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

You might also read

Related Articles

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

Sort by
Same author

PROMETHEUS clinical trial protocol: tailoring healthy ageing with lifestyle and nutraceuticals.

GeroScience·2026
Same author

Epidemiology of musculoskeletal injuries in Chinese collegiate dragon boat athletes: a cross-sectional survey.

Frontiers in public health·2026
Same author

Targeting TLR4/non-canonical NF-κB pathway by Bushen Bitong recipe enhances BMSCs-based cartilage repair in osteoarthritis.

Biochemistry and biophysics reports·2026
Same author

Shift work and risk of sleep disturbances in occupational populations: a systematic review and meta-analysis.

BMC public health·2026
Same author

Efficacy of multiple acupoint stimulation therapies for primary insomnia patients: a systematic review and network meta-analysis.

Frontiers in psychiatry·2026
Same author

Mechanistic role of gut microbiota metabolites in hypertension-insomnia comorbidity via integrated network pharmacology and molecular dynamics.

Scientific reports·2026

Related Experiment Video

Updated: May 22, 2025

Fabrication of Zero Mode Waveguides for High Concentration Single Molecule Microscopy
08:01

Fabrication of Zero Mode Waveguides for High Concentration Single Molecule Microscopy

Published on: May 12, 2020

7.9K

Graphene quantum dot-coated polystyrene microsphere multilayer colloidal crystals with distributed Bragg reflector

Binglang Chang1, Lin Yi2

  • 1School of Physics, Huazhong University of Science and Technology, Wuhan, 430074, China.

Scientific Reports
|March 14, 2025
PubMed
Summary

Researchers developed novel graphene quantum dot (GQD) coated polystyrene (PS) microsphere colloidal crystals. These materials exhibit tunable, broad-spectrum distributed Bragg reflector (DBR) absorption from UV to near-infrared.

More Related Videos

Fabrication of Polymer Microspheres for Optical Resonator and Laser Applications
08:06

Fabrication of Polymer Microspheres for Optical Resonator and Laser Applications

Published on: June 2, 2017

14.0K
TiO2-coated Hollow Glass Microspheres with Superhydrophobic and High IR-reflective Properties Synthesized by a Soft-chemistry Method
07:37

TiO2-coated Hollow Glass Microspheres with Superhydrophobic and High IR-reflective Properties Synthesized by a Soft-chemistry Method

Published on: April 26, 2017

10.0K

Related Experiment Videos

Last Updated: May 22, 2025

Fabrication of Zero Mode Waveguides for High Concentration Single Molecule Microscopy
08:01

Fabrication of Zero Mode Waveguides for High Concentration Single Molecule Microscopy

Published on: May 12, 2020

7.9K
Fabrication of Polymer Microspheres for Optical Resonator and Laser Applications
08:06

Fabrication of Polymer Microspheres for Optical Resonator and Laser Applications

Published on: June 2, 2017

14.0K
TiO2-coated Hollow Glass Microspheres with Superhydrophobic and High IR-reflective Properties Synthesized by a Soft-chemistry Method
07:37

TiO2-coated Hollow Glass Microspheres with Superhydrophobic and High IR-reflective Properties Synthesized by a Soft-chemistry Method

Published on: April 26, 2017

10.0K

Area of Science:

  • Materials Science
  • Nanotechnology
  • Optoelectronics

Background:

  • Distributed Bragg reflector (DBR) materials are crucial for optical fiber communications and solar cells.
  • Conventional DBRs have limitations in tunable absorption ranges.
  • Developing novel DBR materials with enhanced optical properties is essential.

Purpose of the Study:

  • To fabricate and characterize unconventional colloidal crystals using polystyrene (PS) microspheres coated with graphene quantum dots (GQDs).
  • To investigate the tunable distributed Bragg reflector (DBR) scattering absorption properties of these novel PS@GQD structures.
  • To explore the potential applications of these materials in optical devices.

Main Methods:

  • Dispersion polymerization was used to synthesize monodisperse polystyrene (PS) microspheres.
  • Graphene quantum dots (GQDs) were prepared via ultrasonic dispersion.
  • PS@GQD core-shell structures were self-assembled, followed by fabrication of colloidal crystals using improved gravity sedimentation.
  • Optical properties were characterized using UV-Vis spectroscopy and Raman spectroscopy, complemented by numerical simulations.

Main Results:

  • Successfully fabricated monodisperse PS microspheres and GQDs, leading to self-assembled PS@GQD core-shell structures.
  • Fabricated unconventional colloidal crystals of PS@GQD structures for the first time.
  • Demonstrated tunable DBR scattering absorption from near-ultraviolet to near-infrared (300-1200 nm), a significant red-shift compared to conventional DBRs.
  • Raman spectra confirmed polystyrene peaks with a red-shift, and numerical simulations explained DBR phenomena via topological excitations.

Conclusions:

  • The fabricated PS@GQD colloidal crystals represent a novel class of unconventional DBR materials.
  • These materials offer tunable absorption across a broad spectrum, outperforming conventional DBRs.
  • The findings open new avenues for advanced optical devices and photonic applications.