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

Bridge rectifier01:24

Bridge rectifier

1.3K
The bridge rectifier is essential in electronics for efficiently converting alternating current (AC) to direct current (DC). Comprised of four diodes configured in a bridge layout, this rectifier effectively processes both the positive and negative halves of the AC waveform, making it superior to half-wave and full-wave center-tapped rectifiers in terms of voltage regulation and output stability.
Operationally, the bridge rectifier allows current flow through two of its diodes during each...
1.3K
Interfacial Electrochemical Methods: Overview01:06

Interfacial Electrochemical Methods: Overview

726
Interfacial electrochemical methods focus on the phenomena occurring at the boundary between an electrode and a solution, as opposed to bulk methods that concentrate on the solution's overall properties. These interfacial methods are classified as either static or dynamic based on the presence of a nonzero current in the electrochemical cell and the consistency of analyte concentrations. Static methods, such as potentiometry, measure the cell's potential without any significant current...
726
Design Example: Capacitance Multiplier Circuit01:20

Design Example: Capacitance Multiplier Circuit

1.3K
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.
1.3K
MOS Capacitor01:25

MOS Capacitor

1.4K
A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
1.4K
Equivalent Capacitance01:19

Equivalent Capacitance

2.0K
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...
2.0K
Equivalent Capacitance01:19

Equivalent Capacitance

605
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...
605

You might also read

Related Articles

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

Sort by
Same author

Vosamidines A-C, Polycyclic 2-Aminoimidazole Alkaloids from a Marine Calcareous Sponge <i>Vosmaeropsis wilsoni</i>.

Organic letters·2026
Same author

Community-led standards for global wastewater-based infectious disease surveillance.

PLOS global public health·2026
Same author

Nanodomain Formation and Temperature-Dependent Diffusion in Deep Eutectic Solvents Revealed by Single-Molecule Tracking.

Langmuir : the ACS journal of surfaces and colloids·2026
Same author

Temperature-dependent changes in gas chromatographic separation metrics for trihexyl(tetradecyl)phosphonium-based ionic liquid stationary phases and comparison to conventional polysiloxane stationary phases.

Journal of chromatography. A·2026
Same author

Inequities and global declines in SARS-CoV-2 genomic data availability hinder response to emerging variants.

Npj viruses·2026
Same author

Use cases for pan-sarbecovirus vaccines: a workshop report.

Vaccine·2026

Related Experiment Video

Updated: Dec 25, 2025

Scanning-probe Single-electron Capacitance Spectroscopy
10:53

Scanning-probe Single-electron Capacitance Spectroscopy

Published on: July 30, 2013

13.4K

AC and DC Differential Bridge Structure Suitable for Electrochemical Interfacial Capacitance Biosensing Applications.

Sara Neshani1, Charles K A Nyamekye2, Scott Melvin1

  • 1Electrical Engineering Department, Iowa State University, Ames, IA 50010, USA.

Biosensors
|April 3, 2020
PubMed
Summary

This study introduces a novel capacitive differential bridge for sensitive biosensing. The new design improves accuracy and interference rejection for detecting interfacial capacitance changes, crucial for low-cost biosensor applications.

Keywords:
AC/DC excitationbalancingbiosensordriftelectrochemical capacitive bridgefield deployablelinearitylow-costreal-timesensitivity

More Related Videos

Bidirectional Electrical and Optoelectronic Interfaces in Healthy and Ischemic Ex Vivo Rat Hearts
08:33

Bidirectional Electrical and Optoelectronic Interfaces in Healthy and Ischemic Ex Vivo Rat Hearts

Published on: July 18, 2025

715
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

3.7K

Related Experiment Videos

Last Updated: Dec 25, 2025

Scanning-probe Single-electron Capacitance Spectroscopy
10:53

Scanning-probe Single-electron Capacitance Spectroscopy

Published on: July 30, 2013

13.4K
Bidirectional Electrical and Optoelectronic Interfaces in Healthy and Ischemic Ex Vivo Rat Hearts
08:33

Bidirectional Electrical and Optoelectronic Interfaces in Healthy and Ischemic Ex Vivo Rat Hearts

Published on: July 18, 2025

715
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

3.7K

Area of Science:

  • * Biosensing and electrochemical sensor technology.
  • * Electronic instrumentation and circuit design.

Background:

  • * Electrode-solution interfacial capacitance is a key parameter in biosensing.
  • * Existing methods face challenges with sensitivity, interference, and drift.
  • * Low-cost, high-performance biosensing platforms are in demand.

Purpose of the Study:

  • * To present a novel capacitive differential bridge structure with AC/DC excitation and balancing.
  • * To investigate the impact of component mismatch on bridge performance.
  • * To provide design guidelines for balancing networks and readout circuitry.

Main Methods:

  • * Development of a series RC balancing capacitive differential bridge.
  • * Investigation of component mismatch effects on sensitivity and linearity.
  • * Implementation of a custom real-time amplification/filtering readout board with sine fitting.
  • * Utilization of Microcystin-(Leucine-Arginine) toxin dilutions for proof of concept.

Main Results:

  • * The proposed bridge structure demonstrates higher sensitivity and reduced common-mode interference.
  • * An 8-bit detection resolution was achieved for a 1% fractional capacitance change.
  • * The system successfully detected minute capacitance changes at the electrode-solution interface.
  • * Characterization and measurement results validate the effectiveness of the proposed structure.

Conclusions:

  • * The developed capacitive differential bridge is effective for low-cost biosensing.
  • * The series RC balancing structure enhances sensitivity and drift control.
  • * The study provides a practical guideline for designing high-resolution capacitive biosensors.