Journal
NANO LETTERS
Volume 13, Issue 8, Pages 3903-3908Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl4019879
Keywords
OD Transistor; bubble detection; ISFET; energy harvesting; Si nanowire; water electrolysis; hydrogen production
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Funding
- Nord Pas de Calais district
- Universite Lille 1
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The relationship of the gas bubble size to the size distribution critically influences the effectiveness of electrochemical processes. Several optical and acoustical techniques have been used to characterize the size and emission frequency of bubbles. Here, we used zero-dimensional (0D) ion-sensitive field-effect transistors (ISFETs) buried under a microbath to detect the emission of individual bubbles electrically and to generate statistics on the bubble emission time. The bubble size was evaluated via a simple model of the electrolytic current. We suggest that energy lost during water electrolysis could be used to generate electric pulses at an optimal efficiency with an array of 0D ISFETs.
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