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 Experiment Video

Updated: Aug 28, 2025

Fabrication and Testing of Photonic Thermometers
08:44

Fabrication and Testing of Photonic Thermometers

Published on: October 24, 2018

5.9K

An ultrafast quantum thermometer from graphene quantum dots.

Poonam Sehrawat1, Abid1, S S Islam1

  • 1Centre for Nanoscience and Nanotechnology, Jamia Millia Islamia (A Central University) New Delhi 110025 India sislam@jmi.ac.in +91 11 26987153.

Nanoscale Advances
|September 22, 2022
PubMed
Summary

We developed an ultra-sensitive temperature sensor using graphene quantum dots (GQDs) in a reduced graphene oxide (RGO) film. This sensor shows exceptional resistance change over a wide temperature range, enabling high-resolution thermal management and cryogenic applications.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

Electronic Modulation of Flexible Ether Oxygen-Based Covalent Organic Frameworks for Efficient Oxygen Reduction Reaction.

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

Comments on "Pouch Revision in Combination with Placement of a MiniMizer Ring as a Revisional Procedure in Patient with Suboptimal Clinical Response or Recurrent Weight Gain After RYGB".

Obesity surgery·2025
Same author

A Randomized Controlled Study to Compare the Efficacy of High Frequency Nasal Oxygenation with Conventional Oxygen Therapy for Postoperative Oxygenation in Patients Undergoing Exploratory Laparotomies.

Turkish journal of anaesthesiology and reanimation·2025
Same author

Chemical Vapor Transport Synthesis and Ambient Stability of 1D WTe<sub>2</sub> van der Waals Crystals.

Small (Weinheim an der Bergstrasse, Germany)·2025
Same author

Optimizing graphene content in scaffolds for evenly distributed crumpled MoS<sub>2</sub>paper wads as anodes for high-performance Li-ion batteries.

Nanotechnology·2024
Same author

PdSe<sub>2</sub>/MoSe<sub>2</sub>: a promising van der Waals heterostructure for field effect transistor application.

Nanotechnology·2024

Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Nanotechnology

Background:

  • Graphene quantum dots (GQDs) offer unique electronic properties.
  • Reduced graphene oxide (RGO) films provide a versatile substrate.
  • Developing highly sensitive temperature sensors is critical for advanced applications.

Purpose of the Study:

  • To create an ultra-sensitive temperature sensor using GQDs embedded in an RGO film.
  • To investigate the low-temperature transport mechanisms governing sensor performance.
  • To evaluate the sensor's sensitivity, response time, and stability.

Main Methods:

  • Synthesis of GQDs within an RGO film.
  • Characterization using transport measurements (temperature-dependent resistance, I-V curves).

More Related Videos

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

15.6K
Compact Quantum Dots for Single-molecule Imaging
17:14

Compact Quantum Dots for Single-molecule Imaging

Published on: October 9, 2012

18.2K

Related Experiment Videos

Last Updated: Aug 28, 2025

Fabrication and Testing of Photonic Thermometers
08:44

Fabrication and Testing of Photonic Thermometers

Published on: October 24, 2018

5.9K
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

15.6K
Compact Quantum Dots for Single-molecule Imaging
17:14

Compact Quantum Dots for Single-molecule Imaging

Published on: October 9, 2012

18.2K
  • Analysis of conduction mechanisms using variable range hopping (VRH) models.

    • Main Results:

    • The RGO film with embedded GQDs acts as an array of quantum dots separated by tunneling barriers.
    • Sensor resistance changes by six orders of magnitude between 300 K and 12 K.
    • Achieved a high temperature coefficient of resistance (TCR) of ~-1999% K⁻¹ (300-77 K) and ultra-high resolution (~μK).
    • Demonstrated fast response (~0.3 s) and recovery (~0.8 s) times with excellent repeatability.

    Conclusions:

    • The GQD-embedded RGO film functions as a highly sensitive temperature sensor.
    • The sensor's performance is governed by VRH conduction mechanisms.
    • The developed sensor is suitable for demanding thermal management and cryogenic applications.