From 2-D to 1-D: atomically quasi ‘1-D’ wires using a carbon nanotube template (PhysOrg.com) — For the past several years, researchers have been trying to take advantage of carbon nanotubes’ good electrical properties for future nanoscale electronics applications. One of the biggest challenges in this area is finding ways to arrange and assemble the nanotubes into 3D configurations for carrying current in nanoscale devices. Most recently, a team of physicists and engineers from the Electronic Materials Research Institute at Northeastern University in Boston, Massachusetts, has demonstrated a technique for assembling nanotubes using an applied electric field. Using this method, the researchers could assemble single-walled carbon nanotubes into 3D structures by coaxing the nanotubes into deep nanoholes in a porous alumina template. An average of one nanotube per hole was vertically assembled, and, by sweeping the 0.32cm2 area, more than one million holes were filled with nanotubes.“The greatest significance of this technique is that it provides the potential to manufacture, at a high rate and on a large scale, three-dimensional single-wall carbon nanotube electrical interconnects, without the need for high-temperature synthesis,” Srinivas Sridhar, Director of the Electronic Materials Research Institute, told PhysOrg.com.To achieve this nanotube assembly, the researchers attached a positive electrode to the bottom of a silicon template, which the aluminum template went on top of. Then they manually swept a negative electrode over assembly sites, pushing negatively charged nanotubes into the holes in the aluminum template. This process of using an electric field to move charged objects is called electrophoresis. Similarly, a process called dielectrophoresis, in which a non-uniform electric field moves charged or uncharged objects, also assisted in orienting the nanotubes toward the holes.After assembling the nanotubes, the researchers sputtered a 15-nm-thick gold layer on top of the alumina template, touching the tops of the nanotubes. This layer completed an electrical connection between all the nanotubes reaching the surface of the template, with electric current traveling through the nanotubes between the gold and silicon layers. On control samples without nanotubes, no current was observed between the two layers, confirming that the nanotubes had carried the current.By not requiring high temperatures, and providing the ability to cover centimeter-scale areas in a short time, the new assembly technique has useful advantages over other nanotube assembly techniques. The method could also integrate well into existing silicon platforms, which could be used in microelectronics, field emission displays, electronic memory devices and solar cells.“The next step in nanoscale electronics is to integrate the 3D carbon nanotubes architectures with current CMOS technology and create hybrid systems,” Sridhar said. “The holy grail of nanoscale electronics is to completely replace CMOS technology by monolithic carbon nanotubes devices.“Scaling down the nominal feature size makes more space available on a chip to hold more transistors and other types of devices,” he added. “Shrinking process geometries means better performance and lower costs.”More information: Electronic Materials Research InstituteCitation: Gultepe, Evin; Nagesha, Dattatri; Casse, Bernard Didier Frederic; Selvarasah, Selvapraba; Busnaina, Ahmed; and Sridhar, Srinivas. “Large scale 3D vertical assembly of single-wall carbon nanotubes at ambient temperatures.” Nanotechnology 19 (2008) 455309 (5pp). Contact: s.sridhar(at)neu.eduCopyright 2008 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. Explore further Citation: 3D nanotube assembly technique for nanoscale electronics (2008, October 22) retrieved 18 August 2019 from https://phys.org/news/2008-10-3d-nanotube-technique-nanoscale-electronics.html A cross-sectional view of the assembled carbon nanotubes and gold top layer in yellow (false color), taken by a scanning electron microscope. Image credit : Evin Gultepe, et al. 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.
Panasonic 3D Full HD truck The problem with anaglyph 3D is that it strains the eyes, and can cause headaches and nausea in some people. Others have a dominant eye, and find it difficult to see the image as three dimensional.A newer process for 3D in the cinema uses a special screen and polarized glasses. In this system images for the left and right eye are rapidly alternated, and the glasses pick up the appropriate image for each eye. A similar technique has now been introduced for high definition LCD televisions by LG Electronics in South Korea and Hyundai in Japan. The system, known as X-Pol, projects the different images in the even and odd horizontal lines of the video, and the polarized glasses sort it all out for the viewer. The original 3D experience of movies depended on the viewer wearing stereoscopic green and red glasses. The illusion of 3D in the image came from superimposed green and red images taken from slightly different angles. Each eye saw only one image, and the viewer’s brain combined them to give the illusion of three dimensions. 3D movies using this technology, called anaglyph 3D, can be viewed on any TV, as long as the viewer wears the glasses. Panasonic executive Peter Fannon said the new high definition 3D televisions will give viewers an experience just like being there, rather than watching it on TV.Panasonic will be releasing some Full HD 3D models later this year, with Sony’s version coming on the market later. Buyers of the new TVs will also need 3D-compatible Blu-ray disc players. The glasses will be supplied with the TV sets. There is no information yet on the prices of these televisions. Anaglyph 3D glasses. Image: Wikipedia. LG Electronics 47LH50 3D LCD TV (PhysOrg.com) — Sony and Panasonic have recently announced a new technology, called “active shutter” for producing the experience of 3D on high definition TVs. The first models are expected to be available in late 2009 or early 2010. Explore further Panasonic Develops World’s First 3D Full HD Plasma Theater System More information: • Video: CES 2009: Panasonic 3D HD TV• Video: CES 2009: Panasonic TVs and portable Blu-ray• Video Commercial: Sony’s first 3D Home TV’s coming in 2010• www.panasonic.com/3D/© 2009 PhysOrg.com Citation: Active Shutter 3D Technology for HDTV (2009, September 25) retrieved 18 August 2019 from https://phys.org/news/2009-09-shutter-3d-technology-hdtv.html Separate images for the left and right eyes are recorded with 1920 X 1080 full-HD quality and alternately played at high speed. By watching these images through special LCD glasses that are timed to open and close the right and left lenses in synchronization with the alternating images, the viewer is treated to exciting 3D realism. Image: Panasonic Now Sony and Panasonic have introduced an “active shutter” technique for high definition plasma and LCD TVs. The viewer still has to wear polarized glasses, but in this system the glasses have LCD active shutters that are synchronized with signals from the TV. The shutters rapidly block the right and left eye views alternately so each eye receives the correct image. The new system gives higher resolution than X-Pol because in active shutter technology each eye sees all the lines in the video, whereas in X-Pol each eye sees only half the lines. 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.
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. Citation: Avegant plans to show headset with virtual retinal display at CES (2013, December 19) retrieved 18 August 2019 from https://phys.org/news/2013-12-avegant-headset-virtual-retinal-ces.html While the headset looks like another member of the goggles crop breaking on to the digital scene, where users attach some sort of wearable screens to their face, the Glyph stands out as the Glyph display projects light directly into your eye. He said the reason why they adopted that concept is because they are actually mimicking natural vision. Images just seem more realistic, vivid, natural and comfortable, unlike watching a cellphone or notebook computer all day, he remarked, “When I put this on,” he added, in placing the Glyph on his face, “the amount of depth is incredible….feels like I am looking out a window.”A Virtual Retinal Display uses a micromirror array and combination of optics to reflect an image directly onto the retina; the “screen” becomes the back of the eyeball. The picture comes across as sharp and vivid, and 3D images are exceptionally clear. One of the FAQ listed on the company’s site asks, “Is it safe?” Yes, is the given answer. “The light source is simply a low powered Light Emitting Diode (LED) – something like you would see at the end of a keychain light. The micromirror array and optics together create the unique image.”Looking into the device, the user sees an image that appears as an 80-inch screen eight feet away from the user. That translates, according to Avegant, to about a 45-degree field of view.Tang described his company as a startup intent on bringing out a “portable media platform.” According to the company, “Glyph can plug into any HDMI source and display any current content natively. This means sources from an XBox to a Playstation to a MacBook to an iPhone to an Android may be used while content from Blueray DVDs to video games to streaming movies can be watched.” More information: www.avegant.com/avegant-introd … -display-technology/ Dynamically reconfiguring images with flexible OLED FlexCam (w/ Video) (Phys.org) —Ann Arbor, Michigan-based Avegant on Wednesday announced that a Kickstarter campaign will launch on January 22 on behalf of its product Glyph, a $499 headset. Glyph is also to go on display at the upcoming Consumer Electronics Show in Las Vegas from January 7 to 10. The shipped version will have one HDMI/MHL cable, and onboard battery power. The Glyph is a headset that integrates video display and audio experiences in a flip-down form factor. The result is a wearable display doubling as a set of headphones. The form factor, however, is not the most notable aspect of the product. CEO Ed Tang explained what he thinks is so special about Glyph, and that is a technology called virtual retinal display. © 2013 Phys.org Explore further
© 2014 Phys.org Finding sea plankton on the outside of the ISS would be remarkable, as the outside of the station is of course exposed to space—a hostile environment, to say the least. NASA officials reported that they were aware that Russian cosmonauts were conducting experiments on the exterior of the space station (primarily on windows known as illuminators), but were unaware of what they entailed. They note that cosmonauts have conducted such experiments as recently as this past week. The same officials report that they have not heard the results of any findings regarding the experiments from the Russian scientists directly, and thus, cannot comment on what the Russians are claiming. One scientist with NASA, Lynn Rothschild, suggested that if the claims turn out to be true, the plankton likely made its way to the ISS aboard a space station module.Reports of the sea plankton findings have come, ITAR-TASS reports, from Vladimir Solovyev, chief of the Russian ISS orbital mission—he’s also reporting that the type of plankton found is not native to the parts of Russia where spacecraft are launched—he theorizes that air currents could have pushed the plankton to the station (plankton is known to make its way into the atmosphere). The findings, he continues, confirm that organisms can live on the outer surface of the space station, something Russian scientists have apparently been studying for over a year—though he didn’t actually come right out and say that the specimens found were still alive. He also reports that the outside of the space station is covered with material from spacecraft engines that is emitted as they come and go. Of concern are the illuminators, which now need to be polished. Explore further The International Space Station is featured in this image photographed by an STS-132 crew member on board the Space Shuttle Atlantis after the station and shuttle began their post-undocking relative separation. Credit: NASA/Crew of STS-132 The Russian news agency ITAR-TASS is claiming that Russian officials have confirmed that Russian cosmonauts have found sea plankton on the outside of the International Space Station. The news agency reports that the cosmonauts have also found traces of other organisms on the outside of the station as well. To date, no other news group has been able to confirm the report and thus far it appears no other agency, including NASA has been able to confirm the claims made by the Russians. Russian cargo craft docks with ISS, science satellite fails Citation: ITAR-TASS claims Russian cosmonauts have found sea plankton on outside of International Space Station (2014, August 21) retrieved 18 August 2019 from https://phys.org/news/2014-08-itar-tass-russian-cosmonauts-sea-plankton.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.
Up till now, researchers have had to kill insects and dry them before putting them under an ESM—that is because such microscopes require the specimens to be viewed in a vacuum (to keep the electron beam from scattering). In this new effort, the research team reports that they have figured out a way to apply a very thin clear coat to a specimen that prevents dehydration and thus allows specimens to be imaged as they exist naturally—representing a major step forward for research involving studying biological samples or living creatures at very close range.The coating used by the team was an artificial material that mimics an extracellular substance, in this case, a solution consisting of surfactant polyoxyethylene sorbitan monolaurate, aka TW20, which was subjected to plasma or electron beam irradiation, causing it to polymerize. The result, they report was a very thin (50 to 100 nanometers) layer, or coating, which they immediately dubbed a nanosuit. Insects coated with the material were able to survive up to two hours in a high vacuum the team reports. In addition to preventing dehydration, the coating also prevented damage to the insects from the electron beam.The team used the coating on several different kinds of insects and report that imaging them via ESM was done successfully and that most of the insects survived. They note that the coating remained intact (hard on the outside, soft on the inside) even if the insects moved. They also pointed out that coating the insects was easy to do—they just dipped the bugs in a solution or let a drop of it fall onto them and then wiped off the extra.The team plans to continue testing the impact of the nanosuit on the insects that have been coated, to find out if it causes harm that is not obvious, such as damage to DNA. Explore further More information: A ‘NanoSuit’ surface shield successfully protects organisms in high vacuum: observations on living organisms in an FE-SEM, Proceedings of The Royal Society B, Published 28 January 2015. DOI: 10.1098/rspb.2014.2857AbstractAlthough extremely useful for a wide range of investigations, the field emission scanning electron microscope (FE-SEM) has not allowed researchers to observe living organisms. However, we have recently reported that a simple surface modification consisting of a thin extra layer, termed ‘NanoSuit’, can keep organisms alive in the high vacuum (10−5 to 10−7 Pa) of the SEM. This paper further explores the protective properties of the NanoSuit surface-shield. We found that a NanoSuit formed with the optimum concentration of Tween 20 faithfully preserves the integrity of an organism’s surface without interfering with SEM imaging. We also found that electrostatic charging was absent as long as the organisms were alive, even if they had not been coated with electrically conducting materials. This result suggests that living organisms possess their own electrical conductors and/or rely on certain properties of the surface to inhibit charging. The NanoSuit seems to prolong the charge-free condition and increase survival time under vacuum. These findings should encourage the development of more sophisticated observation methods for studying living organisms in an FE-SEM. (Phys.org)—A team of researchers with members from several institutions in Japan has found a way to allow for using scanning electron microscopes (ESM) on living insects—encase them in a nanosuit. In their paper published in Proceedings of The Royal Society B, the team describes the coating they used and how effective it was when used on a variety of insects. . Observations of living insects by light and electron microscopy. Credit: Proceedings of The Royal Society B, Published 28 January 2015. DOI: 10.1098/rspb.2014.2857 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. Journal information: Proceedings of the Royal Society B Citation: ‘NanoSuit’: Researchers use nano-coating to allow for electron microscopy of living insects (2015, January 28) retrieved 18 August 2019 from https://phys.org/news/2015-01-nanosuit-nano-coating-electron-microscopy-insects.html © 2015 Phys.org Nanosuits help small creatures survive a vacuum
As per recent surveys, Delhi is among the biggest five cities of the world. The ancient city of Delhi has been transformed from a sleepy government town to a megacity in under three decades. This has completely changed the ethos of the city. Once a town dominated by courteous government officials and small-scale businessmen, Delhi today has changed into a power centre.Once a city becomes a megacity, its residents must adapt themselves in order to survive. Every megacity has its own rules. A resident must know how to abide by these rules. These places are melting pots for regional or global immigrants. Hence ambitions rule supreme. Also Read – ‘Playing Jojo was emotionally exhausting’Hail the rise of the ‘lobbyist’. In Delhi, your connections really count. Whether it is securing a government contract or getting a loan sanctioned, it is imperative to get an influential lobbyist.The original word for these people is ‘broker’. However in recent times this word has been relegated to petty people who stand outside courts or government offices. The term ‘lobbyist’ now refers to those with direct connections to the high and mighty. Also Read – Leslie doing new comedy special with NetflixAs they are in direct communication with the people who matter, your appointment will be fixed instantly. The lobbyist will ensure that no odd questions are asked. In Delhi, there are many types of lobbyists. There are political lobbyists, corporate lobbyists, export lobbyists etc. You meet them in high-profile marriages of politicians or industrialists, at embassy parties, corporate dos or at a chamber of commerce.The usual fashion statement for a political lobbyist is a stark white churidar kurta worn with a black high collar sleeveless jacket, with matching footwear. They may be wearing an expensive watch that will be the cost of a sedan. They will carry three to five expensive phones. Their car however may cost less than their watch, to avoid attention. Most corporate or export lobbyists may opt for Westernwear. They may be extremely pleasant, in well-cut business suits, driving expensive cars to choice social soirees…but they are much harder to spot.
Sandhu’s landscapes in oils, water colours and pastels along with Amar’s adventure travel photography from across the world will be displayed for the first time in India.Sandhu is one of the few artists who have developed prints using her iPad drawing apps and translates nature, still life into colorful paintings in mixed media, using ink, water colour, acrylics and oils. Singh, also a mountianeer, loves to record his myriad adventures with his camera. The idea behind this exhibition was to show a collection by Sandhu, landscapes that have inspired her along with her son’s photos of his adventures and his love for the outdoors.Singh has organised expeditions to remote and interesting parts of the world such as Kamchatka, the Himalayas, Madagascar, Papua New Guinea, New Caledonia, Japan, the Swiss Alps and the Australian Outback.When: 12-14 April; Timing: 11.30 am-7.30 pmWhere: Visual Art Gallery, Indian Habitat Centre
The 25-year-old doesn’t think there’s an ultimate secret to falling in love and staying in love, but believes that being truthful with your partner builds the best foundation for long-term happiness, reports bangshowbiz.com.‘It doesn’t matter how long it takes to get there, to be in love, as long as in the end people are honest. When you’re honest it pays off,’ she said.‘Everyone has their own speed at which they’re honest, so I would say it’s beautiful but it depends on person to person,’ added Collins. Also Read – A fresh blend of fameThe actress plays Rosie Dunne, the romantic interest of Sam Clafin’s alter ego Alex Stewart in her latest role in Love, Rosie, which sees the two best friends slowly realise that they have fallen for each other.Collins is best known for her roles in the films The Blind Side (2009), Abduction (2011), and Mirror Mirror (2012). She portrayed Clary Fray in the fantasy film adaptation The Mortal Instruments: City of Bones (2013), based on Cassandra Clare’s best-selling novel City of Bones.
The General Court of the European Union ruled on Wednesday that the inclusion of the group was not based on a “concrete examination” of Hamas’s acts but on “imputations derived from the media and the internet”. Hamas has been contesting its inclusion on the list, maintained since it was created in 2001. The court said the move was technical and was not a reassessment of Hamas’ classification as a terrorist group. It said a funding freeze on the group would continue for the time being. Also Read – Pro-Govt supporters rally as Hong Kong’s divisions deepenThe foreign office of the EU reacted by sayng “We respect the General Court of the European Union’s judgement delivered on Wednesday annulling measures against Hamas, namely the designation of Hamas as a terrorist organisation and the freezing of Hamas’ funds. This legal ruling is clearly based on procedural grounds and it does not imply any assessment by the Court of the substantive reasons for the designation of Hamas as a terrorist organisation. It is a legal ruling of a court, not a political decision taken by the EU governments. The EU continues to uphold the Quartet principles”. Also Read – Pak Army ‘fully prepared’ to face any challenge: Army spokesmanIt added “The EU institutions are studying carefully the ruling and will decide on the options open to them. They will, in due course, take appropriate remedial action, including any eventual appeal to the ruling. In case of an appeal the restrictive measures remain in place”. On December 27, 2001 the Council of the European Union adopted a common position and a regulation to combat terrorism. These measures require the freezing of the funds of those people and entities included on a list adopted and regularly updated by Council decisions. The same day the Council adopted its first decision establishing that list. By this decision the Council included Hamas on the list and has maintained them on that list ever since. The General Court said “The case-law of the Court requires that an EU decision to freeze funds is based not on factual elements that the Council may have derived from the press or the internet, but on elements which have been concretely examined and confirmed.”
Actor Jackky Bhagnani stepped into Irffan Khan’s shoes for Welcome To Karachi after the latter walked out of the film due to his other commitments. But the younger actor does not feel he can ever ‘replace’ a ‘supreme actor’ like Irrfan.“I feel Irrfan sir is a supreme actor. I can never replace him. I’m a big fan of him,” Jackky said here during the trailer launch of Welcome To Karachi.Directed by Ashish R. Mohan, “Welcome To Karachi” also features Arshad Warsi and Lauren Gottlieb. The film is slated for May 21 release. Once Jackky became a part of the film, a few scenes were changed.