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Related Concept Videos

Carrier Transport01:21

Carrier Transport

693
The generation of electrical current in semiconductors is fundamentally driven by two mechanisms: drift and diffusion. These processes are essential for the functionality and performance of semiconductor-based devices.
Drift Current:
The drift of charge carriers is started by an external electric field (E). Charged particles, such as electrons and holes, experience an acceleration between collisions with lattice atoms. For electrons, this results in a drift velocity (vd) given by:
693
Carrier Generation and Recombination01:22

Carrier Generation and Recombination

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Carrier generation is the process by which electron-hole pairs (EHPs) are created within the semiconductor. In direct-bandgap semiconductors, such as gallium arsenide (GaAs), this occurs efficiently when energy absorption prompts valence electrons to leap into the conduction band, leaving behind holes.
This process is given by the generation rate G and is efficient due to the conservation of momentum between the valence band maximum and conduction band minimum.
Indirect generation involves an...
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Energy Carried By Electromagnetic Waves01:22

Energy Carried By Electromagnetic Waves

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Anyone who has used a microwave oven knows there is energy in electromagnetic waves. Sometimes, this energy is obvious, such as in the summer sun's warmth. At other times, it is subtle, such as the unfelt energy of gamma rays, which can destroy living cells. Electromagnetic waves bring energy into a system through their electric and magnetic fields. These fields can exert forces and move charges in the system and, thus, do work on them. However, there is energy in an electromagnetic wave,...
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Evaluating Plasmonic Transport in Current-carrying Silver Nanowires
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Quantum Plasmonics: Energy Transport Through Plasmonic Gap.

Jihye Lee1,2, Deok-Jin Jeon1,2, Jong-Souk Yeo1,2

  • 1School of Integrated Technology, Yonsei University, Incheon, 21983, Republic of Korea.

Advanced Materials (Deerfield Beach, Fla.)
|April 23, 2021
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Summary

Quantum plasmonics leverages surface plasmons for nanoscale light manipulation, enabling ultrasensitive detection and low-power devices. This review explores novel materials and quantum effects for advanced photonic components and quantum technologies.

Keywords:
plasmonic gapquantum energy transportquantum nanophotonicsquantum plasmonic applicationssub-nanometer gap fabrication

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Area of Science:

  • Nanophotonics and Quantum Optics
  • Materials Science

Background:

  • Surface plasmons at metal-dielectric interfaces enable sub-wavelength electromagnetic field confinement and enhancement.
  • Plasmonics offers applications in sensing, information processing, and nonlinear spectroscopies, meeting demands for nanoscale devices.

Purpose of the Study:

  • To provide a comprehensive overview of recent developments in quantum plasmonic resonators, focusing on novel materials.
  • To explore quantum effects, including nonlocality and electron tunneling, in nanoscale plasmonic systems.
  • To identify potential quantum technology applications arising from novel gap materials in the quantum regime.

Main Methods:

  • Investigation of quantum behavior of localized surface plasmons and matter at nanometer to sub-nanometer scales.
  • Utilizing innovative nanofabrication and chemical functionalization techniques.
  • Exploring novel gap materials within the quantum regime of plasmonic resonators.

Main Results:

  • Demonstration of quantum effects like nonlocality and electron tunneling in nanoscale plasmonic systems.
  • Advancement in understanding light-matter interactions at extreme limits.
  • Identification of new materials for quantum plasmonic resonators.

Conclusions:

  • Quantum plasmonics opens a new era for ultimate miniaturization of photonic components and extreme light-matter interactions.
  • Novel materials and quantum phenomena in plasmonic gaps enable energy transport across extremely small distances.
  • Exploration of quantum plasmonics with novel materials paves the way for future quantum technologies.