Paper-based diagnostic devices

Schultz, Spencer A.; Noxon, Isabelle C.; Sisley, Tyler A.; Martinez, Andres W.

doi:10.1049/pbhe003e_ch2

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Charge Transfer Mechanism1

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2022

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“…This ionic charge carrying mechanism could be promising in sensing applications, particularly clinical diagnostic devices. For example, paper colorimetric dipstick test devices [18], paper lateral flow devices for analytes detection [19], and paper-based microfluidic devices [20]. Ionic salt droplets cannot significantly respond beyond a specific amount as I sc and V oc get saturated.…”

Section: Charge Transfer Mechanismmentioning

confidence: 99%

Paper-based triboelectric nanogenerator and activities of salt ions

2022

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This work presents a triboelectric nanogenerator (TENG) fabrication using polytetrafluoroethylene, aluminum foil, and cellulose paper. Mechanical interactions lead to atomic defects that stimuli the delocalized electrostatic charge carriers and kinetic energy. The addition of ionic salt’s microdroplets improved the TENG’s performance. Eventually, surface charge activities have escalated the electrical signals. Further, studied spontaneously increased charge transport performance at the steady-state condition in the presence of NaCl ionic droplets. We considered that these ionic activities actively participated in detecting salt ions.

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Section: Charge Transfer Mechanismmentioning

confidence: 99%