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We demonstrated a novel fabrication technique of 3-D biobattery packs by folding or stacking 2-D paper-based biobatteries for their series and/or parallel connections. A stackable, high-performance bacteria-powered battery was developed by folding two functional components (i.e. a conductive hydrophilic reservoir as an anode and a solid electron acceptor as a cathode) integrated into a single sheet...
We developed a paper-based self-powered sensor patch for detecting glucose levels in sweat. This wearable, non-invasive biosensor made use of the integration of a vertically stacked paper-based glucose/oxygen enzymatic fuel cell into a standard Band-Aid patch. The paper-based device, attached directly to human skin, wicked sweat from human skin and monitored an electrochemical energy conversion as...
We created a paper-based microbial fuel cell (MFC) which generated power from human saliva. Upon adding one drop of saliva, the dried exoelectrogens, pre-inoculated in a conductive paper reservoir of the MFC, activated their respiration by oxidizing organic substrates (e.g. glucose) in the saliva and transferring electrons to the anode. The device generated the maximum current density of 10.5μΑ/cm...
We created a 9-cell biobattery stack on paper, which was capable of generating bio-power from microbial metabolism, delivering on-board energy to the next generation of paper-based systems. The developed biobattery stack has competitive advantages over other paper-based batteries in resource-limited and remote regions because water in every environment generally hosts various microorganisms that can...
We demonstrate an electrically conductive paper-based screening platform for the high-throughput and rapid characterization of the electricity-producing capability of microorganisms. This novel screening sensor substantially improved the device fabrication, sensitivity, reliability, and scalability by simply patterning hydrophilic reservoirs in paper with hydrophobic wax boundaries and adding water-dispersed...
We report flow rate-enhanced new paper-based microfluidic (μPAD) platform via a modified hollow channel. The hollow channel was made by a hand-coating film instead of a paper. In two character-shaped microfluidic channels including T and Y, the hollow platform showed roughly maximum 300-fold fast flow rates and times compared to the hydrophilic platform.
We demonstrate the use of a paper-based sensing platform for rapid and high-throughput characterization of microbial electricity-generating capabilities. For the first time, a 48-well microbial fuel cell (MFC) array was fabricated on paper substrates, providing 48 high-throughput measurements and highly comparable performance characteristics in a reliable manner. Spatially distinct 48 wells of the...
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