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작성일 : 16-08-11 14:37
Self powered pH sensor using piezoelectric composite_Sensor&ActuatorB:Chemical(IF:4.8)
 글쓴이 : supervisor
조회 : 1,771  
   2016_Alluri_Sensor_and_actuators_B.pdf (4.5M) [4] DATE : 2016-08-11 14:37:18
Self powered pH sensor using piezoelectric composite wormstructures derived by ionotropic gelation approachNagamalleswara Rao Alluria,1, Sophia Selvarajanb,1, Arunkumar Chandrasekharc,Saravanakumar Balasubramaniamc, Ji Hyun Jeonga, Sang-Jae Kimb,c,∗

 Multifunctional biopolymer-piezoelectric composite worm structures (wavy and linear) derived byionotropic gelation technique is fundamentally reported. Mass production of composite wavy patternworms (CWPWs) enable high energy conversion from low frequency mechanical energy to electricalenergy, tunable piezoelectricity by tailored length dependent CWPWs, weight ratio of piezoelectricnanoparticles. Interestingly we found that, the peak–peak voltage and current decreases around 87% and71% for CWPW devices when the CWPWs length decreased to 56.4% (L = 1.95 to 0.85 cm) respectively.We also tested, the pH dependent conductivity of composite linear worm (CLW) for clinical, food mon-itoring applications. Next, we demonstrate the generated piezoelectric potential of CWPW device holdsas a promising independent power source unit to drive the CLW sensor under different pH solutions. Theproposed work is non-invasive, flexible with robustness in long-term effective usage, biocompatibility,and battery-less operation for self powered biosensor in theranostics, blood pH measurement.© 2016 Elsevier B.V. All rights reserved