The researchers programmed the smartphone to signal its location by emitting high-frequency acoustic “chirps.” These are inaudible to our ears, but sensitive enough for small microphones on the laser emitter to pick up. Optical wireless power transmission at long wavelengths. 1--4. https://doi.org/10.1109/WMCaS.2013.6563551, A. Sahai and D. Graham. NASA. “Safety was our focus in designing this system,” said co-author Shyam Gollakota, an associate professor in the UW’s Paul G. Allen School of Computer Science & Engineering. USB 2.0 Standard. The team created a way for a narrow, invisible beam to charge a phone from across the room and at a speed just as fast as the modern USB cable. (2017). 1995. (2017). In Proceedings of the ACM SIGCOMM 2013 Conference on SIGCOMM (SIGCOMM ‘13). Share. 2014. https://doi.org/10.1364/CLEO_SI.2014.STu3M.5. Charging a Smartphone Across a Room Using Lasers • 143:3 exposure time. This extension means that the emitter could be aimed at a wider charging surface, such as a counter or tabletop, and charge a smartphone placed anywhere on that surface. 2004. “In addition to the safety mechanism that quickly terminates the charging beam, our platform includes a heatsink to dissipate excess heat generated by the charging beam,” said Majumdar, who is also a researcher in the UW Molecular Engineering & Sciences Institute. 2016. Quasistatic Cavity Resonance for Ubiquitous Wireless Power Transfer. http://www.wibotic.com/, Charging a Smartphone Across a Room Using Lasers, All Holdings within the ACM Digital Library. Thursday, November 26 2020. ACM, New York, NY, USA, 39--50. https://doi.org/10.1145/2486001.2486015. Further, extensive characterization of our safety system shows that we can turn off our laser source much before a human moving at a maximum speed of 44 m/s can even enter the high-power laser beam area. (2011). (1995). Towards Autonomously-Powered CRFIDs. 2017. 2013. International Electrotechnical Commission. Share. Tweet. (2004). To ensure that the charging beam does not overheat the smartphone, the team also placed thin aluminum strips on the back of the smartphone around the power cell. MTP2955. 2008. Using a laser to wirelessly charge a smartphone safely across a room. KA Unnikrishna Menon, Achyuta Gungi, and Balaji Hariharan. “As a result, when the guard beam is interrupted by the movement of a person, the emitter detects this within a fraction of a second and deploys a shutter to block the charging beam before the person can come in contact with it.”. Ossia Inc. 2017. (2017). The team says that the method of charging … 4. Using a laser to wirelessly charge a smartphone safely across a room Date 2018-02-25 Category News Tags UW.Edu “ Although mobile devices such as tablets and smartphones let us communicate, work and access information wirelessly, their batteries must still be charged by plugging them in to an outlet. Charging a smartphone wirelessly across the room using a laser. The generator is mounted on top of an aluminum heatsink. As the team reports in a paper published online in December in the Proceedings of the Association for Computing Machinery on Interactive, Mobile, Wearable & Ubiquitous Technologies, a narrow, invisible beam from a laser emitter can deliver charge to a smartphone sitting across a room - and can potentially charge a smartphone as quickly as a standard USB cable. The charging laser and guard lasers are normally invisible to the human eye, but red beams have been inserted in place of the guard beams for demonstration purposes. 2009. Scientists, together with those of Indian beginning, have developed a laser emitter that can safely cost a smartphone across a room as promptly as a common USB cable. Breaking News. James C Lin. ACM, New York, NY, USA, 1515--1525. https://doi.org/10.1145/2858036.2858580. Home; UW Department of Electrical & Computer Engineering; Spotlights ; Using a laser to wirelessly charge a smartphone safely across a room. 2013. Standard. In Private communication. The UW team’s prototype laser emitter. The charging beam is generated by a laser emitter that the team configured to produce a focused beam in the near-infrared spectrum. IEC 60950-1 (2005) 2005. The high-powered guard beam is emitted from the central port. 2015. Engineers at the University of Washington have demonstrated the ability to charge a smartphone wireless from across a room using a laser. 2015. Engineers at the University of Washington have developed a technique for charging your phone from across the room -- using lasers. Ltd Hebei I.T. "The laser used for the charging is normally colorless; however, for demonstration purposes the investigators used red beams. In Proceedings of the 2016 CHI Conference on Human Factors in Computing Systems (CHI ‘16). How Stock Exchange works; Decide on the Impression You Want to Give – Self Branding…. 0.5W Solar panel. For example, the interlock of the MHGoPower LSM-010 laser has a … In 2013 IEEE 39th Photovoltaic Specialists Conference (PVSC). F Steinsiek, KH Weber, WP Foth, HJ Foth, and C Schafer. RFID Sensor Networks with the Intel WISP. Standard. But the emitter can be modified to expand the charging beam’s radius to an area of up to 100 square centimeters from a distance of 12 meters, or nearly 40 feet. The next generation of nano-scale optical devices are expected to operate with Gigahertz frequency, which could reduce the shutter’s response time to nanoseconds, added Majumdar. Hyeonseok Lee, Hyun-Jun Park, Hoon Sohn, and Il-Bum Kwon. In Proceedings of the 2016 ACM SIGCOMM Conference (SIGCOMM ‘16). In Robotics and Automation (ICRA), 2012 IEEE International Conference on. Ambient Backscatter: Wireless Communication out of Thin Air. Turbocharging Ambient Backscatter Communication. © 2021 University of Washington | Seattle, WA, Using a laser to wirelessly charge a smartphone safely across a room, Proceedings of the Association for Computing Machinery on Interactive, Mobile, Wearable & Ubiquitous Technologies, Molecular Engineering & Sciences Institute, Department of Electrical & Computer Engineering, Paul G. Allen School of Computer Science & Engineering, In pandemic milestone, UW brings COVID-19 vaccines to frontline health care workers, Bait and switch: Mislabeled salmon, shrimp have biggest environmental toll, UW announces Maggie Walker Deanship in the College of the Environment. Charging Unplugged: Will Distributed Laser Charging for Mobile Wireless Power Transfer Work? February 21, 2018. To ensure that the charging beam does not overheat the smartphone, the team also placed thin aluminum strips on the back of the smartphone around the power cell. https://www.adafruit.com/product/1054, Amir Arbabi, Yu Horie, and Andrei Faraon. The research was funded by the National Science Foundation, the Alfred P. Sloan Foundation and Google Faculty Research Awards. ACM, New York, NY, USA, 619--630. https://doi.org/10.1145/2619239.2626312, Advanced Photonix. In 2013 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS). For more information, contact the team at laserpower@cs.washington.edu. Efficient wireless power transfer using underground relay coils. 22 February 2018. ([n. d.]). Researchers mounted a thin power cell to the back of a smartphone, which charges the smartphone using power from the laser. The key challenges in achieving this are multi-fold: delivering greater than a watt of power across the room, minimizing the exposure of the resulting high-power lasers to human tissue, and finally ensuring that the design meets the form-factor requirements of a smartphone and requires minimal instrumentation to the environment. The beam charges the smartphone via a power cell mounted on the back of the phone. The blocking of the guard beams can be sensed quickly enough to detect the fastest motions of the human body, based on decades of physiological studies. The charging laser and guard lasers are normally invisible to the human eye, but red beams have been inserted here in place of the guard beams for demonstration purposes. (2004). The researchers designed the laser emitter to terminate the charging beam when any object — such as part of a person’s body — comes into contact with one of the guard beams. (2009). Researchers installed a skinny vigor phone to the returned of a smartphone, which costs the smartphone the use of power from the laser … If so, the pre-bedtime task of plugging in your smartphone, tablet or laptop may someday be replaced with a simpler ritual: placing it on a table. Researchers developed a cell that can power a smartphone using energy from laser beams – and it charges just as quickly as a direct connection with a USB cable. Researchers from the University of Washington have devised a new way to charge a smartphone from across the room using lasers. (Image Source; University of Washington) Scientists, including those of Indian origin, have developed a laser emitter that can safely charge a smartphone across a room as quickly as a standard USB cable. https://images-na.ssl-images-amazon.com/images/I/714s6fjypPS.pdf. In Proceedings of the 11th ACM Conference on Emerging Networking Experiments and Technologies (CoNEXT ‘15). Measurement Science and Technology 21, 10 (2010), 105207. (Shanghai) Co. 2001. Information technology equipment âĂŞ Safety. Laser diode- Red. The researchers believe that their robust safety and heat-dissipation features could enable wireless, laser-based charging of other devices, such as cameras, tablets and even desktop computers. 2007. 2006. New wireless charging tech juices your phone from across the room using lasers Engineers at the University of Washington have for the first time developed a method to safely charge a smartphone wirelessly using a laser. 2011. (2017). The guard beams deliver no charge to the phone themselves, but their reflection from the smartphone back to the emitter allows them to serve as a “sensor” for when a person will move in the path of the guard beam. Using a laser to wirelessly charge a smartphone safely across a room. IEEE Vehicular Technology Magazine 11, 4 (Dec 2016), 36--45. https://doi.org/10.1109/MVT.2016.2594944, Vincent Liu, Aaron Parks, Vamsi Talla, Shyamnath Gollakota, David Wetherall, and Joshua R. Smith. In Computing, Communication and Networking Technologies (ICCCNT), 2014 International Conference on. Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies, M. C. Achtelik, J. Stumpf, D. Gurdan, and K. M. Doth. “This acoustic localization system ensures that the emitter can detect when a user has set the smartphone on the charging surface, which can be an ordinary location like a table across the room,” said co-lead author Vikram Iyer, a UW doctoral student in electrical engineering. 2009. Using a Laser to Wirelessly Charge a Smartphone Safely Across a Room March 15, 2018 by Paul Shepard Although mobile devices such as tablets and smartphones let us communicate, work and access information wirelessly, their batteries must still be charged by plugging them in to an outlet. 2013. Researchers developed a cell that can power a smartphone using energy from laser beams – and it charges just as quickly as a direct connection with a USB cable. The safety system that shuts off the charging beam centers on low-power, harmless laser “guard beams,” which are emitted by another laser source co-located with the charging laser-beam and physically “surround” the charging beam. http://wiki.seeedstudio.com/index.php?title=0.5w_Solar_Panel_55*70, Vamsi Talla, Bryce Kellogg, Benjamin Ransford, Saman Naderiparizi, Shyamnath Gollakota, and Joshua R. Smith. To manage your alert preferences, click on the button below. Engineers at the University of Washington have for the first time developed a method to safely charge a smartphone wirelessly using a laser. Engineers at the University of Washington have developed a method to safely charge a smartphone wirelessly — using a laser. In Proceedings of the 2014 ACM Conference on SIGCOMM (SIGCOMM ‘14). The ACM Digital Library is published by the Association for Computing Machinery. We use cookies to ensure that we give you the best experience on our website. 2004. Shane S. Clark, Jeremy Gummeson, Kevin Fu, and Deepak Ganesan. Home battery charging Charging a smartphone wirelessly across the room using a laser. These strips act as a heatsink, dissipating excess heat from the charging beam and allowing the laser to charge the smartphone … 2010. FingerIO: Using Active Sonar for Fine-Grained Finger Tracking. Laser power beaming for defense and security applications. Near-IR laser system safely charges a smartphone wirelessly from across a room This laser-based wireless charging system was created by University of Washington engineers. 2017. ... the back of a smartphone and hit it with a narrow laser … The wireless charging system created by University of Washington engineers. [n. d.]. Researchers have long speculated that a device like this might make wires and charging cables a thing of the past, allowing people to beam energy invisibly across a room to … Safety of Laser Products. 2014. Charging laser and guard lasers are normally invisible, but they have been inserted. By James Urton, UW News. Science 317, 5834 (2007), 83--86. https://doi.org/10.1126/science.1143254 arXiv:http://science.sciencemag.org/content/317/5834/83.full.pdf. Illuminated in red is one of the 3-D printed retroreflectors, which reflects the low-power guard beams to diodes on the laser emitter. Interruption of the guard beams triggers a safety system which blocks the charging beam.Mark Stone/University of Washington, “The guard beams are able to act faster than our quickest motions because those beams are reflected back to the emitter at the speed of light,” said Gollakota. http://www.usb.org/developers/docs/usb20_docs/, Monia Ghobadi, Ratul Mahajan, Amar Phanishayee, Nikhil Devanur, Janardhan Kulkarni, Gireeja Ranade, Pierre-Alexandre Blanche, Houman Rastegarfar, Madeleine Glick, and Daniel Kilper. “These features give our wireless charging system the robust safety standards needed to apply it to a variety of commercial and home settings.”. “We have designed, constructed and tested this laser-based charging system with a rapid-response safety mechanism, which ensures that the laser emitter will terminate the charging beam before a person comes into the path of the laser.”, The University of Washington engineers behind the wireless charging system for mobile devices.Standing (left-to-right): Vikram Iyer, Shyam Gollakota, Elyas Bayati.Seated (left-to-right): Rajalakshmi Nandakumar, Arka Majumdar.Mark Stone/University of Washington. As the team reports in a paper published online in December in the Proceedings of the Association for Computing Machinery on Interactive, Mobile, Wearable & Ubiquitous Technologies, a narrow, invisible beam from a laser emitter can deliver charge to a smartphone sitting across a room — and can potentially charge a smartphone as quickly as a standard USB cable. Next to each guard beam port are clear photodiodes, which detect the guard beams when they’re reflected back to the emitter by retroreflectors on the phone.Mark Stone/University of Washington. https://www.digikey.com/product-detail/en/advanced-thermal-solutions-inc/ATS-60000-C1-R0/ATS1376-ND/1285090, Sony. 2017. In addition, the team custom-designed safety features — including a metal, flat-plate heatsink on the smartphone to dissipate excess heat from the laser, as well as a reflector-based mechanism to shut off the laser if a person tries to move in the charging beam’s path. CLEO: 2014, STu3M.5. International Electrotechnical Commission. Power Beaming for Space-Based Electricity on Earth: Near-Term Experiments with Radars, Lasers and Satellites. Using a laser to wirelessly charge a smartphone safely across a room 20 February 2018, by James Urton The wireless charging system created by University of Washington engineers. These strips act as a heatsink, dissipating excess heat from the charging beam and allowing the laser to charge the smartphone for hours. In Proceedings of the 6th ACM Conference on Embedded Network Sensor Systems (SenSys ‘08). Resonant wireless power transfer to ground sensors from a UAV. ATS-6000-C1-RO. Summerer Leopold and Oisin Purcell. Forget today's pad-based regular wireless charging! (2001). (2011), 804514-804514-8 pages. ProjecToR: Agile Reconfigurable Data Center Interconnect. In Solar Power from Space-SPS‘04, Vol. Michael Buettner, Richa Prasad, Alanson Sample, Daniel Yeager, Ben Greenstein, Joshua R. Smith, and David Wetherall. Rev. To accomplish this, the team mounted a thin power cell to the back of a smartphone, which charges the smartphone using power from the laser. Billy Hurley, Digital Editorial Manager . 2012. 2017. “But instead of plugging your phone in, you simply place it on a table.”, The UW team’s prototype heatsink assembly, which can be attached to the back of a smartphone, consists of a photovoltaic cell (silver square, top) attached to a thermoelectric generator (in white). Seeed Studios. NXP Semiconductors. This alert has been successfully added and will be sent to: You will be notified whenever a record that you have chosen has been cited. As the team reports in a paper published online in December in the Proceedings of the Association for Computing Machinery on Interactive, Mobile, Wearable & Ubiquitous Technologies, a narrow, invisible beam from a laser emitter can deliver charge to a smartphone sitting across a room - and can potentially charge a smartphone as quickly as a standard USB cable. This is achieved by mounting a thin power cell to the back of a smartphone, which enables it to absorb power from the laser. (2011). They even harvested a small amount of this heat to help charge the smartphone — by mounting a nearly-flat thermoelectric generator above the heatsink strips. But the genius researchers over at the University of Washington have developed a way to charge your phone from across the room using freakin’ laser beams! In 8th ESA Workshop on Advanced Space Technologies for Robotics and Automation. These strips act … Custom 3-D printed “retroreflectors” placed around the power cell on the smartphone reflect the guard beams back to photodiodes on the laser emitter. https://doi.org/10.1145/2716281.2836089, Wibotic. Hal E Bennett. Brent Griffin and Carrick Detweiler. Second, even if one can turn off the power to the laser immediately, commodity continuous wave laser drivers have control circuits that may introduce significant delays. But engineers at the University of Washington have for the first time developed a method to safely charge a smartphone wirelessly using a laser. Check if you have access through your login credentials or your institution to get full access on this article. They developed a new type of cell on the back of a smartphone, and that cell reacts with the laser and converts that energy to charge the phone. The charging laser and guard lasers are normally invisible to the human eye, but red beams have been inserted in place of the guard beams for demonstration purposes.Mark Stone/University of Washington. The entire assembly is only 8mm thick and 40mm wide.Mark Stone/University of Washington. A narrow beam can deliver a steady 2W of power to 15 square-inch area from a distance of up to 4.3 meters, or about 14 feet. Integrated guided wave generation and sensing using a single laser source and optical fibers. Europeans Space Agency (ESA)-Advanced Concepts Team (2009). The researchers’ technology enables a laser emitter’s narrow, invisible beam to power up a smartphone from across the room — perhaps as quickly as a standard USB cable. AutoCharge: Automatically Charge Smartphones Using a Light Beam. An optical wireless power transfer system for rapid charging. 195. 2004. Demonstration of eye-safe (1550 nm) terrestrial laser power beaming at 30 m and subsequent conversion into electrical power using dedicated photovoltaics. A new IEEE standard for safety levels with respect to human exposure to radio-frequency radiation. 2016. University of Washington students have figured out a secure way to charge a smartphone with almost-infrared lasers. 1--10. Gollakota and co-author Arka Majumdar, a UW assistant professor of physics and electrical engineering, led the team that designed this wireless charging system and its safety features. [n. d.]. If you're trying to subscribe with a non-UW email address, please email uwnews@uw.edu for assistance. The wireless charging system created by University of Washington engineers. Check out the GeekWire Summit lineup A smartphone is powered up using a laser-based charging system. If you forgot your charger today, engineers from the University of Washington have a solution for you — and it’s lasers. ChargingaSmartphoneAcrossaRoomUsingLasers • 143:5 0 20 40 60 80 100 120 140 0 5 10 15 20 25 30 0 % 0.2 % 0.4 % 0.6 % 0.8 % 1 % Transmit Power (kW) Efficiency The wireless charging system created by University of Washington engineers. Co-author is Rajalakshmi Nandakumar, a UW doctoral student in the Allen School. How to Charge a Smartphone – Using Lasers. Wireless Power Transfer via Strongly Coupled Magnetic Resonances. Our results show that we can deliver more than 2 W at ranges of 4.3 m and 12.2 m for a smartphone (25 cm2) and table-top form factor (100 cm2) receiver respectively. Powering the Next Billion Devices with Wi-fi. 2011. http://www.ossia.com/, André Kurs, Aristeidis Karalis, Robert Moffatt, J. D. Joannopoulos, Peter Fisher, and Marin Soljačić. High intensity laser power beaming architecture for space and terrestrial missions. More about Smartphone, Laser, Wireless, Charger further break news from phone Laser Wireless Charger Using a laser to wirelessly charge a phone significantly across a room 1074--1076. https://doi.org/10.1109/PVSC.2013.6744326, Rajalakshmi Nandakumar, Vikram Iyer, Desney Tan, and Shyamnath Gollakota. High contrast optical shutter. International Journal of Occupational Safety and Ergonomics 19, 2 (2013), 195--202. Design of a flexible high performance quadcopter platform breaking the MAV endurance record with laser power beaming. Thomas J. Nugent, Jr. and Jordin T. Kare. J. Mukherjee, W. Wulfken, H. Hartje, F. Steinsiek, M. Perren, and S. J. Sweeney. 1995. Advanced Thermal Solutions. https://doi.org/10.1117/12.886169, Meadowlark Optics. Although mobile devices such as tablets and smartphones let us communicate, work and access information wirelessly, their batteries must still be charged by plugging them in to an outlet. Wireless power transmission experiment using an airship as relay system and a moveable rover as ground target for later planetary exploration missions. In 2011 International Conference on Space Optical Systems and Applications (ICSOS). 2011. TEC1-12706. Using a laser to wirelessly charge a smartphone safely across a room. Energous. In 2011 IEEE/RSJ International Conference on Intelligent Robots and Systems. 2004. Q. Liu, J. Wu, P. Xia, S. Zhao, W. Chen, Y. Yang, and L. Hanzo. As the team reports in a paper published online in December in the Proceedings of the Association for Computing Machinery on Interactive, Mobile, Wearable & Ubiquitous Technologies, a narrow, invisible beam from a laser emitter can deliver charge to a smartphone sitting across a room - and can potentially charge a smartphone as quickly as a standard USB cable. PLOS ONE 12, 2 (02 2017), 1--14. https://doi.org/10.1371/journal.pone.0169045. Four low-powered guard beams are emitted from ports surrounding the guard beam. (2017). 2014. To accomplish this, the … DOD and Navy applications for laser power beaming. The key challenges in achieving this are multi-fold: delivering greater than a watt of power across the room, minimizing the exposure of the resulting high-power lasers to human tissue, and finally ensuring that the design meets the form-factor requirements of a smartphone and requires minimal instrumentation to the environment. Laser power for UAVs. Yunxin Liu, Zhen Qin, and Chunshui Zhao. Using a laser to wirelessly charge a smartphone safely across a room. Communication hardware, interfaces and storage. Concepts for wireless energy transmission via laser. To ensure that the charging beam does not overheat the smartphone, the team also placed thin aluminum strips on the back of the smartphone around the power cell. http://www.meadowlark.com/store/data_sheet/opticalshutter.pdf, Aaron N. Parks, Angli Liu, Shyamnath Gollakota, and Joshua R. Smith. PDB-C156. http://energous.com/, USB Implementers Forum.

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