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Related Concept Videos

Energy Stored in Capacitors01:10

Energy Stored in Capacitors

A parallel plate capacitor, when connected to a battery, develops a potential difference across its plates. This potential difference is key to the operation of the capacitor, as it determines how much electrical energy the capacitor can store.
By integrating the equation that relates voltage and current in a capacitor, one can derive an equation for the voltage across the capacitor at any given time. This equation is crucial in understanding and predicting the behavior of capacitors in...
Charge and Current01:14

Charge and Current

Electric charge is the most fundamental quantity in an electric circuit. The effects of electric charge are encountered daily, such as when a wool sweater sticks to the human body or when a person receives a shock while walking on a carpet.
Charge is an inherent property of the atomic particles that make up matter and is measured in units called coulombs (C). Matter is composed of atoms, each consisting of electrons, protons, and neutrons. Electrons have a negative charge (-e), while protons...
Charging Conductors By Induction01:15

Charging Conductors By Induction

The Earth is a good conductor of electricity, and it is so big that it can be considered an infinite source or sink of charges. It can easily exchange charges with any matter.
Generally, conductors like metals do not allow any excess charge to be present on them. Any excess charge added to metals easily flows away, for example, when a metal is placed on the Earth. This process is called earthing.
However, conductors can be charged by a process called induction. For example, consider charging a...
Pulse rhythm01:30

Pulse rhythm

Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac muscle...
Energy Supply for Muscle Contraction01:25

Energy Supply for Muscle Contraction

Skeletal muscle fibers have the unique ability to switch between rest and contraction states, using different sources of ATP for energy. The contraction cycle and Ca2+ transport back into the sarcoplasmic reticulum for relaxation require significant ATP. However, the ATP reserves in muscle fibers are limited and can only sustain contractions for a few seconds. Additional ATP production becomes necessary for prolonged contractions. As a result, muscle fibers generate ATP through various sources,...
Energy Stored in a Capacitor01:12

Energy Stored in a Capacitor

When an archer pulls the string in a bow, he saves the work done in the form of elastic potential energy. When he releases the string, the potential energy is released as kinetic energy of the arrow. A capacitor works on the same principle in which the work done is saved as electric potential energy. The potential energy (UC) could be calculated by measuring the work done (W) to charge the capacitor.

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Related Experiment Video

Updated: May 30, 2026

Translational Rabbit Model of Chronic Cardiac Pacing
06:14

Translational Rabbit Model of Chronic Cardiac Pacing

Published on: January 6, 2023

Pacemakers charging using body energy.

Dinesh Bhatia1, Sweeti Bairagi, Sanat Goel

  • 1Department of Biomedical Engineering, Deenbadhu Chottu Ram University of Science and Technology, Murthal, Sonepat, Haryana-131 039, India.

Journal of Pharmacy & Bioallied Sciences
|August 5, 2011
PubMed
Summary
This summary is machine-generated.

Harnessing body heat offers a promising solution for powering medical implants like pacemakers, reducing the need for battery replacement surgeries. This innovative approach utilizes biothermal energy to ensure continuous device function and patient safety.

Keywords:
Biothermal batterypacemakersthermoelectric generators

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Published on: August 27, 2021

Area of Science:

  • Biomedical Engineering
  • Materials Science
  • Energy Harvesting

Background:

  • Medical implants such as pacemakers and defibrillators require battery replacements, necessitating frequent surgeries.
  • Current battery technology poses risks and discomfort to patients due to repeated invasive procedures.

Purpose of the Study:

  • To explore body heat as a sustainable energy source for medical implants.
  • To reduce the frequency of surgeries required for battery replacement in life-saving devices.

Main Methods:

  • Investigating biothermal batteries utilizing thermoelectric generators (TEGs).
  • Exploiting the thermocouple effect to convert body heat into electrical energy.
  • Assessing the feasibility of implanting devices in areas with a sufficient temperature gradient (e.g., below the skin).

Main Results:

  • Biothermal devices require a minimal temperature difference (2°C) to generate electricity.
  • Areas just below the skin offer a temperature difference of approximately 5°C, suitable for biothermal energy harvesting.
  • Body heat presents a viable alternative power source for implantable medical devices.

Conclusions:

  • Utilizing body heat can significantly decrease the need for surgical battery replacements in pacemakers and other implants.
  • This approach enhances patient safety by minimizing risks associated with repeated surgeries.
  • Biothermal energy harvesting represents a sustainable and innovative solution for powering implantable medical technologies.