TY - GEN
T1 - A less-explored surface property
T2 - 42nd Society for Biomaterials Annual Meeting and Exposition 2019: The Pinnacle of Biomaterials Innovation and Excellence
AU - Zhao, Yu
AU - Bearden, Sam
AU - Zhang, Guigen
PY - 2019
Y1 - 2019
N2 - Introduction. Electrical double layer (EDL) forms spontaneously through thermodynamic interaction between electrons and ions at a solid-liquid interface (SLI). A close examination of the literature reveals that in the classical EDL theories[1] the ionic species were assumed to follow Boltzmann distributions with no electron transfer across the SLI. In our previous works[2-3], we reexamined the problem by considering the ionic and molecular interactions within the compact and diffuse layers along with an electrochemical process under the governing principles of the Poisson, Nernst-Plank and Butler-Volmer equations. We, on the one hand, confirmed that the ionic concentration did follow a Boltzmann distribution only when the net current across the SLI is zero, and on the other hand, expanded the dealing of ions and molecules inside the EDL without assuming zero electron transfer. One importance implication of this is that it allows us to use either a charging or Faraday current to perturb the thermodynamic equilibrium state of the EDL. In this study we push further to perturb the EDL for molecular interrogation at a surface inside a nanopore.
AB - Introduction. Electrical double layer (EDL) forms spontaneously through thermodynamic interaction between electrons and ions at a solid-liquid interface (SLI). A close examination of the literature reveals that in the classical EDL theories[1] the ionic species were assumed to follow Boltzmann distributions with no electron transfer across the SLI. In our previous works[2-3], we reexamined the problem by considering the ionic and molecular interactions within the compact and diffuse layers along with an electrochemical process under the governing principles of the Poisson, Nernst-Plank and Butler-Volmer equations. We, on the one hand, confirmed that the ionic concentration did follow a Boltzmann distribution only when the net current across the SLI is zero, and on the other hand, expanded the dealing of ions and molecules inside the EDL without assuming zero electron transfer. One importance implication of this is that it allows us to use either a charging or Faraday current to perturb the thermodynamic equilibrium state of the EDL. In this study we push further to perturb the EDL for molecular interrogation at a surface inside a nanopore.
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M3 - Conference contribution
AN - SCOPUS:85065397841
T3 - Transactions of the Annual Meeting of the Society for Biomaterials and the Annual International Biomaterials Symposium
SP - 351
BT - Society for Biomaterials Annual Meeting and Exposition 2019
Y2 - 3 April 2019 through 6 April 2019
ER -