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 Videos

Colloidal GaAs quantum wires: solution-liquid-solid synthesis and quantum-confinement studies.

Angang Dong1, Heng Yu, Fudong Wang

  • 1Department of Chemistry and Center for Materials Innovation, Washington University, St. Louis, Missouri 63130-4899, USA.

Journal of the American Chemical Society
|April 9, 2008
PubMed
Summary
This summary is machine-generated.

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

Reviewing the Computational Landscape of Drug Repurposing: Evolution from Structure-Based Methods to LLM-Based Methods.

Biomolecules·2026
Same author

Mechanisms and biomarkers of immune checkpoint inhibitor-associated myocarditis: from T cell imbalance to multicellular crosstalk.

Frontiers in immunology·2026
Same author

Integrated physiological responses of Macrobrachium rosenbergii to NaHCO₃ stress: growth inhibition, energy metabolism activation, oxidative injury, and autophagic response.

BMC genomics·2026
Same author

Pathway-engineered Co-assembly of nanorod-nanosphere binary superlattices.

Chemical communications (Cambridge, England)·2026
Same author

A novel endophytic Penicillium sp. JL76001 and its metabolite sclerotiorin: A multi-target and sustainable strategy for biocontrol of tomato Fusarium wilt.

Pesticide biochemistry and physiology·2026
Same author

SocialGen: Modeling Multi-Human Social Interaction with Language Models.

Proceedings. International Conference on 3D Vision·2026
Same journal

Linker Engineering toward NIR-II Metal-Organic Framework with Maximal Emission beyond 1000 nm for Inflammatory Bowel Disease Imaging.

Journal of the American Chemical Society·2026
Same journal

Observing Kinetic Selectivity in Anthracene Photodimerization through Selective Quenching by Excited States of Proximate Rare Earth Cations.

Journal of the American Chemical Society·2026
Same journal

Sequence-Dependent Folding of Recognition-Encoded Melamine Oligomers.

Journal of the American Chemical Society·2026
Same journal

Large Thermo- and Mechanosalient Actuation via Cooperative Twist Elasticity-Induced Packing Motif Conversion.

Journal of the American Chemical Society·2026
Same journal

Discovery and Biosynthesis of Lanthipeptides Featuring an Azepinoindole Scaffold by Radical <i>S</i>-Adenosylmethionine Enzyme-Catalyzed C-C Bond Formation.

Journal of the American Chemical Society·2026
Same journal

Enantiopurity-Controlled Magnetism in a Two-Dimensional Organic-Inorganic Material.

Journal of the American Chemical Society·2026
See all related articles

Gallium arsenide (GaAs) quantum wires were synthesized and characterized. Their band gaps were measured and found to agree with theoretical predictions for quantum confinement effects.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Solid-State Physics

Background:

  • Quantum confinement in nanomaterials alters electronic properties.
  • Gallium arsenide (GaAs) quantum structures are promising for electronic and optoelectronic applications.
  • Understanding size-dependent band gaps is crucial for designing nanodevices.

Purpose of the Study:

  • To synthesize colloidal gallium arsenide (GaAs) quantum wires with controlled dimensions.
  • To experimentally determine the size-dependent effective band gaps of these GaAs quantum wires.
  • To compare the observed size-dependent band gaps with theoretical models and with those of GaAs quantum wells.

Main Methods:

  • Growth of colloidal GaAs quantum wires (5-11 nm diameter) using two solution-liquid-solid (SLS) mechanisms.

Related Experiment Videos

  • Detection of excitonic absorption features to identify quantum wire properties.
  • Extraction of effective band gaps from absorption spectra.

    • Main Results:

    • Successfully synthesized GaAs quantum wires with narrow diameter distributions.
    • Observed distinct excitonic absorption features corresponding to the quantum wires.
    • Measured size-dependent effective band gaps for the GaAs quantum wires.
    • Demonstrated agreement between experimental band gaps and the effective-mass-approximation, particle-in-a-box (EMA-PIB) model predictions.

    Conclusions:

    • The effective-mass-approximation, particle-in-a-box (EMA-PIB) model accurately describes the size-dependent band gaps of GaAs quantum wires.
    • This study provides the first systematic comparison of size-dependent band gaps between semiconductor quantum wires and quantum wells.
    • The findings validate theoretical predictions for quantum confinement in different nanostructure dimensionalities.