Welcome!

News Feed Item

Carnegie Mellon's Metin Sitti Develops System for Replicating How Geckos Keep Webbed Feet Sticky and Clean

CMU Researchers Say Synthetic Gecko-Adhesive Has Implications in Variety of Industries

PITTSBURGH, Feb. 19, 2014 /PRNewswire/ -- Geckos are wizards at sticking to any kind of hard surface repeatedly. And they also are very adept at keeping their sticky adhesive feet clean even while running through dirt-infested jungles and deserts. So what's their secret?

Carnegie Mellon University in Pittsburgh, Pa., is a distinctive, world-class research university that blends cutting-edge programs across many disciplines including business, computer science, the arts and sciences, engineering and public policy.

Carnegie Mellon University's Metin Sitti and his research team have discovered that the gecko remains clean in dirty environments by shedding contaminants with each step. Sitti's team consists of CMU's Yigit Menguc and Uyiosa Abusomwan, and Hendrik Hoefscher and Michael Rohrig of Karlsruhe Institute of Technology in Germany.

In a paper to appear Feb. 19 in the Interface Journal of the British Royal Society, Sitti and his team successfully emulated the contact self-cleaning ability of geckos in nature.

"We performed contact self-cleaning experiments with three different sizes of mushroom-shaped elastomer microfibers and five different sizes of spherical silica contaminants. Using a load-drag-unload dry contact cleaning process similar to the loads acting on the gecko foot during climbing, our fully-contaminated synthetic gecko-adhesive could recover lost stickiness and lost adhesion at a rate comparable with that of the gecko," said Sitti, head of CMU's NanoRobotics Lab and a professor of mechanical engineering.  

Sitti, who was recently inducted as a fellow of the Institute of Electrical and Electronics Engineers (IEEE), reports that the relative size and scale — the ratio of the average contaminant particle diameter to the fiber tip diameter — determine the mechanism and cleaning performance of the sticky adhesive. His team found that contaminant particle rolling and particle embedding among fiber spacing during the drag process were the main mechanisms of contact self-cleaning.     

"Our work has implications for use of this synthetic gecko-adhesive in a variety of industry sectors including, defense, consumer products, sports, automotive, medicine, aerospace and robotics applications," Sitti said.

This research has been funded by the Civil, Mechanical and Manufacturing Innovation Division of the National Science Foundation.

Sitti also is using his work with geckos to inspire new methods to print electronics on complex surfaces. Along with researchers, Sitti developed a reversible adhesion method for printing electronics on a swath of complex surfaces such as clothing, plastic and leather. His team designed a square polymer stamp with pyramid micro-tips that allows them to control adhesion strength.

"We are very close to commercializing the gecko-inspired synthetic adhesives for use in many industry sectors," said Sitti, also founder and president of nanoGriptech, Inc., a 2009 CMU spinoff company.           

About Carnegie Mellon University: Carnegie Mellon (www.cmu.edu) is a private, internationally ranked research university with programs in areas ranging from science, technology and business, to public policy, the humanities and the arts. More than 12,000 students in the university's seven schools and colleges benefit from a small student-to-faculty ratio and an education characterized by its focus on creating and implementing solutions for real problems, interdisciplinary collaboration and innovation. A global university, Carnegie Mellon's main campus in the United States is in Pittsburgh, Pa. It has campuses in California's Silicon Valley and Qatar, and programs in Africa, Asia, Australia, Europe and Mexico.

Logo: http://photos.prnewswire.com/prnh/20020422/CMULOGO

SOURCE Carnegie Mellon University

More Stories By PR Newswire

Copyright © 2007 PR Newswire. All rights reserved. Republication or redistribution of PRNewswire content is expressly prohibited without the prior written consent of PRNewswire. PRNewswire shall not be liable for any errors or delays in the content, or for any actions taken in reliance thereon.

Latest Stories
Organizations planning enterprise data center consolidation and modernization projects are faced with a challenging, costly reality. Requirements to deploy modern, cloud-native applications simultaneously with traditional client/server applications are almost impossible to achieve with hardware-centric enterprise infrastructure. Compute and network infrastructure are fast moving down a software-defined path, but storage has been a laggard. Until now.
Adding public cloud resources to an existing application can be a daunting process. The tools that you currently use to manage the software and hardware outside the cloud aren’t always the best tools to efficiently grow into the cloud. All of the major configuration management tools have cloud orchestration plugins that can be leveraged, but there are also cloud-native tools that can dramatically improve the efficiency of managing your application lifecycle. In his session at 18th Cloud Expo, ...
Contextual Analytics of various threat data provides a deeper understanding of a given threat and enables identification of unknown threat vectors. In his session at @ThingsExpo, David Dufour, Head of Security Architecture, IoT, Webroot, Inc., discussed how through the use of Big Data analytics and deep data correlation across different threat types, it is possible to gain a better understanding of where, how and to what level of danger a malicious actor poses to an organization, and to determ...
Extreme Computing is the ability to leverage highly performant infrastructure and software to accelerate Big Data, machine learning, HPC, and Enterprise applications. High IOPS Storage, low-latency networks, in-memory databases, GPUs and other parallel accelerators are being used to achieve faster results and help businesses make better decisions. In his session at 18th Cloud Expo, Michael O'Neill, Strategic Business Development at NVIDIA, focused on some of the unique ways extreme computing is...
Digital transformation has increased the pace of business creating a productivity divide between the technology haves and have nots. Managing financial information on spreadsheets and piecing together insight from numerous disconnected systems is no longer an option. Rapid market changes and aggressive competition are motivating business leaders to reevaluate legacy technology investments in search of modern technologies to achieve greater agility, reduced costs and organizational efficiencies. ...
CI/CD is conceptually straightforward, yet often technically intricate to implement since it requires time and opportunities to develop intimate understanding on not only DevOps processes and operations, but likely product integrations with multiple platforms. This session intends to bridge the gap by offering an intense learning experience while witnessing the processes and operations to build from zero to a simple, yet functional CI/CD pipeline integrated with Jenkins, Github, Docker and Azure...
Fact: storage performance problems have only gotten more complicated, as applications not only have become largely virtualized, but also have moved to cloud-based infrastructures. Storage performance in virtualized environments isn’t just about IOPS anymore. Instead, you need to guarantee performance for individual VMs, helping applications maintain performance as the number of VMs continues to go up in real time. In his session at Cloud Expo, Dhiraj Sehgal, Product and Marketing at Tintri, sha...
"We do one of the best file systems in the world. We learned how to deal with Big Data many years ago and we implemented this knowledge into our software," explained Jakub Ratajczak, Business Development Manager at MooseFS, in this SYS-CON.tv interview at 20th Cloud Expo, held June 6-8, 2017, at the Javits Center in New York City, NY.
Traditional IT, great for stable systems of record, is struggling to cope with newer, agile systems of engagement requirements coming straight from the business. In his session at 18th Cloud Expo, William Morrish, General Manager of Product Sales at Interoute, will outline ways of exploiting new architectures to enable both systems and building them to support your existing platforms, with an eye for the future. Technologies such as Docker and the hyper-convergence of computing, networking and...
Containers, microservices and DevOps are all the rage lately. You can read about how great they are and how they’ll change your life and the industry everywhere. So naturally when we started a new company and were deciding how to architect our app, we went with microservices, containers and DevOps. About now you’re expecting a story of how everything went so smoothly, we’re now pushing out code ten times a day, but the reality is quite different.
The hierarchical architecture that distributes "compute" within the network specially at the edge can enable new services by harnessing emerging technologies. But Edge-Compute comes at increased cost that needs to be managed and potentially augmented by creative architecture solutions as there will always a catching-up with the capacity demands. Processing power in smartphones has enhanced YoY and there is increasingly spare compute capacity that can be potentially pooled. Uber has successfully ...
Using new techniques of information modeling, indexing, and processing, new cloud-based systems can support cloud-based workloads previously not possible for high-throughput insurance, banking, and case-based applications. In his session at 18th Cloud Expo, John Newton, CTO, Founder and Chairman of Alfresco, described how to scale cloud-based content management repositories to store, manage, and retrieve billions of documents and related information with fast and linear scalability. He addres...
You want to start your DevOps journey but where do you begin? Do you say DevOps loudly 5 times while looking in the mirror and it suddenly appears? Do you hire someone? Do you upskill your existing team? Here are some tips to help support your DevOps transformation. Conor Delanbanque has been involved with building & scaling teams in the DevOps space globally. He is the Head of DevOps Practice at MThree Consulting, a global technology consultancy. Conor founded the Future of DevOps Thought Leade...
When building large, cloud-based applications that operate at a high scale, it’s important to maintain a high availability and resilience to failures. In order to do that, you must be tolerant of failures, even in light of failures in other areas of your application. “Fly two mistakes high” is an old adage in the radio control airplane hobby. It means, fly high enough so that if you make a mistake, you can continue flying with room to still make mistakes. In his session at 18th Cloud Expo, Lee A...
While some developers care passionately about how data centers and clouds are architected, for most, it is only the end result that matters. To the majority of companies, technology exists to solve a business problem, and only delivers value when it is solving that problem. 2017 brings the mainstream adoption of containers for production workloads. In his session at 21st Cloud Expo, Ben McCormack, VP of Operations at Evernote, discussed how data centers of the future will be managed, how the p...