light energy

What are the Applications of Light Energy in Nanotechnology?

Light energy is harnessed in various applications within nanotechnology:
Solar Cells
Nanotechnology has significantly improved the efficiency of solar cells. Nanostructured materials, such as perovskite nanoparticles and nanowires, enhance light absorption and charge separation, leading to higher energy conversion rates.
Biomedical Imaging
In biomedical imaging, nanotechnology enables the development of highly sensitive imaging techniques. Gold nanoparticles, for example, are used in optical coherence tomography to provide high-resolution images of biological tissues.
Phototherapy
Light-based therapies, such as photodynamic therapy (PDT), utilize light-activated nanoparticles to target and destroy cancer cells. These nanoparticles can be designed to absorb specific wavelengths of light, making the treatment highly effective and localized.
Sensors
Nanotechnology has led to the development of highly sensitive sensors that can detect minute changes in light properties. For example, surface plasmon resonance (SPR) sensors use metallic nanoparticles to detect biomolecular interactions with high sensitivity.

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