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Next-generation Sequencing03:00

Next-generation Sequencing

The first human genome sequencing project cost $2.7 billion and was declared complete in 2003, after 15 years of international cooperation and collaboration between several research teams and funding agencies. Today, with the advent of next-generation sequencing technologies, the cost and time of sequencing a human genome have dropped over 100 fold.
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features.

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Gold Nanostar Synthesis with a Silver Seed Mediated Growth Method
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Gold Nanostar Synthesis with a Silver Seed Mediated Growth Method

Published on: January 15, 2012

Gold nanoparticles: past, present, and future.

Rajesh Sardar1, Alison M Funston, Paul Mulvaney

  • 1Kenan Laboratories of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599, USA.

Langmuir : the ACS Journal of Surfaces and Colloids
|July 4, 2009
PubMed
Summary
This summary is machine-generated.

Recent advances in gold nanoparticle (Au NP) synthesis, electrochemistry, and optical properties are reviewed. New methods enable controlled synthesis and reveal unique catalytic and electrochemical behaviors, impacting nanotechnology.

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Gold Nanostar Synthesis with a Silver Seed Mediated Growth Method
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Area of Science:

  • Nanotechnology
  • Materials Science
  • Physical Chemistry

Background:

  • Gold nanoparticles (Au NPs) exhibit unique size- and shape-dependent properties.
  • Synthesis methods have evolved for precise control over Au NP characteristics.
  • Understanding Au NP behavior is crucial for advanced applications.

Purpose of the Study:

  • To review recent developments in Au NP synthesis, electrochemistry, and optical properties.
  • To highlight key papers and their impact on the field.
  • To explore the consequences of these advancements.

Main Methods:

  • Review of literature focusing on synthesis, electrochemistry, and optical spectroscopy.
  • Analysis of methods including two-phase synthesis, dendrimer sequestration, seeded growth, and nanoparticle assembly.
  • Examination of electrochemical techniques and surface plasmon spectroscopy.

Main Results:

  • Advancements in Au NP synthesis enabling controlled shapes and assembly.
  • Systematization of Au NP electrochemistry based on core properties and ligand functionalization.
  • Discovery of Au NPs as effective heterogeneous catalysts, e.g., for CO oxidation.
  • Progress in understanding surface plasmon spectroscopy and single-nanoparticle properties.

Conclusions:

  • Gold nanoparticles possess diverse and tunable properties.
  • Continued research in synthesis and characterization drives new applications.
  • Au NPs show significant potential in catalysis, electrochemistry, and optics.