This diagram shows researchers how electrical energy exists in a sample of Fe3Ga. Credit: 2020 Sakai et al
A thin, iron-based generator uses waste heat to provide small amounts of power.
Researchers have found a way to convert heat energy into electricity with a nontoxic material. The material is mostly iron which is extremely cheap given its relative abundance. A generator based on this material could power small devices such as remote sensors or wearable devices. The material can be thin so it could be shaped into various forms.
Theres no such thing as a free lunch, or free energy. But if your energy demands are low enough, say for example in the case of a small sensor of some kind, then there is a way to harness heat energy to supply your power without wires or batteries. Research Associate Akito Sakai and group members from his laboratory at the University of Tokyo Institute for Solid State Physics and Department of Physics, led by Professor Satoru Nakatsuji, and from the Department of Applied Physics, led by Professor Ryotaro Arita, have taken steps towards this goal with their innovative iron-based thermoelectric material.
Thermoelectric devices based on the anomalous Nernst effect (left) and the Seebeck effect (right). (V) represents the direction of current, (T) the temperature gradient and (M) the magnetic field. Credit: 2020 Sakai et al
So far, all the study on thermoelectric generation has focused on the established but limited Seebeck effect, said Nakatsuji. In contrast, we focused on a relatively less familiar phenomenon called the anomalous Nernst effect (ANE).
ANE produces a voltage perpendicular to the direction of a temperature gradient across the surface of a suitable material. The phenomenon could help simplify the design of thermoelectric generators and enhance their conversion efficiency if the right materials become more readily available.
A diagram to show the nodal web structure responsible for the anomalous Nernst effect. Credit: 2020 Sakai et al
We made a material that is 75 percent iron and 25 percent aluminum (Fe3Al) or gallium (Fe3Ga) by a process called doping, said Sakai. This significantly boosted ANE. We saw a twentyfold jump in voltage compared to undoped samples, which was exciting to see.
This is not the first time the team has demonstrated ANE, but previous experiments used materials less readily available and more expensive than iron. The attraction of this device is partly its low-cost and nontoxic constituents, but also the fact that it can be made in a thin-film form so that it can be molded to suit various applications.
The thin and flexible structures we can now create could harvest energy more efficiently than generators based on the Seebeck effect, explained Sakai. I hope our discovery can lead to thermoelectric technologies to power wearable devices, remote sensors in inaccessible places where batteries are impractical, and more.
Before recent times this kind of development in materials science would mainly come about from repeated iterations and refinements in experiments which were both time-consuming and expensive. But the team relied heavily on computational methods for numerical calculations effectively reducing time between the initial idea and proof of success.
Numerical calculations contributed greatly to our discovery; for example, high-speed automatic calculations helped us find suitable materials to test, said Nakatsuji. And first principles calculations based on quantum mechanics shortcut the process of analyzing electronic structures we call nodal webs which are crucial for our experiments.
Up until now this kind of numerical calculation was prohibitively difficult, said Arita. So we hope that not only our materials, but our computational techniques can be useful tools for others as well. We are all keen to one day see devices based on our discovery.
Reference: Iron-based binary ferromagnets for transverse thermoelectric conversion by Akito Sakai, Susumu Minami, Takashi Koretsune, Taishi Chen, Tomoya Higo, Yangming Wang, Takuya Nomoto, Motoaki Hirayama, Shinji Miwa, Daisuke Nishio-Hamane, Fumiyuki Ishii, Ryotaro Arita and Satoru Nakatsuji, 27 April 2020, Nature.DOI: 10.1038/s41586-020-2230-z
This work is partially supported by CREST (JPMJCR18T3), PRESTO (JPMJPR15N5), Japan Science and Technology Agency, by Grants-in-Aids for Scientific Research on Innovative Areas (JP15H05882 and JP15H05883) from the Ministry of Education, Culture, Sports, Science, and Technology of Japan, and by Grants-in-Aid for Scientific Research (JP16H02209, JP16H06345, JP19H00650) from the Japanese Society for the Promotion of Science (JSPS). The work for first-principles calculation was supported in part by JSPS Grant-in-Aid for Scientific Research on Innovative Areas (JP18H04481 and JP19H05825) and by MEXT as a social and scientific priority issue (Creation of new functional devices and high-performance materials to support next-generation industries) to be tackled by using post-K computer (hp180206 and hp190169).
Read the original post:
- Read Before Pontificating on Quantum Technology - War on the Rocks - July 13th, 2020
- The universe's clock might have bigger ticks than we imagine - Livescience.com - July 13th, 2020
- Testing Einstein's theory of relativity | OUPblog - OUPblog - July 13th, 2020
- Scientists Say This Is the Smallest Unit of Time That Could Exist - lintelligencer - July 13th, 2020
- Study: The Period of the Universe's Clock - lintelligencer - July 13th, 2020
- Book review: From Infinity to Man: The Fundamental Ideas of Kabbalah - The Jerusalem Post - July 8th, 2020
- Book review: Travels with Sushi in the Land of the Mind - The Jerusalem Post - July 8th, 2020
- WATCH: Follow along as this drag queen connects the dots between quantum physics and queer identity - Queerty - July 8th, 2020
- Raytheon Technologies to release second quarter results on July 28, 2020 - PRNewswire - July 8th, 2020
- A Brighter Tomorrow > News > USC Dornsife - USC Dornsife College of Letters, Arts and Sciences - July 8th, 2020
- The logic of the impossible: Moses our rabbi - The Jerusalem Post - July 8th, 2020
- Professor tackles one more mystery about quantum mechanics and times flow - GeekWire - July 5th, 2020
- Quantum fluctuations can jiggle objects on the human scale - MIT News - July 5th, 2020
- Want to Know the Speed of a Complex Nuclear Reaction? - Popular Mechanics - July 5th, 2020
- Try to consciously change the world it might just work - Sentinel & Enterprise - July 5th, 2020
- The Death of Fashion Shows? Not So Fast. | Tim's Take | BoF - The Business of Fashion - July 5th, 2020
- U of T and Hebrew University of Jerusalem launch research and innovation partnership - News@UofT - July 5th, 2020
- Max Planck Created Quantum Theory and Laid a New Foundation for Physics - Interesting Engineering - June 21st, 2020
- Do we need a 'Quantum Generation'? | TheHill - The Hill - June 21st, 2020
- 'Everything was centered around Sara, he was lost': Abhishek Kapoor on Sushant Singh Rajput after 'Kedarnath' - DNA India - June 21st, 2020
- RHOBH: What's with Denise Richards Husband Aaron Phypers? - Screen Rant - June 21st, 2020
- Restructuring cybersecurity with the power of quantum - TechRadar - June 21st, 2020
- In the atmosphere of Mars, a green glow offers scientists hints for future visits - NBCNews.com - June 21st, 2020
- Nano-motor of just 16 atoms runs at the boundary of quantum physics - New Atlas - June 20th, 2020
- Physics - The Period of the Universe's Clock - Physics - June 20th, 2020
- Why Gravity Is Not Like the Other Forces - Quanta Magazine - June 20th, 2020
- Toronto-based Association Quantum appoints Northern Hive PR - Business Up North - June 20th, 2020
- Physicists have proposed a new theory for Bose-Einstein condensates - Tech Explorist - June 20th, 2020
- Intricate Beauty, Quasiperiodic Structures, and the Cascade to Criticality - SciTechDaily - June 20th, 2020
- AI And The Parallel Universe - AI Daily - June 20th, 2020
- The stories a muon could tell - Symmetry magazine - June 20th, 2020
- Physicists Have Reversed Time on The Smallest Scale Using a Quantum Computer - ScienceAlert - June 13th, 2020
- Duckworth on Education: The Feynman Technique - EMSWorld - June 13th, 2020
- Sussex Uni physicist creates the fifth state of matter whilst working from home - The Tab - June 13th, 2020
- Beware of 'Theories of Everything' - Scientific American - June 13th, 2020
- Francesca Vidotto: The Quantum Properties of Space-Time - JSTOR Daily - June 1st, 2020
- What Is the Many-Worlds Theory of Quantum Mechanics? - The Wire - June 1st, 2020
- MIT Student Probing Reality Through Physics, Philosophy and Writing - SciTechDaily - June 1st, 2020
- An Indian Origin Physicist Created the Fifth State of Matter from Her Living Room - News18 - June 1st, 2020
- Science and the humanities in the time of pandemic: better together - The Irish Times - June 1st, 2020
- Quantum Physicist Invents Code to Achieve the Impossible - Interesting Engineering - May 24th, 2020
- What does the Tenet title mean? Quantum mechanics and Einsteins theory - Explica - May 24th, 2020
- Covid 19 Pandemic: Quantum Computing Technologies Market 2020, Share, Growth, Trends And Forecast To 2025 - 3rd Watch News - May 24th, 2020
- Scientists Create a Cluster of 15 Trillion Entangled Atoms for the First Time Ever - Dual Dove - May 24th, 2020
- Teaching the next generation of quantum scientists | Harvard John A. Paulson School of Engineering and Applied Sciences - Harvard School of... - May 23rd, 2020
- Nasa discovers parallel universe where time runs backwards? Know the truth - Business Standard - May 23rd, 2020
- Company Hopes to Have Carbon Nanotube COVID-19 Detector Available in June - SciTechDaily - May 23rd, 2020
- The world is not as real as we think. - Patheos - May 23rd, 2020
- Physicists Just Built The First Working Prototype Of A 'Quantum Radar' - ScienceAlert - May 19th, 2020
- Quantum Brakes to Learn About the Forces Within Molecules - SciTechDaily - May 19th, 2020
- Armin Strom Discusses Resonance With PhD Of Quantum Physics And Watch Collector In An Easy-To-Understand Way (Video) - Quill & Pad - May 19th, 2020
- Embedded in the community: Outstanding physics student is a third-generation ASU student - ASU Now - May 19th, 2020
- 50 Years of Physical Review B: Solid Hits in Condensed Matter Research - Physics - May 19th, 2020
- Exploring the quantum field, from the sun's core to the Big Bang - MIT News - May 14th, 2020
- Registration Open for Inaugural IEEE International Conference on Quantum Computing and Engineering (QCE20) - thepress.net - May 14th, 2020
- 3 Simple Reasons Why Wolfram's New 'Fundamental Theory' Is Not Yet Science - Forbes - May 14th, 2020
- The Era of Anomalies - Physics - May 14th, 2020
- Exploring new tools in string theory - Space.com - May 14th, 2020
- Probing reality through physics, philosophy, and writing - MIT News - May 14th, 2020
- Recent Research Answers the Future of Quantum Machine Learning on COVID-19 - Analytics Insight - May 11th, 2020
- OK, WTF Are Virtual Particles and Do They Actually Exist? - VICE - May 11th, 2020
- Is string theory worth it? - Space.com - May 11th, 2020
- Finding the right quantum materials - MIT News - May 11th, 2020
- Cliff's Edge -- The Past Hypothesis - Adventist Review - May 11th, 2020
- quantum mechanics | Definition, Development, & Equations ... - May 9th, 2020
- Physicists Criticize Stephen Wolfram's 'Theory of Everything' - Scientific American - May 9th, 2020
- Quantum Computing Market New Technology Innovations, Advancements and Global Development Analysis 2020 to 2025 - Cole of Duty - May 9th, 2020
- Physicist Brian Greene on learning to focus on the here and now - KCRW - May 9th, 2020
- Unified Field Theory: Einstein Failed, but What's the Future? - The Great Courses Daily News - May 9th, 2020
- A Discovery That Long Eluded Physicists: Superconductivity to the Edge - SciTechDaily - May 9th, 2020
- Why Self-Awareness and Communication Are Key for Self-Taught Players and Luthiers - Premier Guitar - May 9th, 2020
- Devs: Here's the real science behind the quantum computing TV show - New Scientist News - May 4th, 2020
- Raytheon Technologies CEO and CFO to present at the BofA Securities 2020 Transportation and Industrials Conference - PRNewswire - May 4th, 2020
- When quantum computing and AI collide - Raconteur - May 4th, 2020
- Wolfram Physics Project Seeks Theory Of Everything; Is It Revelation Or Overstatement? - Hackaday - May 4th, 2020
- The Cool Parts Show Reveals 3D Printing Reality and Potential - Modern Machine Shop - May 4th, 2020
- Caves elected to membership in the National Academy of Sciences - UNM Newsroom - May 4th, 2020
- Week of May 6 - Style Weekly - May 4th, 2020
- Nuclear Weapons Denied: How Hitler Failed to Even Get Close to the Bomb - The National Interest Online - May 4th, 2020
- New Theory of Everything Unites Quantum Mechanics with Relativity ... and Much More - Discover Magazine - April 24th, 2020