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

MOSFET: Enhancement Mode01:22

MOSFET: Enhancement Mode

619
Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no...
619
Design Example: Capacitance Multiplier Circuit01:20

Design Example: Capacitance Multiplier Circuit

1.2K
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.
1.2K

You might also read

Related Articles

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

Sort by
Same author

Expression and Characterization of a Recombinant Laccase with Alkalistable and Thermostable Properties from Streptomyces griseorubens JSD-1.

Applied biochemistry and biotechnology·2015
Same author

Herb-Partitioned Moxibustion and the miRNAs Related to Crohn's Disease: A Study Based on Rat Models.

Evidence-based complementary and alternative medicine : eCAM·2015
Same author

Bioactive carbazole alkaloids from the stems of Clausena lansium.

Fitoterapia·2015
Same author

Clauemarazoles A-G, seven carbazole alkaloids from the stems of Clausena emarginata.

Fitoterapia·2015
Same author

Scalable and DiI-compatible optical clearance of the mammalian brain.

Frontiers in neuroanatomy·2015
Same author

FSH regulates fat accumulation and redistribution in aging through the Gαi/Ca(2+)/CREB pathway.

Aging cell·2015

Related Experiment Video

Updated: Nov 23, 2025

Optimized Fabrication Procedure for High-Quality Graphene-based Moiré Superlattice Devices
11:24

Optimized Fabrication Procedure for High-Quality Graphene-based Moiré Superlattice Devices

Published on: July 11, 2025

11.7K

Switchable multifunctional modulator realized by the stacked graphene-based hyperbolic metamaterial unit cells.

Yu Ma, Tao Zhang, MingYu Mao

    Optics Express
    |December 31, 2020
    PubMed
    Summary

    This study introduces a tunable graphene-based hyperbolic metamaterial (HM) modulator. It demonstrates control over reflection and transmission, enabling applications in frequency-selective absorbers and logic switches.

    More Related Videos

    Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
    08:48

    Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

    Published on: September 25, 2020

    6.0K
    Characterization of Anisotropic Leaky Mode Modulators for Holovideo
    09:36

    Characterization of Anisotropic Leaky Mode Modulators for Holovideo

    Published on: March 19, 2016

    8.2K

    Related Experiment Videos

    Last Updated: Nov 23, 2025

    Optimized Fabrication Procedure for High-Quality Graphene-based Moiré Superlattice Devices
    11:24

    Optimized Fabrication Procedure for High-Quality Graphene-based Moiré Superlattice Devices

    Published on: July 11, 2025

    11.7K
    Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
    08:48

    Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

    Published on: September 25, 2020

    6.0K
    Characterization of Anisotropic Leaky Mode Modulators for Holovideo
    09:36

    Characterization of Anisotropic Leaky Mode Modulators for Holovideo

    Published on: March 19, 2016

    8.2K

    Area of Science:

    • * Physics and Materials Science
    • * Nanotechnology and Metamaterials

    Background:

    • * Hyperbolic metamaterials (HMs) offer unique electromagnetic properties.
    • * Graphene's tunable electronic properties make it suitable for dynamic control of metamaterial devices.

    Purpose of the Study:

    • * To propose and theoretically investigate a tunable, multifunctional modulator based on stacked graphene-HM cells.
    • * To explore the modulation of reflection-transmission characteristics and absorption properties.

    Main Methods:

    • * Theoretical investigation of dielectric constant and group index for graphene-HM cells.
    • * Analysis of electromagnetic response under varying incident angles and graphene chemical potentials.

    Main Results:

    • * Achieved a transmission window in the reflection zone (TWRZ) tunable with incident angle.
    • * Demonstrated single-frequency absorption in the transmission zone (SFATZ), adjustable via graphene's chemical potential.
    • * Realized ultra-wideband absorption and transmission window in the absorption zone (TWAZ) in a multi-cell structure.

    Conclusions:

    • * The proposed graphene-HM modulator offers switchable frequency- and angle-dependent reflection-transmission control.
    • * The design enables single-frequency and ultra-wideband absorbers.
    • * Potential applications include tunable filters, absorbers, and logic switches.