Contrast Agent Incorporation into Silicone Enables Real‐Time Flow‐Structure Analysis of Mammalian Vein‐Inspired Soft Pumps

Loepfe, Michael; Schumacher, Christoph M.; Burri, Cornelia H.; Stark, Wendelin J.

doi:10.1002/adfm.201404461

Cited by 12 publications

(6 citation statements)

References 29 publications

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“…The only currently existing soft robot where this is the case is Octobot [36], where the pressure is generated using the catalyzed chemical decomposition of hydrogen peroxide. However, the development of soft pumps for the application in soft robotics, especially based on the internal combustion of hydrocarbons, is currently underway [49][50][51][52]. Additionally, the realization of the chemical reaction between citric acid and sodium bicarbonate in a soft manner seems possible.…”

Section: Discussionmentioning

confidence: 99%

On-Board Pneumatic Pressure Generation Methods for Soft Robotics Applications

Adami

Seibel

2018

Actuators

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The design and construction of a soft robot are challenging tasks on their own. When the robot is supposed to operate without a tether, it becomes even more demanding. While a tethered operation is sufficient for a stationary use, it is impractical for wearable robots or performing tasks that demand a high mobility. Choosing and implementing an on-board pneumatic pressure source are particularly complex tasks. There are several different pressure generation methods to choose from, each with very different properties and ways of implementation. This review paper is written with the intention of informing about all pressure generation methods available in the field of soft robotics and providing an overview of the abilities and properties of each method. Nine different methods are described regarding their working principle, pressure generation behavior, energetic considerations, safety aspects, and suitability for soft robotics applications. All presented methods are evaluated in the most important categories for soft robotics pressure sources and compared to each other qualitatively and quantitatively as far as possible. The aim of the results presented is to simplify the choice of a suitable pressure generation method when designing an on-board pressure source for a soft robot.

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Section: Discussionmentioning

confidence: 99%

On-Board Pneumatic Pressure Generation Methods for Soft Robotics Applications

Adami

Seibel

2018

Actuators

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“…3D printing is now emerging as both a method for producing robots, machines, and sensors indirectly using fugitive molds; or directly, using Digital Mask Project Stereolithography (DMP‐SL), a commercial “polyjet” polymer deposition process to directly form complex 3D pneumatic actuators and robots containing functionally graded materials, and via Direct Ink Writing (DIW) (Figure a–c). In an example by Wehner et al (2016), the energy source for driving actuation is directly embedded within the robot itself .…”

Section: Fabrication Of Actuatorsmentioning

confidence: 99%

Soft Robotics: Review of Fluid‐Driven Intrinsically Soft Devices; Manufacturing, Sensing, Control, and Applications in Human‐Robot Interaction

et al. 2017

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The emerging field of soft robotics makes use of many classes of materials including metals, low glass transition temperature (Tg) plastics, and high Tg elastomers. Dependent on the specific design, all of these materials may result in extrinsically soft robots. Organic elastomers, however, have elastic moduli ranging from tens of megapascals down to kilopascals; robots composed of such materials are intrinsically soft À they are always compliant independent of their shape. This class of soft machines has been used to reduce control complexity and manufacturing cost of robots, while enabling sophisticated and novel functionalities often in direct contact with humans. This review focuses on a particular type of intrinsically soft, elastomeric robot À those powered via fluidic pressurization.

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“…Therefore, the performance of fluid actuators is also dependent on the preparation and structure of high-performance soft materials. Inspired by the penis as a variable-volume hydrostatic skeleton [142] , Loepfe et al created a new type of mammalian vein-inspired soft silicone pump [143] . Soft silicone is a key factor that determines the performance of a pump.…”

Section: Bio-inspired Pressurized Liquids In Robot Actuationmentioning

confidence: 99%

A Review of Biological Fluid Power Systems and Their Potential Bionic Applications

et al. 2019

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Nature has always inspired human achievements in industry, and biomimetics is increasingly being applied in fluid power technology. Arachnida use hydraulic forces, rather than muscle, for leg extensions during locomotion. Many cold-blooded and soft-bodied organisms rely on a hydrostatic skeleton to transmit force, which involves a hydraulic mechanism. Biological hydraulic transmission differs from engineering hydraulic transmission in many aspects, such as in energy transfer and transformation, the movement mode, environmental friendliness, system pressure level, and energy supplement mode. The existence of a hydraulic mechanism in a biological drive requires 3 features: a power source, cavity, and working medium. The power source is similar to a hydraulic pump, and the cavity is similar to a hydraulic cylinder, both of which are necessary for producing deformation. The working medium is similar to a hydraulic fluid. Under these 3 conditions, a biological flow is generated inside or outside the body to meet the needs of a biological drive. This paper reviews the biological organisms that employ hydraulic systems, identifies related studies on these biological hydraulic systems, and summarizes the mechanisms involved in using hydraulic pressure to achieve graceful and agile movements. This in-depth study and exploration of biological hydraulic systems can provide a good reference for solving the challenges of using hydraulic systems, such as increasing the energy efficiency, improving reliability, building smart components and systems, reducing the size and weight of components, reducing the environmental impact of systems, and improving and applying energy storage and redeployment capabilities. This paper also includes a detailed discussion of new ideas and innovative sources for the future development of hydraulic systems. In contrast with the bio-inspired designs used in other engineering fields, very few studies have reported on using bio-inspired methods for hydraulic transmission techniques. The aim of this work is to attract the attention of researchers to help address this gap and to promote the use of biologically-inspired methods to improve engineering fluid power systems.

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Contrast Agent Incorporation into Silicone Enables Real‐Time Flow‐Structure Analysis of Mammalian Vein‐Inspired Soft Pumps

Cited by 12 publications

References 29 publications

On-Board Pneumatic Pressure Generation Methods for Soft Robotics Applications

On-Board Pneumatic Pressure Generation Methods for Soft Robotics Applications

Soft Robotics: Review of Fluid‐Driven Intrinsically Soft Devices; Manufacturing, Sensing, Control, and Applications in Human‐Robot Interaction

A Review of Biological Fluid Power Systems and Their Potential Bionic Applications

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