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Related Concept Videos

Electro-mechanical Systems01:19

Electro-mechanical Systems

Electromechanical systems are intricate configurations that effectively combine electrical and mechanical elements to achieve a desired outcome. Central to many of these systems is the DC motor, a device that converts electrical energy into mechanical motion, enabling various applications ranging from simple fans to complex robotic mechanisms.
A key component of the DC motor is the armature, a rotating circuit positioned within a magnetic field. As an electric current passes through the...
Faraday Disk Dynamo01:23

Faraday Disk Dynamo

A Faraday disk dynamo is a DC generator, producing an emf that is constant in time. It consists of a conducting disk that rotates with a constant angular velocity in the magnetic field, perpendicular to the disk's plane. The rotation of the disk causes a change in magnetic flux, which induces an emf, causing opposite charges to develop on the rim and in the center of the disk. The polarity of the induced emf can be determined by the direction of the magnetic field and the direction of the...
Mechanical Systems01:22

Mechanical Systems

Mechanical systems are analogous to to electrical networks where springs and masses play similar roles to inductors and capacitors, respectively. A viscous damper in mechanical systems functions similarly to a resistor in electrical networks, dissipating energy. The forces acting on a mass in such systems include an applied force in the direction of motion, counteracted by forces from the spring, a viscous damper, and the mass's acceleration. This interplay of forces is mathematically described...
Applications of RC Circuits01:22

Applications of RC Circuits

A relaxation oscillator is one of the applications of RC circuits. A neon lamp relaxation oscillator comprises a capacitor, a resistor, a voltage source, and a lamp. The lamp acts like an open circuit, with infinite resistance until the potential difference across the lamp reaches a specific voltage. At that voltage, the lamp acts like a short circuit with zero resistance, and the capacitor discharges through the lamp, thus producing light. Once the capacitor is fully discharged through the...
Electromotive Force01:02

Electromotive Force

Electromotive force (emf) is the force that causes current to flow from a higher to a lower  potential. The term "electromotive force" is used for historical reasons, even though emf is not a force at all.
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Electromotive Force02:36

Electromotive Force

Electricity is generated by either electrons or ions flowing through a solution or a conducting medium. This flow of electrons or specifically electrical charge is defined as an electric current. When electrons move through a wire, they generate an electric current. It can be recalled that in a redox reaction, electrons are lost and gained. In the spontaneous redox reaction of zinc with copper, when zinc is immersed in a copper ion solution, a transfer of electrons from one substance to...

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Related Experiment Video

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Mechanical Manipulation of Neurons to Control Axonal Development
10:02

Mechanical Manipulation of Neurons to Control Axonal Development

Published on: April 10, 2011

Organic electronic ratchets doing work.

Erik M Roeling1, Wijnand Chr Germs, Barry Smalbrugge

  • 1Applied Physics, Eindhoven University of Technology, PO Box 513, 5600 MB, Eindhoven, The Netherlands.

Nature Materials
|December 15, 2010
PubMed
Summary
This summary is machine-generated.

Scientists developed new organic electronic ratchets that work at room temperature, generating significant power. These ratchets can convert alternating current to direct current, potentially powering electronic circuits.

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Mechanical Manipulation of Neurons to Control Axonal Development
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Area of Science:

  • Physics
  • Materials Science
  • Electrical Engineering

Background:

  • Ratchet potentials, periodic asymmetric functions, have long been studied for rectifying undirected motion.
  • Traditional electronic ratchets operate at cryogenic temperatures with limited output.

Purpose of the Study:

  • To develop organic electronic ratchets capable of room-temperature operation.
  • To achieve higher current and voltage outputs for practical applications.

Main Methods:

  • Fabrication of novel organic electronic ratchet devices.
  • Testing device performance at room temperature and up to radio frequencies.
  • Integration of ratchets into logic circuits to demonstrate power generation capabilities.

Main Results:

  • Organic electronic ratchets operate effectively at room temperature and radio frequencies.
  • Devices generate significantly larger currents and voltages compared to previous electronic ratchets.
  • Ratchets successfully functioned as d.c. power sources and drove integrated logic circuits.

Conclusions:

  • Organic electronic ratchets offer a viable solution for practical energy harvesting and powering electronic systems.
  • These devices overcome the limitations of cryogenic temperatures and low output of earlier electronic ratchets.
  • The findings indicate a significant advancement in the utility of electronic ratchets.