The Jupiter Mouse rests comfortably in your hand and operates in a free-style fashion which directs the cursor by tilting the wooden ball in the direction and velocity a user desires. The Jupiter in operation with its smooth wood grain exterior creates an aesthetic desk accessory and navigation tool. (PhysOrg.com) — Actbrise Electronics embraces form and function in creating the Jupiter Mouse. The round wooden mouse is made from Chinese Flowering Ash located in the countryside of Gunma Prefecture in Japan. The accelerometer wooden mouse has natural color wooden swirls which resemble the planet Jupiter. The click button resembles the Great Red Spot on Jupiter. Early Chinese, Japanese, Korean and Vietnamese star-gazers referred to Jupiter as the “Wood Star” representing one of the ancient Five Elements. 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 Jupiter Mouse has a tactile soothing feature that lends itself to being used as a stress reduction device. Rolling the Jupiter Mouse in your hand produces a relaxing experience. The standard ergonomically designed mouse while greatly improved in the past five-years doesn´t compare with the earthy-feel of the Jupiter Mouse. A light weight round wooden ball poised to navigate in all directions with a twirl and a right click, left click and click-on button along the swirling rings of Jupiter. When the Jupiter Mouse is not in use it rests on a Zen inspired square wooden block. The Jupiter Mouse with a single inconspicuous cable uses the USB 2.0 port as a connection to your PC desktop or laptop. Minimalism design captures the essence of “less is more.” Inspired by traditional Japanese design, minimalism transcends geography as represented by the German Pavilion in Barcelona. Minimalism is characterized by subtle use of color and natural textures with clean and fine finishes. The inherent beauty of the object is the focal point. Actbrise Electronic´s design team has created a functional piece of art which might be described as “Less, but better” a motto of industrial designer Dieter Rams. Japan Trend Shop´s on-line store offers the Jupiter Ball for $227. Handmade does not come cheap in any marketplace. For a glimpse of the Jupiter Mouse in action, check out the Jupiter Mouse YouTube video. © 2008 PhysOrg.com Jupiter Mouse. Image: Actbrice Electronics. Citation: New Jupiter Mouse Accelerometer: Less, But Better (2008, November 10) retrieved 18 August 2019 from https://phys.org/news/2008-11-jupiter-mouse-accelerometer.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. Citation: Good vibes: Coupling electron spin states and carbon nanotube vibrations (2012, May 23) retrieved 18 August 2019 from https://phys.org/news/2012-05-good-vibes-coupling-electron-states.html (Phys.org) — An electron’s spin is separate from its motion, and is suitable for use in both highly-precise magnetic sensing as well as a qubit in quantum computing. Recently, scientists at the University of Konstanz in Germany have theoretically investigated the coupling of electron spin in carbon nanotube quantum dots, showing that the carbon nanotube’s nanomechanical vibrations can significantly affect the spin of an electron trapped on it. Moreover, their findings also theoretically show that the carbon nanotube itself can be affected by the electron’s spin. The researchers state that their findings have important implications for magnetic and mass nanosensors, quantum computing and other nanoscale applications. Explore further “The idea was that a nanomechanical resonator – in this case, a piece of carbon nanotube suspended over a trench – can act as the phonon cavity and allow for the analogous effect,” Burkard explains. “If the resonator mode is on-resonance with the so-called Zeeman energy required for a spin flip, quantum information can transferred back and forth between the spin and the phonon; in off-resonance, a prolongation of the lifetime of the spin qubit can be achieved. The latter is therefore also something that is interesting for quantum information processing.”Mathematically, Burkard continues, the challenge was to investigate the spin-phonon system, which is both driven from outside and at finite temperature. “We used and developed two methods for this purpose: a numerical computer simulation allowed us to include all relevant effects and in particular finite temperature; and a so-called semi-classical approximation helped us to understand the main effects of the driven system at zero temperature.”Regarding next steps in their research, the scientists are currently looking into possible applications for quantum information processing, with spin playing the role of the quantum bit, or qubit. “In such a scenario,” Burkard points out, “our results may lead to spin-readout schemes, as well as to new quantum-coherent spin-spin coupling mechanisms.”Burkard also outlines what would be required for the construction of physical apparatus that could test their theory – namely, a highly sensitive readout of the motion of a nanomechanical resonator. (Several labs worldwide are working on this, such as that of Leo Kouwenhoven, Herre van der Zant, and Gary Steele at the Technical University (TU), Delft, The Netherlands.) “Another requirement,” he adds, “is the ability to operate at low temperatures.”Burkard sees a key impact of their findings being the potentially enhanced performance of nanotubes in sensing applications. ‘’Magnetic sensing would be based on the sensitivity of the electron spin with regard to external magnetic fields.” Since electron spin is coupled to the mechanical resonator – the vibrating carbon nanotube, which carries an electric charge by virtue of the electron confined to it – the signal could then be read out by electrical means.“Mass sensing, in turn, would utilize a change of vibration frequency of the mechanical resonator when a small mass is deposited on it,” he continues. “The change in frequency would then affect the spin and could be read out via, for example, spin-sensitive electric transport measurable as current flowing through the nanotube.”Burkard also sees benefits beyond the group’s own work. “Currently, there is great interest in hybrid systems for quantum information processing, as well as for studies of fundamental physics,” he notes. “In our case, it would be interesting to create quantum entanglement between the spin of a single electron and the mechanical motion of a much larger object, such as the nanotube in our current study.”“A fundamental question in quantum mechanics,” he continues,” is about its range of applicability – that is, how large an object can be and still be in a quantum-mechanical superposition of two different places. We know that electron and single atoms behave quantum-mechanically, but objects in our macroscopic everyday world don’t. The question is,” Burkard concludes, “how far we can apply quantum laws. By providing some new tools, our results may open a new door in this direction as well.” From lemons to lemonade: Reaction uses carbon dioxide to make carbon-based semiconductor Copyright 2012 Phys.Org 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. More information: Spin-Orbit-Induced Strong Coupling of a Single Spin to a Nanomechanical Resonator, Physics Review Letters 108, 206811 (18 May 2012), doi: 10.1103/PhysRevLett.108.206811 Schematic of a suspended carbon nanotube (CNT) containing a quantum dot filled with a single electron spin. The spin-orbit coupling in the CNT induces a strong coupling between the spin and the quantized mechanical motion u(z) of the CNT. Image (c) Prof. Dr. Guido Burkard, Physics Review Letters 108, 206811 (reproduced with permission) Prof. Dr. Guido Burkard, Postdoctoral Researcher Andr´as P´alyi (now in the Department of Materials Physics at Eötvös University, Budapest) and their colleagues faced a number of challenges in their theoretical study of this phenomenon occurring at what they describe as the ultimate quantum limit. “One of the main challenges was to theoretically analyze the spin-phonon system, including the effect of its temperature,” Burkard tells Phys.org. “For previously known systems such as atom-photon cavities, one can safely assume zero temperature – but in a solid-state environment like ours, one needs to take into account a finite temperature.” In other words, even if experiments will be done very close to absolute zero temperature – the typical point in current research studies is one-tenth of a degree Kelvin above absolute zero – this may affect the behavior of the system. “This was not only theoretically challenging, but also rewarding: since there hadn’t been any need to do so, the relevant theoretical model, the so-called Jaynes-Cummings model, had not been studied at non-zero temperature for a driven system before, and we had a chance to enter unchartered territory here. In summary, we found that the sought-after quantum effects can still be identified at finite temperatures.” In a driven system, the resonator is actuated by an external source in the form of an antenna proximate to the resonator that couples to the charge on the carbon nanotube, causing it to move and – due to the nanotube’s inherent stiffness – vibrate. By measuring the amplitude of its oscillation, the presence of, coupling to, and (ideally) the state of the spin can be determined.In addressing such challenges, Burkard cites a particular conceptual insight based on what the team knew from studying electron spin relaxation, or the decay of a prepared spin state, in semiconductor nanostructures known as quantum dots: that the predominant mechanism for spin relaxation involves the emission of a phonon – a quantized sound wave – into the extended solid. Spin relaxation is therefore like spontaneous emission of a photon. Spontaneous emission from atoms can be suppressed by the use of an optical cavity where in the so-called strong coupling regime, the photon resides in the cavity long enough to be reabsorbed and reemitted many times before it is lost – a phenomenon known as vacuum Rabi oscillations.
Citation: Researchers feed white blood cells micro-lasers causing them to produce light (2015, July 23) retrieved 18 August 2019 from https://phys.org/news/2015-07-white-blood-cells-micro-lasers.html A team of researchers working at the University of St Andrews in Scotland has found a way to place a laser inside a living human cell. In their paper published in the journal Nano Letters, the team describes their technique and the ways in which the new procedure may be used for future medical applications. 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. Explore further Journal information: Nano Letters More information: Nano Lett., Article ASAP DOI: 10.1021/acs.nanolett.5b02491 New discovery sheds light on research tool © 2015 Phys.org Scientists have been working with lasers based on single cells for a number of years, but until now, all of them required optical resonators that were actually larger than the cell—in this new effort the researchers used a resonator so small that it was able to fit inside the cell. The point of such research is to create fluorescing cells in living organisms, which would allow researchers to track them as they go about their business, and that would offer insight into such things as how cancer cells get their start.In this new effort, the researchers have expanded on prior research where green fluorescent proteins (normally found in jellyfish) were introduced into human cells and then light was amplified using a resonant cavity. In this new work, cells were coaxed into “swallowing” a whispering gallery mode micro-resonator, which forms a tiny bubble inside the cell—a fluorescent dye inside the resonator grows excited when hit with a laser beam causing the light to bounce around inside the bubble which causes it to be amplified. The result is light emitted at a different wavelength, i.e. a tiny implanted laser. The color that is emitted depends on the size of the bubble and refractive index.Because the procedure allows for modifying large numbers of cells, and because the light is emitted for a protracted period of time (days or weeks), the researchers believe that it might be used for distinguishing and tracking cells over a prolonged period of time inside of a living organism, potentially giving researchers a means for performing intracellular sensing, adaptive imaging and perhaps actually watching the process by which tumor cells grow.Thus far, the technique has only been used on cells living in a Petri dish, but the team is hopeful that further research will lead to a cell tracking system for test animals, and then perhaps eventually, for humans.
Normally, it is nearly impossible to hear underwater sound from the air above—the same is true in reverse. This is because of acoustic impedance forming a sound barrier. Sound waves bounce off the barrier, preventing them from escaping. In this new effort, the researchers applied a metamaterial device (a metasurface) to the barrier that essentially serves as a tunnel between the water and the air, allowing more sound waves to pass through.The metamaterial device the team built consists of a cylindrical metal outer shell that looks a lot like a car tire rim. It has a rubber segmented membrane at its center with a weight to keep it taut. The device floats on the water. A person hovering over it in the air can hear sounds from below the surface that are not normally audible. Normally, just 0.1 or 0.2 percent of sound waves can penetrate the water/air barrier, but in testing their new device, the researchers found that it increased sound transmission to the extent that up to 30 percent of waves got through.The device could theoretically be used to help with human communications between people in the water and those above the surface, or to listen to sea creatures stirring below—but it has two major drawbacks that will likely limit its use. The first is that it is only able to pass through sounds waves that come from directly below it—diagonal waves are still bounced away. The second problem is that it only works for a certain limited range of frequencies—from approximately 600 to 800 Hz. Potentially, both problems could be solved by building arrays of individual devices that could pass different frequencies and enough of them to cover a large area. © 2018 Tech Xplore Citation: A type of metamaterial device that allows better water-to-air sound transmission (2018, January 29) retrieved 18 August 2019 from https://phys.org/news/2018-01-metamaterial-device-water-to-air-transmission.html Journal information: Physical Review Letters New metamaterial manipulates sound to improve acoustic imaging Credit: CC0 Public Domain More information: Eun Bok et al. Metasurface for Water-to-Air Sound Transmission, Physical Review Letters (2018). DOI: 10.1103/PhysRevLett.120.044302ABSTRACTEffective transmission of sound from water to air is crucial for the enhancement of the detection sensitivity of underwater sound. However, only 0.1% of the acoustic energy is naturally transmitted at such a boundary. At audio frequencies, quarter-wave plates or multilayered antireflection coatings are too bulky for practical use for such enhancement. Here we present an acoustic metasurface of a thickness of only ∼λ/100, where λ is the wavelength in air, consisting of an array of meta-atoms that each contain a set of membranes and an air-filled cavity. We experimentally demonstrate that such a meta-atom increases the transmission of sound at ∼700Hz by 2 orders of magnitude, allowing about 30% of the incident acoustic power from water to be transmitted into air. Applications include underwater sonic sensing and A team of researchers from Yonsei University in Korea and Hokkaido University in Japan, has developed a metamaterial device that allows for much better than normal sound transfer between water and air. In their paper published in Physical Review Letters, the researchers describe their device, how it works and the ways it needs to be improved. Explore further 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: Recording the birth of a nanoplasma (2018, August 8) retrieved 18 August 2019 from https://phys.org/news/2018-08-birth-nanoplasma.html , Physical Review X An international team of researchers has successfully recorded the birth of a nanoplasma for the first time. In their paper published in the journal Physical Review Letters, the group describes how they pulled off this feat and what they learned from it. Credit: Y. Kumagai/Tohoku University, via Physics Nanoplasma, as the name implies, is a plasma that occurs at the nanoscale. Scientists have discovered that they can create one by firing a laser at a very small cluster of atoms—doing so is part of the science of studying objects at the nanoscale to learn more about their properties. To that end, scientists would like to know what happens as nanoplasma is formed, but have found it difficult to determine because formation happens so quickly. In this new effort, the researchers have taken a step toward that goal by developing a way to record the birth process of a nanoplasma.The technique involved isolating a cluster of approximately 5000 xenon atoms in a vacuum chamber and then firing an X-ray laser pulse at it—that caused the nanoplasma to form. To record the process, they fired a second laser at the cluster—this one with an infrared beam—and recorded the absorption pattern it created. By firing the second laser over and over at a femtosecond time resolution and recording the patterns after each blast, the researchers were able to make a video from the snapshots that were created.In studying the video they had created, the researchers found that the electrons that were forced from the atoms by the laser blast did not all leave at the same time. Instead, they found that after just 10 femtoseconds, a lot of the atoms had absorbed some of the laser energy while keeping their electrons, and a few others lost theirs. After that, it was the attraction between the free electrons and the positive ions that held the developing nanoplasma together. This state led to a lot of collisions which resulted in sharing of energy between the atoms. The researchers report that it was the excitement of the atoms that played a significant part in the migration of energy—something that had never been seen before. They conclude by suggesting their technique offers a valuable new tool for the study of nanosized matter. More information: Yoshiaki Kumagai et al. Following the Birth of a Nanoplasma Produced by an Ultrashort Hard-X-Ray Laser in Xenon Clusters, Physical Review X (2018). DOI: 10.1103/PhysRevX.8.031034ABSTRACTX-ray free-electron lasers (XFELs) made available a new regime of x-ray intensities, revolutionizing the ultrafast structure determination and laying the foundations of the novel field of nonlinear x-ray optics. Although earlier studies revealed nanoplasma formation when an XFEL pulse interacts with any nanometer-scale matter, the formation process itself has never been decrypted and its timescale was unknown. Here we show that time-resolved ion yield measurements combined with a near-infrared laser probe reveal a surprisingly ultrafast population (∼12fs), followed by a slower depopulation (∼250fs) of highly excited states of atomic fragments generated in the process of XFEL-induced nanoplasma formation. Inelastic scattering of Auger electrons and interatomic Coulombic decay are suggested as the mechanisms populating and depopulating, respectively, these excited states. The observed response occurs within the typical x-ray pulse durations and affects x-ray scattering, thus providing key information on the foundations of x-ray imaging with XFELs. © 2018 Phys.org Journal information: Physical Review Letters 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. Explore further Freedom of electrons is short-lived
Art has decided to take a new leap and head straight in to the world of women empowerment. Aptly called Empowerment, which is a non profit organisation, presents Feminine Mystique – all all woman art exhibition to be held in a city mall from 5 March.Celebrating Woman’s Day, calender marked for 8 March, Feminine Mystique is a celebration of the quintessential woman. The paintings portray the essence of a woman in myriad avatars, in her entirety, her soul, her song, her sensuality, her Also Read – ‘Playing Jojo was emotionally exhausting’shakti as also her roop. The journey for the artist is a journey to the core of herself and a cathartic experience as well. A feeling, an expression that goes beyond the words but overflows into each canvas in a unique signature style is the mark of this exhibition. While women artists address global issues, there is a reflection and insight into something more personal. In an Indian society, which has a sensitive but powerful history of gender inequality, women voice their thoughts in various way; one of the most expressive and visual approaches being art. Also Read – Leslie doing new comedy special with NetflixThe participating artists are – Bharti Verma, Gunjan Narain, Him Rajni, Meenakshi Dhiman, Artist Geetha, Sangeeta Murthy, Shweta Zharotia, Simret Jandu, Sonika Agarwal, Sunayana Malhotra, Shuchi Khanna and Maitreyi Kar and the exhibition is curated by Kumar Vikas Saxena. Head over this weekend and have a look.DETAILDates: March 5, 2013 – March 20, 2013Timings: 11am – 7pmVenue: DLF Place Saket, District Centre
A long drive with your favourite music on loop.Isn’t it one of the pleasures of life? An idea that becomes a far cry in summers. Don’t let the searing heat play the spoilsport. Follow the experts from gaadi.com, a leading Indian online marketplace for used cars and new cars to enjoy a comfortable ride this summer. Keep these tips handy: A properly working air conditioner is a must. Head straight to the workshop and get your air conditioner checked up. It’s a natural tendency to put AC’s fan at the maximum speed. Keep it a level lower. Put less load on the engine by keeping the temperature between 20-22, once the cabin cools down. Dust in the air makes the AC filters clog up. Change filters after every 20,000 km. Try not to park in direct sunlight. Don’t switch on AC immediately. Instead, roll down the windows for some time.
As spring knocks on the door, it’s high time to clear that wardrobe and bring in new clothes. Put away those denims, dark colours, flats and regular office going trousers and shirts. Yes! This year the runway has redefined the autumn/winter collection with bold colours, furs, impact prints and masculine tailored suits for the office-going lady. This season redo your wardrobe with retro, vintage and rugged look. Denim though has lost its charm and has been replaced by various interesting options. Designer Gautam Gupta says, “Denims are classic, but one should look for other options like dhoti trousers, drop crotch trousers, cotton-lycra lowers.” Also Read – ‘Playing Jojo was emotionally exhausting’Spring/summers colour blocking, ombre and monochrome trends are something to save in the wardrobe. Colours like neon from the spring summer is something one can opt for but even natural tones of earthy browns featuring khaki, camel and red cast browns are definite pickups. One can also add jump suits and skirts in the wardrobe in autumn hues such as pumpkin oranges, rust and copper, brick red which are classic of this season. Open grandma’s trunk and bring out the laces, jaali work and khadi jackets with contemporary designs to add that vintage touch to the wardrobe. Dhoti pants with block prints in pastel colours are also good picks. Also Read – Leslie doing new comedy special with NetflixFor the working women, runways both Indian and international showed an array of skirt suits and dresses with overcoats in bold dark colours. While picking one, the length and comfort should be kept in mind, “Ideal skirt length which works on most body types is mid thigh length. Material such as lycra, georgette satin, georgette, suede are some of the fabric one can think of,” said Gupta.Finally, no wardrobe is complete without the perfect pair of shoes and accessories, “The fashion trend for the neck pieces remain, though they have gone longer in length, bags are varying in shapes from totes to sling. Try accessories in neon colours,” suggests Gupta.The accessories should compliment not only the look but shoes also. Balance the combination and don’t wear loud accessories when the outfit is a little bold.
Twitter is flooded with intertextual one and multi-liners meandering through its massive heart. Some call it ‘micropoetry’. Others prefer Twitter haiku. But 17 syllable or not, it’s spontaneous outpouring of powerful emotion into the belly of this cyber beast. Writers like Nigerian-American Teju Cole, English Joyce Carol Oates, poets like Jacqueline Saphra, among others have taken to Twitter to not only experiment with this new ‘box’ – for that’s what they call any kind of formulaic structure, celebrating it as much as lamenting its potentials of literary innovation – but also connect with their ardent readers. Also Read – ‘Playing Jojo was emotionally exhausting’Oates tweets, ‘The novel is the novelist’s effort at assuaging a profound loneliness. Again.’ Cole, on the other hand, juxtaposes a game of football (FIFA final match between Germany and Argentina to be precise) and turns it into an opportunity to philosophise with scintillating imagery. ‘Germanyconnecting like centipedes but …nein.’ Twitter behaves like a mammoth, many-headed hydra with billions of eyes, each eye creating its own Oracle of Delphi. In Britain, poets and rappers come together on Twitter and organise competitions lasting a day or more. Benjamin Zepaniah, a new wave poet creating ripples of digital dissension, tweets thus: ‘Intelligence may not mean intelligent/ The news may not be new/ From where we are/ To be awake/ May not mean/ To be conscious.’ Evidently, the culture of salon repartee and coffeehouse duels has shifted to this cyberutopia. Also Read – Leslie doing new comedy special with NetflixWhat about us Indians? When not posting lines of his own, writer and academic Amitava Kumar often quotes authors with the intention of making a polemical point. ‘’Because I come from the West Indies / certain people in England seem to think / I is an expert on palm trees’ from poem by John Agard’, he recently tweeted. Twitter is a readymade field of play, custommade for imagist-style, pithy and startling observations on things here and now, on the eternal and ephemeral, leveling big names with the almost anonymous. Writes @sapiotextual: ‘A plan as spontaneous as procrastination.’ Or: ‘’You be the dream, I the silent shattering.’ Here’s a gem from @parekhit: ‘When the truth sets you free, it usually cages someone else.’ Here’s @shakti_shetty: ‘A doubt called tomorrow.’ Or: ‘The roads less travelled miss us.’ Twitter poets are here to stay. They pass by like movie credits, often unnoticed, but make your timeline a little more worthy of your attention. Between The Covers is a weekly column on reading up and rating down
Google is the world’s most sought after employer in the world, followed by Apple and Unilever in the second and third places, respectively, according to a report by professional networking site LinkedIn.The World’s 100 Most InDemand Employers: 2014 was based on billions of interactions from LinkedIn’s over 300 million members.No Indian company made it to the coveted list, however, a significant number of them do have their presence in the country. Also Read – I-T issues 17-point checklist to trace unaccounted DeMO cashThe list was dominated by American companies with as many as 63 ‘in-demand’ companies were headquartered in the US.Moreover, eight of the top 10 most sought after employers in the world are US based. Besides Google, Apple and Unilever, other companies in the top 10 list include Microsoft (fourth), Facebook (fifth), Amazon (sixth), Procter & Gamble (seventh), GE (eighth), Nestle (ninth) and PepsiCo (10th).A sector-wise analysis showed that the top three sectors that dominated the list include technology, telecom and media; followed by retail and consumer products and oil and energy. Also Read – Lanka launches ambitious tourism programme to woo Indian touristsAs per the LinkedIn survey, around 15 per cent of in demand companies have fewer than 5,000 employees. The employee count for each company was based on the number of member profiles on LinkedIn associated with the company.As per the report the top three smallest companies by number of employees are Bill and Melinda Gates Foundation with 1,622 employees, Airbnb (1,836) and Netflix (1,906).In order to calculate the winners LinkedIn analysed over 10 billion data points between members and companies and compared the data with surveys of thousands of members to determine a company’s ‘familiarity and engagement score’.‘The analysis also weighted member actions like viewing employee profiles, visiting company pages and following companies,’ LinkedIn said.