2020 Kia Telluride review: Kia’s new SUV has big style and bigger value 2020 Hyundai Palisade review: Posh enough to make Genesis jealous Enlarge ImageHopefully you can detach it — and not be forced into paying for a replacement — if the tire goes flat. Sumitomo If you’ve ever wondered how your tire pressure continues to power itself, there’s no magic kinetic witchcraft happening in your tires — they just have batteries and strive to use as little power as possible. But in the future, swapping out a depleted tire-pressure sensor may become a thing of the past.Falken Tires announced last week that its parent company, Sumitomo, has developed a clever “energy harvester” that can produce power from frictional charging, best known as static electricity. It’s not quite ready for prime time yet, but it just cleared a big hurdle that could bring its benefits to automobiles at some point in the future.Inside Sumitomo’s energy harvester are two layers of rubber. Each is covered with an electrode and a film. As the tire rolls and deforms, the negatively charged film will interact with the positively charged film on the other side. This generates a small bit of electricity that can go on to power… something.I say “something” because these harvesters won’t be creating enough energy to add miles of range to your EV. Instead, it’ll be used to provide a trickle of power to a system that only needs that much. Tire pressure monitors are a perfect candidate, as they’re already inside the tire and only need a little bit of juice. Sumitomo says that other devices can also benefit, but didn’t dive into specifics.These little harvesters won’t be in your next set of tires, but things are moving along. The Japan Science and Technology Agency recently selected the project for additional research, which means Sumitomo will have some help with its R&D. Let’s just hope the harvesters don’t cost an arm and a leg each. Michelin shines spotlight on worn tire testing Michelin shines light on worn tire performance and testing 3:31 36 Photos More From Roadshow 2020 BMW M340i review: A dash of M makes everything better Share your voice Now playing: Watch this: 0 Post a comment Auto Tech Tags
Minor kidnapped and molested in Assam. Representational image.Getty ImagesIn yet another shocking incident, a minor girl in Hailakandi district of Assam was kidnapped and molested by two men. The incident was recorded on camera.A video has come out that shows a man molesting a girl, while another person recorded it on camera. According to reports, the 14-year-old girl was abducted by two men while she was on her way back from a Madrassa.The two men, who are reportedly known to the girl, allegedly took her to a deserted area, and molested her. The girl in the video can be seen screaming and trying to fight back, but the culprit refuses to let her go. He is even seen laughing on the camera while committing the heinous crime.The girl’s family has reportedly filed a case against the two men – identified as Ashique Uddin Majumdar and Rafiq Uddin Majumdar. The police are searching for the culprits but no arrests were made till this story was filed.A few days ago, another similar incident was reported from Hojai district of Assam where a minor was raped by five men, and the crime was recorded on camera. The video had gone viral on Whatsapp. While the victim did not tell anyone about the incident, a case was filed after her family came to know about the video. Soon after the FIR, police took action, and nabbed the culprits.
“Normally,” Stephenson continues, “voltage is applied to change the internal structure in ferroelectric materials. You can turn the crystal upside down from the internal point of view. We have shown, I think for the first time, that this can also be done chemically by changing the chemistry of the environment.” The results of the work, which includes scientists from Northern Illinois University and the University of Pennsylvania as well as Argonne, can be found in Physical Review Letters: “Reversible Chemical Switching of a Ferroelectric Film.”In order to test the process of chemical switching by changing the environment of the ferroelectric film, Stephenson and his colleagues varied the oxygen partial pressure. In situ x-ray scattering was used to “see” the changes in the polarization of the material. The specific ferroelectric material used for the experiment was lead titanate (PbTiO3). The group found that changing the oxygen pressure switched the polarization of the PbTiO3 film in much the same way as the conventional practice of using electrodes and voltage.The use of x-rays is important, since it allows scientists a peek at what is actually happening inside these materials. “The challenge has been to measure what is going on,” Stephenson admits. “With these thin films, external voltage measurements become more ambiguous. With our x-ray technique, we are able to watch the atomic-scale structure inside these systems.”“Up until now,” he continues, “we didn’t really think that the environment these ferroelectric materials were in could be just as important as the voltage applied. Fundamentally, we didn’t realize that extra oxygen or missing oxygen at the surface could produce an electric field big enough to affect properties.”This knowledge will become more important, Stephenson explains, as the demand for smaller devices made from new materials increases. Infrared and terahertz technology, controllable catalysts and chemistry applications on chips represent some of the areas that might benefit from a better knowledge of how switching works with PbTiO3 films. “Already there are ferroelectric materials used for non-volatile computer memory devices,” Stephenson points out. “But the holy grail of these is a memory element the size of an atom. As films get thinner, understanding the interfacial properties of these materials makes a difference. If the chemistry of the environment can change the polarization, we need to harness this to create new types of devices.”“The big picture is that we are trying to create new functional materials with interesting properties. We want to understand the way interfaces between different materials work. Ferroelectrics provide a model system where we can produce and measure large effects of the electric fields from the interfaces.”Additional information: Wang, et. al. “Reversible Chemical Switching of a Ferroelectric Film.” Physical Review Letters (2008). Available online: link.aps.org/doi/10.1103/PhysRevLett.102.047601 Copyright 2009 PhysOrg.com. All rights reserved. This material may not be published, broadcast, rewritten or redistributed in whole or part without the express written permission of PhysOrg.com. SLAC makes ‘electron camera,’ a world-class tool for ultrafast science, available to scientists worldwide Citation: Shocking: Environmental chemistry affects ferroelectric film polarity the same way electric voltage does (2009, February 2) retrieved 18 August 2019 from https://phys.org/news/2009-02-environmental-chemistry-affects-ferroelectric-polarity.html This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. (PhysOrg.com) — “Ferroelectric materials are interesting scientifically, and, while they are used for some things now, they are potentially useful for even more applications in the future,” Brian Stephenson tells PhysOrg.com. Stephenson is a scientist at Argonne National Laboratory in Argonne, Illinois. He has been working on a project to study chemical switching in a ferroelectric film. Explore further
Get set for an evening full of different genres of music. Teamwork is back with Friends Of Music (FOM), a series of musical get together. It is an initiative to revive the culture of enjoying a classic cocktail of good food and great music under moonlit evening with friends and family. Spend an evening with some old school blues, funky rhythm and blues, and soulful jazz music. Backed by rusty stringed guitars and harps, soothing saxophones and melodies that you will never forget. The young and talented Dhruv Vishwanath, Soul’d Out, and Big Bang Also Read – ‘Playing Jojo was emotionally exhausting’Blues wil entertain the audience with their performances. Visvanath is a multi-talented musician who began his musical journey at the age of eight. His percussive acoustic style is unique to the Indian subcontinent. He has pioneered a new style of playing guitar and has brought the genre to the forefront. He continues to write and compose music that communicates with the emotions of people. Lovingly known as Guitar Spanker, he uses the body of the guitar like a drum and sings simultaneously. Also Read – Leslie doing new comedy special with NetflixBig Bang Blues, influenced by genres of blues, rhythm and jazz, funk and rock, BBB brings a wide repertoire of music to the stage. The band drives its inspiration from the influences brought in together by its members who come from different backgrounds.Soul’d Out, whose music ranges over different genres aren’t really concerned about how its music is defined or categorised. All that matters to them is they have fun playing, which eventually entertains the audience.When: 25 April Where: Lodi- The Garden Restaurant Timing: 7.30 pm Ticket Price: Rs 350
Darjeeling: Rifleman Jiwan Gurung who was martyred in Kashmir was laid to rest with full military honours at Lower Lamahatta in Darjeeling. Thousands thronged to bid the brave heart a tearful farewell.Two explosions had taken place near Roopmati forward post in the Pukkharni area of Nowshera sector in Jammu and Kashmir’s Rajouri district at 4:35 pm and 6:10 pm on Friday. The twin explosions killed Major Shashidharan V Nair (33) and Rifleman Jiwan Gurung (24) along with injuring several others. Also Read – 3 injured, flight, train services hit as rains lash BengalThe IEDs are suspected to have been planted by militants from across the Line of Control. The 24-year-old Rifleman, Jiwan Gurung, hails from Lamahatta in Darjeeling. He had joined the Indian Army four years and 6 months ago. The news of his death was communicated to his family by the platoon commander of 2/1 Gorkha Regiment on Friday night. His mother Poonam Gurung went into a state of shock after hearing the news. His father Kiran Gurung is a government service holder in Arunachal Pradesh. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedKiran Gurung was present to receive the body of his son at Bagdogra Airport on Saturday. “My son is a true hero of India. He has made the supreme sacrifice for the motherland,” stated Kiran Gurung. Army top brass, Ex Servicemen, minister Goutam Deb; Administrative top brass including the District Magistrate of Darjeeling were present at Bagdogra Aiport on Saturday. “We mourn the death of the brave heart. The Chief Minister had called to pay homage on her behalf. It is indeed a very sad day for all of us,” stated Goutam Deb. From Bagdogra, the mortal remains were taken to his native village Singritam, Lower Lamahatta, by road.