Development and Implementation of a Novel Fluorescence Position-Sensitive Detector (fpsd) Utilizing Color Rendering Mechanism

A fluorescence color encoding mechanism is proposed herein for a novel position-sensitive detector (PSD). The mechanism entails the manipulation of composite proportions of two fluorescent materials distributed linearly along a composite bar. This manipulation results in distinct emission spectra at various positions along the bar, thereby establishing a unique correspondence between each point on the bar and its characteristic fluorescence spectrum. The positional information can be decoded from parameters such as color coordinates, emission band location, or fluorescence intensity ratio. The fabrication procedure for the position sensing device, termed the "ramien process", has been devised, drawing inspiration from the process of stretching noodles- Chinese ramien or Japanese ramen. A prototype fluorescence PSD (fPSD) has been calibrated using a displacement platform, exhibiting a resolution at the micron level across a measuring range spanning approximately one decimeter. Notably, the determined precision of the fPSD for displacement sensing is 0.0022 %, surpassing comparable methods in precision. Furthermore, a wireless implementation of the fPSD has been validated through real-time monitoring of the vibration of a spring oscillator, illustrating the potential utility of this technology in applications requiring remote position determination and ultrafine control of movement.