Kickstarter project team claims its LED bulb worlds most efficient

first_img(—Entrepreneurs Christian Yan, Tom Rodinger and Gimmy Chu have formed a partnership and created a company they call NanoLight. Their products are LED light bulbs that the group claims are the world’s most efficient. They are currently looking for backing on Kickstarter, the crowd funding site. Citation: Kickstarter project team claims its LED bulb world’s most efficient (2013, January 18) retrieved 18 August 2019 from The trio at NanoLight have come up with a unique way to deal with the heat that is produced when using strong LED’s, they’ve physically connected them to small circuit boards which dissipate the heat. The circuit boards are then cut to fit together, like a 3D jigsaw puzzle, to form a rough facsimile of an incandescent light bulb. Using this design, the team is offering three different types of bulbs. Explore further © 2013 LED replacements hit stores empty of 100W bulbscenter_img More information: and … gy-efficient-lightbu The first is listed as using 10 watts of power to produce what they say is the equivalent light output of a 75 watt incandescent bulb. The second consumes 12 watts and is claimed to produce the same light output as a 100 watt incandescent light bulb. The third option is apparently the same as the second except it produces more light. Because of heat sink issues, most large makers of LED bulbs aren’t offering bulbs that are supposed to be comparable to a 100 watt incandescent bulb, which might be a good selling point for the bulbs from NanoLight. Another selling point is the arrangement of the LEDs on the bulb – they allow for throwing light all over a room instead of in just one direction, as is the case with most current commercial options.The team has received pledges far in excess of their goal, so it looks like these new bulbs will soon make their way into homes where they will no doubt prove, or disprove the claims of their makers. 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. As most everyone is aware, traditional incandescent light bulbs are on their way out – they waste far too much energy. Instead, consumers have been urged to purchase Compact Florescent Lamps (CFLs), a smaller variant of the long thin light bulbs used in commercial buildings. Unfortunately, thus far, consumers have been less than impressed with the bulbs, both with the quality of the light they emit and the time lag between when they are turned on and when they achieve their maximum brightness. Because of that, research efforts have blossomed aimed at coming up with a new kind of bulb that can offer light quality as good as the old, but with far better efficiency. Most of that research has been focused on LED bulbs, which are now available to consumers, but at high cost and with ungainly metal heat sinks.last_img read more

ARM chip makers set to reach 3GHz next year

center_img 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. More information: … ssors-to-get-to-3ghz Citation: ARM chip makers set to reach 3GHz next year (2013, July 10) retrieved 18 August 2019 from

Scientists ask peer review on fast track at what price

center_img 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. , Nature © 2015 Journal team adds reviewer pay to open-access model A fast-track peer-review trial is in the news. A Nature Publishing Group (NPG) -owned journal’s editorial board member has resigned in protest over a pilot project where researchers pay for faster peer review. Mark Maslin, a professor at University College London, announced on Twitter earlier this month that he had resigned from the editorial advisory panel. He is bothered that the policy could create a divide between researchers who are poorly funded and their richer colleagues, both taking separate publishing routes. He said, “I think it is setting up a two-tier system.”last_img read more

Vacuum channel transistor combines best of semiconductors and vacuum tubes

first_img © 2017 (—Although vacuum tubes were the basic components of early electronic devices, by the 1970s they were almost entirely replaced by semiconductor transistors. But in the past few years, researchers have been developing “nanoscale vacuum channel transistors” (NVCTs) that combine the best of vacuum tubes and modern semiconductors into a single device. Citation: Vacuum channel transistor combines best of semiconductors and vacuum tubes (2017, April 4) retrieved 18 August 2019 from Illustrations and scanning electron microscope image of the nanoscale vacuum channel transistor. Credit: Han et al. ©2017 American Chemical Society Explore further Compared to conventional transistors, NVCTs are faster and more resistant to high temperatures and radiation. These advantages make NVCTs ideal candidates for applications such as radiation-tolerant deep space communications, high-frequency devices, and THz electronics. They are also candidates for extending Moore’s law—which states that the number of transistors on a computer chip doubles approximately every two years—which is expected to soon hit a roadblock due to the physical limitations of shrinking semiconductor transistors. On the other hand, traditional vacuum tubes have certain disadvantages compared to semiconductor transistors, which caused them to become obsolete. Notably, vacuum tubes are very large and consume a lot of energy. With the new NVCTs, size is no longer an issue because the new devices are produced using modern semiconductor fabrication techniques, and so can be made as small as a few nanometers across. Whereas traditional vacuum tubes look like light bulbs, NVCTs look more like typical semiconductor transistors and can only be seen under a scanning electron microscope.To address the more pressing issue of energy consumption, in a new study researchers Jin-Woo Han, Dong-Il Moon, and M. Meyyappan at the NASA Ames Research Center in Moffett Field, California, have designed a silicon-based NVCT with an improved gate structure that reduces the drive voltage from tens of volts to less than five volts, resulting in a lower energy consumption. Their work is published in a recent issue of Nano Letters.In an NVCT, the gate is the component that receives the drive voltage and, based on this voltage, it controls the flow of electrons between two electrodes. In contrast, in the old vacuum tubes, electrons were released by heating the emitter of the device. Because the electrons traveled through a vacuum (the vacuum gap), they moved at very high speeds, which led to the fast operation. In NVCTs, there is not actually a vacuum, but instead the electrons travel across a space filled with an inert gas such as helium at atmospheric pressure. Since the distance between electrodes is so small (as little as 50 nm), the probability of an electron colliding with a gas molecule is very low, and so the electrons move just as quickly through this “quasi-vacuum” as they do in an actual vacuum. Even with some collisions occurring, the gas molecules are not ionized due to the lower operating voltage.Perhaps the greatest advantage of the new vacuum transistors is their ability to tolerate high temperatures and ionizing radiation, which makes them promising candidates for the harsh environments often experienced by military and space applications. In the new study, the researchers experimentally demonstrated that the NVCTs continue to operate at the same level of performance at temperatures of up to 200 °C, whereas conventional transistors would cease to function at this temperature. Tests also showed that the new NVCTs are robust against gamma and proton radiation.In the future, the researchers plan to further improve the performance of this “new old” technology.”Future research plans include device modeling work at the nanoscale, including structure and material properties,” Han told “Also we plan to study aging mechanisms to improve reliability and lifetime.”center_img Return of the vacuum tube 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. More information: Jin-Woo Han, Dong-Il Moon, and M. Meyyappan. “Nanoscale Vacuum Channel Transistor.” Nano Letters. DOI: 10.1021/acs.nanolett.6b04363 Journal information: Nano Letterslast_img read more

Green with a vengeance

first_imgGreen Graffiti’s are made from ‘algae’ (type of seaweed living on stones), harvested from buildings, cultivated and applied to a substrate, canvas or a wall. These paintings are like a plant, growing slowly over time depending on conservation’s conditions. Green Graffiti paint comes from personal researches and cooperation with several biologists and lichenologists since 2005. By giving  humans  forms  to plants Longuet tries to open a  dialogue  between  human beings  and  their  biological environments, highlighting their common traits, as  their reactions to the reality of survival, their fundamental necessity to live in a community. This project invites the audience  to  rethink  about  their integration to an ecosystem of everyday. Also Read – ‘Playing Jojo was emotionally exhausting’Reverse Graffiti (Water Graffiti workshops) are small interventions in the street, they are drawings created with water pressure on a wall covered of algae. The visuals can last several weeks or months on the wall depending on the next rain. This simple act reminds us that we belong to a living environment , the surface slowly becomes green by colonization of new plant species, continuing the appropriation of space by biological entities in a natural cycle. Also Read – Leslie doing new comedy special with NetflixThe last series of reverse graffiti were conducted in collaboration with ‘The Green Lab Delhi’ group created by children from the area. They made stencils and used them it in various locations in Neb Sarai.Those above have been photographed and will be presented during the show Jungle Me at Niv Art Centre.WHEN: Preview on 21 March at 6 pm; Exhibition on from 22 March – 22 April from 10 am to 6 pm WHERE: Niv Art Centre, Neb Sarai, Ignou Roadlast_img read more

Ode to an artist

first_imgThe book by Professor B.N. Goswamy and Rosa Maria Falvo showcases some of the rare early works that have never been exhibited before. Art Alive Gallery will be launching the book along with the artist’s solo exhibition at Visual Arts Gallery, India Habitat Centre on February 12. The show will continue at Art Alive Gallery, Panchsheel thereafter. Burman’s work takes us through his work as legends, family, and Indian gods meet and mingle in his private, kaleidoscopic universe. While realism resurfaces in his paintings, his work transports viewers into the realm of fantasy across a decidedly optimistic, oneiric landscape.    Prof. B.N.Goswamy is an eminent Indian art historian and critic. He is the recipient of the Padma Bhushan Award (2008) and Rosa Maria Falvo is a writer and curator, as well as Skira’s international commissions editor. Since 2005 she has been regularly travelling and working closely with artists and institutions throughout Asia.last_img read more

Sensex soars 565 points on Fed interesthike delay hopes

first_imgMarket benchmark Sensex on Monday rose for the fourth straight by surging 564.60 points to close at one and a half months high of 26,785.55 tracking upbeat Asian and European cues after US jobs data fuelled speculation that the Fed will not raise interest rates any time soon.On the domestic front, Sensex’s biggest single day rise in nine months since January 15, was supported by the rupee gaining some muscle against the dollar.  Also Read – Punjab & Sind Bank cuts MCLR by up to 20 basis pointsThe rally in Indian shares was a part of the smart upmove seen in global stocks triggered by expectations that the US Federal Reserve will delay the first interest rate hike in almost a decade in wake of a lackluster US jobs data.”The odds of a US rate hike during October have lessened due to poor payroll data,” said Vinod Nair Head-Fundamental Research at Geojit BNP Paribas Financial Services.After tracking bullish global cues, the 30-share Sensex scaled the day’s high of 26,822.42 and closed 564.60 points or 2.15 per cent higher at 26,785.55, a level last seen on August 21.  Also Read – ‘The great gold bull market has begun’Sentiment was also upbeat as a number of banks announced a reduction in base rates during the past few days in the wake of a steeper-than-expected 50 basis points cut in the repo rate by the Reserve Bank of India. Sensex has rallied by 1,168.71 points in four sessions, since the monetary policy review last week. On the day, 50-share NSE Nifty also recorded second biggest rise on the calender year by surging 168.40 points or 2.12 per cent to close at 8,119.30. Both the indices, Sensex and Nifty, posted their biggest single day gains since January 15. Out of the 30 Sensex stocks, 26 ended with gains while — Maruti Suzuki, Dr Reddy’s, Lupin and HUL — lost.Shares of Tata Motors emerged as the top gainer among the Sensex pack by surging 6.13 per cent on sales data and reports that its Jaguar Land Rover sales surged in the US. Global markets were largely positive, on expectations that Beijing will take steps to accelerate growth and dimmed prospects of a near-term interest rate hike by the US Federal Reserve.Indexes from China, Tokyo, Hong Kong and South Korea firmed up in the region of 0.76 per cent to 1.62 per cent while gains between 2.12 per cent and 3.35 per cent were seen from Europe.Rupee rises 22 paise to 7-week high of 65.29 per $The rupee on Monday surged by another 22 paise to close at a seven-week high of 65.29 per dollar on persistent selling of the American currency by banks and exporters amid strengthening equities. Weakness of dollar in the overseas market also boosted the rupee value against the dollar. The rupee opened higher at 65.25 per dollar as against the last weekend’s level of 65.51 at the Interbank Foreign Exchange market and firmed up further to 65.19 before finishing at a 7-week high of 65.29, showing a gain of 22 paise or 0.34 per cent. The local currency has gained by 87 paise or 1.31 per cent in last ten days.last_img read more

Showcasing the richness of Sichuan

first_imgIn an initiative to forge bonds and to promote Indian tourism in China, China India Tourism Year in India- a joint decision taken by Prime Minister Narendra Modi and Chinese President Xi Jinping to enhance tourism between the countries, a delegation from China and the Tourism Administration of Sichuan, one of the largest provinces of China were recently in the Capital. Known for its giant pandas and world famous spicy cuisine, Sichuan and its Tourism Administration aimed through this conference to spread better awareness about the province amongst Indian travellers with its tagline as ‘Sichuan – More than Pandas.’ Sichuan Tourism Administration highlighted the province to be home to not only the giant pandas, but also to diverse art and culture, breathtaking natural beauty, unique culinary, ancient history and vast resources which makes it the tourism cynosure of China. Also Read – ‘Playing Jojo was emotionally exhausting’Sichuan has favourable geographical and ecological resources with more than 4000 tourist attractions which includes nine of 5A level scenic spots, five world heritage sites, four world biosphere reserves, two World Geo Parks. Another cultural heritage which was brought to light in the Conference was the ‘Leshan Giant Buddha’ or ‘Lingyun Giant Buddha’ which is the sculpture of a seated ‘Maitreya Buddha’ located at the confluence of the Minjiang, Dadu and Qingyi rivers in southern Sichuan, close to the city of Leshan. The stone sculpture which has been carved out from a cliff, faces Mount Emei, with the rivers flowing below its feet. Mount Emei Scenic Area including Leshan Giant Buddha Scenic Area is another UNESCO World Heritage Site and easily rivals other famous stone carvings such as the Sphinx and the Valley of the Kings in Egypt.  Also Read – Leslie doing new comedy special with NetflixAs one of the four sacred Buddhist mountains of China, Mt. Emei features more than 26 temples including eight major ones which frequently hold Buddhist ceremonies. Wang Ning, Executive Vice Governor, Sichuan remarked: “I am hopeful that the Conference will help Indian people better understand Sichuan and create a positive atmosphere for the tourism in Sichuan from India. Both India and Sichuan are fascinating tourism destinations. Just like India, Sichuan has rich ancient heritage, cultural diversity and centuries old civilisation which we take pride immense pride in.”Song Ming, Deputy Director General, Sichuan Tourism Administration who was also present at the conference, said: “This Conference is an important launching pad for us to boost tourism from India to Sichuan and is a precursor of an action plan that includes a number of incentives and trial measures for travellers as well as tour operators from India.”last_img read more

Woman harassed over phone after photos number spread on leaflets

first_imgKolkata: A young woman’s phone number and pictures were allegedly circulated using leaflets by an unknown miscreant. On Saturday night, the victim lodged a complaint against the perpetrator at Belgharia police station inthis regard. According to the sources, the victim, who is an Information Technology employee, had received a call on Thursday from a total stranger for friendship while she was working in office. She immediately disconnected the call. But the person kept on calling on her number. Eventually, she blocked the Also Read – Rain batters Kolkata, cripples normal lifephone number. Later, she received some messages and her pictures on WhatsApp. After downloading the pictures she saw that someone or some persons had printed leaflets with her phone number and pictures on, along with some expletives. She also told police those pictures could only be found on her Facebook account. She informed police that on seeing a picture of the leaflet on WhatsApp she removed the number from the block list and called back. When she asked where he had found the leaflet, the person on opposite side told her he found those lying on the road in the Tyangra area. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedThe victim lodged a complaint against unknown person with the police and requested for a quick investigation. It is suspected that someone known to her has committed the offence over some kind of incident that had taken earlier. During interrogating the victim said earlier someone had written her name and mobile phone number inside the toilet of a long distance train. She had to face immense trouble due to that. After hearing the previous incident, the sleuths suspect the offender might be someone who might have tried getting close to the victim which she did not allow. Thus, the person is seeking revenge. No one has been arrested yet.last_img read more

Print Biennale India awardees honoured at the grand ceremony

first_imgThe award ceremony of the First Print Biennale India 2018 (PBI), organized by Lalit Kala Akademi, recently took place in the lawns of Rabindra Bhawan. Dr Mahesh Sharma, Minister of State (I/c) for Culture, Government of India, couldn’t attend the function personally. However, he sent his message which was read out by Dr Paula Sengupta – “I am so glad to know that the Akademi is preserving and encouraging such fine art of printmaking through this grand event. I appreciate all the beautiful prints on display and the outstanding effort of the Academy that contributes and makes us aware of the contemporary trends in art. I also extend my compliments to the Lalit Kala Akademi for supporting and encouraging contemporary artists through this biennale, creating a unique legacy for the future. I congratulate all the winners” Also Read – Add new books to your shelfThe Chief Guest of the programme Sujata Prasad, Additional Secretary, Ministry of Culture, stated, “I must appreciate the tremendous job done by the jury members. Prints exhibited at the biennial are joyous, quirky, protest prints, surreal and realistic. The entire display is quite versatile and interesting. I congratulate award winners and other participants.”Addressing the ceremony, M L Srivastava, Protem Chairman of the LKA, said, “The First Print Biennale India is a major step forward, taken by the LKA, in making the lesser known genre of visual arts popular. The event has elicited higher interest globally in artists as well as art lovers.” Also Read – Over 2 hours screen time daily will make your kids impulsiveIt was followed by the launch of first PBI catalog and the medallion by the Chief Guest Sujata Prasad. She further honoured the awardees of the Biennale India with two lac rupees as prize money along with the medallion and certificate.Arup Kumar Kuity (Andhra Pradesh), Satya Narayana Gavara (Andhra Pradesh), Preya Bhagat (Uttar Pradesh), Purvi Parmar (Gujrat) and Sonal Varshneya (Uttar Pradesh) are given the award in the first PBI. Apart from the five awardees, 8 printmakers have been chosen for the Honourable Mention by the PBI jury panel. The occasion also witnessed mesmerising performance by Pandit Vishwa Mohan Bhatt (Padma Bhushan), Kathak performance by Manisha Gulyani, and the release of the Print Biennale India 2018 catalogue by Chief Guest Anupam Sud, Commissioner of the first PBI, along with its steering committee members Ananda Moy Banerji, Dattatraya Apte, R.S. Sham Sunder, Dr. Paula Sengupta and Vijay Bagodi.In the morning, a lecture series was inaugurated by M L Srivastava, Chairman, LKA at the Sahitya Akademi Auditorium as a part of the event. Kavita Shah, Jayati Mukherjee, Lina Vincent Sunish, Arpan Mukherjee and Dr Paula Sengupta were the speakers who elaborated on the historical significance and contemporary scope of print in the field of art. Amit Mukhopadhyay delivered a curatorial talk on ‘Atelier Populaire’.The first tier jury consisting of eminent artists sharply examined the 1126 entries received from 415 artists across the globe – 364 Indian and 51 International printmakers – and unanimously chose 177 exhibits. The second tier jury constituted of distinguished artists Waswo X. Waswo (US), Laxma Goud (India) and Shirish V. Mitbawkar (India), who selected five awardees and eight Honourable Mentions out of 153 printmakers.last_img read more