Warren: The popularity of running is really taking off with women in particular. Women now account for the majority of entrants in competitive races, clocking in at 57 percent, according to RunningUSA. That’s millions of women, and I want to reach all of them! Warren: I would love to start a podcast and explore the possibility of live events. I think the best way for a brand to grow and evolve is to foster an ongoing conversation with its audience. Building a strong and engaged community of readers helps to drive the brand forward and inform its content choices, and this is a core focus for me in the next year. Warren: Our biggest challenge is the same one that every media company faces: finding the best way to connect with our audience. The constantly evolving digital landscape means publishers have to remain vigilant about new technologies and agile about responding to how consumers want to receive content. Warren: Jessie has built a phenomenal brand, and I want to carry on the work that she has done by increasing brand awareness for readers as well as for advertisers and content partners. My experience customizing and localizing content across multiple platforms for various publishing and brand partnerships and my role as a brand spokesperson will be beneficial in achieving these goals. Last month, Competitor Group tapped Lonely Planet managing editor Rebecca Warren to do just that. Folio: sat down with Warren to learn a little more about her background and plans for the title going forward. With America in the midst of a “running boom” — 17 million people ran a race in the U.S. last year, 57 percent of them females — suffice it to say that her successor has some big sneakers to fill. Folio: What do you see as some of your biggest growth opportunities for the brand? Over her seven-year tenure as editor-in-chief of Women’s Running — prior to being promoted, earlier this year, to VP of Media for parent company Competitor Group Inc. — Jessica Sebor garnered deserved applause for repositioning the monthly title as not just a fitness magazine, but an advocate for inclusion, empowerment, and positivity. Covers that once almost exclusively featured models jogging in sports bras and taglines teasing 24-hour diets and shortcuts to flat abs have given way to women of all body types, who encourage readers with messages like “Love yourself,” “Dream big,” and “Feel great.” In the past year alone, Women’s Running cover stars have included a wheelchair track and field star, a transgender woman, and a runner wearing a hijab. Folio: What about some challenges? Sebor’s impact has been felt on the business side too, where digital traffic has more then doubled in the last two years to over one million monthly visitors, while print circulation holds steady at around 45,000 copies per issue. Warren: Yes, we have a strong base of readers who subscribe to the print magazine and that remains a priority for me. Industry-wide, the dwell time with a print article is much greater than with a digital one, and it also offers a chance to have a focused, tactile interaction with the reader. The value of being able to engage with an article without a text message or alert popping up during your reading time can’t be overstated. Increasing our presence at races, through partnerships and brand ambassadors, is one way to do that. I also want to hone our social media strategy to give people a consistent and focused brand message across all of our content channels. We have a website redesign in the works as well, and my focus will be bringing a cohesive look and message across all of our content hubs. I’d also like to explore the possibility of retail partnerships and direct-to-consumer services. The fact that running is a low-barrier, widely accessible sport was also appealing. There is a broad audience available for women-specific running content, and that is an exciting opportunity. Rebecca Warren: I love what the brand stands for: inspiring and empowering women to live healthy, fulfilled lives. Women’s Running offers readers a holistic approach to wellness, focusing on running as a gateway to healthy living, by promoting positive body images, balanced nutrition, and practical and achievable fitness goals. Folio: Obviously the brand is seeing a lot of growth on the digital and social media side. Do you expect the print magazine to remain a priority going forward? Folio: Any other opportunities for expanding the WR brand? Rebecca Warren Folio: What first attracted you to the editor-in-chief role at Women’s Running? Folio: What do you bring to the position that will help you pick up where Jessie [Sebor] left off?
The country’s youth have several reasons to cheer about the Budget, with Finance Minister Arun Jaitley sticking to Narendra Modi’s ambition of galvanising the large demographic group to push development of the country. India is said to have one of the largest youth population in the world, with two-thirds Indians below the age of 35 years.The Union Budget holds several schemes and promises that look set to bring the country’s youth to take charge in the future.From offering them skills training and giving them incentives to start businesses, to setting up sports facilities and premier educational institutes, the government’s Budget looks to capitalise on this age group.Skill India Programme: This national multi-skill programme announced by the government on Thursday is meant to train the youth in several professional skills. With an emphasis on employability and entrepreneurial skills, the government has set aside ₹100 crores for this programme. It will also provide training and support for traditional professions like that of welders, carpenters, cobblers, masons, blacksmiths, and weavers.Young Leaders Programme: “The youth of India are pragmatic, forward-looking and wish to be leaders in all fields. In order to promote leadership skills, I propose to set up Young Leaders Programme with an initial allocation of ₹100 crore,” the finance minister announced on Thursday. Jaitley allotted another ₹100 crore to promote village youth to take up entrepreneurship.Facilitating jobs: Jaitley said the government would work towards converting employment exchanges set up under the Employment Exchanges (Compulsory Notification of Vacancies) Act, 1959 that primarily offer information on availability of jobs into career centres, where the youth will also be offered counselling on selecting jobs based on their aptitude and skills.₹10,000 crore assistance for start-ups – In order to help entrepreneurial youth in the country to start up their own businesses, the government has set aside a ₹10,000 crore fund to provide venture capital for the micro, small and medium enterprises. It also announced ₹200 crore for establishing a technology centre network to promote innovation and entrepreneurship.Five more IITs, IIMs: The Modi government has decided to take the number of IITs and IIMs, the most premier institutions in the country, up to 21 and 18 respectively. The government also announced that four medical instutions on the lines of AIIMS (All India Institute of Medical Sciences) will be set up in the country.National-level Sports Academies: The current state of sports in the country is much below the international standard, and the focus of the government was to ensure the youth of the country get good sports facilities. The government has assured that academies with international-level facilities for training of accomplished athletes and for nurturing talent at junior and sub-junior level will be set up for shooting, archery, boxing, wrestling, weightlifting and various track and field events. Jaitley also announced ₹200 crore for upgrading the indoor and outdoor sports stadiums in Jammu and in Kashmir Valley to international standards.Sports University: The government has allotted ₹100 crore to set up a national sports university at Manipal.Amendment to Apprenticeship Act: Jaitley promised that the Apprenticeship Act will be suitably amended to meet the current needs of the industry as well as the youth. “Comparing the size of the Indian economy, the performance of the Apprenticeship Training Scheme is not satisfactory and a large number of training facilities in the industry are unutilised,” he said during his speech.
The Indian government’s drive against black money to get back ill-gotten wealth stashed away by its citizens abroad has drawn responses from 638 declarants for total assets worth Rs 3,770 crore ($580 million), an official statement said on Thursday.The amnesty scheme ended on September 30. It called for a tax of 30% and an equal amount in penalty, which is to be paid before December 31. The compliance window had opened on July 1.The official statement said the actual quantum of declaration, under what is called the Black Money (Undisclosed Foreign Income and Assets) and Imposition of Tax Act, 2015, was subject to a final reconcilitaion.India has no official estimate about the quantum of black money stashed away by Indians abroad but unofficial estimates put the sum somewhere between $466 billion and $1.4 trillion.Even if the lowest estimate of $466 billion stashed away is taken into consideration, the amount declared as part of the drive is barely 1% of it.- With IANS inputs
Disha Patani in Bharat as a trapeze artist.InstagramEver since the makers of Bharat released the trailer, the glimpses of slow motion song had built curiosity among the audience. Now that the film has hit the screens, the audience is going gaga over the whistleblowing performance of Disha Patani during the much-awaited performance.Disha took to her social media and shared the insights to the live reaction of the audience in the theatres captioning, “Thank you for your immense love #bharat”As soon as Disha makes an impressive entry in the film, the audience start hooting and when the Slow motion song begins the people start enjoying it so much that they do no’t hesitate to get up on their seats and start dancing while blowing whistles. The slow-motion fever is gripping the nation and the actress feels surreal watching people enjoy her work. Close The audience goes gaga over the whistle-blowing performance of Disha Patani as ‘Bharat’ hits the screens Bharat is Disha’s third film in the row which has minted Rs 42.3 crore on the first day itself. The actress’ debut film M.S. Dhoni: The Untold Story and her second film Baaghi 2 were box office hits.When it comes to dancing, the actress is an absolute stunner with graceful and effortless moves. Disha has been treating the fans with insights to her dance rehearsals and now with Slow Motion song, it is a treat for the audience.After the back to back success of M.S. Dhoni -An Untold Story and Baaghi 2, which raked more than Rs 100 crore at the box office, Disha’s film Bharat has hit the screens across the country. The actress will also be seen alongside Aditya Roy Kapoor in Malang.
Arthur made the startling claim in the post-match press conferenceIAN KINGTON/AFP/Getty ImagesPakistan’s coach Mickey Arthur is known for being passionate and emotional. His thoughts are rather transparent when Pakistan is on the field thanks to his highly-expressive body language. It is no wonder therefore, that he seemed as affected by all the shrill criticism coming the way of his team as the players would have been.Arthur was the man who turned up for the post-match press conference after his team’s triumph over South Africa. He lambasted the critics who had been targeting his team and said the players were very badly affected by all the poison being spewed.But there was one revelation about the effect of this negativity in the media on himself that, though made as a casual aside, was rather shocking. While answering a question about the South African team and explaining the difficulties faced by a side going through a tough phase, the South African coach of Pakistan said: “It happens so quickly, you lose a game, you lose another game, it’s a World Cup, the media scrutiny, public expectations, and then, you almost go into survival mode. I mean, we’ve all been there. Last Sunday, I wanted to commit suicide.”Mickey Arthur “last Sunday I wanted to commit suicide” #CWC19 pic.twitter.com/Xkb3IgD0QS— Saj Sadiq (@Saj_PakPassion) June 24, 2019TwitterThe part about wanting to commit suicide should scare everyone. It is very possible that Arthur was not fully serious when he said this. Maybe, it was an exaggeration. But the fact that he even mentioned this is an indicator of the extreme pressure that must have been on him after the disaster against India.This is also an important lesson for critics. Yes, when the team performs badly, there is a need to point out the errors, but sometimes, the words are so poisonous, they can have a much more serious impact on players and support staff than a loss in a game should occasion. Hopefully, Pakistani media would learn from this experience.
Reliance Jio launches free 4G feature phone aka ‘JioPhone’ with unlimited voice, dataRIL AGM via YouTubeMukesh Ambani’s Reliance Jio has seen phenomenal growth over the last two years. After disrupting the telecom market with its cheap plans, the company is now eyeing the lucrative entertainment industry with plans to set up its own production house.The news comes from an unnamed source, who told Livemint: “Content market is still not properly tapped… Reliance has hired a bunch of scriptwriters and content creators and is in the process of setting up a huge production house.”If the report is accurate, it would mean that the company will create its own web series and short film taking on Netflix and Amazon’s over-the-top (OTT) services. The conglomerate will be banking on its 215 million subscribers to ensure the service is well received, and with plans to roll out JioGigaFiber, that number will only be higher.Currently, Jio offers video content in partnership with third-parties such as ALT Balaji, Eros and Reliance-owned Viacom through its Jio Cinema app.At a shareholder meeting recently, RIL chairman Mukesh Ambani said that video consumption has grown from 165 crore hours per month to 340 crore hours per month. The rise in part is due to the lowering cost of data plans, that Jio introduced when it entered the market.The report said that the content ecosystem business is being spearheaded by Jyoti Deshpande, former managing director at Eros. She has joined Reliance as head of the media and entertainment business. The source went on to add that Reliance has already got 20-25 creative people on board, and is targeting launch within 4-6 months of some web series. RIL has been aggressively expanding its presence in the OTT space, having purchased 24.9 percent stake in Balaji Telefilms last year, and 5 percent stake in Eros International in February this year. Earlier, Jio and Hotstar partnered up to offer JioTV to users. Reliance also owns Viacom18, which has a wide variety of entertainment channels such as Colors and MTV. Sacred Games posterTwitterWhile Jio’s entry into the content space is unlikely to shake up Netflix and Amazon’s dominance in the short run, it will have massive implications in the long run despite both companies investing heavily in Indian content. The news will also be good news for budding artists, who are looking for a big break and now have more options to chose from.
mirza fakhrul islam alamgirBangladesh Nationalist Party (BNP) on Monday opposed the decision of Bangladesh and Myanmar to form a joint working group to start the repatriation process of all the Rohingyas staying in Bangladesh, saying it is an uncertain process to resolve the crisis, reports UNB.”The formation of a joint working group is an uncertain process to resolve the issue. Such a decision has manifested that the government is going to fail to have a quick solution to the Rohingya crisis. It’s also failed to make the international community understand the dangerous situation Bangladesh is now facing,” said BNP secretary general Mirza Fakhrul Islam Alamgir.Speaking at a documentary screening programme, the BNP leader renewed their party’s call for forging a national unity to overcome the Rohingya crisis.”We’ve long been talking about forming a national unity to face the challenge. Unfortunately, the government is not paying any heed to it as its policy is to divide the nation.”He urged the government to call a national convention to forge the unity and take steps to send an all-party delegation to different countries to push for resolving the problem.Jatiyatabadi Samajik Sangskritik Sangstha (Jasas) screened the documentary at Kendrio Kochi Kachar Mela auditorium on the plight of Rohingyas and repression on them.Earlier at a meeting of officials of the Bangladesh and Myanmar at the state guesthouse Padma, the two countries agreed to form a joint working group to start the repatriation process of all the Rohingyas living in Bangladesh, which Dhaka sees as a “progress.””It’ll soon be formed and I’m hopeful (about a solution),” Foreign Minister AH Mahmood Ali told reporters in the afternoon mentioning that Myanmar came up with the proposal of repatriation of the Rohingyas.He, however, said the composition of the joint working group will be finalised later. “We’ll give our names from our side while they’ll give their names [for the joint working group].”Fakhrul said the government has failed to portrait the Rohingya crisis and genocide against them by the Myanmar authorities before the international community.”People of Bangladesh have come under an attack through the problem. The government has failed to convince the international community how humanity, and Bangladesh’s independence, sovereignty, economy, environment and society have been affected by the Rohingya crisis.”He also criticised the government for not sending any high-profile delegation to any country and for not intensifying its diplomatic efforts to get influential countries’ support to resolve the Rohingya crisis.He also urged the country’s people to get united to drum up a strong public opinion across the country and abroad to stop persecution on Rohingyas and force the Myanmar authorities to take back their citizens ensuring their rights, citizenship and dignity.
A child was killed and ten others injured as a bus collided head-on with a truck in Buraburi area on the Panchagarh-Tetulia highway on Tuesday, reports UNB.The deceased is Limon, son of Belal Hossain resident of Khutaganj village of Shalbahan union. He was only three and half years of old.Among the injured, freedom fighter Hasan Ali Mia, 75, Khalek, 28, bus driver Reza, 38, truck driver Saddam, 30, Ripon, 20, Zakir, 35, and Khabirul, 40 were rushed to Rangpur Medical College Hospital.The accident took place when a Panchagarh-bound bus of
Supporters of Honduran presidential candidate for the Opposition Alliance against the Dictatorship coalition Salvador Nasralla, clash with security forces during protests demanding the final results of the weekend’s presidential election, in Tegucigalpa on Friday. Photo: AFPThe Honduran government declared a state of emergency late Friday and imposed a 10-day curfew in an attempt to stop violent demonstrations across the country triggered by claims of presidential election fraud.Police said at least two officers and 12 civilians were injured, some by gunfire, after clashes in several parts of the country between riot police and opposition supporters.The violence was sparked by opposition candidate Salvador Nasralla claiming election fraud and calling his supporters onto the streets.An executive decree issued by President Juan Orlando Hernandez, who is seeking re-election despite a constitutional ban on a second term, imposes a nighttime curfew from 6:00 pm to 6:00 am.Representatives of the country’s Supreme Electoral Tribunal (TSE) and political parties, national and international observers and journalists accredited to cover the elections are exempt.Thousands of Nasralla supporters blocked roads across the country, and footage of their confrontations with the police-who attempted to disperse demonstrators with tear gas-went viral on social media.In the capital Tegucigalpa, protesters lit bonfires of sticks and tires on boulevards and on exit routes.The unrest sparked panic, with people rushing to supermarkets and gas stations to stock up, fearing the riots would prevent them from leaving their homes.Shops closed by the afternoon and some international flights were suspended at the capital’s airport.Cliffhanger voteWith nearly 95 percent of the ballots counted from last week’s vote, Hernandez had a razor-thin lead of 42.92 percent over Nasralla’s 41.42 percent.TSE president David Matamoros postponed until Saturday a special count-with officials from both camps present-to review ballots with inconsistencies, blurs and other errors before a result can be declared, following new demands from leftist leader and ex-president Manuel Zelaya.“Within three days, we will have the result. We accept to recognise the final result if they accept these points,” Zelaya said.But in an television interview, Nasralla demanded a full recount, warning of possible collusion between the TSE and the government.“Do not let them steal the presidency,” said activist Juan Barahona of Nasralla’s Alliance of Opposition Against the Dictatorship.Police said they had arrested 50 people for alleged looting between Thursday and Friday.Security forces said rioters had damaged businesses and vehicles, some of which had been doused in gasoline and set on fire.Earlier, Hernandez broadcast a statement calling for calm and predicting “we are going to do very well” in the vote.The Organization of American States observer mission urged the TSE in a letter Thursday to ensure that 100 percent of the ballots were processed before declaring a result.“Political parties should be given the opportunity to present challenges. These will have to be dealt with impartially and within a reasonable timeframe and following due process,” it said.“This is the only way to restore confidence in this election and in the integrity of the popular will.”
A court in Vietnam has handed out prison sentences to 15 protesters arrested during mass demonstrations last month against proposed special economic zones in the Southeast Asian country, state media reported on Tuesday.Despite sweeping reforms, communist-ruled Vietnam tolerates little dissent. The country’s constitution allows freedom of assembly, but protests are often broken up by police.At least 31 people have been jailed for taking part in the nationwide demonstrations, triggered by fears that investors from China would dominate the 99-year land leases up for development in the zones.In a trial which ended late on Monday, the People’s Court of Bien Hoa City, in the south of the country, sentenced the protesters to between eight to 18 months in prison.Five others were given 12- to 14-months probation on charges of “causing public disorder”, Voice of Vietnam Radio said.They were arrested when taking to the streets on 10 June and “caused traffic jams”, the report cited the indictment as saying.Their lawyers were not immediately available for comment.Earlier this month, 16 people were jailed under identical charges in Binh Thuan province. June’s protests had turned violent in the province, with protesters hurling bricks and petrol bombs at police.Monday’s trial came less than two weeks after a court in Ho Chi Minh City ordered the release and deportation of William Anh Nguyen, 32, an American man of Vietnamese descent who was also arrested for “causing public disorder” during the protests.”They have done nothing wrong,” Nguyen wrote on his twitter account after Monday’s sentencing. “The fight for justice and democracy continues”.
HM ErshadHealth minister Zahid Malik on Monday evening said Jatiya Party chairman HM Ershad, now undergoing treatment at the Combined Military Hospital (CMH) in Dhaka, has been put on life support as his condition turned critical, according to UNB.Talking to newsmen after vising Ershad at the CMH, the minister said, “His (Ershad’s) condition can be described as critical. He is on life support, and the overall situation is critical.”He said all the possible treatment is being provided to Ershad at the CMH. “Everything now depends on the will of Allah. All should now pray for his recovery. The physicians said he is not in a condition that he could be sent abroad.”Zahid Malik added, “Ershad is being given the treatment that he is supposed to be provided abroad. His health condition doesn’t permit to take him abroad. So, there’s no plan to send him anywhere.”Mentioning that the Jatiya Party chairman’s condition is improving, Malik said he will recover if the trend of improvement continues. “If his condition deteriorates further, there’ll remain nothing to do.”Ershad’s younger brother and Jatiya Party acting chairman GM Quader and party secretary general Moshiur Rahman Ranga were present when the health minister was talking to the journalists.Earlier in the day, GM Quader urged all not to spread rumours over the health condition of his brother Ershad.Speaking at a press conference at Jatiya Party chairman’s Banani office around 1:00pm, he also said Ershad’s condition is stable and remains unchanged, but still not out of danger.Ershad, also the leader of the opposition in parliament, was admitted to the CMH on Wednesday morning as his condition deteriorated.The former military ruler has been suffering from various old age complications, including low haemoglobin and liver problem, high bilirubin and serious knee pain.
Listen Al OrtizImmigration lawyer Silvia Mintz (right) gave a lecture to cadets from the Houston Police Department when they visited the Denver Harbor Multi-Service Center, which is located in a part of Houston where many residents are immigrants from Latin American countries, as part of HPD’s diversity tour initiative.The quality of the training of police officers in Texas has been in the spotlight recently and incidents such as the arrest of Sandra Bland in Waller County last year and the shooting of Alva Braziel in Houston this past summer have raised questions about how law enforcement deals with diversity and de-escalation tactics.One of the measures the Houston Police Department has taken recently is a tour of the city to teach cadets about its diversity.The tour makes stops in African-American, Asian, Latino and Muslim neighborhoods.“We recruit nationwide and, so, many cadets don’t really understand the history of Houston and, so, we’ll take them out to Acres Homes, we’ll take them out to Meyerland, we’ll take them out to the Fifth Ward and community members will engage them and speak with them and then they’ll take the bus tour and kind of get a cultural history of Houston,” explains Assistant Chief Charlie Vazquez, who oversees the Professional Development Command at HPD.Vazquez says learning about Houston’s diversity is useful for the cadets because they are introduced to members of the community who can help them establish trust in the groups they will be working with and that is a trust that eventually should lead to more effective policing.Cadet Egla Flores says the tour allows trainees to learn small details that will help them when they interact with the public.She gives an example of something she learned at the Islamic Society of Greater Houston when she took the tour.“If we try to shake the woman’s hand they probably wouldn’t shake our hand, they would place their hands over their chest. It’s just little things that we learn from different communities,” Flores notes.But Houston is not the only city where police officers learn about diversity.The Texas Commission on Law Enforcement requires that diversity and multiculturalism are part of the curriculum used for the basic training all police officers go through in the state.The courses are a reflection of the changing demographics in the United States because of the growth of minorities and they also teach why police officers must avoid racial profiling.There is also a class on basic Spanish due to the large Latino population of Texas.“My sense is that minimal requirements for understanding diverse peoples are probably being met adequately across the board,” comments Phillip Lyons, dean at the Criminal Justice College of Sam Houston State University.Lyons also thinks initiatives like HPD’s diversity course represent an added value for the training of its future officers.In addition to diversity, the concept of de-escalation has also become an increasingly important component of the training through the years.“I think the actions of the police have come under heightened scrutiny as it relates to how we deal with folks who have mental health problems or who are in crisis and, as a result of that, there is more attention given to training,” Lyons adds.Some of the tools police officers are instructed to use to de-escalate tense situations are prioritizing self-control and not behaving in an aggressive or condescending way, but paying attention to the nuances of non-verbal communication for certain communities can also be important.For example, officers are taught that some Latinos may prefer not to make eye contact not because they are lying, but because it is the way they show respect.Knowing how to work around personal space is relevant as well.Officer C.K. Traxler, who works for the Pasadena Police Department and teaches crisis intervention, explains that they teach cadets and police officers who go through training “to look for signs of stress in the person as you are approaching and if you see their stress level going up, you stop at that point or maybe even back up a little bit to reduce the stress that they’re already feeling.”Police officers frequently conduct traffic stops, which can present situations that turn confrontational and those are situations in which the training is useful.The protocol for police officers is that they must always say what is the reason for the stop and allow the driver to give an explanation for the traffic violation the officer deems he or she has committed, which can lower the stress of the situation. 00:00 /04:07 X To embed this piece of audio in your site, please use this code: Share
Explore further Working principle of a thermoelectric generator. Credit: (c) Nature, VOL 508, 327 As the planet continues to experience the impact of global warming, scientists around the world frantically pursue alternate ways to produce electricity—one such possibility is to convert waste heat from industrial process into electricity. To make that happen, a thermoelectric generator must be constructed and used. Such generators operate by taking advantage of differences in temperature experienced by a single material. Two thermoelectric semiconductors are exposed to a temperature gradient and are connected together by conducting plates. Thus far, however, the process has not proved to be efficient enough to warrant the expense of building and using such generators, despite doubling in efficiency over just the past fifteen years—from zT 1 to 2.The increase in efficiency has been due mostly to research work involving nanotechnology, and the materials used have generally been based on lead telluride. The difficulty in finding better materials has been stymied by the dual properties required: low thermal conductivity and high electrical conduction. SnSe has been used by scientists for a variety of purposes, but due to its stiff bonds and distorted lattice was not really considered as a possibility. But that was because others had not taken into account the compound’s low anharmonicity. When the team at Northwestern tested it as a possible material for use in a thermoelectric generator they found it had the highest zT ever found, 2.6. © 2014 Phys.org More information: Ultralow thermal conductivity and high thermoelectric figure of merit in SnSe crystals, Nature 508, 373–377 (17 April 2014) DOI: 10.1038/nature13184AbstractThe thermoelectric effect enables direct and reversible conversion between thermal and electrical energy, and provides a viable route for power generation from waste heat. The efficiency of thermoelectric materials is dictated by the dimensionless figure of merit, ZT (where Z is the figure of merit and T is absolute temperature), which governs the Carnot efficiency for heat conversion. Enhancements above the generally high threshold value of 2.5 have important implications for commercial deployment1, 2, especially for compounds free of Pb and Te. Here we report an unprecedented ZT of 2.6 ± 0.3 at 923 K, realized in SnSe single crystals measured along the b axis of the room-temperature orthorhombic unit cell. This material also shows a high ZT of 2.3 ± 0.3 along the c axis but a significantly reduced ZT of 0.8 ± 0.2 along the a axis. We attribute the remarkably high ZT along the b axis to the intrinsically ultralow lattice thermal conductivity in SnSe. The layered structure of SnSe derives from a distorted rock-salt structure, and features anomalously high Grüneisen parameters, which reflect the anharmonic and anisotropic bonding. We attribute the exceptionally low lattice thermal conductivity (0.23 ± 0.03 W m−1 K−1 at 973 K) in SnSe to the anharmonicity. These findings highlight alternative strategies to nanostructuring for achieving high thermoelectric performance.Press release (Phys.org) —A team of researchers working at Northwestern University has found that tin selenide (SnSe) has the highest Carnot efficiency for a thermoelectric cycle ever found, making it potentially a possible material for use in generating electricity from waste heat. In their paper published in the journal Nature, the team describes work they’ve conducted on SnSe and how their discovery might lead to even more efficient materials. Joseph Heremans gives a short history of thermoelectric research in a News & Views companion piece and offers some insights into why SnSe might be so efficient and how it might lead the way to the discovery of even better materials. SnSe is the world’s least thermally conductive crystalline material. Heat cannot travel well through this material because of its very “soft”, accordion-like layered structure which does not transmit vibrations well. It reminds us of the TV commercial for posture-pedic mattress where one can jump up and down on one side of the mattress and a few feet away a glass of wine does not feel the vibrations. By analogy SnSe can get hot on one side and the other side remains cool. The cool side does not feel the vibrations (also known as phonons). In SnSe this means that all heat must go to the other side of the crystal “riding” on the electronic carriers, not lattice vibrations. Thus, the hot carriers can generate useful electricity during their transport. That is enabled by the high thermoelectric power of SnSe. The poor ability to carry heat through its lattice enables the resulting record high thermoelectric conversion efficiency. Credit: Lidong Zhao The increase in efficiency is clearly welcome, but is still not enough to revolutionize the field—what might would be the discovery of another material with an even higher efficiency—something that might be similar to SnSe. Journal information: Nature Thermoelectric materials can be much more efficient Citation: Researchers find tin selenide shows promise for efficiently converting waste heat into electrical energy (2014, April 17) retrieved 18 August 2019 from https://phys.org/news/2014-04-tin-selenide-efficiently-electrical-energy.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.