Internet of Things Makes it Easier to Steal You… Adaptive security company Illumio, the just released Illumio Security Templates, offering ready-to-use security policies for core data center and cloud applications. They are pre-made to secure common applications, providing segmentation without having to reconfigure the network.These templates can be quickly used to secure applications including Exchange, Microsoft Active Directory, Microsoft SharePoint, Microsoft SQL Server and MongoDB rapidly.These tested and validated policy packages are downloadable, and they provide all the segmentation rules required to write a security policy for common enterprise applications or application components.See Also: Cyber security expert Schneier warns of impending IoT disasterA lot of programs, regardless of whether they are used in existing data centers or cloud computing environments such as Amazon Web Services, Microsoft Azure, or Google Compute Engine, need IT to constantly write fresh policies for every application and its parts by plumbing the allowed IP addresses and port/process connections for each service. This method takes a lot of time, and leaves room for errors, which can cause delays and security issues that often add days or weeks to the deployment process.Vice President of Product Management, Matthew Glenn, explains, “Illumio’s Security Templates let security and operations teams be as agile as they need to be.”He goes on to state, “With ‘push-button’ policies, IT no longer needs to laboriously create manual (and error-prone) segmentation rules in switches and firewalls from scratch. Our security templates take the work out of categorizing applications, or modifying the network to secure these critical applications. Applying pre-tested rule sets rapidly and accurately enables truly adaptive segmentation approaches for applications.”What this means for securityAccording to Illumio, in Windows Server areas, the new template method is especially useful, where process awareness in firewalls and network-based security technologies is poor, hampering the ability of these solutions to correctly segment and secure applications. It also takes time to fully understand how these applications operate before writing firewalls rules.To get the same type of security provided by Illumio Security Templates with a network solution demands opening a large range of ports on the servers, which can increase the attack surface of the environment. The Illumio Adaptive Security Platform (ASP)™ harnesses the specific process and path used by the server, rather than dynamic ports, and applies the exact set of segmentation rules required for complete security.Illumio Security Templates also take the guesswork out of security, since they have already been studied to be sure that they do not break applications. Security templates let organizations extend their Active Directory domains up to the public cloud without having to put security at risk.The way it works is by enabling Illumio ASP to tightly bind a segmentation policy around an application, which can then be sent quickly across a range of critical servers and applications. Tags:#data security#Illumio#Internet of Things#IoT#security Follow the Puck Related Posts Why IoT Apps are Eating Device Interfaces Amanda Razani Small Business Cybersecurity Threats and How to…
BTSPhoto: Kevin Mazur/Getty Images Who Will Voters Pick For Best Rap Performance? 2019 GRAMMY Awards Red Carpet Who Is Eligible For The Best New Artist GRAMMY? Twitter John BillingsPhoto: Jesse Grant/WireImage/Getty Images 2019 GRAMMY Awards Telecast | Photo Gallery Cardi B, Post Malone Among 2019 GRAMMYs Performers H.E.R.Photo by Prince Williams/Wireimage Who Will Voters Pick For Best Rap Performance? Poll: Who Will Voters Choose For Best Rap Album? Lady GagaPhoto: Christopher Polk/Getty Images Invasion Of Privacy – Cardi BWith the success of her breakout single, “Bodak Yellow,” which earned two GRAMMY nominations for Best Rap Song and Best Rap Performance at the 60th GRAMMY Awards last year, Cardi B set the stage for one of the most anticipated debut rap albums in recent memory. Invasion Of Privacy arrived on April 5, 2018, and showed the Bronx-born and raised rapper had a lot more to show.In June, “I Like It” with J Balvin and Bad Bunny made it to No. 1 on the Billboard Hot 100, making Cardi the first ever female rapper to earn two No. 1 hits. “I Like It” is also nominated for Record Of The Year, “Be Careful” received a nod for Best Rap Performance and Invasion Of Privacy is up for Best Rap Album this year. Tack on Cardi’s nomination alongside Maroon 5 for “Girls Like You” for Best Pop Duo/Group Performance bring her total nominations this year to five.By The Way, I Forgive You – Brandi CarlileSince exploding from the folk music scene into the mainstream in 2007 with her the title track from her sophomore album, The Story, Brandi Carlile has released a string of quality folk/roots albums. Her latest, By The Way, I Forgive You, shows Carlile and longtime writing/singing partners, twins Tim and Phil Hanseroth, in top form. The album’s lead single, “The Joke,” encapsulates the spirit and power of love and forgiveness, two main themes of the album.”I wrote ‘The Joke’ about a reckoning and a revolution and a time that’s coming when we’ll realize that love has already conquered the world and pick it back up,” Carlile told us in July. The album, Carlile’s sixth, yielded the same number of GRAMMY nominations—an impressive six—for the 61st GRAMMY Awards, including Best Americana Album as well as Record Of The Year, Song Of The Year, Best American Roots Song and Best American Roots Performance for “The Joke.”Scorpion – DrakeFrom the very beginning of 2018, chart titan Drake saw a groundswell of buzz for his fifth album, Scorpion. When it finally dropped in late June, the album already had three successful singles: “God’s Plan,” “Nice For What” and “I’m Upset.” Shortly after the album’s release, the album’s fifth single, “In My Feelings,” would climb to put Drake at No. 1 on the Billboard Hot 100 for the third time of year. Simply put, the Canadian rapper spent the better part of the year shattering streaming and chart records, and the ambitious and hit-laden double-disc album Scorpion was well worth the wait for fans. The project was a hit for voters as well, as Drake clocked in with an impressive seven nominations for the 61st GRAMMY Awards.H.E.R. – H.E.R.With her soulful songs and jaw-dropping musicianship only further fueling the mystique of her persona, H.E.R. stepped into the light this year, releasing her widely acclaimed self-titled debut. Apropos of her moniker’s meaning (Having Everything Revealed), H.E.R. showed the world her gift, with a breakthrough performance of “Focus” and “Best Part,” both from her debut LP, at the BET Awards this summer alongside Daniel Caesar. After a string of successful EPs, H.E.R. gave her fans a new, more complete idea of H.E.R.’s musical ability and remarkable potential. In addition to the coveted Album Of The Year nomination, she’s also up for Best New Artist.Beerbongs & Bentleys – Post MaloneNot to be outdone online, Post Malone broke streaming records this year as well by earning the most streams in one week when Beerbongs & Bentleys arrived on April 27. Real name Austin Richard Post, the singer/rapper entered a new stratosphere of popularity with his sophomore album—and he brought many of this friends along for the joyride, as the album includes cameos by the likes of 21 Savage, Ty Dolla Sign, Nicki Minaj, G-Eazy and YG. Post Malone is nominated in a total of four categories at the 61st GRAMMY Awards.Dirty Computer – Janelle MonáeAt the 60th GRAMMY Awards, Janelle Monáe delivered one of the most poignant and powerful speeches in recent memory, calling attention to the #TimesUp movement. Three months later, she made an equally powerful statement with her third studio album, Dirty Computer. With the catchy and bold singles “Make Me Feel,” “Django Jane” and “Pynk” leading the way, Monáe set a new precedent for what it means to make infectious music with a message in 2018.“[Creatives] have the power to create the culture and shape it to what we want it to be,” she told us earlier this year. “And we also have the power to undo the culture if it does not serve us well.”Golden Hour – Kacey MusgravesCountry music might be the platform Kacey Musgraves has chosen for her music, but it certainly is not a constriction for the singer/songwriter. On Golden Hour, Musgraves takes her signature stir-up of crafty lyric turns, progressive social themes and authentic twang to a new level, all while opening herself up more candidly than she has in the past.”This album feels very special and different to me because it feels like my most personal.” Musgraves told us back in July. “I don’t feel like I’ve really let people in on this scale previously.”Black Panther: The Album, Music From And Inspired By – Various ArtistsMusic has always played a key integral role in film, but for this year’s transcendent blockbuster “Black Panther,” the soundtrack took on a life of its own. Led by the Kendrick Lamar and SZA hit “All The Stars,” which earned four nominations of its own including Record Of The Year, Song Of The Year and Best Rap/Sung Performance, Black Panther: The Album, Music From And Inspired By looks to make history as just the third ever movie soundtrack to win Album Of The Year, joining the soundtracks for Saturday Night Fever at the 21st GRAMMY Awards, The Bodyguard at the 36th GRAMMY Awards and, most recently, O Brother, Where Art Thou? at the 44th GRAMMY Awards. TLC Photo: Alison Buck/Getty Images 61st GRAMMY Awards: Full Nominees & Winners List Who’s Nominated For Song Of The Year? https://twitter.com/RecordingAcad/status/1071034971920457728 BTSPhoto: Kevin Mazur/Getty Images Brandi Carlile, H.E.R. To Play The 61st GRAMMYs Photo: Michael Loccisano/Getty Images 2019 GRAMMY Awards Premiere Ceremony Who Will Voters Pick For Best Latin Pop Album? 2019 GRAMMY Awards Red Carpet Amy Winehouse Best New Artist winner for 2007 | Photo: Peter Macdiarmid/Getty Images Email Who Is Eligible For The Best New Artist GRAMMY? TLC Photo: Alison Buck/Getty Images Albums by Cardi B, Brandi Carlile, Drake, H.E.R., Post Malone, Janelle Monáe, Kacey Musgraves, and music from and inspired by ‘Black Panther’ receive nominations.Nate HertweckGRAMMYs Dec 7, 2018 – 5:33 am The 2019 GRAMMYs are just around the corner, and now the nominations are in for the coveted honor of Album Of The Year. While we’ll have to wait until the 61st GRAMMY Awards air on CBS on Feb. 10 to find out who will win, let’s take a look at which albums have been nominated for one of the most anticipated GRAMMY Awards each year. Photo: Michael Loccisano/Getty Images Cardi BPhoto: Dan MacMedan/WireImage BTSPhoto: Kevin Mazur/Getty Images 61st GRAMMY Awards Photo: Michael Loccisano/Getty Images Relive GRAMMY Week 2019 In Pictures Album Of The Year Nominees | 61st GRAMMY Awards Relive GRAMMY Week 2019 In Pictures TLC Photo: Alison Buck/Getty Images Who Will Voters Pick For Best Latin Pop Album? Who’s Nominated For Song Of The Year? Who Will Voters Pick For Best Rap Performance? 5 Ways BTS Won Our Hearts At The 2019 GRAMMYs Who Will Voters Choose For Best Alternative Album? Photo: studioEAST/Getty Images Album Of The Year Nominees Revealed | 2019 GRAMMY Awards Poll: Who Do You Want To See On The Red Carpet? Meet The GRAMMY Man: How GRAMMYs Are Made Brandi Carlile, H.E.R. To Play The 61st GRAMMYs 5 Ways BTS Won Our Hearts At The 2019 GRAMMYs Who Is Eligible For The Best New Artist GRAMMY? 2019 GRAMMY Awards Premiere Ceremony 2019 GRAMMY Awards Red Carpet John BillingsPhoto: Jesse Grant/WireImage/Getty Images Lady GagaPhoto: Christopher Polk/Getty Images News Album Of The Year vs. Record Of The Year Explained Album Of The Year Nominees | 61st GRAMMY Awards Meet The GRAMMY Man: How GRAMMYs Are Made Backstage At The 2019 GRAMMYs | Photo Gallery Backstage At The 2019 GRAMMYs | Photo Gallery H.E.R.Photo by Prince Williams/Wireimage Poll: Who Will Voters Choose For Best Rap Album? 2019 GRAMMY Awards Telecast | Photo Gallery Kacey MusgravesPhoto: Kevin Mazur/Getty Images Album Of The Year vs. Record Of The Year Explained Facebook 2019 GRAMMY Awards Telecast | Photo Gallery Cardi BPhoto: Dan MacMedan/WireImage Amy Winehouse Best New Artist winner for 2007 | Photo: Peter Macdiarmid/Getty Images Photo: studioEAST/Getty Images Meet The GRAMMY Man: How GRAMMYs Are Made Artists React To Their 2019 GRAMMY Nominations Backstage At The 2019 GRAMMYs | Photo Gallery Who Will Voters Pick For Best Pop Album? Kacey MusgravesPhoto: Kevin Mazur/Getty Images Cardi BPhoto: Dan MacMedan/WireImage Record Of The Year 61st GRAMMY Award Nominees Artists React To Their 2019 GRAMMY Nominations Poll: Who Do You Want To See On The Red Carpet? Artists React To Their 2019 GRAMMY Nominations Who Will Voters Choose For Best Alternative Album? 61st GRAMMY Awards: Full Nominees & Winners List Amy Winehouse Best New Artist winner for 2007 | Photo: Peter Macdiarmid/Getty Images 61st GRAMMYs: Here’s Your Apple Music Playlist Who’s Nominated For Song Of The Year? Cardi B, Post Malone Among 2019 GRAMMYs Performers 2019 GRAMMY Awards Premiere Ceremony Read more Cardi B, Post Malone Among 2019 GRAMMYs Performers Poll: Who Will Voters Choose For Best Rap Album? 5 Ways BTS Won Our Hearts At The 2019 GRAMMYs Kacey MusgravesPhoto: Kevin Mazur/Getty Images Record Of The Year 61st GRAMMY Award Nominees Brandi Carlile, H.E.R. To Play The 61st GRAMMYs Record Of The Year 61st GRAMMY Award Nominees Lady GagaPhoto: Christopher Polk/Getty Images Best New Artist Nominees Revealed | 61st GRAMMYs Who Will Voters Choose For Best Alternative Album? Album Of The Year vs. Record Of The Year Explained Who Will Voters Pick For Best Pop Album? 61st GRAMMY Awards: Full Nominees & Winners List Album Of The Year Nominees | 61st GRAMMY Awards Best New Artist Nominees Revealed | 61st GRAMMYs Who Will Voters Pick For Best Pop Album? 61st GRAMMYs: Here’s Your Apple Music Playlist Album Of The Year Nominees | 61st GRAMMY Awards album-year-nominees-revealed-2019-grammy-awards-nominations Who Will Voters Pick For Best Latin Pop Album? Best New Artist Nominees Revealed | 61st GRAMMYs H.E.R.Photo by Prince Williams/Wireimage Relive GRAMMY Week 2019 In Pictures Prev Next Poll: Who Do You Want To See On The Red Carpet? Photo: studioEAST/Getty Images John BillingsPhoto: Jesse Grant/WireImage/Getty Images 61st GRAMMYs: Here’s Your Apple Music Playlist
Following massive fines levied against Facebook for data misuse, a new bill in Congress aims to put the brakes on the exploitation of voter info. Getty Images Sen. Dianne Feinstein on Wednesday introduced a bill prompted by Cambridge Analytica’s misuse of Facebook users’ private data. The Voter Privacy Act looks to address a lack of federal regulation on the collection and use of voter data by political organizations. The bill also seeks to give voters control over how that data is used in federal elections. “Political candidates and campaigns shouldn’t be able to use private data to manipulate and mislead voters,” Feinstein, a Democrat from California, said in a statement. “This bill would help put an end to such actions.” The move comes on the heels of a $100 million fine levied against Facebook by the Securities and Exchange Commission and a $5 billion fine from the Federal Trade Commission. During the 2016 presidential campaign, data consultancy firm Cambridge Analytica exploited the personal Facebook data of millions while working for Donald Trump’s campaign. Cambridge Analytica reportedly violated the social network’s policies when acquiring the data, then used it to target voters with political ads developed from psychographic profiles. Exempting data from public databases, the bill would extend five basic rights to voters. Among them are the right to be notified when campaigns obtain their data and to bar further sale, as well as the right to review data obtained by political organizations and demand its deletion. Voters would also be able to tell Google and Facebook not to use their data profiles to help political groups target them. “Today, campaigns are legally able to conduct sophisticated online surveillance of everyone in our country in order to influence individuals based on their unique psychological characteristics” Feinstein said. “This targeted manipulation not only undermines our democracy, it’s a threat to basic individual freedom.” Facebook didn’t immediately respond to a request for comment. Tags 1:09 1 Originally published Aug. 1.Update, Aug. 2: Added note recording request for comment. Share your voice Politics Security Comment Facebook hit with hefty FTC and SEC fines, DoorDash changes… Now playing: Watch this: Cambridge Analytica
Global software major Infosys Ltd on Monday reported net profit of Rs.3,398 crore for second quarter (July-September) of this fiscal (2015-16), registering 9.8% growth year-on-year (YoY) and 12% sequentially.In a regulatory filing to the Bombay Stock Exchange (BSE), the IT major said consolidated revenue for quarter (Q2) review grew 17.2% YoY and 8.9% sequentially to Rs.15,635 crore under the Indian accounting standard.Under the International Financial Reporting Standard (IFRS), net income increased 1.6% YoY and 9% to $519 million and gross revenue 8.9% YoY and 6% sequentially to $2,392 million ($2.4 billion).
Karnataka political party logosIBTimesAs the election result dates are nearing there is a strong sense of grim objection towards the ruling coalition of Congress and Janata Dal-Secular in Karnataka, according to the exit poll predictions.The constant unrest among the coalition partners in the state has often led to a disagreement between the parties with both the party workers supporting their leaders rather than focusing on the partnership to gain the majority.The Congress was successful during last year’s assembly elections to keep the Bharatiya Janata Party at bay by keeping an alliance with the JD(S). However, the fortunes have been more befitting for the BJP due to their immense popularity which is gaining more followers every day.A miscellaneous look on the polls shows that out of 13 exit polls for the 28 Lok Sabha seats in Karnataka the Congress-JD(S) alliance will only gather 9 seats whereas the BJP will grab 19 seats.According to the India Today Axis poll, the saffron party will win between 21-25 seats and the coalition partners will have 3 and 5 seats.The News18 IPSOS polls predicted the BJP win 20-23 seats with a vote share of 54.47% and the UPA will wrest 5-8 seats with 41.85% of the votes.The Republic C- Voter survey has predicted 18 seats for the NDA followed by 9 seats for UPA and the ABP-Nielsen survey predicts 15 seats for NDA and 13 for UPA.Although the exit poll figures are not always true, there is a lot of disgruntled party leaders in Congress who have given up on favouring the party and has joined the saffron politics. And with the looming differences between both the parties can topple the coalition government led by HD Kumaraswamy.With a major fracture for the Congress in 2017 elections after the party only won 9 seats and JD(S) only 2, while the BJP garnered 17 seats in Karnataka marking a major victory for the saffron party.While the Congress-JD(S) alliance has pushed the major factors affecting the state like farmers issues, water and unemployment the BJP has played well with its nationalistic emotions and growing popularity of Prime Minister Narendra Modi and the NDA government which has promised of a stable government.However, the end result can be seen on May 23 after the poll results get announced. The results will determine the future of the alliance partners and the saffron party who has been fighting inch-to-inch in the poll battle.
Asaduzzaman Khan KamalHome minister Asaduzzaman Khan said Tuesday that the government would take BNP chairperson Khaleda Zia to the Combined Military Hospital (CMH) for conducting necessary wellness check if her party wants.“Khaleda Zia will be taken to the CHM for necessary medical checkups if BNP denies taking her treatment at Bangabandhu Sheikh Mujib Medical College Hospital (BSMMU),” he said at his Secretariat office.“We have prepared a proposal to bring Khaleda Zia to the CMH for conducting wellness check and there is no scope for them to deny the hospital as it is an affluent one,” he said.“I will request personal and trusted physicians of Khaleda Zia to be present at the time of conducting Khaleda Zia’s physical examination,” he said, adding that he could not understand why Khaleda Zia doesn’t want to go BSMMU Hospital as it is a well-equipped and modern hospital.The minister said this upon filling a petition over sending Khaleda Zia to the United Hospital for conducting health checkups.A three-member representative of BNP led by Khaleda Zia’s younger brother Shamim Iskander today submitted the petition after meeting home minister Asaduzzaman Khan at his office.“The government has taken the highest effort for Khaleda Zia’s physical examination in accordance with the jail code and she will be treated as per the advice of civil surgeon and physicians of prison,” he added.
00:00 /15:26 To embed this piece of audio in your site, please use this code: Listen Share More than one in five children who don’t have health insurance in the United States live in Texas, according to a new report from Georgetown University’s Center for Children and Families.Texas was among nine states that saw significant increases in the rate of uninsured children in 2017, but Texas has the largest share of children without health insurance.“Texas saw an increase in uninsured kids of 83,000 in the year 2017,” study co-author Joan Alker, told Houston Matters. “That was the biggest increase in the country.”Nationwide, the number rose for the first time since data was collected on the issue in 2008.“A lot of jobs that low wage working families are getting simply don’t provide health insurance coverage: retail, service sector jobs, agricultural jobs,” Alker said. “And that’s where we need Medicaid and CHIP to step in and make sure that those kids get covered.”Georgetown University’s Center for Children and Families.In the Houston metro area, more than 200,000 kids are uninsured, according to the latest numbers from the U.S. Census Bureau.Houston Matters reached out to leaders in Houston’s healthcare community, all of whom said they weren’t surprised by the findings.“We’ve seen this coming,” Dr. Tim Garson, the director of the Texas Medical Center Health Policy Institute, told Houston Matters. He said that last year the Texas Medical Center’s annual survey compared Texas to the rest of the country, and found that Texans are worse off when it comes to being able to buy insurance.“That then extends to their children, and so the fact that this does effect Texas almost out of proportion is not surprising,” Garson said.Experts also point to immigration policy and a fear of interacting with the government as factors contributing to the number of uninsured children.“We have a lot of kids who are citizens, but their parents are immigrants and those parents may be very scared today about interacting with the government and enrolling their children in public health coverage options,” Alker said. “Latino children do have the highest uninsured rates in Texas, and that’s a population that’s probably also being impacted by this fear of interacting with government.”Several experts said the increase in uninsured children signals a need for policy changes.“Children are more likely to be insured than adults because we are fortunate to have Medicaid and CHIP and so when their rates start dropping it’s like the canary in the coal mine because they have the best avenues for insurance,” Head of the Episcopal Health Foundation, Elena Marks, told Houston Matters.Garson echoed this sentiment, saying that one of the primary solutions to ensuring more children are covered is to address the cost of healthcare.“We got to reduce the price of healthcare,” he said. “We’re never going to get everybody covered for health insurance unless health insurance and the cost of care goes down.” X
The Baltimore Police Department (BPD) and the FBI are searching for a murder suspect, who fatally shot a BPD homicide detective in the head Nov. 15. Baltimore Police announced this afternoon, Det. Sean Suiter, 43, who had been in grave condition overnight, has died from his injuries.Det. Sean Suiter, an 18-year veteran of the Baltimore Police Department, was shot in the head while investigating a murder in West Baltimore, Nov. 15. He died from his injuries about 24 hours after the shooting. (Courtesy photo)Suiter, an 18-year veteran of the force was a father of five, according to Baltimore Police Commissioner Kevin Davis. The police commissioner described Suiter’s assailant as, “a heartless, ruthless, soulless killer.”The manhunt for the murder suspect has encompassed a wide swath of the West Baltimore community of Harlem Park, which has been on a so-called shelter-in-place lockdown. Police cars and crime scene tape have cordoned off several blocks.The fatal shooting took place around 4:30 p.m., Nov. 15, in the 900 block of Bennett Avenue in West Baltimore, a neighborhood with a history of violence and homicide. According to police, Suiter was doing a follow up investigation to a homicide he had been working on, when he noticed a man engaged in “suspicious behavior.”“The detective approached the man, brief conversation took place, and the detective was shot in the head,” said Commissioner Kevin Davis at a press conference shortly after the shooting.Police say another officer, working in the same area, loaded the injured officer into a cruiser and started driving towards Shock Trauma, but an ambulance intercepted them and transferred Suiter to Shock Trauma.Baltimore Mayor Catherine Pugh and Baltimore City State’s Attorney Marilyn Mosby extended their prayers to Suiter’s family following the fatal shooting. “First let me ask that we just pray for the family…and let me just take a moment to remind us how dangerous our streets are at this time,” said Pugh. “We cannot have violent criminals running our streets. Too many guns on our streets…too many victims. When anyone is hurt in this city my phone rings. Everyone in each neighborhood deserves to be safe…I will be talking to the governor, we need to get control of violence in this city,” Pugh added.“This is the ultimate sacrifice to protect and serve our city. We will do our part to ensure that this perpetrator of this offense is brought to justice,” said Mosby the night of the shooting. “He deserved to come home tonight and because of the act of cowardice, he’s not.”The FBI, and the ATF are assisting Baltimore Police in the search for the suspect who is still at large, in part, by offering a $64,000 reward for any information leading to the capture of the suspect. The suspect is described as a Black male, wearing a black hoodie with a silver stripe down the back.Authorities are asking anyone with any information to text tips to 443-902-4824, call 1-866-7LOCKUP, or call Detectives at 410-396-2100.
Journal information: Applied Physics Letters Citation: Superconducting refrigerator cools via tunneling cascade (2014, June 19) retrieved 18 August 2019 from https://phys.org/news/2014-06-superconducting-refrigerator-cools-tunneling-cascade.html In a new paper published in Applied Physics Letters, a team of researchers, M. Camarasa-Gómez, et al., from Italy and France, has proposed a new design for a superconducting refrigerator in which cooling is performed in a cascade of steps. Due to this multistage operation, the refrigerator can cool down a normal metal from 0.5 K to 100 mK with improved performance compared to similar refrigerators.Superconducting refrigerators are typically composed of superconductors (S), normal metals (N), and tunnel barriers (I) that are often arranged in a symmetric configuration; for example, SINIS. When a voltage is applied to the superconductors, hot quasiparticles in the normal metal tunnel through the tunnel barriers to the superconductors, cooling the normal metal. The proposed design consists of the SINIS configuration with an additional superconducting tunnel contact on each end: S2IS1INIS1IS2. A voltage is applied to the S2 superconductors, causing hot quasiparticles to first tunnel from the normal metal to the S1 superconductors, and then to the S2 superconductors. Each tunneling event removes heat, resulting in a heat current that flows from the inside to the outside of the refrigerator. “A cascade geometry allows to cool a first superconducting stage, which is used as a local thermal bath in a second stage,” the researchers explain in their paper. This cascade cooling method requires that the components have certain properties, in particular resistances, in order to operate correctly. The researchers expect that these requirements can be easily implemented in a practical device using a combination of vanadium, aluminum, and copper.The superconducting cascade electron refrigerator could be used for cooling both microscopic and macroscopic objects, including ultracold sensors for astronomical instruments. Explore further The superconducting cascade electron refrigerator, with a S2IS1INIS1IS2 configuration, can cool a metal from 0.5 K to 100 mK in a cascading two-step process. Credit: M. Camarasa-Gómez, et al. ©2014 AIP Publishing LLC © 2014 Phys.org Quantum refrigerator offers extreme cooling and convenience 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: M. Camarasa-Gómez, et al. “Superconducting cascade electron refrigerator.” Applied Physics Letters 104, 192601 (2014). DOI: 10.1063/1.4876478 (Phys.org) —Cooling microscopic objects to temperatures near absolute zero requires unconventional refrigeration technologies. One microscale cooling method is superconducting refrigeration, in which refrigerators extract hot quasiparticles (collective excitations) from non-superconducting metals and transport them to superconducting metals. Superconducting refrigerators can cool microscopic objects down to below 1 K.