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. 1--4. https://doi.org/10.1109/WMCaS.2013.6563551, A. Sahai and D. Graham. In Proceedings of the 2016 ACM SIGCOMM Conference (SIGCOMM ‘16). Laser power for UAVs. Standard. But engineers at the University of Washington have for the first time developed a method to safely charge a smartphone wirelessly using a laser. (2017). In Solar Power from Space-SPS‘04, Vol. 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. International Electrotechnical Commission. “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. ... the back of a smartphone and hit it with a narrow laser … Co-author is Rajalakshmi Nandakumar, a UW doctoral student in the Allen School. 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. 2011. 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. (2017). 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. Engineers at the University of Washington have developed a method to safely charge a smartphone wirelessly — using a laser. The charging beam is generated by a laser emitter that the team configured to produce a focused beam in the near-infrared spectrum. Advanced Thermal Solutions. Hyeonseok Lee, Hyun-Jun Park, Hoon Sohn, and Il-Bum Kwon. Rev. Share . 195. The generator is mounted on top of an aluminum heatsink. 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. In 2011 IEEE/RSJ International Conference on Intelligent Robots and Systems. Charging laser and guard lasers are normally invisible, but they have been inserted. If you forgot your charger today, engineers from the University of Washington have a solution for you — and it’s lasers. Researchers installed a skinny vigor phone to the returned of a smartphone, which costs the smartphone the use of power from the laser … 2015. https://doi.org/10.1364/CLEO_SI.2014.STu3M.5. International Electrotechnical Commission. 2013. If you're trying to subscribe with a non-UW email address, please email uwnews@uw.edu for assistance. Information technology equipment âĂŞ Safety. In Proceedings of the 2016 CHI Conference on Human Factors in Computing Systems (CHI ‘16). Standard. 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. IEEE Antennas and Propagation Magazine 48, 1 (2006), 157--159. 2004. The research was funded by the National Science Foundation, the Alfred P. Sloan Foundation and Google Faculty Research Awards. Custom 3-D printed “retroreflectors” placed around the power cell on the smartphone reflect the guard beams back to photodiodes on the laser emitter. SPIE Laser Power Beaming II Proceedings (1995). High intensity laser power beaming architecture for space and terrestrial missions. The high-powered guard beam is emitted from the central port. Researchers mounted a thin power cell to the back of a smartphone, which charges the smartphone using power from the laser. 2016. ACM, New York, NY, USA, 1515--1525. https://doi.org/10.1145/2858036.2858580. 4. https://www.digikey.com/product-detail/en/advanced-thermal-solutions-inc/ATS-60000-C1-R0/ATS1376-ND/1285090, Sony. ACM, New York, NY, USA, Article 4, 13 pages. 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. Communication hardware, interfaces and storage. A focused near-infrared beam, which can extend up to 40 feet, delivers … ACM, New York, NY, USA, 393--394. https://doi.org/10.1145/1460412.1460468, Matthew J. Chabalko, Mohsen Shahmohammadi, and Alanson P. Sample. Planar Retroreflector, In CLEO: 2014. Optical wireless power transmission at long wavelengths. Charging a Smartphone Across a Room Using Lasers • 143:3 exposure time. (Shanghai) Co. 2001. 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. Engineering | News releases | Research | Science. Thomas J. Nugent, Jr. and Jordin T. Kare. 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. Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies, M. C. Achtelik, J. Stumpf, D. Gurdan, and K. M. Doth. In 8th ESA Workshop on Advanced Space Technologies for Robotics and Automation. https://doi.org/10.1145/2716281.2836089, Wibotic. © 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. The wireless charging system created by University of Washington engineers. 1--10. 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. Efficient wireless power transfer using underground relay coils. Science 317, 5834 (2007), 83--86. https://doi.org/10.1126/science.1143254 arXiv:http://science.sciencemag.org/content/317/5834/83.full.pdf. 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. 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. [n. d.]. Effects of ultrasonic noise on the human bodyâĂŤa bibliographic review. (2015). 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. http://www.meadowlark.com/store/data_sheet/opticalshutter.pdf, Aaron N. Parks, Angli Liu, Shyamnath Gollakota, and Joshua R. Smith. 2000. https://images-na.ssl-images-amazon.com/images/I/714s6fjypPS.pdf. Using a laser to wirelessly charge a smartphone safely across a room. Check if you have access through your login credentials or your institution to get full access on this article. University of Washington, Seattle, WA, USA. 1995. Powering the Next Billion Devices with Wi-fi. The ACM Digital Library is published by the Association for Computing Machinery. How Stock Exchange works; Decide on the Impression You Want to Give – Self Branding…. (2004). 2017. Engineers at the University of Washington have for the first time developed a method to safely charge a smartphone wirelessly using a laser. IEC 60950-1 (2005) 2005. Taysir Nayfeh, Brian Fast, Daniel Raible, Dragos Dinca, Nick Tollis, and Andrew Jalics. 2017. 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. A new IEEE standard for safety levels with respect to human exposure to radio-frequency radiation. 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. Charging Unplugged: Will Distributed Laser Charging for Mobile Wireless Power Transfer Work? MTP2955. The wireless charging system created by University of Washington engineers. In Robotics and Automation (ICRA), 2012 IEEE International Conference on. Power Beaming for Space-Based Electricity on Earth: Near-Term Experiments with Radars, Lasers and Satellites. IEEE, 1--5. USB 2.0 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. TEC1-12706. Researchers from the University of Washington have devised a new way to charge a smartphone from across the room using lasers. Tweet. 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 … 2017. 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. New wireless charging tech juices your phone from across the room using lasers Engineers at the University of Washington have developed a technique for charging your phone from across the room -- using lasers. IEEE, 2660--2665. 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. 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 http://energous.com/, USB Implementers Forum. DOD and Navy applications for laser power beaming. A team from the University of Washington has demonstrated how lasers could be used to charge a device from across the room. The entire assembly is only 8mm thick and 40mm wide.Mark Stone/University of Washington. Towards Autonomously-Powered CRFIDs. We use cookies to ensure that we give you the best experience on our website. Forget today's pad-based regular wireless charging! Four low-powered guard beams are emitted from ports surrounding the guard beam. Measurement Science and Technology 21, 10 (2010), 105207. 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! 2009. PDB-C156. Yunxin Liu, Zhen Qin, and Chunshui Zhao. “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. 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