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Related Concept Videos

ATP Driven Pumps III: V-type Pumps01:30

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V-type pumps are ATP-driven pumps found in the vacuolar membranes of plants, yeast, endosomal and lysosomal membranes of animal cells, plasma membranes of a few specialized eukaryotic cells, and some prokaryotes. They are also known as the V1Vo-ATPase, that couple ATP hydrolysis to transport protons against a concentration gradient.
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ATP Driven Pumps II: P-type Pumps01:34

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The P-type pumps are a large family of integral membrane transporter ATPases. They are divided into five major types based on substrate specificity, from I to V.
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Machines

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Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. One example of a machine is the cutting plier, which is used to cut wires by applying forces to its handles. When equal and opposite forces are exerted on the handles of the cutting plier, they cause the cutting edges to come together and apply equal and opposite reaction forces on the wire, which are greater than the applied forces.
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Pumped Concrete01:13

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Concrete in large quantities can be pumped across long distances for placing in inaccessible sites. This system comprises a hopper that receives concrete from a mixer, a pump to propel the concrete, and pipelines that facilitate its delivery.
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Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. Consider a lifting tong carrying a 100 kg load. It comprises movable sections DAF and CBG linked together with member AB.
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Refrigerators or heat pumps are heat engines operating in a reverse direction. For a refrigerator, the focus is on removing heat from a specific area, whereas, for a heat pump, the focus is on dumping heat into one particular area. A refrigerator (or heat pump) absorbs heat Qc from the cold reservoir at Kelvin temperature Tc and discards heat Qh to the hot reservoir at Kelvin temperature Th, while work W is done on the engine’s working substance.
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Stretchable pumps for soft machines.

Vito Cacucciolo1, Jun Shintake2,3, Yu Kuwajima4

  • 1Soft Transducers Laboratory (LMTS), Institute of Microengineering, School of Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Neuchâtel, Switzerland. vito.cacucciolo@epfl.ch.

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This summary is machine-generated.

Researchers developed novel soft-matter pumps using electrohydrodynamics. These flexible, solid-state pumps enable autonomous soft robots and wearable devices, overcoming limitations of previous fluidic systems.

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Area of Science:

  • Soft robotics
  • Materials science
  • Fluid dynamics

Background:

  • Soft materials enable advanced robotics and wearable devices, but lack efficient, portable fluidic pumps.
  • Existing soft actuators often rely on bulky or complex fluidic systems.
  • Limited development of soft pumps hinders autonomy and portability in soft machines.

Purpose of the Study:

  • To introduce a novel class of soft-matter bidirectional pumps.
  • To demonstrate the capabilities of these pumps in various applications.
  • To overcome limitations in soft machine portability and autonomy.

Main Methods:

  • Charge-injection electrohydrodynamics for pump operation.
  • Fabrication of flexible and stretchable solid-state pumps.
  • Integration of pumps into wearable devices and inflatable structures.

Main Results:

  • Developed bidirectional pumps that are flexible, stretchable, modular, scalable, quiet, and rapid.
  • Demonstrated active thermal management using a pump integrated into a glove.
  • Created a self-contained fluidic 'muscle' by embedding a pump in an inflatable structure.

Conclusions:

  • The developed soft-matter pumps offer a versatile solution for fluidic actuation in soft machines.
  • These pumps have significant potential for applications in wearable technology, microfluidics, and autonomous soft robotics.
  • The solid-state nature and performance characteristics advance the field of soft robotics.