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  • Title: Fabricating optical fiber imaging sensors using ink jet printing technology: a pH sensor proof-of-concept.
    Author: Carter JC, Alvis RM, Brown SB, Langry KC, Wilson TS, McBride MT, Myrick ML, Cox WR, Grove ME, Colston BW.
    Journal: Biosens Bioelectron; 2006 Jan 15; 21(7):1359-64. PubMed ID: 16230001.
    Abstract:
    We demonstrate the feasibility of using Drop-on-Demand microjet printing technology for fabricating imaging sensors by reproducibly printing an array of photo-polymerizable sensing elements, containing a pH sensitive indicator, on the surface of an optical fiber image guide. The reproducibility of the microjet printing process is excellent for microdot (i.e. micrometer-sized polymer) sensor diameter (92.2+/-2.2 microm), height (35.0+/-1.0 microm), and roundness (0.00072+/-0.00023). pH sensors were evaluated in terms of pH sensing ability (< or =2% sensor variation), response time, and hysteresis using a custom fluorescence imaging system. In addition, the microjet technique has distinct advantages over other fabrication methods, which are discussed in detail.
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