Swimming robo roach makes a splash

first_img Harvard scientists help drive new age of machines, aiming for transformative impact in medicine, on Main Street, and beyond In nature, cockroaches can survive underwater for up to 30 minutes. Now, a robotic cockroach can do even better. Harvard’s Ambulatory Microrobot, known as HAMR, can walk on land, swim on the surface of water, and walk underwater for as long as necessary, opening up new environments for this little bot to explore.This next generation HAMR uses multifunctional foot pads that rely on surface tension and surface tension induced buoyancy when HAMR needs to swim but can also apply a voltage to break the water surface when HAMR needs to sink. This process is called electrowetting, which is the reduction of the contact angle between a material and the water surface under an applied voltage. This change of contact angle makes it easier for objects to break the water surface.Moving on the surface of water allows a microrobot to evade submerged obstacles and reduces drag. Using four pairs of asymmetric flaps and custom designed swimming gaits, HAMR robo-paddles on the water surface to swim. Exploiting the unsteady interaction between the robot’s passive flaps and the surrounding water, the robot generates swimming gaits similar to that of a diving beetle. This allows the robot to effectively swim forward and turn.“This research demonstrates that microrobotics can leverage small-scale physics — in this case surface tension — to perform functions and capabilities that are challenging for larger robots,” said Kevin Chen, a postdoctoral fellow at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) and first author of the paper.The most recent research is published in the journal Nature Communications.,“HAMR’s size is key to its performance,” said Neel Doshi, graduate student at SEAS and co-author of the paper.  “If it were much bigger, it would be challenging to support the robot with surface tension and if it were much smaller, the robot might not be able to generate enough force to break it.”HAMR weighs 1.65 grams (about as much as a large paper clip), can carry 1.44 grams of additional payload without sinking and can paddle its legs with a frequency up to 10 Hz. It’s coated in Parylene to keep it from shorting under water.Once below the surface of the water, HAMR uses the same gait to walk as it does on dry land and is just as mobile. To return to dry land HAMR faces enormous challenge from the water’s hold. A water surface tension force that is twice the robot weight pushes down on the robot, and in addition the induced torque causes a dramatic increase of friction on the robot’s hind legs. The researchers stiffened the robot’s transmission and installed soft pads to the robot’s front legs to increase payload capacity and redistribute friction during climbing. Finally, walking up a modest incline, the robot is able break out of the water’s hold. “This robot nicely illustrates some of the challenges and opportunities with small-scale robots,” said senior author Robert Wood, Charles River Professor of Engineering and Applied Sciences at SEAS and core faculty member of the Harvard Wyss Institute for Biologically Inspired Engineering. “Shrinking brings opportunities for increased mobility – such as walking on the surface of water – but also challenges since the forces that we take for granted at larger scales can start to dominate at the size of an insect.” Next, the researchers hope to further improve HAMR’s locomotion and find a way to return to land without a ramp, perhaps incorporating gecko-inspired adhesives or impulsive jumping mechanisms.This research was co-authored by Benjamin Goldberg and Hongqiang Wang.  It was supported by the Harvard John A. Paulson School of Engineering and Applied Science, the Wyss Institute for Biologically Inspired Engineering and the Office of Naval Research’s Defense University Research Instrumentation Program. Related Onward and upward, robotslast_img read more

Search For Jamestown Runaway Ends After Police Locate Teen

first_imgImage by the Jamestown Police Department / Facebook page.UPDATE:JAMESTOWN – The search for a runaway teen in Jamestown has ended.Jamestown Police say officers have been looking for 17-year-old Julliuss Jenkins since mid-November.Juvenile detectives received word from his friends and family on Wednesday who say Jenkins has been in contact with them. Police say the teen is wanted for “avoiding charges in a criminal matter” and never appeared to be in danger.They sent a message to their social media followers earlier Wednesday seeking leads in the search.ORIGINAL:JAMESTOWN – The Jamestown Police Department is seeking help in locating a missing 17-year-old male wanted in connection with a crime.Police, in a post on social meida, says Julliuss C. Jenkins, 17, has been reported missing since Nov. 13.Anyone with information regarding the whereabouts of Jenkins can call Jamestown Police at 716-483-7537.Jamestown Police Captain Robert Samuelson tells WNY News Now that Jenkins is “avoiding charges in a criminal matter” in the City of Jamestown.He adds that Jenkins doesn’t appear to be in danger. Share:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to email this to a friend (Opens in new window)last_img read more

Law ministry closes building due to local coronavirus spread

first_imgBambang added that he would confirm at a later date on when the building would reopen.The Ex-Sentra Mulia is the 50th building in the capital to be temporarily closed due to confirmed infection among workers at the premises.Jakarta Manpower, Transmigration and Energy Agency head Andri Tansyah previously said that the administration had closed 14 office buildings each in East Jakarta and West Jakarta, 12 in Central Jakarta, five in West Jakarta and four in North Jakarta.The seven other buildings – four in South Jakarta and one each in Central Jakarta, West Jakarta and North Jakarta – were locked down for violating the health protocol despite several warnings. Topics : The Law and Human Rights Ministry has closed one of its buildings at the ministerial compound in Setiabudi, South Jakarta, after several employees tested positive for COVID-19.Law and Human Rights secretary-general Bambang Rantam Sariwanto stated in a letter that the Ex-Sentra Mulia building, that houses the Immigration Directorate General after several civil servants were found to have contracted the virus, would be locked down from Aug. 11 to Aug. 21, during which time the entire building would be sterilized and disinfected.“All high-ranking officials and civil servants who work in the Ex-Sentra Mulia building will continue to work from their respective homes or residences and shall stick to the WFH [work from home] procedures,” he said in the letter issued on Tuesday. center_img As regards health protocol violations, the agency had also issued an initial warning to 389 businesses and a second warning 101 businesses on Tuesday.“For the time being, we cannot release the [companies’ names],” Andri said on Wednesday, as reported in kompas.com.The nation’s capital has seen a daily rise in COVID-19 cases since the Jakarta provincial administration started easing the large-scale social restrictions (PSBB) in early June, with the administration still struggling to prevent the emergence of transmission clusters at office buildings and houses of worship.On Tuesday, Jakarta recorded 462 new cases of COVID-19 infection, bringing the cumulative tally to 26,624 with 944 COVID-19 deaths and 16,630 patients recovered. With 128,776 confirmed cases nationwide, Indonesia has the second highest tally among Southeast Asian countries after the Philippines, which has 139,538 cases.last_img read more

The reason Mikel Arteta has axed Arsenal star Ainsley Maitland-Niles

first_imgAdvertisement Ainsley Maitland-Niles hasn’t featured in the Premier League for Arsenal since January 18 (Picture: Getty)Ainsley Maitland-Niles continues to pay the price for failing to meet Mikel Arteta’s ‘non-negotiables’ and hasn’t featured in the Premier League since mid-January, despite Arsenal’s continuing problems at right-back.January loan recruit Cedric Soares is still yet to make his debut following his arrival from Southampton due to a knee injury, while Hector Bellerin has struggled to find his best form and maintain full fitness since returning to the side after 10 months out, having undergone major knee surgery. Maitland-Niles starred in the New Year’s Day win over Manchester United but has started only once in the Premier League since then and featured only briefly as a substitute in the FA Cup and Europa League. AdvertisementAdvertisementSokratis Papastathopoulos has been tasked with filling in at full-back and although the experienced Greek international has performed adequately, he has lacked the attacking thrust provided by Arsenal’s conventional full-backs. ADVERTISEMENTAccording to The Athletic’s David Ornstein, speaking on the Ornstein and Chapman podcast, Arteta’s decision to exile the 22-year-old is down to the player having been late for several training sessions. More: Arsenal FCArsenal flop Denis Suarez delivers verdict on Thomas Partey and Lucas Torreira movesThomas Partey debut? Ian Wright picks his Arsenal starting XI vs Manchester CityArsene Wenger explains why Mikel Arteta is ‘lucky’ to be managing ArsenalUpon succeeding Unai Emery, Arteta outlined his intention to take a hard-line stance with any player who failed to put the team ahead of their individual aspirations and would have been irked by Maitland-Niles publicly airing his dissatisfaction at having been asked to play out of position.Asked how the youngster could force his way back into the reckoning, Arteta said last week: ‘Ainsley needs to put his head down and work hard.‘Show me every day in training that he wants it more than anyone else, he wants to play for this club and fight for his place.’ Metro Sport ReporterTuesday 10 Mar 2020 12:44 pmShare this article via facebookShare this article via twitterShare this article via messengerShare this with Share this article via emailShare this article via flipboardCopy link3.3kShares Man City v Arsenal: Arteta previewTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Play VideoLoaded: 0%0:00Progress: 0%PlayMuteCurrent Time 0:00/Duration Time 5:36FullscreenMan City v Arsenal: Arteta previewhttps://metro.co.uk/video/man-city-v-arsenal-arteta-preview-2126842/This is a modal window.Beginning of dialog window. Escape will cancel and close the window.TextColorWhiteBlackRedGreenBlueYellowMagentaCyanTransparencyOpaqueSemi-TransparentBackgroundColorBlackWhiteRedGreenBlueYellowMagentaCyanTransparencyOpaqueSemi-TransparentTransparentWindowColorBlackWhiteRedGreenBlueYellowMagentaCyanTransparencyTransparentSemi-TransparentOpaqueFont Size50%75%100%125%150%175%200%300%400%Text Edge StyleNoneRaisedDepressedUniformDropshadowFont FamilyProportional Sans-SerifMonospace Sans-SerifProportional SerifMonospace SerifCasualScriptSmall CapsReset restore all settings to the default valuesDoneClose Modal DialogEnd of dialog window.MORE: Olympiakos targeted Bukayo Saka to knock Arsenal out of Europa LeagueMORE: Ian Wright rates Arsenal’s top six chances ahead of Manchester City clash Advertisement Comment The reason Mikel Arteta has axed Arsenal star Ainsley Maitland-Nileslast_img read more

Inter Miami plot move for Real Madrid midfielder

first_imgDavid Beckham’s Inter Miami CF are reportedly determined to bring Real Madrid midfielder James Rodriguez to the club this summer.Advertisement Promoted ContentWhat Is A Black Hole In Simple Terms?6 Ridiculous Health Myths That Are Actually TrueFantastic-Looking (and Probably Delicious) Bread ArtDid You Know There’s A Black Hole In The Milky Way?7 Universities In The World Where Education Costs Too MuchCouples Who Celebrated Their Union In A Unique, Unforgettable WayWhy Do So Many Digital Assistants Have Feminine Names & Voices?These Are India’s 7 Most Stunning Models11 Most Immersive Game To Play On Your Table TopThis Guy Photoshopped Himself Into Celeb Pics And It’s HystericalWhat Happens To Your Brain When You Play Too Much Video Games?6 Interesting Ways To Make Money With A Drone Loading… center_img According to reports from Mundo Deportivo, former Los Blancos star Beckham has personally contacted Florentino Perez over a possible deal.Colombian international Rodriguez has been linked with a move away from the Spanish capital this summer, after seeing his first team opportunities limited in 2019-20.Premier League side Everton are rumoured to be keen on a summer move for the 28-year old, with Carlo Ancelotti eyeing a reunion with his former player.Read Also: Manchester United keep vigil on La Liga starBeckham is confident of securing a deal, as part of the club’s plan to secure ‘elite signings’ for the MLS side, and Rodriguez’s reported €40m asking price is within their budget.The former England international has also been linked with offers for other La Liga stars, with Gareth Bale and Arturo reportedly on his radar, alongside Manchester City skipper David Silva.FacebookTwitterWhatsAppEmail分享 last_img read more

Chelsea can win title again without signing lots of players, insists Matic

first_imgNemanja Matic believes Chelsea are strong enough to win the Premier League title again, despite not making a big splash in the transfer market like some of their rivals.The London club could add John Stones to their squad but apart from that they have simply brought in striker Radamel Falcao for Didier Drogba and goalkeeper Asmir Begovic for Petr Cech.However, rivals Manchester United have signed a raft of new players, including Memphis Depay, Bastian Schweinsteiger, Morgan Schneiderlin and Matteo Darmian. Manchester City meanwhile have added Raheem Sterling from Liverpool for £49 million, as well as Fabian Delph and Patrick Roberts.But Matic is unfazed. “I think last year Man United, Man City, Arsenal, Liverpool and Tottenham also had good teams, very good teams,” he said.“Our team was champion and a team that is champion is ready for everything. I think we have enough. “Maybe other teams will sign lots of players but that may be worse for them. It is sometimes better to stay with the same team for stability. I am sure if we stick to doing what we are capable of, we can achieve a lot this season.“The team which is the champions has enough to play the next season and do the same. I think we lost just four games in all competitions. If we do the same again next season, this will be enough to be champions.”Matic also admitted he has mixed feelings about the departure of goalkeeper Cech.“’It is going to be a very important signing for Arsenal,” added the midfielder. “I am not happy because of that. We know that he is very professional. He is one of the best keepers. And I hope this season he does not perform as he did here for 10, 11 years. “I am happy for him because he gets to stay in London, which for him and his family was very important. I wish him all the best.”Matic’s team-mate and compatriot Branislav Ivanovic agreed.“’I can say only 500 times thank you to [Cech] – he gave us so much pleasure, making the history of the club, winning trophies,” said the Serb.“As a person we will miss him in the changing room. His decision was he wanted to play and I wish him all the best personally. Just try not to win any trophies.”–last_img read more

Seahawks and Boeing Announce The Bridge Music Project as Final 2018…

first_imgFacebook40Tweet0Pin0Submitted by The Bridge Music ProjectThe Seattle Seahawks and Boeing announced today the final local organization to receive 2018 Seahawks home game tickets as part of the Legion of Youth Powered by Boeing (LOY) program. The Bridge Music Project of Thurston County has been selected as the eighth and final organization for the 2018 season, joining seven other local youth organizations that were announced earlier this season. The eighth spot was held open for fans to submit nominations of deserving organizations in their communities. The Bridge Music Project supports music and songwriting programs that mentor youth to use music and songwriting as tools to deal with life’s challenges.Photo courtesy: The Bridge Music ProjectYouth involved in The Bridge Music Project will receive 100 tickets for participants and their chosen guests to attend the Dec. 2 Seahawks home game versus the San Francisco 49ers. The group was invited to attend Seahawks practice at the Virginia Mason Athletic Center today, where they were surprised with the news by Seahawks LB KJ Wright, who helped Boeing and the Seahawks choose the group as part of the selection committee.This year, the Legion of Youth Powered by Boeing program received more than double the nominations for this final spot compared to last year. Because of the volume and quality of nominations from the community, the Seahawks and Boeing selected six additional organizations from this year’s nominations to participate in the 2019 LOY program. They will be announced next year.“The Seattle Seahawks and Boeing are both a large community presence here in the Northwest. To have them acknowledge the work we do to empower youth through music is a huge honor. This sends the message to our youth that they matter and their voices deserve to be heard,” said Bobby Williams, Executive Director of The Bridge Music Project.“Boeing is proud to partner with the Seahawks, a team so many of our employees are passionate about, to help provide this unique experience to local kids who are working hard to the do the right thing,” said Kevin McAllister, President and CEO of Boeing Commercial Airplanes. “Empowering local youth is part of our commitment to giving back to the local communities where our employees live and work.”The Seahawks and Boeing are committed to helping provide safe, healthy activities for local youth. The Legion of Youth Powered by Boeing program is designed to recognize and reward students who are committed to their school work, demonstrate leadership, and are active in the community. It also recognizes kids who may be facing difficult challenges and need a positive boost.Started in 2014, the Legion of Youth Powered by Boeing program seeks to empower youth in Washington by providing Seahawks game tickets to community organizations that serve kids throughout the Northwest. LOY provides 100 game tickets to a group or organization each regular season home game.The 2018 recipients are as follows: 23 vs. Dallas Cowboys: Nerdy Girls7 vs. Los Angeles Rams: FIRST Washington4 vs. Los Angeles Chargers: Techbridge15 vs. Green Bay Packers: Work Force Development Center2 vs. San Francisco 49ers: The Bridge Music Project10 vs. Minnesota Vikings: Youth in Focus23 vs. Kansas City Chiefs: JUMA30 vs. Arizona Cardinals: Washington MesaFor more information or to apply for the program, visit www.seahawks.com/legionofyouth. For more information about Boeing’s partnerships and investments in Washington, visit www.boeing.com/washington.About The Bridge Music ProjectThe Bridge Music Project (The Bridge) is a Thurston County based non-profit organization that teaches at-risk youth how music and writing can be used as tools to deal with life’s challenges. This is done through songwriting workshops where youth work together to write, record and perform original music that shares their stories. Many of the youth participating in The Bridge have experienced challenges such as foster care, homelessness and incarceration. For more visit www.bridgemusicproject.orglast_img read more