title: A diaper-embedded disposable nitrite sensor with integrated on-board urine-activated battery for UTI screening.
abstract: This paper reports a low-cost solution to the early detection of urinary nitrite, a common surrogate for urinary tract infection (UTI). We present a facile method to fabricate a disposable and flexible colorimetric [1] nitrite sensor and its urine-activated power source [2] on a hydrophobic (wax) paper through laser-assisted patterning and lamination. Such device, integrated with interface circuitry and a Bluetooth low energy (BLE) module can be embedded onto a diaper, and transmit semi-quantitative UTI monitoring information in a point-of-care and autonomous fashion. The proposed nitrite sensing platform achieves a sensitivity of 1.35 ms/(mg/L) and a detection limit of 4 mg/L.
authors.forename: W
authors.initials: W
authors.lastname: Yu
authors.forename: W
authors.initials: W
authors.lastname: Seo
authors.forename: T
authors.initials: T
authors.lastname: Tan
authors.forename: B
authors.initials: B
authors.lastname: Jung
authors.forename: B
authors.initials: B
authors.lastname: Ziaie
mesh_terms: D041342:Absorbent Pads; D015374:Biosensing Techniques / Q000379:methods*; D002138:Calibration; D003124:Colorimetry; D011211:Electric Power Supplies; D004560:Electricity; D006801:Humans; D008403:Mass Screening; D009573:Nitrites / Q000032:analysis*; D019095:Point-of-Care Systems; D016482:Urinalysis / Q000379:methods*; D014552:Urinary Tract Infections / Q000175:diagnosis* / Q000652:urine*
chemical_list: D009573:Nitrites