Holographic sensor

A holographic sensor is a device which comprises a hologram embedded in a smart material that detects certain molecules or metabolites. This type of detection is usually a chemical interaction that is transduced as a change in properties of the holographic reflection, either refractive index or spacing between the holographic fringes. It is available with Average diameter 18nm.

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Detailed Description for Holographic sensor

These use light reflection to detect changes in a polymer film matrix containing a hologram. Since holograms reflect light at certain wavelengths, and change in their composition can generate a colorful reflection indicating the presence of a gas molecule. However, holographic sensors require illumination sources such as white light or lasers, and an observer or CCD detector.

A holographic sensor is a device that comprises a hologram embedded in a smart material which detects certain molecules or metabolites. This type of detection is usually a chemical interaction that is transduced as a change the properties of the holographic reflection, either refractive index or spacing between the holographic fringes. The specificity of the sensor is controlled by adding molecules in the polymer film that selectively interacts with the molecules of interest.

This sensor aims to integrate the sensor component, the transducer and the display for fast reading of molecular concentrations based on colorful reflections or wavelengths in one device.

Certain molecules that mimic binding sites or biomolecule active sites can be incorporated into the polymer that forms the holographic film in order to make the holographic sensors selective or sensitive to certain medical important molecules like glucose, etc.

The holographic sensors are read from a fair distance because the transducer element is the light that has been reflected and refracted by the holographic grating embedded in the sensor. Therefore they can be used in industrial applications where non-contact with the sensor is required. Other applications for holographic sensors are anti-counterfeiting 

 


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