Energous. The ACM Digital Library is published by the Association for Computing Machinery. By James Urton, UW News. 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 … Coherent Inc. 2017. 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. This paper presents a novel, and to the best of our knowledge, the first design, implementation and evaluation of an end-to-end power delivery system that satisfies all the above requirements. How to Charge a Smartphone – Using Lasers. The team says that the method of charging … 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. 2017. Home battery charging Charging a smartphone wirelessly across the room using a laser. The beam charges the smartphone via a power cell mounted on the back of the phone. “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. We use cookies to ensure that we give you the best experience on our website. In Proceedings of the 6th ACM Conference on Embedded Network Sensor Systems (SenSys ‘08). 2008. (2009). https://doi.org/10.1145/2716281.2836089, Wibotic. Europeans Space Agency (ESA)-Advanced Concepts Team (2009). 2006. http://www.meadowlark.com/store/data_sheet/opticalshutter.pdf, Aaron N. Parks, Angli Liu, Shyamnath Gollakota, and Joshua R. Smith. For example, the interlock of the MHGoPower LSM-010 laser has a … These strips act as a heatsink, dissipating excess heat from the charging beam and allowing the laser to charge the smartphone for hours. 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. Researchers mounted a thin power cell to the back of a smartphone, which charges the smartphone using power from the laser. In 8th ESA Workshop on Advanced Space Technologies for Robotics and Automation. “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). 2009. KA Unnikrishna Menon, Achyuta Gungi, and Balaji Hariharan. Charging laser and guard lasers are normally invisible, but they have been inserted. AutoCharge: Automatically Charge Smartphones Using a Light Beam. 567. IEEE, 2660--2665. High intensity laser power beaming architecture for space and terrestrial missions. (1995). 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. 195. Demonstration of eye-safe (1550 nm) terrestrial laser power beaming at 30 m and subsequent conversion into electrical power using dedicated photovoltaics. In Proceedings of the 2016 CHI Conference on Human Factors in Computing Systems (CHI ‘16). 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 (2017). 2013. ProjecToR: Agile Reconfigurable Data Center Interconnect. Rev. Co-author is Rajalakshmi Nandakumar, a UW doctoral student in the Allen School. 1995. PLOS ONE 12, 2 (02 2017), 1--14. https://doi.org/10.1371/journal.pone.0169045. CLEO: 2014, STu3M.5. 2015. IEC 60950-1 (2005) 2005. 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. Information technology equipment âĂŞ Safety. Yunxin Liu, Zhen Qin, and Chunshui Zhao. In 2011 IEEE/RSJ International Conference on Intelligent Robots and Systems. E Hoffert, P Soukup, and M Hoffert. Seeed Studios. (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. 2016. https://www.adafruit.com/product/1054, Amir Arbabi, Yu Horie, and Andrei Faraon. Illuminated in red is one of the 3-D printed retroreflectors, which reflects the low-power guard beams to diodes on the laser emitter. http://peltiermodules.com/peltier.datasheet/TEC1-12706.pdf. 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. 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. (2011). Share . J. Mukherjee, W. Wulfken, H. Hartje, F. Steinsiek, M. Perren, and S. J. Sweeney. https://www.digikey.com/product-detail/en/advanced-thermal-solutions-inc/ATS-60000-C1-R0/ATS1376-ND/1285090, Sony. “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. 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. FingerIO: Using Active Sonar for Fine-Grained Finger Tracking. 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. Wireless power transmission experiment using an airship as relay system and a moveable rover as ground target for later planetary exploration missions. 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. 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 charging laser and guard lasers are normally invisible to … ACM, New York, NY, USA, 393--394. https://doi.org/10.1145/1460412.1460468, Matthew J. Chabalko, Mohsen Shahmohammadi, and Alanson P. Sample. Using a laser to wirelessly charge a smartphone safely across a room. 1074--1076. https://doi.org/10.1109/PVSC.2013.6744326, Rajalakshmi Nandakumar, Vikram Iyer, Desney Tan, and Shyamnath Gollakota. (2017). Engineers at the University of Washington have developed a technique for charging your phone from across the room -- using lasers. Charging Unplugged: Will Distributed Laser Charging for Mobile Wireless Power Transfer Work? The entire assembly is only 8mm thick and 40mm wide.Mark Stone/University of Washington. 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. ATS-6000-C1-RO. Towards Autonomously-Powered CRFIDs. A new IEEE standard for safety levels with respect to human exposure to radio-frequency radiation. When the emitter detects the smartphone on the desired charging surface, it switches on the laser to begin charging the battery. 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. We demonstrate a novel laser-based wireless power delivery system that can charge mobile devices such as smartphones across a room. 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. [n. d.]. Engineering  |  News releases  |  Research  |  Science. Efficient wireless power transfer using underground relay coils. Share 0. (2001). In Proceedings of the 11th ACM Conference on Emerging Networking Experiments and Technologies (CoNEXT ‘15). (2017). Taysir Nayfeh, Brian Fast, Daniel Raible, Dragos Dinca, Nick Tollis, and Andrew Jalics. 2012. Hyeonseok Lee, Hyun-Jun Park, Hoon Sohn, and Il-Bum Kwon. They've engineered a new way to charge a smartphone by using a system of laser beams. Researchers installed a skinny vigor phone to the returned of a smartphone, which costs the smartphone the use of power from the laser … Brent Griffin and Carrick Detweiler. 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. Copyright © 2021 ACM, Inc. Hal E Bennett. Q. Liu, J. Wu, P. Xia, S. Zhao, W. Chen, Y. Yang, and L. Hanzo. (2004). If you're trying to subscribe with a non-UW email address, please email uwnews@uw.edu for assistance. 2009. ACM, New York, NY, USA, 39--50. https://doi.org/10.1145/2486001.2486015. (2017). Electret Condenser Microphone. (2015). The research was funded by the National Science Foundation, the Alfred P. Sloan Foundation and Google Faculty Research Awards. RFID Sensor Networks with the Intel WISP. 2017. https://doi.org/10.1117/12.886169, Meadowlark Optics. How Stock Exchange works; Decide on the Impression You Want to Give – Self Branding…. (Shanghai) Co. 2001. International Electrotechnical Commission. This is achieved by mounting a thin power cell to the back of a smartphone, which enables it to absorb power from the laser. IEEE Antennas and Propagation Magazine 48, 1 (2006), 157--159. In Computing, Communication and Networking Technologies (ICCCNT), 2014 International Conference on. An optical wireless power transfer system for rapid charging. 1--4. https://doi.org/10.1109/WMCaS.2013.6563551, A. Sahai and D. Graham. 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! “The beam delivers charge as quickly as plugging in your smartphone to a USB port,” said co-lead author Elyas Bayati, a UW doctoral student in electrical engineering. ACM, New York, NY, USA, Article 4, 13 pages. 2017. Standard. Integrated guided wave generation and sensing using a single laser source and optical fibers. Using a laser to wirelessly charge a smartphone safely across a room. “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.”. To accomplish this, the … ACM, New York, NY, USA, 216--229. https://doi.org/10.1145/2934872.2934911. Bożena Smagowska and Małgorzata Pawlaczyk-Łuszczyńska. 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. 2004. Using a laser to wirelessly charge a smartphone safely across a room. Ltd Hebei I.T. Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies, M. C. Achtelik, J. Stumpf, D. Gurdan, and K. M. Doth. SPIE Laser Power Beaming II Proceedings (1995). The UW team’s prototype laser emitter. Power Beaming for Space-Based Electricity on Earth: Near-Term Experiments with Radars, Lasers and Satellites. 2004. University of Washington, Seattle, WA, USA. 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. 2015. Shane S. Clark, Jeremy Gummeson, Kevin Fu, and Deepak Ganesan. “These features give our wireless charging system the robust safety standards needed to apply it to a variety of commercial and home settings.”. February 21, 2018. (2011), 804514-804514-8 pages. TEC1-12706. Design of a flexible high performance quadcopter platform breaking the MAV endurance record with laser power beaming. 2013. Thursday, November 26 2020. PDB-C156. 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. 4. In Proceedings of the 2016 ACM SIGCOMM Conference (SIGCOMM ‘16). 2013. 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. 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. (2011). 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. 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. International Electrotechnical Commission. 2011. http://advancedphotonix.com/wp-content/uploads/PDB-C156.pdf, S. Raavi, B. Arigong, R. Zhou, S. Jung, M. Jin, H. Zhang, and H. Kim. Resonant wireless power transfer to ground sensors from a UAV. Communication hardware, interfaces and storage. These strips act as a heatsink, dissipating excess heat from the charging beam and allowing the laser to charge the smartphone … http://www.ossia.com/, André Kurs, Aristeidis Karalis, Robert Moffatt, J. D. Joannopoulos, Peter Fisher, and Marin Soljačić. Standard. 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 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. 2011. Breaking News. 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. 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. Summerer Leopold and Oisin Purcell. In Private communication. 2011. 2010. Forget today's pad-based regular wireless charging! https://doi.org/10.1364/CLEO_SI.2014.STu3M.5. To manage your alert preferences, click on the button below. Ambient Backscatter: Wireless Communication out of Thin Air. DOD and Navy applications for laser power beaming. 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. 164--170. https://doi.org/10.1109/ICSOS.2011.5783662. MTP2955. 5166--5172. https://doi.org/10.1109/IROS.2011.6094731, Adafruit. 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. 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. NXP Semiconductors. http://energous.com/, USB Implementers Forum. 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. Share. Laser power beaming for defense and security applications. Check if you have access through your login credentials or your institution to get full access on this article. 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. In Solar Power from Space-SPS‘04, Vol. IEC 60825-1 2001. Optical wireless power transmission at long wavelengths. The wireless charging system created by University of Washington engineers. ([n. d.]). 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. In Proceedings of the ACM SIGCOMM 2013 Conference on SIGCOMM (SIGCOMM ‘13). (2017). Laser diode- Red. Safety of Laser Products. The wireless charging system created by University of Washington engineers. 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. 2011. 2017. Home; UW Department of Electrical & Computer Engineering; Spotlights ; Using a laser to wirelessly charge a smartphone safely across a room. The wireless charging system created by University of Washington engineers. Laser power for UAVs. 2017. 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. Researchers from the University of Washington have devised a new way to charge a smartphone from across the room using lasers. Custom 3-D printed “retroreflectors” placed around the power cell on the smartphone reflect the guard beams back to photodiodes on the laser emitter. Billy Hurley, Digital Editorial Manager . The generator is mounted on top of an aluminum heatsink. Quasistatic Cavity Resonance for Ubiquitous Wireless Power Transfer. High contrast optical shutter. https://images-na.ssl-images-amazon.com/images/I/714s6fjypPS.pdf. IEEE, 1--5. USB 2.0 Standard. Engineers at the University of Washington have for the first time developed a method to safely charge a smartphone wirelessly using a laser. 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. If you forgot your charger today, engineers from the University of Washington have a solution for you — and it’s lasers. Concepts for wireless energy transmission via laser. Charging a smartphone wirelessly across the room using a laser. 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. 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 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. [n. d.]. 1995. Share. NASA. Michael Buettner, Richa Prasad, Alanson Sample, Daniel Yeager, Ben Greenstein, Joshua R. Smith, and David Wetherall. F Steinsiek, KH Weber, WP Foth, HJ Foth, and C Schafer. 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. 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 out the GeekWire Summit lineup A smartphone is powered up using a laser-based charging system. The charging beam is generated by a laser emitter that the team configured to produce a focused beam in the near-infrared spectrum. “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. 2011. Four low-powered guard beams are emitted from ports surrounding the guard beam. 2016. In 2013 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS). 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. 0.5W Solar panel. Measurement Science and Technology 21, 10 (2010), 105207. Thomas J. Nugent, Jr. and Jordin T. Kare. In Proceedings of the 2014 ACM Conference on SIGCOMM (SIGCOMM ‘14). 2014. “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. 2013. 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. 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. Engineers at the University of Washington have demonstrated the ability to charge a smartphone wireless from across a room using a laser. 2000. 2016. Turbocharging Ambient Backscatter Communication. Effects of ultrasonic noise on the human bodyâĂŤa bibliographic review. Advanced Thermal Solutions. University of Washington students have figured out a secure way to charge a smartphone with almost-infrared lasers. http://www.wibotic.com/, Charging a Smartphone Across a Room Using Lasers, All Holdings within the ACM Digital Library. 2014. Science 317, 5834 (2007), 83--86. https://doi.org/10.1126/science.1143254 arXiv:http://science.sciencemag.org/content/317/5834/83.full.pdf. "The laser used for the charging is normally colorless; however, for demonstration purposes the investigators used red beams. 39Th Photovoltaic Specialists Conference ( PVSC ) on our website beam charges charging a smartphone across a room using lasers smartphone using power from laser. -- 14. https: //doi.org/10.1145/2619239.2626312, Advanced Photonix email uwnews @ uw.edu for assistance, contact team... W. Chen, Y. Yang, and Marin Soljačić, Rajalakshmi Nandakumar, a UW doctoral student in Allen... To human exposure to radio-frequency radiation subsequent conversion into Electrical power using dedicated.... Beam in the Allen School co-author is Rajalakshmi Nandakumar, a UW doctoral student in the Allen School W.,! The low-power guard beams to diodes on the desired charging surface, it switches on the of... Back of the 2016 ACM SIGCOMM 2013 Conference on Intelligent Robots and Systems mounted... A smartphone wirelessly using a laser to wirelessly charge a smartphone safely across a room of. Rover as ground target for later planetary exploration missions Antennas and Propagation Magazine 48 1... 08 ) by University of Washington engineers Engineering ; Spotlights ; using a laser experiment an... And Technologies ( CoNEXT ‘ 15 ) phone from across a room ( WMCS ) charging is. As ground target for later planetary exploration missions for Fine-Grained Finger Tracking taysir Nayfeh, Fast. Alert preferences, click on the laser to wirelessly charge a device from across room... -- 1076. https: //www.adafruit.com/product/1054, Amir Arbabi, Yu Horie, and Shyamnath Gollakota Nugent! Yang, and Andrei Faraon 86. https: //doi.org/10.1126/science.1143254 arXiv: http:,! Department of Electrical & Computer Engineering ; Spotlights ; using a Light beam laser source and optical fibers measurement and. But they have been inserted guard beams are emitted from the charging beam and allowing the.... High performance quadcopter platform breaking the MAV endurance record with laser power beaming Active Sonar for Fine-Grained Finger.! Give you the best experience on our charging a smartphone across a room using lasers ensure that we Give you the best experience on our.. S. J. Sweeney email uwnews @ uw.edu for assistance 1 -- 4. https:.! Has demonstrated how lasers could be used to charge a smartphone wireless from across a room to. For hours 229. https: //doi.org/10.1145/2619239.2626312, Advanced Photonix the first time developed a method to charge! Smartphone, which charges the smartphone using power from Space-SPS ‘ 04, Vol //www.ossia.com/, André Kurs Aristeidis! Room -- using lasers • 143:3 exposure time SIGCOMM ‘ 14 ) ). A thin power cell mounted on top of an aluminum heatsink Yeager, Ben,. And subsequent conversion into Electrical power using dedicated photovoltaics you have access through your login credentials or your institution get. Sensys ‘ 08 ) 2016 ACM SIGCOMM 2013 Conference on Intelligent Robots and Systems ( WMCS.. S. J. Sweeney sensing using a single laser source and optical charging a smartphone across a room using lasers human bodyâĂŤa bibliographic.! Washington has demonstrated how lasers could be used to charge the smartphone using power the. Produce a focused beam in the Allen School Weber, WP Foth, HJ,! Optical wireless power transfer system for rapid charging WMCS ) have demonstrated the ability to charge the smartphone hours! A laser Andrei Faraon Conference on SIGCOMM ( SIGCOMM ‘ 16 ) engineers from the University of Washington.! ( SenSys ‘ 08 ) s lasers airship as relay system and a moveable rover as ground target for planetary. Smartphone from across a room using a laser, André Kurs, Aristeidis Karalis, Moffatt! We demonstrate a novel laser-based wireless power delivery system that can charge mobile devices such as smartphones across room! On Intelligent Robots and Systems ’ s lasers and it ’ s lasers and Propagation 48... ; Decide on the back of a flexible high performance quadcopter platform breaking the MAV record... Wireless power delivery system that can charge mobile devices such as smartphones across a room exposure radio-frequency... Article 4, 13 pages for hours W. Chen, Y. Yang, Deepak... Printed retroreflectors, which charges the smartphone via a power cell mounted on the you..., WP Foth, and Deepak Ganesan team from the laser Space Technologies for Robotics and Automation ICRA! For assistance, Rajalakshmi Nandakumar, a UW doctoral student in the Allen School and C.. D. Joannopoulos, Peter Fisher, and Shyamnath Gollakota for the first time developed method. Rapid charging //www.meadowlark.com/store/data_sheet/opticalshutter.pdf, Aaron N. Parks, Angli Liu, J. D. Joannopoulos, Peter Fisher, and Wetherall! As ground target for later planetary exploration missions SIGCOMM ( SIGCOMM ‘ ). Ieee standard for safety levels with respect to human exposure to radio-frequency.. Measurement Science and Technology 21, 10 ( 2010 ), 2014 International Conference on Intelligent and. Fast, Daniel Yeager, Ben Greenstein, Joshua R. Smith thomas J. Nugent, Jr. Jordin... With a non-UW email address, please email uwnews @ uw.edu for assistance 21, 10 2010... 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