Citation: Surface plasmons enhance nanostructure possibilities (2007, September 18) retrieved 18 August 2019 from https://phys.org/news/2007-09-surface-plasmons-nanostructure-possibilities.html A group of scientists from University College London and at the Queen’s University of Belfast have demonstrated a principle of achieving ultrahigh light dispersion that makes use of surface plasmon polaritons on nanostructures.“We have proposed a new principle to realize a microscale spectral device using the properties of surface plasmons on metallic nanostructures that can provide wavelength separation of one or more orders of magnitude better than in other state-of-the-art wavelength-splitting devices available to date,” Anatoly Zayats, one of the scientists at Queen’s University, tells PhysOrg.com via email. He and his colleagues have published their process, and the results of their experiment, in a Physical Review Letters piece: “Dispersing Light with Surface Plasmon Polaritonic Crystals.”Zayats points out that using conventional light diffraction can be difficult in optical communications and other systems because bulk three dimensional grating. “It is not possible to have several next to each other because of the size,” he says via phone.This problem is solved by the use of surface plasmon polaritons (SPPs). The SPPs used in the demonstration by the group from University College and Queen’s University are on a periodic nanostructure. In this realization, the dispersion process has two stages: the first changes incident light into SPP Bloch modes and the second involves refraction of the SPP Bloch waves. A metallic nanostructure both excites and diffracts the SPPs. Zayats says, “This significantly enhances the dispersion through the combination of conventional diffraction, amplified by the photonic superprism-like effect.”Uses for the plasmonic light dispersion would be in such areas as quantum information processing, lab-on-chip applications (especially in biology) for spectral analysis, chemistry and electronic engineering. Additionally, the high-resolution capabilities of this novel technique would allow for further study in fundamental physics. The Group is most excited about the implications for optical communications as signal processing devices.Zayats insists that the process is compatible with current technologies. The development and testing of the technique illustrates that it is possible with today’s scientific capabilities. However, he continues, using this SPP nanostructure technology “would require some work to interface conventional photonic devices and the proposed plasmonic device.” Zayats says that even though it is possible to achieve this, the difficulty is efficiently integrating it with current practical technology. “Interfacing is the problem that plasmonic in general is currently facing.”But Zayats remains optimistic that the system he and his colleagues have worked out will be viable. He maintains that there are several methods in the works by different scientific groups with regard to solving the problem of plasmonic integration: “As soon as this will be resolved to everyone’s satisfaction, we will most definitely see the dispersion plasmonic device widely employed in standard optical communications.”Copyright 2007 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 Light may increase magnetic memory speeds 1000 times, decrease electricity consumption As technology becomes smaller and smaller, scientists work to find solutions to a variety of problems in many different fields. It is known that light could be used for studying molecules and atoms, as well as for solving problems of quantum information processing and even for lab-on-chip applications in biology. The problem is how to reduce size of such optical devices to the level compatible with modern nanotechnology. 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.
The patent application filed last November and made known earlier this week is from Sony Mobile Communications in Lund, Sweden. The patent application describes a mobile device camera sensor that records the stats of the photo taker, information including skin conductance, body temperature, blood pressure, respiratory rate, pulse rate, and blood oxygen level. That information would be recorded into memory and tagged to a specific photo, a new twist in metadata for digital photos. But who would use this and why? You won’t get many answers from the patent application, which descries the sensors but does not specify which application areas could result. Here’s at least a possible clue, though. “At Sony, we are targeting the medical business for mid- to long-term growth,” the Sony President and CEO, Kazuo Hirai, has said. As a major exporter of consumer electronics, they have not lost sight of the opportunity their technology presents for health products. “We can leverage our technology base in image-capturing sensors, lenses, 3-D technology, image processing, to mention just a few areas,” Hirai said in an interview in Tokyo last year.The technology in the patent application possibly, as a guess, may be used as part of a patient’s dealings with doctor’s offices and hospitals. The patient could possibly take a photo and attach vital signs without having to be hooked up to medical equipment. The patent application makes the following point. “Usually when measuring vital signs, sensors, connected by wires to bulky measuring equipment, have to be placed or used on the person’s body. However, in this case the measuring of vital signs has to be done in another way since using cumbersome sensors and measuring equipment is not a viable option.”According to the application, the “first aspect of the present invention relates to a method for tagging a recorded image in a mobile communication device, wherein said recorded image is recorded by a camera unit in said mobile communication device, the method comprising the steps monitoring, using at least one sensor in said mobile communication device, a user’s vital signs, recording sensor information relating to said user’s vital signs when said user operates said camera unit in said mobile communication device and is in contact with at least one of said at least one sensors in said mobile communication device, recording an image from said camera unit when said user operates said camera unit in said mobile communication device, determining a tag based on said recorded sensor information, assigning said tag to said recorded image and storing and organizing said recorded image in a memory in said mobile communication device based on said tag.” The sensor information, it added, may comprise information regarding any of the following user’s vital signs: body temperature, pulse rate, blood pressure, respiratory rate, blood oxygen level and skin conductance. The application mentioned a sensor integrated in a camera button in the mobile communication device, “wherein said sensor and camera button may be operated when said user operates said camera unit for recording an image.” The inventor named in the patent application is Gunnar Klinghult. LG Electronics HMD patent sets sights on video viewing 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. © 2013 Phys.org Sony has filed a patent application with the United States Patent and Trademark Office for a way for smartphone users to tag the photos they take with their vital signs. The patent proposes a “camera button with integrated sensors,” where the user can tag photos with vital sign information such as blood pressure and body temperature. It’s all about integrated sensors. More information: via Engadget Explore further Citation: Sony patent proposes camera button to send vital-signs info (2013, July 20) retrieved 18 August 2019 from https://phys.org/news/2013-07-sony-patent-camera-button-vital-signs.html
She has been an integral part of the Indian fashion industry for over two decades and is currently busy crafting Deepika Padukone’s look for Ram Leela. Veteran designer Anju Modi feels that Indian cinema has played an integral part in promoting the Indian design industry in every era.‘Cinema plays an essential part in every Indian’s life. We always get mesmerised and inspired by cinema. I remember every era on Indian cinema which gave different recognition to costume designing,’ she said. Also Read – ‘Playing Jojo was emotionally exhausting’‘From those grand sets and elaborate costumes Indian cinema became an important part of the Indian fashion industry. And since then everything is about movies and cinema,’ she added.Modi, who launched her label in 1990, is one of the founding members of the Fashion Design Council of India (FDCI), the industry’s apex body.She has been a quiet but strong force in the vehement increase in growth, awareness and potential of fashion in India and believes in taking risks for creating new things.‘Creativity and vision are always important for a designer, but to do justice with designs, you need to learn to take risks. Also if you know what people want to wear and what is new they are looking for, it helps to create something new,’ she said.
Kolkata: Trinamool Congress MP Abhishek Banerjee on Friday launched a scathing attack at the Narendra Modi-led BJP government at the Centre, stating that saffronisation of Bengal will not be possible by using ‘money power’.”The other states can be purchased by the use of money. But saffronisation of Bengal in similar fashion will not be possible,” Banerjee said, while addressing a rally held in the city to protest against the rising price of petrol and diesel. Also Read – Heavy rain hits traffic, flights”The Panchayat election results in Bengal, in which Trinamool Congress won all the Zilla Parishads convincingly, has set the stage for the Lok Sabha elections in 2019. The Karnataka results have indicated clearly that it is time to bid farewell to BJP. All Opposition leaders have indicated that Mamata Banerjee, who visited Karnataka recently, will lead from the front in the Lok Sabha elections. We have to vow to capture all the 42 seats in Lok Sabha,” Banerjee said. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedHe announced that the party will hold rallies in all the districts on Saturday and Sunday, to protest against the skyrocketing price of petrol and diesel. “We will continue our agitation until the price drops. We will go to the last limit but will not retreat until our demands are met,” he maintained.Alleging that BJP is using money power for disturbing communal harmony, Banerjee said, “We are prepared to fight a political battle as our poll plank is the all-round development of Bengal. The government at the Centre has failed in development,” he added. Trinamool Congress secretary general Partha Chatterjee referred to the promise of Modi’s ‘Acche Din’ as ‘Kaala Din’ (Black Day). “They have slashed prices in other states but not in Bengal. So we had no other alternative to taking to the streets in protest. We will fight the anti-people decisions of the Centre in district level to the booth level across the state,” Chatterjee said.He maintained that party supremo Mamata Banerjee has always been vocal against any anti-people decision taken by the Centre. “From retail businessmen to common people, everybody is suffering because of the price rise,” he added.Apart from Chatterjee and Banerjee, the Trinamool Congress rally that started from Subodh Mallick Sqaure and ended at Park Street, saw participation by senior leaders like Subrata Bakshi, Shashi Panja, Sobhandeb Chattopadhyay and Chandrima Bhattacharjee among others.
Kolkata: The state Agriculture department is soon going to hold a high-level meeting with agro-scientists from all its research stations to discuss measures for further enhancement regarding the yield of different crops in the state as per demand in the market.Asish Banerjee, the state Agriculture minister, said: “We have decided to hold the meeting with scientists and concerned officials from all the research stations.”He further said: “The date of the meeting will be finalised soon. But there are possibilities of the same getting organised by end of June or beginning of July and would also take place at Nabanna Sabhaghar.” Also Read – Heavy rain hits traffic, flightsIn the meeting there will be agro-scientists from the rice research stations of the state Agriculture department at Chinsurah in Hooghly and Bankura. It may be mentioned that besides the increase in production of paddy, Bengal has also witnessed introduction of new varieties of seeds in the past few years. Agro-scientists in the rice research stations had been constantly working on different varieties of rice seeds. In the meeting, the agro-scientists from the rice research stations would be putting forward their views and would also discuss issues that will come up in the meeting in connection with paddy cultivation. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedScientists from the research stations of the state Agriculture department including pulses and oilseed research station at Behrampore, field crop research station in Burdwan and Water Management Research Station (WMRS) will also be present in the meeting. Initiatives have also been taken regarding cultivation of rice that needs less water and it will also be discussed during the meeting.It may be mentioned that Bengal has bagged the Krishi Karman award for five consecutive years from the Centre for its success in the agriculture sector and the improvement has come after the change of guard in 2011 when the state government has started taking steps to ensure market-driven production. Despite bagging the awards, the state Agriculture department is still taking all necessary measures to continue with the development of the sector.At the same time, the state Agriculture department has taken up a drive to ensure that farmers do not burn stubble after the harvest as it creates huge amount of pollution and at the same time, the fertility of the soil also gets affected.Officials of the state Agriculture department posted in districts are also approaching farmers to make them aware of the harm it is causing to agricultural lands.
Kolkata: Many candidates who have successfully passed the National Eligibility cum Entrance Test (NEET) this year and a city based doctor have written to Chief Minister Mamata Banerjee, drawing her attention to the filling up of domicile form, in which it was alleged that outside candidates are getting advantage.It was alleged that according to the pre-counselling and counselling notification organised by the state Health department, candidates from other states are being given advantage only because their parents have domicile here in the state. Whereas, the students appearing for NEET from Bengal have been deprived due to the ‘faulty domicile system’. Also Read – Heavy rain hits traffic, flightsThe students who have sought the Chief Minister’s intervention in this regard are Ahona Majhi, Laxmi Das and Nilanjan Adhikari, all of whom have cleared NEET 2018. It was alleged that many candidates from outside would be given opportunity to study MBBS and BDS courses in the state, as they enjoy domicile as any one of their family members have been staying in Bengal.Multi-domicile system existed during the days when the state government used to conduct the medical entrance examination, but following the introduction of the single level medical entrance examination (NEET) throughout the country, the implementation of the old multi-domicile theory is in question. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedIt may be mentioned here that the Supreme Court had earlier passed an order, cancelling all MBBS and BDS admissions of Madhya Pradesh, asking the state government to prepare a fresh list for admission as per single domicile rule for the state.The students have alleged that the Centre should have told the state government to admit candidates on the basis of the single domicile system, as otherwise the students from the state would be victimised, said Dr Amiya Kumar Maity, who also wrote to the Chief Minister along with the candidates, drawing her attention to the issue.The state Health department is trying to admit candidates on the basis of the old multi-domicile system. Many deserving candidates from Bengal would be denied medical admission, whereas candidates from out of the state would have an advantage only because any of their family members are living here in the state.
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If the very thought of a maths test makes you break out in a cold sweat, the attitude of your parents may be partly to blame as a new study has found that parent’s math-anxiety negatively affects kids.When math-anxious parents frequently pay attention to child’s math homework, the children learn less math over the school year and are more likely to be math-anxious themselves, the findings showed.“We often do not think about how important parents’ own attitudes are in determining their children’s academic achievement,” said one of the lead researchers Sian Beilock from the University of Chicago in the US. Also Read – ‘Playing Jojo was emotionally exhausting’“But our work suggests that if a parent is walking around saying ‘Oh, I don’t like math’ or ‘Maths makes me nervous,’ kids pick up on this messaging and it affects their success,”
Kolkata: Bidhannagar Municipal Corporation (BMC) has intensified its anti-larvae drive during the monsoon.Monsoon serves as the ideal breeding time for the mosquitoes. It takes only seven days for the mosquitoes to become adults from eggs. It may be mentioned that Chief Minister Mamata Banerjee has asked the civic bodies throughout the state to conduct anti-larvae drives seriously.There are 41 wards under the jurisdiction of BMC, among which 27 are situated in Rajarhat, while the remaining 14 are in Salt Lake. Senior BMC officials, including Commissioner Pritha Sarkar held meetings with mayor Sabyasachi Dutta and Pranay Roy, member, Mayor-in-Council (Health) to prepare a foolproof plan. Also Read – Rain batters Kolkata, cripples normal lifeTeams have been formed that visit the houses to ensure that garbage have been cleaned regularly, drains are not clogged and empty plastic cups and bottles do not lay strewn across the open space.The team contacts senior officials when they find any resident suffering from fever.Everyday reports are prepared and send to the headquarters. Intense drives like fogging are done in the area, where residents are found to be suffering from fever. Dr Kushum Adhikary said 16 NS (+) cases had been detected in areas under BMC from January to July. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedBMC has released 1.6 lakh Gappi fishes in the canals and drains as a part of the anti-larvae drive in collaboration with the state Fisheries department. Special drives have been conducted to clear the drains that have been clogged particularly in Rajarhat.BMC has opened three centres at Narayanpur, Deshbandhu Hospital and Bidhannagar Matri Sadan where examination of blood is done free of cost.Pranay Roy, MIC (health), said massive awareness drives have been launched since January. Billboards to create awareness about the do’s and don’t’s have been put up at important road intersections.He said to conduct the anti-larvae drives successful cooperation between BMC and people is required.
Kolkata: The Kolkata Police detained two more Romanians from Indore in connection with the ATM fraud case.So far, the Kolkata Police have arrested eight persons in this connection. On Wednesday, Customs officials caught a Romanian national named Nana, who was one of the masterminds behind the entire operation, from the Indo-Nepal border. He was later handed over to the Kolkata Police. Officers of the Special Investigation Team (SIT) interrogated Nana and came to know about two more Romanians, who were also allegedly involved in the racket. Also Read – Rain batters Kolkata, cripples normal lifeBased on his information, the police conducted raids and detained the two more Romanians — Adrian and Karnel. This came as a major breakthrough for the Kolkata Police as the arrest of the members of the Romanian gang will help to check the cases of ATM fraud. The cops suspect that Adrian and Karnel were in constant touch with Nana, who was running the racket from Delhi. After the arrest of some members of the Romanian gang, Nana had realised that he would soon get caught. So he attempted to flee to Nepal to evade arrest. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedIt may be mentioned that the police suspect that there could be involvement of a person from another country in the racket. They are keeping a close watch at the situation and would take necessary moves as soon as they receive any information in this connection. In another major success, the Kolkata Police have got more significant leads about the operation of the gang. The police wanted to know the parameters on the basis of which they used to select the ATM counters to install skimming machines. Sources said during interrogation, the arrested people have stated that they used to install skimming machines in the ATM counters which are situated in busy areas and where there is always rush. The police have also come to know that they used to target ATM counters mainly near hospitals, shopping malls and colleges as people in these areas are always in a hurry to withdraw money and hardly notice if any skimming machine is fitted or not. The police have also come to know the reason behind targeting Kolkata for withdrawing money unauthorisedly from various bank accounts after gathering details of debit cards. The investigating officers have learnt that Kolkata was the new destination to carry out the crime as such practices had already taken place in Delhi, Mumbai and Pune.