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How can i use the phone as a spectrophotometer? 


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You can use your phone as a spectrophotometer by utilizing various methods described in the literature. One approach is to use a smartphone spectrometer that exploits diffraction grating holographic imaging to capture multiple diffraction orders simultaneously within the limited field-of-view of the smartphone's camera detector . Another method involves using a universal 3D-printed adapter containing a diffraction grating and a multimode optical fiber to project light from the smartphone's light source onto the grating and capture the diffraction pattern on the smartphone's camera . Additionally, a paper-based spectrophotometer can be constructed using inexpensive materials and a smartphone camera to capture and analyze spectral images . Furthermore, a smartphone can be used as a simple spectrophotometer in educational settings by utilizing applications that measure transmittance and absorbance of colored solutions . These methods provide accessible and cost-effective ways to use a phone as a spectrophotometer.

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The paper discusses using the ColorMeter application on smartphones as a simple spectrophotometer. The application uses RGB colors to read the transmittance of a colored solution and determine its absorbance and concentration.
The paper describes the fabrication of a smartphone-based spectrophotometer using a paper-based design. The smartphone is used to capture images of the samples, and free downloadable software is used for spectral analysis.
The paper describes a smartphone spectrometer that utilizes a customized diffraction grating to capture multiple diffraction orders simultaneously. This allows the smartphone to function as a multichannel spectrometer for spectroscopic analysis.
The provided paper demonstrates a smartphone-based spectrometer that uses the phone's camera to image the speckle pattern produced by an optical fiber, and a smartphone-based algorithm to determine the input spectrum.
The paper discusses using smartphones as low-cost spectrometers by supplementing them with a 3D-printed adapter containing a diffraction grating and an optical fiber. The diffraction pattern is captured by the smartphone's camera and converted to spectral patterns.

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