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Gecko-inspired multipurpose gripper

  • 26 May 2017

An elastic membrane covered with tiny fibres paired with a pressure differential enables a new soft gripper system with a high adhesion performance even on curved surfaces

Robots generally need a gripper that adapts to three-dimensional surfaces. Such a gripper needs to be soft to adapt to a great variety of geometries, but not too soft, as it will detach easily and not be able to bear weight for very long. Researchers working with Metin Sitti at the Max Planck Institute for Intelligent Systems in Stuttgart developed a membrane equipped with microscopic fibres inspired by the fine hairs on a gecko's foot and attached it to a suction cup-like flexible body. An internal pressure differential ensures perfect conformation of the flexible gripper to a wide variety of surfaces and equally distributes the load over the entire contact interface. As a result, the researchers suppressed load induced stress concentrations at the edges, which strongly reduced the adhesion. The gripper demonstrates a 14-times higher adhesion than grippers without this load sharing mechanism.



Functional Microrobots Could Harbor Bioengineering Apps

  • 22 May 2017

HospiMedica.com

A new study suggests that untethered micron-scale mobile robots can navigate and non-invasively perform specific tasks inside hard-to-reach body sites. Currently being designed, fabricated, and tested at the Max Planck Institute for Intelligent Systems and Carnegie Mellon University, the first-generation microrobots will be able to deliver therapeutics and other cargo to targeted body sites, as well as to enclosed organ-on-a-chip microfluidic devices with live cells. A new two-step approach is use to provide the microrobotic devices with desirable functions. The first step uses three-dimensional (3D) laser lithography to crosslink light-responsive polymers.

Metin Sitti Hakan Ceylan Ceren Garip


In Zukunft mit Gefühl

  • 20 May 2017

Roboter können erstaunliche Dinge. Doch unser Tastsinn ist ihnen noch überlegen. Warum sich das bald ändern könnte – und was das heißt

Katherine Kuchenbecker


Bacteria-Driven Drug Delivery Carriers: A Paradigm Shift

  • 18 May 2017

Advanced Science News

Congrats to Babak, Oncay and Jiang that their paper, “Bioadhesive bacteria-driven microswimmers for targeted drug delivery in the urinary and gastrointestinal tracts”, is highlighted on their news website

Metin Sitti Babak Mostaghaci Oncay Yasa Jiang Zhuang


Tübingen exibition: "Origins" - Steps of Humankind

  • 18 May 2017

Opening of the exibition: Friday, May 19, 2017, 7:00 p.m., Schloß Hohentübingen (free entrance)

The exhibition in the Museum Ancient Cultures (Hohentübingen Castle) will focus on the most important steps of humankind. Our institute supports the last part of the exibition "Origin of digital innovation" with a Nao robot and the Mosh Camera App.


3D-microrobots voor minuscule chirurgie

  • 16 May 2017

fpt-vimag.n

Een kleine robot die door een eenvoudige medische injectie in het menselijk lichaam wordt gebracht en daar rechtstreeks en doelgericht een niet te opereren tumor bestrijdt. Dit klinkt misschien een beetje als science fiction, maar onderzoekers werken momenteel druk aan het moderniseren van de gezondheidszorg met behulp van bio-engineering. De uitdagingen zitten vooral in het ontwerp, productieproces en de codering van de microrobots die dit moeten gaan realiseren.

Metin Sitti Hakan Ceylan Ceren Garip


Sticky gripper can lift flasks and tomatoes

  • 16 May 2017

Nature.com A gecko-inspired adhesive could help robots to climb bumpy walls and grasp fragile objects.

The hairs that make geckos’ feet sticky have inspired the invention of adhesives for flat surfaces, but creating strong adhesives that can grab complex, 3D objects has proved a challenge. Metin Sitti at the Max Planck Institute for Intelligent Systems in Stuttgart, Germany, and his colleagues spread elastic microfibres, or ‘hairs’, across a soft, stretchy membrane, allowing it to mould and stick to a surface. The team attached this to a ‘gripper’ layer. Reducing the pressure inside the gripper spreads the load evenly across the sticky membrane, strengthening the bond between it and the target object. Changing the pressure in the system increased the membrane’s ‘stickiness’ 14-fold, allowing the device to suspend a variety of hard and soft objects, from fluid-filled flasks to tomatoes.

Metin Sitti Sukho Song Dirk Drotlef


Sciencemag.org Gecko-inspired gripper could help robots climb walls

  • 15 May 2017

“The design of the backing is key to making these adhesives function properly for most applications, and this is a very exciting development.” The technology has several potential applications, says Metin Sitti, an author of the study and a mechanical engineer at the Max Planck Institute ...

Metin Sitti Sukho Song Dirk Drotlef


3D-Mikroroboter für minimal-invasive Chirurgie (Medizin Aspekte)

  • 11 May 2017

medizin-aspekte.de

Ein kleiner Roboter, der mühelos mittels Injektion in den menschlichen Körper gelangt, die gesunden Organe meidet und das Ziel – einen nicht operablen Tumor – findet und direkt behandelt… Klingt dies nicht nach Science-Fiction? Um es Wirklichkeit werden zu lassen, arbeiten immer mehr Forscher an der Vision, wesentliche Bereiche der Medizin und Biotechnologie zu revolutionieren. Das Design und die Herstellung solcher Mikroroboter, sowie auch die Ausstattung mit den entsprechenden Funktionalitäten, stellen jedoch noch große Herausforderungen dar.

Metin Sitti Hakan Ceylan Ceren Garip