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Related Concept Videos

Electron Carriers01:24

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Electron carriers can be thought of as electron shuttles. These compounds can easily accept electrons (i.e., be reduced) or lose them (i.e., be oxidized). They play an essential role in energy production because cellular respiration is contingent on the flow of electrons.
Over the many stages of cellular respiration, glucose breaks down into carbon dioxide and water. Electron carriers pick up electrons lost by glucose in these reactions, temporarily storing and releasing them into the electron...
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Overview
Electrons are negatively charged subatomic particles that are attracted to an orbit around the positively-charged nucleus of an atom. They reside in locations that are associated with energy levels called shells and are further organized into sub-shells and orbitals within each shell.
Electrons Orbit the Nucleus
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Clathrin-coated vesicles use endocytosis to transport receptors and lysosomal hydrolases from the Golgi to the lysosome in the late secretory pathway. Clathrin-mediated endocytosis was the first described endocytic process, and Clathrin-coated vesicles remain one of the most well-studied transport vesicles. The molecular machinery that generates clathrin-coated vesicles comprises over 50 proteins that precisely coordinate vesicle formation. Cell surface receptors concentrated in indented sites...
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Membrane-enclosed structures called vesicles transport proteins and lipids across the cell. The vesicles derive their cargo from the plasma membrane, Golgi, ER, or endosome. Coated vesicles are spherical, protein-coated carriers with a 50–100 nm diameter that mediate bidirectional transport between the ER and the Golgi. The distribution of proteins between the ER and Golgi complex is dynamic and is maintained by different coated vesicles. Their formation is driven by the assembly of...
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Graphene Coatings for Biomedical Implants
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A Graphene-Coated Mo Tip Array for Highly-Efficient Nanostructured Electron Field Emitters.

Ningli Zhu1,2,3, Jing Chen4, Hai Deng5,6,7

  • 1Aisino Corporation Inc., Beijing 100195, China. zhuningli@aisino.com.

Micromachines
|November 6, 2018
PubMed
Summary
This summary is machine-generated.

A novel graphene-coated molybdenum (Mo) tip array electron field emitter was developed. This hybrid nanostructure demonstrates highly efficient and stable electron emission with low turn-on fields, improving nanoscale heterostructure emitter performance.

Keywords:
field emissiongraphenemolybdenumtip array

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Physics

Background:

  • Electron field emission is crucial for various electronic devices.
  • Existing field emitters face challenges with efficiency and stability.
  • Nanostructured materials offer potential for enhanced emission properties.

Purpose of the Study:

  • To design and fabricate a novel electron field emitter using a hybrid nanostructure.
  • To evaluate the performance of a monolayer graphene coated well-aligned Mo tip array.
  • To explore the advantages of this specific hybrid nanostructure morphology for field emission.

Main Methods:

  • Design and fabrication of a monolayer graphene coated well-aligned Mo tip array.
  • Characterization of the hybrid nanostructure's morphology and properties.
  • Evaluation of field emission characteristics, including turn-on fields and stability.

Main Results:

  • The hybrid nanostructure exhibited efficient and stable field emissions.
  • Low turn-on fields were achieved with the developed devices.
  • Significant improvements in emission efficiency were observed compared to conventional emitters.

Conclusions:

  • The monolayer graphene coated Mo tip array is an effective electron field emitter.
  • The hybrid nanostructure design offers superior performance for nanoscale heterostructure emitters.
  • This technology holds promise for advanced electronic applications requiring efficient electron emission.