Related Experiment Video
Updated: Feb 14, 2026
12:19
Identification of Metal Oxide Nanoparticles in Histological Samples by Enhanced Darkfield Microscopy and Hyperspectral Mapping
Published on: December 8, 2015
12.9K
Two-color dark-field (TCDF) microscopy for metal nanoparticle imaging inside cells
Valeria Rodríguez-Fajardo1, Vanesa Sanz, Ignacio de Miguel
1ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain. romain.quidant@icfo.eu.
Nanoscale
|February 13, 2018
Summary
A new two-color dark field microscopy technique enhances detection of noble metal nanoparticles (NPs) inside cells. This method overcomes background scattering, improving imaging for diagnostics and therapies.
Area of Science:
- Biotechnology
- Nanotechnology
- Optical Microscopy
Background:
- Noble metal nanoparticles (NPs) are valuable in biotechnology for diagnostics and therapies due to their optical properties.
- Monitoring internalized NPs in cells requires reliable microscopy techniques.
- Standard dark field (DF) microscopy is limited by cellular background scattering.
Purpose of the Study:
- To develop a novel two-color dark field microscopy technique for improved NP detection in cells.
- To overcome the limitations of standard DF microscopy in biological samples.
- To demonstrate the technique's utility in cellular imaging and tracking.
Main Methods:
- Development of a two-color dark field microscopy approach.
- Comparison of the novel technique with standard optical dark field microscopy.
- Application of the technique for cell screening and NP tracking.
Main Results:
- The two-color dark field microscopy significantly reduces cellular scattering background.
- Enhanced contrast, specificity, and reliability for NP detection were achieved.
- The technique showed suitability for wide-field screening and high-resolution tracking.
Conclusions:
- The novel two-color dark field microscopy offers superior performance for visualizing internalized NPs.
- This technique has potential applications in cell-based diagnostics, therapies, and imaging of other targets like bacteria and vesicles.
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