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

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 current...

You might also read

Related Articles

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

Sort by
Same author

Ultrafast photocurrent detection contradicts optical detection conclusions: Exciton diffusion contributes little to carbon nanotube device efficiency.

Science advances·2026
Same author

Direct solar energy charging of metal||air batteries enabled by photo-coupled electrodes.

Nature communications·2026
Same author

Emerging Electrochemical Energy Conversion Materials: Graphdiyne.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

Nonequilibrium pulsed heating freezes sintering of supported metal nanocatalysts.

Nature communications·2026
Same author

The Preparation of Porous CuO@F-GDY Nano-Arrays for High-Performance Sodium-Ion Battery Anodes.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

Bandgap-Regulation for Directly Solar Energy Conversion in Zinc-Air Battery with 4.55% PCE.

Angewandte Chemie (International ed. in English)·2025

Related Experiment Video

Updated: May 26, 2026

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities
11:42

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

Published on: July 24, 2015

Light-driven reversible modulation of doping in graphene.

Myungwoong Kim1, Nathaniel S Safron, Changshui Huang

  • 1Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA.

Nano Letters
|December 14, 2011
PubMed
Summary
This summary is machine-generated.

Stable graphene hybrids were created by attaching light-switchable molecules. Molecular changes reversibly control graphene

More Related Videos

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating
10:36

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating

Published on: April 12, 2018

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

Related Experiment Videos

Last Updated: May 26, 2026

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities
11:42

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

Published on: July 24, 2015

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating
10:36

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating

Published on: April 12, 2018

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

Area of Science:

  • Materials Science
  • Nanotechnology
  • Organic Electronics

Background:

  • Graphene's unique electronic properties are attractive for advanced devices.
  • Controlling graphene's doping level is crucial for tuning its conductivity.
  • Developing stable, functional graphene hybrids remains a challenge.

Purpose of the Study:

  • To create stable chromophore/graphene hybrids.
  • To use molecular transformations for reversible doping modulation of graphene.
  • To explore applications in optical interconnects.

Main Methods:

  • Noncovalent tethering of dipolar azobenzene chromophores to graphene via π-π interactions.
  • Utilizing light-induced trans-cis isomerization of azobenzene to alter molecular dipole moments.
  • Measuring changes in graphene's hole concentration and conductance under UV and white light illumination.
  • Conducting experiments under vacuum to confirm the role of molecular transformations.

Main Results:

  • Stable chromophore/graphene hybrids were successfully synthesized.
  • Azobenzene molecules induced p-doping in graphene, with a hole concentration of approximately 5 × 10^12 cm⁻².
  • Reversible switching of azobenzene between trans and cis forms modulated graphene's hole concentration by up to 18%.
  • Light-driven conductance modulation was observed and attributed to molecular transformations.

Conclusions:

  • Molecular transformation offers a viable method for reversible doping control in graphene.
  • The developed "light-gated" transistors demonstrate potential for optical interconnect applications.
  • Stable graphene hybrids with tunable electronic properties can be achieved through noncovalent functionalization.