Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Design Example: Capacitance Multiplier Circuit01:20

Design Example: Capacitance Multiplier Circuit

1.6K
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.
1.6K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Renal Complement C3 Deposition is Associated with Glomerular Prothrombotic Milieu in Patients with IgA Nephropathy.

Journal of inflammation research·2026
Same author

Chronic kidney disease in women: Global trends and metabolic-cardiovascular associations.

Chinese medical journal·2026
Same author

Targeting lymphotoxin β receptor: from mechanism to precision therapy.

Journal of enzyme inhibition and medicinal chemistry·2026
Same author

Physiology-guided Self-supervised Learning for Simultaneous Dual-Tracer PET Separation.

IEEE transactions on medical imaging·2026
Same author

ContiMorph: An unsupervised learning framework for cardiac motion tracking with time-continuous diffeomorphism.

Medical image analysis·2026
Same author

On the Identifiability of Hybrid Deep Generative Models: Meta-Learning as a Solution.

Advances in neural information processing systems·2026

Related Experiment Video

Updated: Feb 22, 2026

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing
05:57

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing

Published on: March 17, 2023

4.4K

High-Sensitivity Encoder-Like Micro Area-Changed Capacitive Transducer for a Nano-g Micro Accelerometer.

Wenjie Wu1, Panpan Zheng2, Jinquan Liu3

  • 1MOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China. wjwu@hust.edu.cn.

Sensors (Basel, Switzerland)
|September 21, 2017
PubMed
Summary

This study introduces a complete model for micro area-changed capacitive transducers, enhancing linearity and dynamic range. The optimized transducer achieved a displacement detection resolution of 50 pm/√Hz, enabling sensitive micro accelerometers.

Keywords:
area-changedcapacitive sensorfringe effectmicro accelerometerparasitic capacitancesensitivity improvement

More Related Videos

Ultrasensitive Detection of Biomarkers by Using a Molecular Imprinting Based Capacitive Biosensor
08:22

Ultrasensitive Detection of Biomarkers by Using a Molecular Imprinting Based Capacitive Biosensor

Published on: February 16, 2018

12.7K
Data Acquisition Protocol for Determining Embedded Sensitivity Functions
07:46

Data Acquisition Protocol for Determining Embedded Sensitivity Functions

Published on: April 20, 2016

6.5K

Related Experiment Videos

Last Updated: Feb 22, 2026

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing
05:57

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing

Published on: March 17, 2023

4.4K
Ultrasensitive Detection of Biomarkers by Using a Molecular Imprinting Based Capacitive Biosensor
08:22

Ultrasensitive Detection of Biomarkers by Using a Molecular Imprinting Based Capacitive Biosensor

Published on: February 16, 2018

12.7K
Data Acquisition Protocol for Determining Embedded Sensitivity Functions
07:46

Data Acquisition Protocol for Determining Embedded Sensitivity Functions

Published on: April 20, 2016

6.5K

Area of Science:

  • Microelectromechanical systems (MEMS)
  • Capacitive sensing technology
  • Transducer modeling

Background:

  • Area-changed capacitive transducers offer superior linearity and dynamic range over gap-changed types.
  • Existing models lack comprehensive accounting for parasitic capacitance and fringe effects.
  • These transducers are crucial for position sensors, lab-on-a-chip, and biosensor applications.

Purpose of the Study:

  • To develop a complete model for micro area-changed capacitive transducers.
  • To optimize transducer design for high-resolution micro accelerometers.
  • To validate the model through simulations and experimental verification.

Main Methods:

  • Developed a comprehensive model incorporating parasitic capacitance and fringe effects.
  • Implemented an optimization technique using photosensitive polyimide to reduce parasitic capacitance.
  • Decreased capacitor spacing to mitigate fringe effects.

Main Results:

  • Achieved a transducer sensitivity of approximately 46 pF/mm, a 40-fold increase.
  • Measured a displacement detection resolution of 50 pm/√Hz at 0.1 Hz.
  • Applied to a micro accelerometer with a measured noise level of 30 ng/√Hz at 1 Hz.

Conclusions:

  • The presented complete model accurately describes area-changed capacitive transducers.
  • Optimization significantly enhanced transducer sensitivity and resolution.
  • The developed micro accelerometer demonstrated high performance, capable of detecting seismic events.