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Topic: Wireless energy transfer

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	BBC NEWS \| Technology \| Physics promises wireless power
		Typically, systems that use electromagnetic radiation, such as radio antennas, are not suitable for the efficient transfer of energy because they scatter energy in all directions, wasting large amounts of it into free space.
		When energy is applied to these objects it remains bound to them, rather than escaping to space.
		The team from MIT is not the first group to suggest wireless energy transfer.
	news.bbc.co.uk /2/hi/technology/6129460.stm (862 words)

	Science Fair Projects - Wireless energy transfer
		Wireless energy transfer is wireless transfer of electromagnetic energy via electromagnetic induction.
		TET systems work by transmitting electromagnetic energy through the skin from an external power source by running a large AC current through an external coil to generate a magnetic flux.
		The building of a global wireless energy distribution system called the Wardenclyffe Tower was started almost a century ago by Nikola Tesla but was abandoned because of lack of funds.
	www.all-science-fair-projects.com /science_fair_projects_encyclopedia/Wireless_power_transmission (269 words)

	2006 AIP Industrial Physics Forum
		radios, cell-phones, laptops, robots), which are currently being powered by on-site conversion of chemical energy, justifies revisiting the old dream of the pioneers of electrical applications (e.g.
		Tesla, Edison): transporting electrical energy wirelessly; where for optimal practicality, the energy transfer should be independent of the details of the geometry of the space in which the scheme is being used (e.g.
		Nevertheless, via detailed theoretical, and numerical analyses of typical real-world model-situations and realistic material parameters, we establish that such a non-radiative scheme could indeed be practical for middle-range wireless energy transfer (i.e.
	www.aip.org /ca/2006/soljacic.html (292 words)

	Spartanburg SC \| GoUpstate.com \| Spartanburg Herald-Journal (Site not responding. Last check: )
		The term wireless is normally used to refer to any type of electrical or electronic operation which is accomplished without the use of a "hard wired" connection.
		The term "wireless" came into public use to refer to a radio receiver or transceiver (a dual purpose receiver and transmitter device), establishing its usage in the field of wireless telegraphy early on; now the term is used to describe modern wireless connections such as in cellular networks and wireless broadband Internet.
		It is also used in a general sense to refer to any type of operation that is implemented without the use of wires, such as "wireless remote control", "wireless energy transfer", etc. regardless of the specific technology (e.g., radio, infrared, ultrasonic, etc.) that is used to accomplish the operation.
	www.goupstate.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=wireless (390 words)

	Wireless energy transfer can potentially recharge laptops, cell phones without cords
		But transferring energy from one point to another through ordinary electromagnetic radiation is typically very inefficient, and can even be dangerous: The waves tend to spread in all direction, so most of the energy is lost to the environment.
		Energy would only be picked up by gadgets specially designed to "resonate" with the field.
		While rooted in well-known laws of physics, non-radiative energy transfer is a novel application no one seems to have pursued before.
	www.eurekalert.org /pub_releases/2006-11/aiop-wet110306.php (880 words)

	Goodbye wires… - MIT News Office
		Imagine a future in which wireless power transfer is feasible: cell phones, household robots, mp3 players, laptop computers and other portable electronics capable of charging themselves without ever being plugged in, freeing us from that final, ubiquitous power wire.
		At first glance, such a power transfer is reminiscent of relatively commonplace magnetic induction, such as is used in power transformers, which contain coils that transmit power to each other over very short distances.
		Wireless power transfer over two-meter distance, from the coil on the left to the coil on the right, where it powers a 60W light bulb.
	web.mit.edu /newsoffice/2007/wireless-0607.html (1274 words)

	New Technology: Wireless Energy Sources for your Laptop and Cell Phone \| zZine Magazine (Site not responding. Last check: )
		Using this method, the energy can be transferred across a room, and through the use of a power transmitter, would only send out a non-radiative electromagnetic field that would only be picked up by devices specially made to receive it.
		The application of non-radiative energy transfer is somewhat of an unexplored concept in the physics community, and as such, Soljacic explains, was rather unfamiliar territory.
		Soljacic and his team calculate that one day, non-radiative energy transfer may be used in other devices besides phones and laptops, possibly even being used to power machines in the industrial workplace and a range of other home comfort technologies.
	www.zzine.org /node/1792 (427 words)

	Wireless energy transfer can potentially recharge laptops, cell phones without cords
		Energy would only be picked up by gadgets specially designed to "resonate" with the field.
		While rooted in well-known laws of physics, non-radiative energy transfer is a novel application no one seems to have pursued before.
		Wireless, he said, could also power other household gadgets that are now becoming more common.
	www.innovationsreport.de /html/berichte/physik_astronomie/bericht-74131.html (766 words)

	Imprint Publications, Waterloo - The future in wireless energy transfer
		Wireless energy transfer might soon follow wireless information transfer into commercial development and widespread use.
		The more practical applications include portable wireless devices like cell phones and personal music devices, but developers of non-portable technologies like desktop computers are eager to ban the tangle of wires and cords from future technology.
		This was because the power transmitters emitted energy indiscriminately, wasting energy in the surrounding area.
	imprint.uwaterloo.ca /mambo/index.php?option=com_content&task=view&id=653&Itemid=57&issuedate=2006-12-01 (319 words)

	Look, Ma - no wires (Site not responding. Last check: )
		Because the energy would jump only to a receiving device that resonates with the originating source, wireless energy transfer would be harmless to people, Soljacic says.
		The recent Hollywood movie "The Prestige" depicts Tesla using a form of wireless energy transfer around 1899 to light hundreds of electric light bulbs planted in the ground in an open field some 25 miles from where the energy was being generated.
		But such devices require the energy source and device to be in very close proximity in relation to their sizes, meaning that in small devices, the source and device must nearly touch one another.
	www.topix.net /content/csm/0408474761097531403404358358630599125670 (1457 words)

	Benchmarking - Energy Benchmarking Group is an association of companies that conducts benchmarking studies to identify ...
		Energy Benchmarking Group™ is an association of companies that conducts benchmarking studies to identify the best practices surrounding the energy industry that improve the overall operations of the members.
		The scope of Energy Benchmarking Group™ membership includes those organizations that are involved in exploration, production, transmission, trading, marketing, sales, processing, refining, distribution, pipeline or service in the energy industry as part of or in support of their core business(es).
		Energy Benchmarking Group™ will identify and present to members opportunities to participate in Benchmarking studies on various topics addressing issues of importance to the energy industry.
	www.benchmarkingnetwork.com /energy (634 words)

	PhysOrgForum Science, Physics and Technology Discussion Forums -> wireless energy transfer
		Wireless energy is not grounded as our normal electricity and telephone is grounded.
		I don't think they are talking about sending energy to power the phones over cell lines, they would have to create magnetic fields the entire size of their service areas and that would be ridiculous.
		On the contrary, the energy in question was already present and a device was created in his mind that would promote the collection of this energy and subsequent retransmission by wire to the device(s) intended.
	forum.physorg.com /index.php?showtopic=10593 (1327 words)

	Directory:Wireless Transmission of Electricity - PESWiki
		Wireless energy transfer, also known as wireless energy transmission, is the process that takes place in any system where electromagnetic energy is transmitted from a power source (such as a Tesla coil) to an electrical load, without interconnecting wires.
		Wireless transmission is employed in cases where interconnecting wires are inconvenient, hazardous, or impossible.
		Though the physics can be similar (pending on the type of wave used), there is a distinction from electromagnetic transmission for the purpose of transferring information (radio), where the amount of power transmitted is only important when it affects the integrity of the signal.
	www.peswiki.com /index.php/Directory:Wireless_Transmission_of_Electricity (454 words)

	EADS N.V. - Solar energy by laser: new fuel for space missions
		Alongside the vision of energy from outer space acting as a long-term backup for terrestrial energy sources, the development activities at EADS SPACE Transportation also embrace the possibility of wireless energy transmission technology for interplanetary exploration missions to the moon or Mars.
		The use of wireless energy transmission via laser beams allows the operation of moon exploration vehicles to search for ice and thus the existence of water in such regions.
		The actual source of energy is either a field of solar cells in regions that receive direct sunlight or a solar power station located in a polar orbit around the moon.
	www.eads.com /1024/en/pressdb/innovation_topic/Archiv/Sonnenenergie%20per%20Laser%3A%20neuer%20Treibstoff%20f%C3%BCr%20Weltraummissionen.html (1017 words)

	MIT researchers say wireless electricity is possible
		A physicist at MIT, Marin Soljacic, says the system he and his colleagues have developed uses an electromagnetic field to transfer energy from a source of power to a device several metres away.
		Basically, the antenna of the gadget will resonate at the same frequency as the transmitter and this will avoid the energy from being directed at other objects in the room, which do not resonate at this frequency.
		Wireless energy as a concept can have applications in industry as well besides consumer electronics, like powering roaming robots in an automated plant, he adds.
	www.earthtimes.org /articles/show/10507.html (476 words)

	IEEE Spectrum: Air Power (Site not responding. Last check: )
		Electricity is routinely transferred in this way in transformers using induction; radio frequency identification chips are energized by radio waves emitted from RFID readers; and for years, researchers have worked on transferring energy over long distances using microwaves.
		So the amount of energy that can be picked up by a receiver located at any given point away from the transmitter’s antenna is only a fraction of the total amount of energy being put into the transmitter.
		Now, in the MIT scheme, instead of familiar radio waves, energy is carried by “evanescent waves,” which owe their existence to a wrinkle in the laws that govern electromagnetism.
	www.spectrum.ieee.org /nov06/4735 (1024 words)

	Linked external page (Vacilando.Org)
		Wireless energy transfer has been thought about for centuries Hence, a simple copper antenna designed to have long-lived resonance could transfer energy to a laptop with its own antenna resonating at the same frequency.
		Wireless power for gadgets Others have worked on highly directional mechanisms of energy transfer such as lasers.
		Energy used to re-charge device 5) Energy not transferred to laptop re-absorbed by source antenna.
	www.vacilando.org /index.php?x=cache&reqcache=73997711832522826cce37abae742d27 (900 words)

	Nicola Tesla - with his wireless energy transfer - may have touched teleportation without being aware of it.
		Consequently, their clients were capable of Nicola Tesla - with his wireless energy transfer - may have touched teleportation without being aware of it.
		energy of Nicola Tesla - with his wireless energy transfer - may have touched teleportation without being aware of it.
		Nicola Tesla - with his wireless energy transfer - may have touched teleportation without being aware of it.
	www.hscti.com /nicola_tesla.htm (2803 words)

	EETimes.com - Team claims midrange wireless energy transfer
		The solution, according to Soljacic, is "nonradiative resonant energy transfer," which he says can harness omnidirectional energy beacons without wasting energy, without requiring a clear line of sight and without damaging obstacles in the process.
		Power from such energy beacons would pass harmlessly through everything but their intended targets, by virtue of resonant power antennas that would be tuned to the power beacon's frequency in a lock-and-key approach.
		Unlike an induction charger, which immediately begins transferring energy at its peak rate, a resonant charger must slowly ramp up the oscillation in the receiver antenna until the peak rate of energy transfer is reached.
	www.eetimes.com /issue/tech/showArticle.jhtml?articleID=194400157 (877 words)

	dailywireless.org » Wireless Power Transmission
		Nineteenth-century physicist and engineer Nikola Tesla experimented with long-range wireless energy transfer, but his most ambitious attempt - the 29m high aerial known as Wardenclyffe Tower, in New York - failed when he ran out of money.
		A UK company called Splashpower has designed wireless recharging pads onto which gadget lovers can directly place their phones and MP3 players to recharge them.
		Energy would only be picked up by gadgets specially designed to “resonate”; with the field.
	www.dailywireless.org /2006/11/15/wireless-power-transmission (271 words)

	Marin Soljačić: Wireless Power Transfer
		wireless power transfer applications seem to be quite encouraging.
		wireless transfer of 60W of power over 2 meter distances.
		"Wireless energy promise powers up," Jonathan Fildes, news.bbc.co.uk (featured on the front page of BBC News), June 7th (2007).
	www.mit.edu /~soljacic/wireless_power.html (399 words)

	DSP DesignLine \| Technology cutting final land-line links
		The wireless market for manufacturing alone is growing at about 26 percent per year and is predicted to balloon from $326 million in 2005 to more than $1 billion by 2010, according to a study by the ARC Advisory Group.
		Power from such energy beacons would pass harmlessly through everything but the intended targets, by virtue of resonant-power antennas that would be tuned to the power beacon's frequency in a lock-and-key approach.
		Simulations of the nonradiative energy transfer technique at MIT have shown the approach holds promise for successful transfer within a range of 12 feet.
	www.dspdesignline.com /news/showArticle.jhtml?articleID=194500285 (1294 words)

	Unwired Energy -- Physics News Update 801
		The idea of wireless energy transfer is not new.
		Energy would only be picked up by appliances specially designed to resonate with the field; most of the energy not picked up by a receiver would be reabsorbed by the emitter.
		Contrary to more traditional, radiative means of energy transmission such as microwaves, it would not require a direct line of sight.
	www.aip.org /pnu/2006/split/801-1.html (238 words)

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