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Related Concept Videos

Equivalent Capacitance01:19

Equivalent Capacitance

705
From the study of resistive circuits, it is understood that employing a series-parallel combination serves as an effective strategy for simplifying circuits. Capacitors can be arranged within a circuit in one of two ways: a series configuration or a parallel configuration. The way these capacitors are connected to a battery will influence both the potential drop across each individual capacitor and the size of the charge that each capacitor can store. This is determined by the specific type of...
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Equivalent Capacitance01:19

Equivalent Capacitance

2.2K
Multiple capacitors can be connected in a circuit in series or parallel configuration. When the capacitor combination is connected to a battery, the potential drop across each capacitor and the magnitude of charge stored in the individual capacitor depends on the type of the connection. The capacitor combination is replaced by a single equivalent capacitor that stores the same amount of charge as the combination for a given potential difference.
The following strategies are adopted to calculate...
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Capacitors and Capacitance01:18

Capacitors and Capacitance

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A device consisting of two electrical conductors that are separated by a distance and used to store electrical charges is called a capacitor. The space between the conductors is either a vacuum or an insulating material, called a dielectric. Capacitors have many applications, ranging from filtering static from radio reception to energy storage in heart defibrillators.
When the conductors are two identical parallel plates, it is called a parallel plate capacitor. When battery terminals are...
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Design Example: Capacitance Multiplier Circuit01:20

Design Example: Capacitance Multiplier Circuit

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In integrated circuit technology, a capacitance multiplier is often utilized to produce a larger capacitance value when a small physical capacitance falls short. This is achieved by a circuit that multiplies capacitance values by a factor of up to 1000, such that a 10-pF capacitor can replicate the performance of a 100-nF capacitor.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
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Capacitance: Single-Phase And Three-Phase Line01:25

Capacitance: Single-Phase And Three-Phase Line

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In electrical power systems, understanding the capacitance of transmission lines is fundamental for efficient operation.
Single-Phase Lines
Consider a single-phase, two-wire transmission line with equal phase spacing energized by a voltage source. One conductor carries a uniform positive charge, while the other carries an equal negative charge. The capacitance C of the line can be derived from the voltage V between the conductors. For a one-meter section of the line, the capacitance is given...
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Overview of Advanced Functional Groups02:22

Overview of Advanced Functional Groups

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Functional groups are groups of atoms with specific chemical properties that occur within organic molecules and are sometimes denoted as “R”. Functional groups can “functionalize” a compound by enabling it to adopt different physical and chemical properties.
Types of Advanced Functional Groups
The table below summarizes some of the major functional groups in organic chemistry.
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Laser Micromachining for Polymer Surface Topography Design
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Advances in Capacitive Micromachined Ultrasonic Transducers.

Kevin Brenner1, Arif Sanli Ergun2,3, Kamyar Firouzi4

  • 1E.L. Ginzton Lab., Stanford University, Stanford, CA 94305, USA. brennerk@stanford.edu.

Micromachines
|March 1, 2019
PubMed
Summary

Capacitive micromachined ultrasonic transducer (CMUT) technology is advancing rapidly, with improvements in modeling, fabrication, and integration driving commercial success in ultrasound imaging. Future trends focus on CMUTs

Keywords:
acousticscapacitivecapacitive micromachined ultrasonic transducer (CMUT)fabricationmicromachiningmodellingtransducer

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Area of Science:

  • Ultrasound technology
  • Biomedical imaging
  • Transducer engineering

Background:

  • Capacitive micromachined ultrasonic transducer (CMUT) technology has seen significant development over the past decade.
  • CMUTs have achieved commercial success and integration into mainstream ultrasound imaging systems.
  • Progress in fabrication, integration, and modeling has been key to CMUT advancements.

Purpose of the Study:

  • To review recent advancements in CMUT technology across multiple levels.
  • To discuss the impact of CMUTs in biomedical imaging.
  • To explore future trends and applications of CMUTs.

Main Methods:

  • Review of recent literature on CMUT technology.
  • Analysis of advancements in modeling, fabrication, and integration.
  • Exploration of current and future applications in biomedical imaging.

Main Results:

  • CMUT technology has matured, enabling widespread adoption in ultrasound imaging.
  • Improvements in fabrication and integration have enhanced CMUT performance and reliability.
  • CMUTs show significant potential for future biomedical imaging applications.

Conclusions:

  • CMUT technology is a rapidly evolving field with substantial commercial success.
  • Continued advancements in modeling, fabrication, and integration will drive future innovation.
  • CMUTs are poised to play an increasingly important role in the future of biomedical imaging.