A manmade material that mimics the curling of the mimosa leaflet

first_img Play Static self-assembling properties of circular-shaped Janus bilayer demonstrating artificial tropism in response to a microdroplet. Credit: Wong et al. Sci. Adv. 2016; 2 : e1600417 PausePlay% buffered00:0000:00UnmuteMuteDisable captionsEnable captionsSettingsCaptionsDisabledQuality0SpeedNormalCaptionsGo back to previous menuQualityGo back to previous menuSpeedGo back to previous menu0.5×0.75×Normal1.25×1.5×1.75×2×Exit fullscreenEnter fullscreen In addition to providing a roadmap for the development of a new class of self-organizing materials, the team believes their material could be used in a wide variety of applications, ranging from sensors built into clothes (which could self-activate when exposed to sweat) to sensors made for responding to other bodily fluids. It might even prove suitable for harvesting water from fog or for creating micro-robotic devices programmed by shape. PausePlay% buffered00:0000:00UnmuteMuteDisable captionsEnable captionsSettingsCaptionsDisabledQuality0SpeedNormalCaptionsGo back to previous menuQualityGo back to previous menuSpeedGo back to previous menu0.5×0.75×Normal1.25×1.5×1.75×2×Exit fullscreenEnter fullscreen PausePlay% buffered00:0000:00UnmuteMuteDisable captionsEnable captionsSettingsCaptionsDisabledQuality0SpeedNormalCaptionsGo back to previous menuQualityGo back to previous menuSpeedGo back to previous menu0.5×0.75×Normal1.25×1.5×1.75×2×Exit fullscreenEnter fullscreen Researchers create tiny pump that provides continuous and spontaneous antigravity water delivery (Phys.org)—A combined team of researchers from the Australian National University and City University of Hong Kong has created a material that is capable of mimicking the action of a mimosa leaflet when it is touched. In their paper published in the journal Science Advances, the team describes their material and how it reacts when a drop of liquid is deposited onto its surface. PausePlay% buffered00:0000:00UnmuteMuteDisable captionsEnable captionsSettingsCaptionsDisabledQuality0SpeedNormalCaptionsGo back to previous menuQualityGo back to previous menuSpeedGo back to previous menu0.5×0.75×Normal1.25×1.5×1.75×2×Exit fullscreenEnter fullscreen © 2016 Phys.org Explore furthercenter_img More information: W. S. Y. Wong et al. Mimosa Origami: A nanostructure-enabled directional self-organization regime of materials, Science Advances (2016). DOI: 10.1126/sciadv.1600417AbstractOne of the innate fundamentals of living systems is their ability to respond toward distinct stimuli by various self-organization behaviors. Despite extensive progress, the engineering of spontaneous motion in man-made inorganic materials still lacks the directionality and scale observed in nature. We report the directional self-organization of soft materials into three-dimensional geometries by the rapid propagation of a folding stimulus along a predetermined path. We engineer a unique Janus bilayer architecture with superior chemical and mechanical properties that enables the efficient transformation of surface energy into directional kinetic and elastic energies. This Janus bilayer can respond to pinpoint water stimuli by a rapid, several-centimeters-long self-assembly that is reminiscent of the Mimosa pudica’s leaflet folding. The Janus bilayers also shuttle water at flow rates up to two orders of magnitude higher than traditional wicking-based devices, reaching velocities of 8 cm/s and flow rates of 4.7 μl/s. This self-organization regime enables the ease of fabricating curved, bent, and split flexible channels with lengths greater than 10 cm, demonstrating immense potential for microfluidics, biosensors, and water purification applications.Press release Citation: A man-made material that mimics the curling of the mimosa leaflet (2016, June 27) retrieved 18 August 2019 from https://phys.org/news/2016-06-man-made-material-mimics-mimosa-leaflet.html Play Mimosa Origami assembly of the Janus bilayer strips performing double right-angle turns on a superhydrophobic PS-PDMS substrate. Credit: Wong et al. Sci. Adv. 2016; 2 : e1600417 Play Modular microfluidics: Janus-based Mimosa Origami strips with double-ended bulbs on a superhydrophobic PS-PDMS substrate showing in-channel droplet mixing. Credit: Wong et al. Sci. Adv. 2016; 2 : e1600417 Journal information: Science Advances As the researchers note, nature is filled with examples of living systems that react to stimuli by engaging in self-organization behaviors. One such example is the fern-like mimosa plant, it has multiple leaflets along individual twigs that are each independently sensitive to touch—such stimuli (such as children over the generations having some fun with their friends) causes the leaflet to curl up into a hollow tube shape resembling a very small straw. Developing materials with similar characteristics is highly desirable because it allows for creating unique products, such as very low power sensors.In this new effort, the researchers created the new material by fashioning stacks of multi-function layers of a Janus nanoparticle based material (offering opposite hydrophilic-hydrophobic properties) to a bottom layer made of polyvinyl chloride microfibers. The result was a thin length of flat white material with a larger round formation at one end. When a liquid was dropped onto the round formation, the liquid was pushed, through self-action, by the material all the way to the other end—as it was pushed, the material curled from one end to the other, resulting in what looked like an ordinary straw. The researchers report that the action was fast, taking just 33 milliseconds to get started. They note also that the self-action was reversible as well—as the material dried, it flattened. Play Modular microfluidics: Janus-based Mimosa Origami strips at a T-junction, showcasing double-ended split for potential in multichannel capabilities. Credit: Wong et al. Sci. Adv. 2016; 2 : e1600417 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.last_img read more

Jeffrey Epsteins Criminal Case Closed Af

first_img Scott Heins by NPR News Colin Dwyer 8.29.19 4:30pm Less than three weeks after Jeffrey Epstein’s apparent suicide in prison, a federal judge has formally closed the sex trafficking case against the wealthy financier. On Thursday, Judge Richard Berman of the Southern District of New York approved a request filed by prosecutors to dismiss the charges.”Because Jeffrey Epstein, the defendant, died while this case was pending, and therefore before a final judgment was issued, the Indictment must be dismissed under rule of abatement,” Berman wrote, referring to the rule under which, if a defendant dies midway through a case, their indictment is wiped clean.The decision brings an unsatisfying end to a criminal case that captured the attention of the country — but it does not close the door on future legal matters involving his estate or his associates. Several of Epstein’s accusers have filed major lawsuits against his estate since he was discovered unresponsive in his cell earlier this month, and federal authorities have repeatedly vowed to pursue the co-conspirators who supported his alleged operation.Prosecutors and accusers say that from at least the early 2000s, Epstein and his network of friends recruited girls as young as 14 years old, misled them, and forced them to have sex with him and other prominent men. Though suspicions long lingered around the financier, he eluded attempts to get him to stand trial — including in 2008, when he accepted a lenient plea deal that meant only about a year in jail for the sex crime he admitted.The deal was so lenient, in fact, that after its details surfaced, the controversy led to the resignation of Labor Secretary Alexander Acosta, who negotiated the agreement back when he was a U.S. attorney in Florida.This time around, Epstein’s accusers at least got the opportunity to tell their stories in an unusual hearing on Tuesday. At that hearing, more than a dozen women came forward to tell stories of how Epstein tricked, coerced and sexually assaulted them, often when they were still underage.”Jeffrey Epstein ruined me. His recruiter ruined me,” said one accuser, who signed her statement “Jane Doe” and released it through her attorney, Lisa Bloom. “The far reaching consequences of that day [that I was recruited] ruined my family’s lives.”Another accuser, Teala Davies, succinctly summed up the hearing for reporters outside the Manhattan courthouse afterward: “All I’m going to say is today was a day of power and strength.”It was also a day of disappointment. Many of the women in the courtroom expressed just how devastated they were to receive the news that he had taken his own life and once more avoided trial.But it’s not over. At the hearing Tuesday, prosecutors vowed that the dismissal of charges “in no way lessens the government’s resolve to stand up for the victims in this case.” The next day, the FBI released a new call for his alleged victims to contact the agency with their stories.Copyright 2019 NPR. To see more, visit NPR. Jeffrey Epstein’s Criminal Case Closed After His Death… last_img read more

Google to charge a licensing fee from Androidbased smartphone vendors in the

first_imgIn compliance with the EU regulations set up when Google was fined $5 Million in July, for breaching EU antitrust laws, Google has made major changes to its licensing policy. Last week, Google filed its appeal against the Commission’s decision at the General Court of the European Union. While the appeal is pending, they have now informed the European Commission of the changes made in their policy. Read More: A quick look at E.U.’s antitrust case against Google’s Android Google is splitting the license for its standard apps from Chrome and the official search app. This means that if a company wants to use some of Google apps (Gmail and YouTube for instance) but also use other competing apps (Bing for search and Firefox for browsing), they can do so in the European Economic Area (EEA), albeit with an associated cost. Hiroshi Lockheimer, Senior Vice President, Platforms & Ecosystems, mentioned in the Google blog, “Since the pre-installation of Google Search and Chrome together with our other apps helped us fund the development and free distribution of Android, we will introduce a new paid licensing agreement for smartphones and tablets shipped into the EEA. He also points out that, “ Android will remain free and open source.” Google will also offer separate licenses to the Google Search app and to Chrome. They will also provide commercial agreements to partners for the non-exclusive pre-installation and placement of Google Search and Chrome, although Google noted that pre-installed competition was already possible. Android vendors in the EEA are also allowed to make forked versions of Android while still distributing Google apps. All the licensing changes will be effective for devices launched after October 29th. It is also likely that companies in Europe that would have to pay for Google apps, may pass the licensing fee to consumers in the form of higher device prices. Lockheimer added that they will continue with their commitment to the Android ecosystem saying, “We’ll be working closely with our Android partners in the coming weeks and months to transition to the new agreements. And of course, we remain deeply committed to continued innovation for the Android ecosystem.” Read the official announcement on the Google blog. Read Next OK Google, why are you ok with mut(at)ing your ethos for Project DragonFly? Google takes steps towards better security, introduces new API policies for 3rd parties and a Titan Security system for mobile devices. Google reveals an undisclosed bug that left 500K Google+ accounts vulnerable in early 2018; plans to sunset Google+ consumer versionlast_img read more

Insight LATAM team up for new South America promotion

first_imgInsight, LATAM team up for new South America promotion TORONTO — Insight Vacations’ new South America deal, in partnership with LATAM, offers a $500 Economy Class air credit per couple or an $800 Business Class air credit per couple, plus 10% off land.The deal is valid for bookings made by Sept. 9, 2016 for travel Jan. 1 – July 1, 2017.Insight says it’s celebrating its expanded 2017 Luxury Gold South America portfolio. “We are pleased to be partnering with LATAM to offer these incredible air savings to South America for our Canadian travellers,” said Cris David, president, Insight Vacations Canada. “From the wonders of Machu Picchu, the spectacular Iguassu Falls, to the incredible wildlife in the Galapagos Islands, Insight Vacations guests will experience the natural beauty and vibrant culture of these regions and be there sooner thanks to this generous offer by our valued LATAM partners.”The limited time offer is valid on the following Luxury Gold journeys: Treasures of the Incas; Classic South America; Grand Tour of South America; and the Quito and Galapagos extension. For more information contact your local Sales Manager. Travelweek Group Share Tags: LATAMcenter_img Friday, August 19, 2016 Posted by << Previous PostNext Post >>last_img read more

Chug or check Man opts to check single can of beer for

first_img MELBOURNE — Nothing comes between a man and his beer, as one Aussie has undoubtedly proven.According to The Daily Dot, a male passenger flying from Melbourne, Australia to Perth with Qantas Airlines found himself in an unfortunate predicament at the airport: What to do with his unopened can of beer?Rather than toss the can in the trash (heaven forbid!) or discreetly chug it prior to passing security, the man (who wished to remain anonymous) did what any beer lover would do – he checked his single can of beer as if it were luggage.He told Daily Mail that he did it as a joke; “I half didn’t expect it to come out the other end,” he said. But not only did it arrive safely in Perth, it was situated front and centre – a place of honour – on the baggage carousel ahead of all other items.More news:  Can you guess the top Instagrammed wedding locations in the world?The beer can’s journey was photographed by amused passengers and uploaded to social media. We wouldn’t be surprised if it already has its own Instagram account and frequent flier card. Posted by Travelweek Group << Previous PostNext Post >> Sharecenter_img Tags: LOL Chug or check? Man opts to check single can of beer for flight Wednesday, July 12, 2017 last_img read more

Goway opens up sun destinations with new offers plus a Seychelles fam

first_imgGoway opens up sun destinations with new offers plus a Seychelles fam << Previous PostNext Post >> Tags: Goway Posted by TORONTO — Goway is offering savings worth up to $1,650 off the cost of a 12-day Seychelles vacation, including air, plus the company is putting together a limited edition Seychelles fam so agents can check out the beautiful destination for themselves.Eligible Seychelles departures for clients are available Nov. 1 –Dec. 22, 2019, and again Jan. 6 – March 31, 2019.Meanwhile Goway is inviting its travel agent partners to discover the islands for themselves with a FAM trip to Seychelles in October 2018. Spots are limited and agents are asked to sign up for pre-boarding at gowayagent.com.Goway is also promoting Moorea in 2019, with savings of up to $1,100 on the company’s popular eight-day Moorea vacation including airfare.Eligible departures run from February 16 to March 2, 2019.Fiji is another great option in the South Pacific, says Goway. Goway is offering a saving of $1,250 on this 10-day trip, with departures available Nov. 1 – Nov. 20, 2018, and January 21 – March 21, 2019.More news:  ‘Turn around year’ for TPI brings double-digit growthClients can also book the Maldives Escape including airfare. Globetrotters who book by Sept. 28 will receive big savings of $8,300 on this 11-day trip, with departures up until Sept. 28, 2018 and during May 2019.Closer to home Goway is also offering $800 off its 10-day Pride of America Cruise, a roundtrip itinerary from Honolulu that includes two nights’ accommodation in Honolulu, and a seven-night cruise, and departs Jan. 17, 2019.All savings are per couple, and eligible departures must be booked by Sept. 28, 2018, with the exception of the Fiji Escape including airfare which must be booked by Aug. 31, 2018.center_img Travelweek Group Share Thursday, August 23, 2018 last_img read more