface impedance can be tuned in real time which makes dynamically tunable and switchable cloaking operation . possible A graphene invisibility cloak will be the thinnest possible a 2D sheet of atoms . It will operate in the THz . spectrum via NanoWerk Jun 30, 2011 Login register to post
Development of Porous Aluminum with Excellent Electrical Conductivity and Corrosion Resistance for use in Lithium-ion Batteries
Release of Three New Sample Kits of Ceramic PTC Thermistors
“CIGS” stands for the copper, indium, gallium and selenium elements comprising chalcopyrite, one of the most promising compounds for advanced solar panels. You’ll like them because engineers at Oregon State University have discovered the initial way to create successful “CIGS” solar devices with inkjet printing. The familiar inkjet printer is a low-cost technology that with [...]
Filed under: Energy News
Filed under: Energy News
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, Published by MIT English en Español auf Deutsch in Italiano ä¸æ in India Subscribe Login Search Home Computing Web Communications Energy Materials Biomedicine Business Magazine Blogs Video Business Breaches and Security , By the Numbers A look at how companies try and fail to defend themselves against data . theft Thursday , June 30, 2011 By Brian Bergstein Audio How is companies' data being stolen Attacks often employ multiple methods but remotely hacking a computer isn't always one of them . Sometimes employees are involved , and some attackers physically break in . The numbers in the chart below total more than 100 percent because more than one method can be used in an . attack Source : Verizon's 2011 Data Breach Investigations Report , which analyzed 761 breaches Given all the
Announcing the first member of the lineup for Technology Review's science fiction anthology.
The CTO of Suntech Power describes an innovative way to make the active materials for generating solar power.
"After industrial, service and social robots, Lovotics introduces a new generation of robots, with the ability to love and be loved by humans"
skip to main skip to sidebar Pages Home Timeslide View Flipcard June 29, 2011 Current and Future Superconducting Wire Markets to 2017 Development of 2G HTS Wire for Demanding Electric Power Applications 30 pages , by Superpower Inc Superpower Inc is improving the cost performance of its superconducting wire and is expecting major market gains over the next few . years If you liked this article , please give it a quick review on ycombinator or StumbleUpon Thanks Posted by bw at 6 29 2011 Labels : commericialization economic impact Economics energy future smart grid superconductors Current and Future Superconducting Wire Markets to 2017 Development of 2G HTS Wire for Demanding Electric Power Applications 30 pages , by Superpower Inc Superpower Inc is improving the cost performance of its
skip to main skip to sidebar Pages Home Timeslide View Flipcard June 29, 2011 2G HTS Wire for High Magnetic Field Applications 2G HTS Wire for High Magnetic Field Applications 37 pages , May 27, 2011 10-fold improvement by combination of higher self-field critical current and improved retention of in-field performance through technical . innovations Even at 4.2 K , 15 T , 2G HTS wire is comparable now with Nb3 Sn wire . Opportunity to improve to be 10X better than Nb3 Sn If you liked this article , please give it a quick review on ycombinator or StumbleUpon Thanks Posted by bw at 6 29 2011 Labels : future magnets physics superconductors 2G HTS Wire for High Magnetic Field Applications 2G HTS Wire for High Magnetic Field Applications 37 pages , May 27, 2011 10-fold improvement by
skip to main skip to sidebar Pages Home Timeslide View Flipcard June 29, 2011 Laser enabled megawatt class fusion propulsion IEEE Spectrum John J . Chapman , a NASA engineer , is proposing nuclear fusion propulsion for space satellites and space . probes He made a presentation at the IEEE Symposium on Fusion Engineering in . Chicago In Chapman’s aneutronic fusion reactor scheme , a commercially available benchtop laser starts the reaction . A beam with energy on the order of 2 x 10^18 watts per square centimeter , pulse frequencies up to 75 megahertz , and wavelengths between 1 and 10 micrometers is aimed at a two-layer , 20-centimeter-diameter . target IO4A-6 Advanced Fusion Reactors for Space Propulsion and Power Systems J . J . Chapman , Engineering Division , NASA , Hampton , VA ,
Filed under: Energy News
Filed under: Energy News
Filed under: Energy News
, skip to main skip to sidebar Pages Home Timeslide View Flipcard June 29, 2011 Current Status , Technical Feasibility and Economics of Small Nuclear Reactors Current Status , Technical Feasibility and Economics of Small Nuclear Reactors OECD , June 2011, 177 pages Small and modular reactors should be competitive with non-nuclear technologies for generating electricity in cases where large nuclear power plants cannot compete for whatever . reason If you liked this article , please give it a quick review on ycombinator or StumbleUpon Thanks Posted by bw at 6 29 2011 Labels : china Economics energy future nuclear world Current Status , Technical Feasibility and Economics of Small Nuclear Reactors Current Status , Technical Feasibility and Economics of Small Nuclear Reactors OECD , June 2011,
skip to main skip to sidebar Pages Home Timeslide View Flipcard June 29, 2011 Google Plus is the latest attempt by Google at Social Networking Google Plus is currently only usable by selected users on a field trial . basis During this invite-only stage , Google+ has four components : Circles , Hangouts , Mobile and . Sparks This is different from the 1 button that was introduced in March , 2011. Vic Gundotra , Google senior vice president of Engineering , introduced Google Plus Circles : share what matters , with the people who matter most Not all relationships are created equal . So in life we share one thing with college buddies , another with parents , and almost nothing with our boss . Google is trying to provide more privacy . control Hangouts- multi-user video chat system Mobile-
skip to main skip to sidebar Pages Home Timeslide View Flipcard June 29, 2011 New world record for magnetic fields with 91.4 teslas The capacitor bank of the Dresden High Magnetic Field . Laboratory The Helmholtz-Zentrum Dresden-Rossendorf set a new world record for magnetic fields with 91.4 . teslas To reach this record , Sergei Zherlitsyn and his colleagues at the High Magnetic Field Laboratory Dresden HLD developed a coil weighing about 200 kilograms in which electric current create the giant magnetic field for a period of a few milliseconds . The coil survived the experiment . unscathed Magnet coil The more powerful a magnetic field is , the more precisely the scientists can examine those substances which are used for innovative electronic components or for so-called superconductors
Development of Li-ion Battery Monitoring Chip-Set offering Highly accurate and Cost Effective Battery Protection
Development of Halogen-Free IC Substrate Materials to Reduce Warpage of Thin IC substrate in CSP and PoP
This time the team at Helmholtz-Zentrum Dresden-Rossendorf set a new world record for magnetic fields with 91.4 teslas. Sergei Zherlitsyn and his colleagues at the High Magnetic Field Laboratory Dresden (HLD) developed and used an electromagnetic coil weighing about 200 kilograms in which electric current created the giant magnetic field – for a period of [...]
skip to main skip to sidebar Pages Home Timeslide View Flipcard June 28, 2011 China High Speed rail will have complete run north south and significant east west segments by end of 2012 Dark red lines show the high speed rail that should be done at the end of 2012 China will be starting up the Beijing to Shanghai high speed rail line on . Thursday There is 17,000 km 11,000 mi of high-speed lines are now under construction in China . The entire HSR network will reach 13,073 km 8,123 mi by the end of 2011 and 25,000 km 16,000 mi by the end of 2015. There is 8300 km of high speed rail now and there will be 9600 km of high speed rail on . Thursday Beijing-Shanghai PDL Jinghu Passenger Designated Line Main north-south high speed railway of eastern China , connecting Beijing , Jinan , Tai'an ,
skip to main skip to sidebar Pages Home Timeslide View Flipcard June 28, 2011 Inkjet printing could change the face of solar energy industry Solar cell This scanning electron microscope , cross-sectional image shows the various compounds of a new chalcopyrite solar cell only a few microns thick , which can be created much less expensively with inkjet printing . Image courtesy of Oregon State University Engineers at Oregon State University have discovered a way for the first time to create successful CIGS” solar devices with inkjet , printing in work that reduces raw material waste by 90 percent and will significantly lower the cost of producing solar energy cells with some very promising . compounds High performing , rapidly produced , ultra-low cost , thin film solar electronics should be
skip to main skip to sidebar Pages Home Timeslide View Flipcard June 28, 2011 Brillouin Energy energy pulse process and respectable advisors New Energy and Fuel has some additional information about Brillouin Energy . Corp I covered Brillouin Energy a few days ago Brillouin Energy is in Berkeley California has another Low Energy Nuclear Reaction LENR method in the development and proving stage . The new method comes at fusion from a different path than the Rossi . E-Cat Brillouin technique uses electromagnetic pulses on hydrogen or H1. The pulses push some of the hydrogen into dihydrogen or H2 and on to H3 and H4. Finally some hydrogen molecules reach the stage of helium . The method generates heat more heat energy than electrical energy used to run the . pulse Using a catalyst the method
skip to main skip to sidebar Pages Home Timeslide View Flipcard June 28, 2011 Two- or three-tier graphene films can be produced at commercial scale and create band gap for electronic devices When compounds of bromine or chlorine represented in blue are introduced into a block of graphite shown in green the atoms find their way into the structure in between every third sheet , thus increasing the spacing between those sheets and making it easier to split them apart . Image : Chih-Jen Shih Christine Daniloff A team of MIT scientists has found a way to produce graphene in significant quantities in a two- or three-layer form . When the layers are arranged just , right these structures give graphene the much-desired band gap an energy range that falls between the bands , or energy levels ,
Published by MIT English en Español auf Deutsch in Italiano ä¸æ in India Subscribe Login Search Home Computing Web Communications Energy Materials Biomedicine Business Magazine Blogs Video App Provides Extra Eyes on the Road iOnRoad warns drivers of an impending collision but it can be a distraction . itself Kristina Grifantini 06 28 2011 A few high-end cars already come with technology that will issue a warning or even brake automatically if the dashboard computer thinks a crash is imminent . Now , for those of us who can't afford this luxury extra , there's a smart-phone app that aims to do something . similar iOnRoad for Android detect and tracks cars on the road ahead using a phone's camera and machine vision software . It also draws on a phone's GPS , accelerometer , and
Release of Compact Surface-Mounted Rotary Position Sensors for Automobile and Consumer Electronic Applications
Release of Speech Synthesis LSIs with Built-in Speaker Amplifier for Home Security and Home Electronics Applications
Currently solar panels come in two main forms, photovoltaic panels to harvest visible light for electricity production and thermal panels to harvest the infrared spectrum for heat. In a paper published in Nature Photonics, University of Toronto Engineering (UTE) researchers report a new solar cell that may pave the way to inexpensive coatings that convert [...]
skip to main skip to sidebar Pages Home Timeslide View Flipcard June 27, 2011 Moon Express talk by Barney Pell Moon Express , Inc . MoonEx is targeting mining the . moon Major Moon Markets Mining for Space and Terrestrial Markets Generating space-based solar power space-based manufacturing , research and development space tourism and entertainment Mining the moon water . at least 1 billion tons in the poles precious metals platinum , other platinum grade metals Lithium , gallium Helium-3 Silicon 28 400 higher heat dissipation , although silicon 28 is 92 of the earth silicon , so maybe the wrong isotope number Industrial metals aluminum cheaper than bringing from the earth for space based industry Four disruptive technologies lead to successful moon mining 1. Commercial launchers 2.
: skip to main skip to sidebar Pages Home Timeslide View Flipcard June 27, 2011 Foresight 2011 Mesoporous Sensors : From Explosives to Cancer Mesoporous Sensors : From Explosives to Cancer Robert Meagley , PhD , CEO CTO of ONE-Nanotechnologies LLC One-nanotechnologies website We create faster , more accurate , and more cost-effective tools for biomarker analysis , making more efficient and precise human health diagnostics possible . Our patent-pending technology measures proteins and other disease and cancer biomarkers through the use of precisely printed photonic . nanodevices Early disease detection uses biochemical processes to find biomarkers . These biochemicals add complexity , variability and error to the results . Specificity and simplicity are better Our technology provides both
skip to main skip to sidebar Pages Home Timeslide View Flipcard June 27, 2011 Carnival of Space 203 Carnival of space 203 is up at weareallintheGutter.com Discovery News In 2010, scientists confirmed the enigmatic Saturnian moon Enceladus possesses a sub-surface ocean of liquid water . This groundbreaking discovery was made by NASA's Cassini spacecraft currently in orbit around Saturn . Today , mission scientists have further analyzed Cassini data from various Enceladus flybys to find that it's not only a liquid water ocean it could be salty . too Weirdwarp also had coverage of the Salt ocean on Enceladus . The picture of the tiger stripes on Enceledus is from . Weirdwarp This site provided two articles on the Hypermach Sonicstar Mach 3.5 supersonic business jet The second article covered
skip to main skip to sidebar Pages Home Timeslide View Flipcard June 27, 2011 Helion Energy and General Fusion in the mainstream media Popular Mechanics featured Helion Energy Field reversed configuration fusion with colliding plasmoids General Fusion gets covered by CNN General fusion is working on a precision controlled piston that hammers giant shock waves into a magnetized sphere slamming atoms together hard enough to fuse and create energy . The idea triggered investments in Laberge's young company , first from family and friends , then from venture capitalists including Amazon.com founder Jeff Bezos . So far , funding has totaled 32.5 million . If you liked this article , please give it a quick review on ycombinator or StumbleUpon Thanks Posted by bw at 6 27 2011 Labels : fusion
Brillouin Energy Corp In Berkeley California has another Low Energy Nuclear Reaction (LENR) method in the development and proving stage. The new method comes at fusion from a different path than the Rossi E-Cat. The reports have the Brillouin at nearly 2 times the energy coming out from that going in. If this is real [...]
Development of Compact Resistive Rotary Sensor for Robotic and other Commercial applications
Development of New lineup of SoCs for Set-Top Box Market, Supporting 3D Broadcasts and Internet-Based Content
Development of New Sensor Node Technology capable of Battery-less Data Transmission to Mobile Devices
i-MiEV and MINICAB-MiEV will be Powered by Toshiba’s SCiB™ Rechargeable Battery
University of Minnesota (UM) engineering researchers in the College of Science and Engineering have recently discovered a new alloy material that converts heat directly into electricity. Getting from heat to electric power has a loss of the energy i.e. steam to turbine to generator with each step having energy losses of significance that the UM [...]
Home Introduction Lasers could produce band gaps in graphene Technical Research Foa Torres , a scientist from the National University of Córdoba in Argentina , says that Graphene's Achilles heel is the fact that it does not have a band gap . This means taht Graphene cannot be turned-off' , and so you can't use it for active electronic devices such as switches and . transistors Foa Torres predicts that shining a mid-infrared laser on graphene can produce band gaps in its electronic structure , and this band gap could be tuned by controlling the laser polarization . The next crucial step is experimental . verification via Physorg 06 21 2011 Login register to post comments Tweet Similar entries Graphene illuminated by laser image Researchers use water to open and tune Graphene's band gap
Home Introduction NIU scientists use dry ice to simply produce graphene Graphene production Technical Research Researchers from Northern Illinois University NIU discovered a simple method for producing high yields of graphene by burning pure magnesium metal in dry ice . It is widely known that burning magnesium metal in carbon dioxide produces carbon . But using it to create graphene by placing it on dry ice is new . This method produces few-layer graphene and is simple , green and . cost-effective via NIU 06 21 2011 Login register to post comments Tweet Similar entries Amartya Chakrabarti NIU and graphene made with the dry-ice method photo Scientists created completely flat , two-layer ice using Graphene Researchers develop a cheaper , scalable method to make graphene Graphene nanoribbons
Many expect that LED technology is the electric light source for the future. It would be a very good bet. LEDs offer very low power consumption and long life. The current downside is the initial investment and the replacement cost projection. The economics work, but it takes years. University of Miami professor at the College [...]
There’s an anchor in the U.S. economy. The chain needs cut setting innovation and creativity free. While the topic today isn’t energy and fuel, getting minds and capital focused depends in a major way in shifting attention and funds away from waste to productive research and development. Dave Chase writes in Linkedin’s Tech Crunch about [...]
Home Introduction UCLA researchers developed a scalable approach to fabricate high-speed over 50Ghz graphene transistors Graphene applications Technical Research A research team from UCLA announce they have developed a scalable approach to fabricate high-speed graphene transistors . Back in September 2010, this team developed 300Ghz graphene transistors , making them using a nanowire as the self-aligned gate The new approach uses a dielectrophoresis assembly approach to precisely place nanowire gate arrays on large-area chemical vapor deposition–growth graphene as opposed to mechanically peeled graphene flakes to enable the rational fabrication of high-speed transistor arrays . This was made on a glass substrate . The new transistors have cut-off frequencies of over 50Ghz typical graphene
The Department of Energy’s Oak Ridge National Laboratory (ORNL) with a “first of its kind” combination of experiment and simulation is providing a closeup look at the lignin molecule that bedevils making next-generation biofuels. Lignin is a major component of plant cell walls. During processing it aggregates or clumps up, which cause problems during the [...]
Home Introduction Researchers create a new conductive composite from graphene foam' Graphene applications Technical Research Researchers from the Chinese Academy of Sciences' Institute of Metal Research developed a way to turn graphene into porous three-dimensional foam' using chemical vapor deposition CVD This foam' has extremely high conductivity and when permeated with a siloxane-based polymer it results in a composite that can be twisted , stretched and bent without harming its electrical or mechanical . properties This foam has a unique network structure , large surface area , very low density and outstanding electrical and mechanical properties . This can find uses in many fields- flexible electronics , fuel cell electrodes , biomedical supports and . more via NanoWerk 06 13 2011
Home Introduction Researchers created graphene quantum dots from C60 fullerene Graphene applications Technical Research Researchers from the National University of Singapore NUS and A STAR developed a new method to create Quantum Dots from Graphene . The idea is to start with a C60 fullerene a soccer ball like spherical carbon structure that costs of 60 carbon atoms and open' them up or decompose them at high temperature using ruthenium as a . catalyst The researcher performed the decomposition using a sparser coverage of fullerenes on the catalytic ruthenium surface than previously tried which gave the fullerenes room to prevent carbon atoms from diffusing from one fullerene to the . next By playing with the heating temperature , the researchers were able to change the quantum dots shape
Home Introduction IBM developed a 10Ghz graphene IC Graphene applications Technical Research IBM developed a 10 Ghz integrated circuit IC made from Graphene . This research proved that graphene can be fabricated on a wafer similar to silicon chips and graphene transistors can be bonded with components from other . materials According to IBM , there are big advantages in using graphene in analog components , and that's where IBM is focusing its work . IBM already developed a 100Ghz graphene transistor and plans to develop a 1Thz one . In a different research , IBM developed a graphene transistor with a record cut-off frequency of 155 Ghz and the shortest gate length ever via The Wall Street Journal 06 10 2011 Login register to post comments Tweet Similar entries IBM researchers develop a