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Related Concept Videos

Pulmonary Tuberculosis I01:29

Pulmonary Tuberculosis I

Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Pulmonary Tuberculosis II01:28

Pulmonary Tuberculosis II

Tuberculosis, or TB, is a bacterial infectious disease caused by Mycobacterium tuberculosis. While its primary impact is on the lungs, leading to pulmonary tuberculosis, it can also affect various other organs, a condition referred to as extrapulmonary tuberculosis.
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
Pulmonary Tuberculosis III01:31

Pulmonary Tuberculosis III

Tuberculosis (TB) is a contagious infection primarily affecting the lung parenchyma but which can also affect other body parts. TB can be classified based on disease development, presentation, and the affected anatomical site.
The first classification is based on the development of the disease, and it includes the following categories:
Pulmonary Tuberculosis IV01:26

Pulmonary Tuberculosis IV

Tuberculosis, more commonly referred to as TB, is an infectious disease stemming from Mycobacterium tuberculosis. While it primarily impacts the lungs, TB can also affect other body areas. Given its severity and global impact, timely and accurate diagnosis is crucial for controlling its spread and improving patient outcomes.
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
Pulmonary Tuberculosis V01:28

Pulmonary Tuberculosis V

Medical management of tuberculosis (TB) patients involves a comprehensive approach that includes diagnosis, treatment, and monitoring. The specific strategies can vary depending on the type of tuberculosis (latent or active), the patient's overall health status, and other considerations.
Latent tuberculosis infection occurs when TB bacteria are present in a person's body, but are not causing illness or symptoms. It is not contagious, and preventive treatment is crucial to avoid the progression...

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Related Experiment Video

Updated: May 23, 2026

Colloidal Synthesis of Nanopatch Antennas for Applications in Plasmonics and Nanophotonics
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Disordered plasmonic system with dense copper nano-island morphology.

Tlek Tapani1, Vincenzo Caligiuri2,3, Yanqiu Zou4

  • 1Department of Physics, Umeå University, Linnaeus väg 24, 901 87 Umeå, Sweden.

Nanophotonics (Berlin, Germany)
|June 11, 2025
PubMed
Summary
This summary is machine-generated.

Researchers developed a simple, lithography-free method to create disordered copper nano-islands for plasmonic applications. These affordable substrates show enhanced light-matter interactions for sensing and catalysis.

Keywords:
EELSSHGcathodoluminescencenano islandsnanoporouspump-probe

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Plasmonics

Background:

  • Dry synthesis is a versatile method for fabricating nanoporous metal films.
  • Nanostructured materials have applications in plasmonics, photochemistry, and photocatalysis.
  • Disordered plasmonic substrates offer unique properties for various applications.

Purpose of the Study:

  • To develop a lithography-free method for creating copper nano-islands.
  • To investigate the plasmonic properties of these copper nano-islands.
  • To assess their potential for applications in sensing and catalysis.

Main Methods:

  • Dry synthesis for copper nano-island fabrication.
  • Cathodoluminescence spectroscopy.
  • Electron-energy-loss spectroscopy.

Main Results:

  • Successfully fabricated disordered copper nano-islands with high density and large surface area.
  • Confirmed nano-islands as sources of local field enhancement.
  • Identified plasmonic resonance bands in the visible and near-infrared spectral range.
  • Observed slower plasmonic signal decay compared to bulk copper films due to reduced energy dissipation.

Conclusions:

  • Demonstrated a robust, lithography-free fabrication pathway for nanostructured plasmonic copper substrates.
  • Copper nano-islands offer a low-cost, versatile alternative for plasmonic applications.
  • Potential applications include bio-sensing, photochemistry, and photocatalysis.