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  • Living in the '90s? So are underwater wireless networks
    just south of Buffalo New York graduate students from UB proved that software defined acoustic modems could boost data transmission rates by 10 times what today s commercial underwater modems are capable of The potential applications for such technology includes Monitoring pollution Military and law enforcement work for example drug smugglers have deployed makeshift submarines to clandestinely ferry narcotics long distances underwater An improved more robust underwater sensor network could help spot these vessels The scuba industry diver to diver walkie talkies exist but their usefulness is limited by distance clarity and other issues The energy industry an improved network could make finding oil and natural gas easier Explore further New research suggests changes in underwater data communications More information ieeexplore ieee org xpl articleDetails jsp reload true arnumber 7321973 Provided by University at Buffalo 29 shares feedback to editors Tweet Favorites Email Print PDF Featured Last comments Popular Detection of gravitational waves would open new window on universe Feb 10 2016 58 Gravitational waves detected 100 years after Einstein s prediction Feb 11 2016 144 GPS tracking down to the centimeter Feb 11 2016 10 A metal that behaves like water Feb 11 2016 2 Physicists create first photonic Maxwell s demon 14 hours ago 3 more Phys org on facebook Relevant PhysicsForums posts Zeno s arrow paradox 1 hour ago Arrows vs plate armor 1 hour ago Wave impedance of free space 1 hour ago Work done on a stationary bycicle 1 hour ago Brainstorming Large scale piezoelectricity generation 3 hours ago free fall acceleration help 3 hours ago More from General Physics Related Stories New research suggests changes in underwater data communications October 14 2008 An NJIT professor who has discovered new communication channels in underwater environments and invented a technique to communicate data through these channels will be honored later this month by the New Jersey Inventors Underwater sensor successfully tested June 5 2013 As part of the Dutch STW SeaSTAR project researchers at the University of Twente have conducted tests using underwater communication and location finding at the Rutbeek water recreation park near Enschede The aim of the Taking the Internet underwater October 14 2013 Phys org Wireless networks span the globe But like a frightened toddler they don t go underwater Making wireless 10 times faster May 6 2014 It is rush hour and every motorist on the highway is driving in the right lane The center and left lanes are empty Listening under the ice April 29 2015 The watery world under winter s ice is a mystery It s also a world full of sound Now as the days lengthen and the ice is retreating researchers at Michigan Technological University are wrapping up their first winter season Researchers advance software defined radio technology December 29 2015 The field of software defined radio SDR technology a wireless communications system implemented by means of software on a computer to replicate the work of traditional hardware has potential in future cognitive radio Recommended for you

    Original URL path: http://phys.org/news/2016-01-90s-underwater-wireless-networks.html (2016-02-13)
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  • De-icing concrete could improve roadway safety, guard against corporate espionage
    that doesn t even require electric current Catching the next wave By replacing the limestone and sand typically used in concrete with a mineral called magnetite Tuan has shown that the mixture can also shield against electromagnetic waves The electromagnetic spectrum includes the radiofrequency waves transmitted and received by cellphones which Tuan said could make the concrete mixture useful to those concerned about becoming targets of industrial espionage Using the magnetite embedded concrete Tuan and his colleagues have built a small structure in their laboratory that demonstrates the material s shielding capabilities We invite parties that are interested in the technology to go in there and try to use their cellphones said Tuan who has patented his design through NUtech Ventures And they always receive a no service message While Tuan s collaborations have him dreaming big about the future of conductive concrete he s currently enjoying its benefits much closer to home I have a patio in my backyard that is made of conductive concrete he said with a laugh So I m practicing what I preach Tuan developed the concrete with the assistance of Lim Nguyen associate professor of electrical and computer engineering Bing Chen professor of electrical and computer engineering and Sherif Yehia a professor at the American University of Sharjah who earned his doctorate in civil engineering at UNL The FAA is currently funding the team s research which also received past support from the Nebraska Department of Roads Explore further Researchers develop solar powered runway anti icing system Provided by University of Nebraska Lincoln 1915 shares feedback to editors Tweet Favorites Email Print PDF Featured Last comments Popular Detection of gravitational waves would open new window on universe Feb 10 2016 58 Gravitational waves detected 100 years after Einstein s prediction Feb 11 2016 144 GPS tracking down to the centimeter Feb 11 2016 10 A metal that behaves like water Feb 11 2016 2 Physicists create first photonic Maxwell s demon 14 hours ago 3 more Phys org on facebook Relevant PhysicsForums posts Zeno s arrow paradox 1 hour ago Arrows vs plate armor 1 hour ago Wave impedance of free space 1 hour ago Work done on a stationary bycicle 1 hour ago Brainstorming Large scale piezoelectricity generation 3 hours ago free fall acceleration help 3 hours ago More from General Physics Related Stories Researchers develop solar powered runway anti icing system November 17 2011 PhysOrg com Engineering researchers at the University of Arkansas are developing an anti icing system that could make airport runways safer and less expensive to maintain during winter months The approach uses a conventional The flip side of salting winter roads November 5 2012 Swedish scientists have studied models to help road and bridge maintenance engineers work out how much damage salting the roads in winter might cause to steel reinforced concrete structures Researchers studying how to make longer more durable bridge girders September 16 2015 Engineering researchers at The University of Alabama are testing massive concrete girders

    Original URL path: http://phys.org/news/2016-01-de-icing-concrete-roadway-safety-corporate.html (2016-02-13)
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  • 'Multifab' 3D-prints a record 10 materials at once, no assembly required (w/ Video)
    this In the future they could walk into a FedEx with a design and print out batches of their finished product at a reasonable price says Ramos For me a practical use like that would be the ultimate dream Explore further BotObjects announces first full color 3D printer ProDesk3D Provided by Massachusetts Institute of Technology 1901 shares feedback to editors Tweet Favorites Email Print PDF Featured Last comments Popular Detection of gravitational waves would open new window on universe Feb 10 2016 58 Gravitational waves detected 100 years after Einstein s prediction Feb 11 2016 144 GPS tracking down to the centimeter Feb 11 2016 10 A metal that behaves like water Feb 11 2016 2 Physicists create first photonic Maxwell s demon 14 hours ago 3 more Phys org on facebook Relevant PhysicsForums posts Zeno s arrow paradox 1 hour ago Arrows vs plate armor 1 hour ago Wave impedance of free space 1 hour ago Work done on a stationary bycicle 1 hour ago Brainstorming Large scale piezoelectricity generation 3 hours ago free fall acceleration help 3 hours ago More from General Physics Related Stories BotObjects announces first full color 3D printer ProDesk3D May 1 2013 Phys org Co founders of a company called botObjects have announced on their website the development of a full color 3D printer the first of its kind Until now most 3D printers have been either monochrome or were 3D printing goes solar October 13 2014 3D printing guru Joshua Pearce wants nothing more than to provide the means of production to everyone especially people in developing regions who must get by on very little But there has been a drawback 3 D printers poised to have major implications for food manufacturing July 13 2015 The use of 3D printers has the potential to revolutionize the way food is manufactured within the next 10 to 20 years impacting everything from how military personnel get food on the battlefield to how long it takes to get The future of 3D printing lies in space and with an extra dimension July 24 2015 The concept and use of 3D printing is now well established with a large selection of printers available today ranging from your low price small 3D units for home to the larger and more robust industrial printers Recommended for you Picasa being shuttered in shift to Google Photos February 12 2016 Google on Friday said it will be shuttering Picasa to shift its focus to the new Google Photos service launched less than a year ago Using stories to teach human values to artificial agents February 12 2016 The rapid pace of artificial intelligence AI has raised fears about whether robots could act unethically or soon choose to harm humans Some are calling for bans on robotics research others are calling for more research AT T testing superfast 5G mobile network February 12 2016 AT T announced plans Friday to begin testing a superfast fifth generation or 5G mobile network with speeds

    Original URL path: http://phys.org/news/2015-08-multifab-3d-prints-materials-required-video.html (2016-02-13)
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  • Change the shape, change the sound: Researchers develop algorithm to 3-D print vibrational sounds
    While previous algorithms attempted to optimize either amplitude loudness or frequency the zoolophone required optimizing both simultaneously to fully control its acoustic properties Creating realistic musical sounds required more work to add in overtones secondary frequencies higher than the main one that contribute to the timbre associated with notes played on a professionally produced instrument The video will load shortly Looking for the most optimal shape that produces the desired sound when struck proved to be the core computational difficulty the search space for optimizing both amplitude and frequency is immense To increase the chances of finding the most optimal shape Zheng and his colleagues developed a new fast stochastic optimization method which they called Latin Complement Sampling LCS They input shape and user specified frequency and amplitude spectra for instance users can specify which shapes produce which note and from that information optimized the shape of the objects through deformation and perforation to produce the wanted sounds LCS outperformed all other alternative optimizations and can be used in a variety of other problems Acoustic design of objects today remains slow and expensive Zheng notes We would like to explore computational design algorithms to improve the process for better controlling an object s acoustic properties whether to achieve desired sound spectra or to reduce undesired noise This project underscores our first step toward this exciting direction in helping us design objects in a new way Zheng whose previous work in computer graphics includes synthesizing realistic sounds that are automatically synchronized to simulated motions has already been contacted by researchers interested in applying his approach to micro electro mechanical systems MEMS in which vibrations filter RF signals Explore further Scientists make animated collisions sounds realistic More information Paper www cs columbia edu cxz publications metallophone pdf Provided by Columbia University School of Engineering and Applied Science 3065 shares feedback to editors Tweet Favorites Email Print PDF Featured Last comments Popular Detection of gravitational waves would open new window on universe Feb 10 2016 58 Gravitational waves detected 100 years after Einstein s prediction Feb 11 2016 144 GPS tracking down to the centimeter Feb 11 2016 10 A metal that behaves like water Feb 11 2016 2 Physicists create first photonic Maxwell s demon 14 hours ago 3 more Phys org on facebook Relevant PhysicsForums posts Zeno s arrow paradox 1 hour ago Arrows vs plate armor 1 hour ago Wave impedance of free space 1 hour ago Work done on a stationary bycicle 1 hour ago Brainstorming Large scale piezoelectricity generation 3 hours ago free fall acceleration help 3 hours ago More from General Physics Related Stories Scientists make animated collisions sounds realistic August 21 2012 Phys org Bang Clatter Tinkle Jingle When solid objects collide in the real world we hear a sharp impact sound sometimes followed by a ringing aftershock Creating sounds like that to accompany computer animation Process designs tops and yo yos with stable spins despite asymmetric shapes August 8 2014 Tops and yo yos are

    Original URL path: http://phys.org/news/2015-10-algorithm-d-vibrational.html (2016-02-13)
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  • Printing lightweight, flexible, and functional materials
    the field of additive manufacturing said Christopher Spadaccini Director of the Center for Engineered Materials Manufacturing and Optimization at Lawrence Livermore National Lab By allowing for the mixing of two highly viscous materials on the fly the promise of mixed material systems with disparate mechanical and functional properties becomes much more realistic Before this was really only a concept This work will be foundational for applications which required integrated electrical and structural materials Lewis lab also recently designed another printhead that can rapidly switch between multiple inks within a single nozzle eliminating the structural defects that often occur during the start and stop process of switching materials This printhead design eliminates the need to align multiple nozzles as well as start and stop ink flow on demand said James Hardin first author of a recently published paper in Advanced Materials This paper was co authored by Ober research fellow Alexander Valentine and Lewis Together these active mixing and switching printheads provide an important advance for multimaterial 3D printing said Lewis They allow one to programmably control both materials composition and structure at the microscale opening new avenues for creating materials by design Explore further Particle free silver ink prints small high performance electronics More information Active mixing of complex fluids at the microscale www pnas org cgi doi 10 1073 pnas 1509224112 Journal reference Proceedings of the National Academy of Sciences Advanced Materials Provided by Harvard University 1980 shares feedback to editors Tweet Favorites Email Print PDF Featured Last comments Popular Detection of gravitational waves would open new window on universe Feb 10 2016 58 Gravitational waves detected 100 years after Einstein s prediction Feb 11 2016 144 GPS tracking down to the centimeter Feb 11 2016 10 A metal that behaves like water Feb 11 2016 2 Physicists create first photonic Maxwell s demon 14 hours ago 3 more Phys org on facebook Relevant PhysicsForums posts Zeno s arrow paradox 1 hour ago Arrows vs plate armor 1 hour ago Wave impedance of free space 1 hour ago Work done on a stationary bycicle 1 hour ago Brainstorming Large scale piezoelectricity generation 3 hours ago free fall acceleration help 3 hours ago More from General Physics Related Stories Particle free silver ink prints small high performance electronics January 13 2012 University of Illinois materials scientists have developed a new reactive silver ink for printing high performance electronics on ubiquitous low cost materials such as flexible plastic paper or fabric substrates 3D printing tiny batteries June 18 2013 Phys org 3D printing can now be used to print lithium ion microbatteries the size of a grain of sand The printed microbatteries could supply electricity to tiny devices in fields from medicine to communications including An essential step toward printing living tissues February 19 2014 A new bioprinting method developed at the Wyss Institute for Biologically Inspired Engineering at Harvard University and the Harvard School of Engineering and Applied Sciences SEAS creates intricately patterned 3D tissue Printing with nanomaterials a cost

    Original URL path: http://phys.org/news/2015-09-lightweight-flexible-functional-materials.html (2016-02-13)
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  • Brains vs. blizzards: Harvard students take on snow removal
    hydrogel mat to keep doorways and steps ice free The class was one of the most practical junior bioengineering major Cassie Lowell has taken It s a unique class in the sense is that we re given a lot of freedom she said It was a really hands on real world experience The students and Mooney stress that all their inventions are prototypes and won t be deployed on campus this winter But some of the students plan to keep working on them with the goal of one day making them commercially available Fine said he d love to walk into a hardware store in the future and see the items for sale Just like someone has a leaf blower in their garage we d love to see someone have an icicle cutter in the garage one day he said Explore further Online Icicle Atlas offers jackpot of scientific data 329 shares feedback to editors 2016 The Associated Press All rights reserved Tweet Favorites Email Print PDF Featured Last comments Popular Detection of gravitational waves would open new window on universe Feb 10 2016 58 Gravitational waves detected 100 years after Einstein s prediction Feb 11 2016 144 GPS tracking down to the centimeter Feb 11 2016 10 A metal that behaves like water Feb 11 2016 2 Physicists create first photonic Maxwell s demon 14 hours ago 3 more Phys org on facebook Relevant PhysicsForums posts Zeno s arrow paradox 1 hour ago Arrows vs plate armor 1 hour ago Wave impedance of free space 1 hour ago Work done on a stationary bycicle 1 hour ago Brainstorming Large scale piezoelectricity generation 3 hours ago free fall acceleration help 3 hours ago More from General Physics Related Stories Online Icicle Atlas offers jackpot of scientific data March 4 2015 Anyone who might be dreading the end of winter or cannot wait until it arrives again can now enjoy the beauty and mystery of icicles all year long with the Icicle Atlas Winter runoff into streams on par with ocean salinity April 2 2015 Examining nearby creeks and outflows Cornell students have found that the amount of road salt in winter and spring runoff that flushes into streams is of near oceanic salinity levels according to a new unpublished report Report reveals inner worlds of snow and winter and their importance to humans and ecosystems January 14 2016 Snow that icon of winter blankets the land with a beautiful silence Love it or hate it we all depend on snow Our year round water supply largely comes from snowmelt Recommended for you Picasa being shuttered in shift to Google Photos February 12 2016 Google on Friday said it will be shuttering Picasa to shift its focus to the new Google Photos service launched less than a year ago Using stories to teach human values to artificial agents February 12 2016 The rapid pace of artificial intelligence AI has raised fears about whether robots could act unethically or soon choose to

    Original URL path: http://phys.org/news/2016-01-brains-blizzards-harvard-students.html (2016-02-13)
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  • 3D-printing microscopic fish: Team demonstrates novel method to build robots with complex shapes, functionalities
    the researchers could easily experiment with different designs for their microfish including shark and manta ray shapes With our 3D printing technology we are not limited to just fish shapes We can rapidly build microrobots inspired by other biological organisms such as birds said Zhu The key component of the μCOP technology is a digital micromirror array device DMD chip which contains approximately two million micromirrors Each micromirror is individually controlled to project UV light in the desired pattern in this case a fish shape onto a photosensitive material which solidifies upon exposure to UV light The microfish are built using a photosensitive material and are constructed one layer at a time allowing each set of functional nanoparticles to be printed into specific parts of the fish bodies This method has made it easier for us to test different designs for these microrobots and to test different nanoparticles to insert new functional elements into these tiny structures It s my personal hope to further this research to eventually develop surgical microrobots that operate safer and with more precision said Li Explore further Nanoengineers can print 3D microstructures in mere seconds More information 3D Printed Artificial Microfish by Wei Zhu Jinxing Li Yew J Leong Isaac Rozen Xin Qu Renfeng Dong Zhiguang Wu Wei Gao Peter H Chung Joseph Wang and Shaochen Chen all of the Department of NanoEngineering at the UC San Diego Jacobs School of Engineering This paper was featured as a cover on the Aug 12 2015 issue of the journal Advanced Materials onlinelibrary wiley com wol1 doi 10 1002 adma 201501372 abstract Journal reference Advanced Materials Provided by University of California San Diego 855 shares feedback to editors Tweet Favorites Email Print PDF Featured Last comments Popular Detection of gravitational waves would open new window on universe Feb 10 2016 58 Gravitational waves detected 100 years after Einstein s prediction Feb 11 2016 144 GPS tracking down to the centimeter Feb 11 2016 10 A metal that behaves like water Feb 11 2016 2 Physicists create first photonic Maxwell s demon 14 hours ago 3 more Phys org on facebook Relevant PhysicsForums posts Zeno s arrow paradox 1 hour ago Arrows vs plate armor 1 hour ago Wave impedance of free space 1 hour ago Work done on a stationary bycicle 1 hour ago Brainstorming Large scale piezoelectricity generation 3 hours ago free fall acceleration help 3 hours ago More from General Physics Related Stories Nanoengineers can print 3D microstructures in mere seconds September 13 2012 Phys org Nanoengineers at the University of California San Diego have developed a novel technology that can fabricate in mere seconds microscale three dimensional 3D structures out of soft biocompatible hydrogels Liver like device via 3 D printer May 13 2014 Phys org Nanoengineers at the University of California San Diego have developed a 3 D printed device inspired by the liver to remove dangerous toxins from the blood Microrobots armed with new force sensing system to probe cells October 13

    Original URL path: http://phys.org/news/2015-08-3d-printing-microscopic-fish-team-method.html (2016-02-13)
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  • A printable, flexible, lightweight temperature sensor
    simplify the circuitry we could print our sensors onto adhesive plasters that could then monitor body temperature For example a plaster applied directly to a wound or after surgery could provide warning of infection by detecting local changes in temperature due to inflammation Other possible applications include wearable electronic apparel where the sensor could be applied beneath fabric to measure temperature during sporting and other activities Explore further Omron sensor can do security and hot soup checks w Video More information Ultraflexible large area physiological temperature sensors for multipoint measurements PNAS www pnas org cgi doi 10 1073 pnas 1515650112 Journal reference Proceedings of the National Academy of Sciences Provided by University of Tokyo 1103 shares feedback to editors Tweet Favorites Email Print PDF Featured Last comments Popular Detection of gravitational waves would open new window on universe Feb 10 2016 58 Gravitational waves detected 100 years after Einstein s prediction Feb 11 2016 144 GPS tracking down to the centimeter Feb 11 2016 10 A metal that behaves like water Feb 11 2016 2 Physicists create first photonic Maxwell s demon 14 hours ago 3 more Phys org on facebook Relevant PhysicsForums posts Zeno s arrow paradox 1 hour ago Arrows vs plate armor 1 hour ago Wave impedance of free space 1 hour ago Work done on a stationary bycicle 1 hour ago Brainstorming Large scale piezoelectricity generation 3 hours ago free fall acceleration help 3 hours ago More from General Physics Related Stories Omron sensor can do security and hot soup checks w Video July 15 2012 Phys org Japan based Omron is promoting its small sized thermal area sensor with a flexible future of use as a security system check energy saver or smartphone companion to warn you that your turkey broth is still Fever alarm armband A wearable printable temperature sensor February 22 2015 University of Tokyo researchers have developed a fever alarm armband a flexible self powered wearable device that sounds an alarm in case of high body temperature This armband will be presented at the 2015 IEEE International Low power barometric pressure sensor for mobile and wearable gadgets and iot devices February 27 2015 Infineon Technologies AG has launched an ultra high 5cm resolution miniature MEMS Micro Electro Mechanical Systems pressure sensor for use in mobile and wearable gadgets and IoT Internet of Things devices The DPS310 From tobacco to cyberwood March 30 2015 Swiss scientists from ETH Zurich have developed a thermometer that is at least 100 times more sensitive than previous temperature sensors It consists of a bio synthetic hybrid material of tobacco cells and nanotubes New composite material as CO2 sensor June 8 2015 A new material changes its conductivity depending on the concentration of CO2 in the environment The researchers who developed it have utilized the material to produce a miniature simply constructed sensor Scientists developed super sensitive magnetic sensor October 30 2015 Researchers from the National University of Singapore NUS have developed a new hybrid magnetic sensor that

    Original URL path: http://phys.org/news/2015-11-printable-flexible-lightweight-temperature-sensor.html (2016-02-13)
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